Just a thought (not sure if it's explicitly specified in 4.5 spec or not): Do we really need to perform bus test in HS200 mode? because in HS200, we are anyways going to perform the tuning sequence (which achieves what bus test command does). Regards, Subhash > -----Original Message----- > From: Saugata Das [mailto:saugata.das@xxxxxxxxxx] > Sent: Tuesday, December 13, 2011 11:03 AM > To: Girish K S > Cc: Subhash Jadavani; linux-mmc@xxxxxxxxxxxxxxx; patches@xxxxxxxxxx; > linux-samsung-soc@xxxxxxxxxxxxxxx; Chris Ball > Subject: Re: [PATCH V5] mmc: core: HS200 mode support for eMMC 4.5 > > On 13 December 2011 10:13, Girish K S <girish.shivananjappa@xxxxxxxxxx> > wrote: > > On 12 December 2011 12:20, Girish K S > <girish.shivananjappa@xxxxxxxxxx> wrote: > >> On 5 December 2011 20:29, Saugata Das <saugata.das@xxxxxxxxxx> > wrote: > >>> Hi Girish > >>> > >>> Please refer to Figure 71 (HS200 device output timing) of the MMC- > 4.5 > >>> spec. It shows that both CMD and DATA[7-0] will have some latency > till > >>> valid window. This implies that even the CMD line will need tuning > for > >>> reading the response. The specification talks about identifying > >>> sampling point for data lines by reading tuning blocks. Based on > host > >>> controller capability, even the CMD line will get the good sample > >>> point during the same tuning sequence. > >>> > >>> We need to have the tuning done (execute_tuning) soon after > switching > >>> to HS200 mode and 200MHz clock. > >>> > >> If i make a change as per subhash suggestion"set bus width before > >> setting the HS200 mode." then it will affect the entire frame work > of > >> mmc which is developed as per Annexure A6.1 A.6.2 A.6.3 (mentions > the > >> steps for bus initialization). can any of you suggest a way to do > >> this. > > Note that, we need to make this modification only for HS200 mode. For > DDR mode, it is required that we keep the current way (i.e. setting > BUS_WIDTH after HS_TIMING). > > > > > Any inputs on this > > > >>> > >>> Regards > >>> Saugata > >>> > >>> > >>> On 5 December 2011 16:59, Subhash Jadavani > <subhashj@xxxxxxxxxxxxxx> wrote: > >>>> > >>>> > >>>>> -----Original Message----- > >>>>> From: Girish K S [mailto:girish.shivananjappa@xxxxxxxxxx] > >>>>> Sent: Monday, December 05, 2011 12:20 PM > >>>>> To: Subhash Jadavani > >>>>> Cc: linux-mmc@xxxxxxxxxxxxxxx; patches@xxxxxxxxxx; linux-samsung- > >>>>> soc@xxxxxxxxxxxxxxx; Chris Ball > >>>>> Subject: Re: [PATCH V5] mmc: core: HS200 mode support for eMMC > 4.5 > >>>>> > >>>>> On 5 December 2011 11:46, Subhash Jadavani > <subhashj@xxxxxxxxxxxxxx> > >>>>> wrote: > >>>>> > > >>>>> > > >>>>> >> -----Original Message----- > >>>>> >> From: Girish K S [mailto:girish.shivananjappa@xxxxxxxxxx] > >>>>> >> Sent: Friday, December 02, 2011 5:08 PM > >>>>> >> To: Subhash Jadavani > >>>>> >> Cc: linux-mmc@xxxxxxxxxxxxxxx; patches@xxxxxxxxxx; linux- > samsung- > >>>>> >> soc@xxxxxxxxxxxxxxx; Chris Ball > >>>>> >> Subject: Re: [PATCH V5] mmc: core: HS200 mode support for eMMC > 4.5 > >>>>> >> > >>>>> >> On 2 December 2011 00:02, Subhash Jadavani > <subhashj@xxxxxxxxxxxxxx> > >>>>> >> wrote: > >>>>> >> > > >>>>> >> > > >>>>> >> >> -----Original Message----- > >>>>> >> >> From: linux-mmc-owner@xxxxxxxxxxxxxxx [mailto:linux-mmc- > >>>>> >> >> owner@xxxxxxxxxxxxxxx] On Behalf Of Girish K S > >>>>> >> >> Sent: Thursday, December 01, 2011 7:48 PM > >>>>> >> >> To: Subhash Jadavani > >>>>> >> >> Cc: linux-mmc@xxxxxxxxxxxxxxx; patches@xxxxxxxxxx; linux- > samsung- > >>>>> >> >> soc@xxxxxxxxxxxxxxx; Chris Ball > >>>>> >> >> Subject: Re: [PATCH V5] mmc: core: HS200 mode support for > eMMC > >>>>> 4.5 > >>>>> >> >> > >>>>> >> >> On 1 December 2011 16:27, Subhash Jadavani > >>>>> <subhashj@xxxxxxxxxxxxxx> > >>>>> >> >> wrote: > >>>>> >> >> > > >>>>> >> >> > > >>>>> >> >> >> -----Original Message----- > >>>>> >> >> >> From: linux-mmc-owner@xxxxxxxxxxxxxxx [mailto:linux-mmc- > >>>>> >> >> >> owner@xxxxxxxxxxxxxxx] On Behalf Of Girish K S > >>>>> >> >> >> Sent: Thursday, December 01, 2011 3:58 PM > >>>>> >> >> >> To: Subhash Jadavani > >>>>> >> >> >> Cc: linux-mmc@xxxxxxxxxxxxxxx; patches@xxxxxxxxxx; > linux- > >>>>> samsung- > >>>>> >> >> >> soc@xxxxxxxxxxxxxxx; Chris Ball > >>>>> >> >> >> Subject: Re: [PATCH V5] mmc: core: HS200 mode support > for eMMC > >>>>> >> 4.5 > >>>>> >> >> >> > >>>>> >> >> >> On 1 December 2011 15:33, Subhash Jadavani > >>>>> >> <subhashj@xxxxxxxxxxxxxx> > >>>>> >> >> >> wrote: > >>>>> >> >> >> > Hi Girish, > >>>>> >> >> >> > > >>>>> >> >> >> >> -----Original Message----- > >>>>> >> >> >> >> From: linux-mmc-owner@xxxxxxxxxxxxxxx [mailto:linux- > mmc- > >>>>> >> >> >> >> owner@xxxxxxxxxxxxxxx] On Behalf Of Girish K S > >>>>> >> >> >> >> Sent: Wednesday, November 30, 2011 2:24 PM > >>>>> >> >> >> >> To: linux-mmc@xxxxxxxxxxxxxxx > >>>>> >> >> >> >> Cc: patches@xxxxxxxxxx; linux-samsung- > soc@xxxxxxxxxxxxxxx; > >>>>> >> >> >> >> subhashj@xxxxxxxxxxxxxx; Girish K S; Chris Ball > >>>>> >> >> >> >> Subject: [PATCH V5] mmc: core: HS200 mode support for > eMMC > >>>>> 4.5 > >>>>> >> >> >> >> > >>>>> >> >> >> >> This patch adds the support of the HS200 bus speed > for eMMC > >>>>> >> 4.5 > >>>>> >> >> >> >> devices. > >>>>> >> >> >> >> The eMMC 4.5 devices have support for 200MHz bus > speed.The > >>>>> mmc > >>>>> >> >> core > >>>>> >> >> >> and > >>>>> >> >> >> >> host modules have been touched to add support for > this > >>>>> module. > >>>>> >> >> >> >> > >>>>> >> >> >> >> It is necessary to know the card type in the sdhci.c > file > >>>>> to > >>>>> >> add > >>>>> >> >> >> >> support > >>>>> >> >> >> >> for eMMC tuning function. So card.h file is included > to > >>>>> import > >>>>> >> >> the > >>>>> >> >> >> card > >>>>> >> >> >> >> data structure. > >>>>> >> >> >> >> > >>>>> >> >> >> >> cc: Chris Ball <cjb@xxxxxxxxxx> > >>>>> >> >> >> >> Signed-off-by: Girish K S > <girish.shivananjappa@xxxxxxxxxx> > >>>>> >> >> >> >> --- > >>>>> >> >> >> >> Changes in v5: > >>>>> >> >> >> >> Reduced the case statements for better code > >>>>> readability. > >>>>> >> >> >> Removed > >>>>> >> >> >> >> unused macro definitions. Modified the tuning > >>>>> function > >>>>> >> >> >> prototype > >>>>> >> >> >> >> and definition to support tuning for both SD > and eMMC > >>>>> >> >> cards. > >>>>> >> >> >> >> Changes in v4: > >>>>> >> >> >> >> Rebased onto chris-mmc/mmc-next branch. This > patch is > >>>>> >> >> >> >> successfully > >>>>> >> >> >> >> applied on commit with id > >>>>> >> >> >> >> de022ed3fdc14808299b2fa66dbb1ed5ab921912. > >>>>> >> >> >> >> Changes in v3: > >>>>> >> >> >> >> In the previous commits of chris-mmc/mmc-next > branch, > >>>>> >> the > >>>>> >> >> >> patch > >>>>> >> >> >> >> with > >>>>> >> >> >> >> commit id > (c0f22a2c92e357e7cb3988b0b13034d70b7461f9) > >>>>> >> >> defines > >>>>> >> >> >> >> caps2 for > >>>>> >> >> >> >> more capabilities. This patch version deletes > the > >>>>> member > >>>>> >> >> >> >> ext_caps(created > >>>>> >> >> >> >> in my earlier patch) from struct mmc_host and > reuses > >>>>> >> >> already > >>>>> >> >> >> >> accepted > >>>>> >> >> >> >> caps2 member. > >>>>> >> >> >> >> Changes in v2: > >>>>> >> >> >> >> Rebased to latest chris-mmc/mmc-next branch. > Resolved > >>>>> >> >> >> indentation > >>>>> >> >> >> >> problems identified in review. This patch has > to be > >>>>> >> applied > >>>>> >> >> >> >> before > >>>>> >> >> >> >> the patch released for modifying the printk > messages. > >>>>> >> >> >> >> Changes in v1: > >>>>> >> >> >> >> Case statements in switch that produce same > result > >>>>> have > >>>>> >> >> >> >> been combined to reduce repeated assignments. > >>>>> >> >> >> >> patch recreated after rebase to chris balls > mmc-next > >>>>> >> >> branch. > >>>>> >> >> >> >> > >>>>> >> >> >> >> drivers/mmc/core/bus.c | 3 +- > >>>>> >> >> >> >> drivers/mmc/core/mmc.c | 77 > >>>>> >> >> >> >> ++++++++++++++++++++++++++++++++++++++++---- > >>>>> >> >> >> >> drivers/mmc/core/sd.c | 3 +- > >>>>> >> >> >> >> drivers/mmc/core/sdio.c | 4 ++- > >>>>> >> >> >> >> drivers/mmc/host/sdhci.c | 38 +++++++++++++++++-- > --- > >>>>> >> >> >> >> include/linux/mmc/card.h | 3 ++ > >>>>> >> >> >> >> include/linux/mmc/host.h | 11 ++++++- > >>>>> >> >> >> >> include/linux/mmc/mmc.h | 66 > >>>>> >> >> >> >> ++++++++++++++++++++++++++++++++++++++- > >>>>> >> >> >> >> include/linux/mmc/sdhci.h | 1 + > >>>>> >> >> >> >> 9 files changed, 185 insertions(+), 21 deletions(-) > >>>>> >> >> >> >> > >>>>> >> >> >> >> diff --git a/drivers/mmc/core/bus.c > >>>>> b/drivers/mmc/core/bus.c > >>>>> >> >> >> >> index 5639fdf..83c9f8d 100644 > >>>>> >> >> >> >> --- a/drivers/mmc/core/bus.c > >>>>> >> >> >> >> +++ b/drivers/mmc/core/bus.c > >>>>> >> >> >> >> @@ -301,10 +301,11 @@ int mmc_add_card(struct > mmc_card > >>>>> *card) > >>>>> >> >> >> >> mmc_card_ddr_mode(card) ? "DDR > " : > >>>>> "", > >>>>> >> >> >> >> type); > >>>>> >> >> >> >> } else { > >>>>> >> >> >> >> - printk(KERN_INFO "%s: new %s%s%s card > at > >>>>> address > >>>>> >> >> >> %04x\n", > >>>>> >> >> >> >> + pr_info("%s: new %s%s%s%s card at > address > >>>>> >> %04x\n", > >>>>> >> >> >> >> mmc_hostname(card->host), > >>>>> >> >> >> >> mmc_card_uhs(card) ? "ultra > high > >>>>> speed " > >>>>> >> : > >>>>> >> >> >> >> (mmc_card_highspeed(card) ? > "high > >>>>> speed > >>>>> >> " : > >>>>> >> >> >> ""), > >>>>> >> >> >> >> + (mmc_card_hs200(card) ? "HS200 > " : > >>>>> ""), > >>>>> >> >> >> >> mmc_card_ddr_mode(card) ? "DDR > " : > >>>>> "", > >>>>> >> >> >> >> type, card->rca); > >>>>> >> >> >> >> } > >>>>> >> >> >> >> diff --git a/drivers/mmc/core/mmc.c > >>>>> b/drivers/mmc/core/mmc.c > >>>>> >> >> >> >> index a1223bd..f4124d6 100644 > >>>>> >> >> >> >> --- a/drivers/mmc/core/mmc.c > >>>>> >> >> >> >> +++ b/drivers/mmc/core/mmc.c > >>>>> >> >> >> >> @@ -285,6 +285,27 @@ static int > mmc_read_ext_csd(struct > >>>>> >> mmc_card > >>>>> >> >> >> *card, > >>>>> >> >> >> >> u8 *ext_csd) > >>>>> >> >> >> >> } > >>>>> >> >> >> >> card->ext_csd.raw_card_type = > >>>>> >> ext_csd[EXT_CSD_CARD_TYPE]; > >>>>> >> >> >> >> switch (ext_csd[EXT_CSD_CARD_TYPE] & > >>>>> >> >> EXT_CSD_CARD_TYPE_MASK) { > >>>>> >> >> >> >> + case EXT_CSD_CARD_TYPE_SDR_ALL: > >>>>> >> >> >> >> + case EXT_CSD_CARD_TYPE_SDR_ALL_DDR_1_8V: > >>>>> >> >> >> >> + case EXT_CSD_CARD_TYPE_SDR_ALL_DDR_1_2V: > >>>>> >> >> >> >> + case EXT_CSD_CARD_TYPE_SDR_ALL_DDR_52: > >>>>> >> >> >> >> + card->ext_csd.hs_max_dtr = 200000000; > >>>>> >> >> >> >> + card->ext_csd.card_type = > >>>>> >> >> EXT_CSD_CARD_TYPE_SDR_200; > >>>>> >> >> >> >> + break; > >>>>> >> >> >> >> + case EXT_CSD_CARD_TYPE_SDR_1_2V_ALL: > >>>>> >> >> >> >> + case EXT_CSD_CARD_TYPE_SDR_1_2V_DDR_1_8V: > >>>>> >> >> >> >> + case EXT_CSD_CARD_TYPE_SDR_1_2V_DDR_1_2V: > >>>>> >> >> >> >> + case EXT_CSD_CARD_TYPE_SDR_1_2V_DDR_52: > >>>>> >> >> >> >> + card->ext_csd.hs_max_dtr = 200000000; > >>>>> >> >> >> >> + card->ext_csd.card_type = > >>>>> >> >> EXT_CSD_CARD_TYPE_SDR_1_2V; > >>>>> >> >> >> >> + break; > >>>>> >> >> >> >> + case EXT_CSD_CARD_TYPE_SDR_1_8V_ALL: > >>>>> >> >> >> >> + case EXT_CSD_CARD_TYPE_SDR_1_8V_DDR_1_8V: > >>>>> >> >> >> >> + case EXT_CSD_CARD_TYPE_SDR_1_8V_DDR_1_2V: > >>>>> >> >> >> >> + case EXT_CSD_CARD_TYPE_SDR_1_8V_DDR_52: > >>>>> >> >> >> >> + card->ext_csd.hs_max_dtr = 200000000; > >>>>> >> >> >> >> + card->ext_csd.card_type = > >>>>> >> >> EXT_CSD_CARD_TYPE_SDR_1_8V; > >>>>> >> >> >> >> + break; > >>>>> >> >> >> >> case EXT_CSD_CARD_TYPE_DDR_52 | > EXT_CSD_CARD_TYPE_52 > >>>>> | > >>>>> >> >> >> >> EXT_CSD_CARD_TYPE_26: > >>>>> >> >> >> >> card->ext_csd.hs_max_dtr = 52000000; > >>>>> >> >> >> >> @@ -699,6 +720,7 @@ static int mmc_init_card(struct > >>>>> mmc_host > >>>>> >> >> *host, > >>>>> >> >> >> u32 > >>>>> >> >> >> >> ocr, > >>>>> >> >> >> >> { > >>>>> >> >> >> >> struct mmc_card *card; > >>>>> >> >> >> >> int err, ddr = 0; > >>>>> >> >> >> >> + int hs_sdr = 0; > >>>>> >> >> >> >> u32 cid[4]; > >>>>> >> >> >> >> unsigned int max_dtr; > >>>>> >> >> >> >> u32 rocr; > >>>>> >> >> >> >> @@ -894,11 +916,16 @@ static int mmc_init_card(struct > >>>>> mmc_host > >>>>> >> >> >> *host, > >>>>> >> >> >> >> u32 ocr, > >>>>> >> >> >> >> /* > >>>>> >> >> >> >> * Activate high speed (if supported) > >>>>> >> >> >> >> */ > >>>>> >> >> >> >> - if ((card->ext_csd.hs_max_dtr != 0) && > >>>>> >> >> >> >> - (host->caps & MMC_CAP_MMC_HIGHSPEED)) { > >>>>> >> >> >> >> - err = mmc_switch(card, > >>>>> EXT_CSD_CMD_SET_NORMAL, > >>>>> >> >> >> >> - EXT_CSD_HS_TIMING, 1, > >>>>> >> >> >> >> - card- > >>>>> >> >ext_csd.generic_cmd6_time); > >>>>> >> >> >> >> + if (card->ext_csd.hs_max_dtr != 0) { > >>>>> >> >> >> >> + err = 0; > >>>>> >> >> >> >> + if ((card->ext_csd.hs_max_dtr > > 52000000) && > >>>>> >> >> >> >> + (host->caps2 & MMC_CAP2_HS200)) > >>>>> >> >> >> >> + err = mmc_switch(card, > >>>>> >> >> EXT_CSD_CMD_SET_NORMAL, > >>>>> >> >> >> >> + > EXT_CSD_HS_TIMING, > >>>>> 2, > >>>>> >> 0); > >>>>> >> >> >> >> + else if (host->caps & > MMC_CAP_MMC_HIGHSPEED) > >>>>> >> >> >> >> + err = mmc_switch(card, > >>>>> >> >> EXT_CSD_CMD_SET_NORMAL, > >>>>> >> >> >> >> + > EXT_CSD_HS_TIMING, > >>>>> 1, > >>>>> >> 0); > >>>>> >> >> >> >> + > >>>>> >> >> >> >> if (err && err != -EBADMSG) > >>>>> >> >> >> >> goto free_card; > >>>>> >> >> >> >> > >>>>> >> >> >> >> @@ -907,7 +934,11 @@ static int mmc_init_card(struct > >>>>> mmc_host > >>>>> >> >> *host, > >>>>> >> >> >> >> u32 ocr, > >>>>> >> >> >> >> mmc_hostname(card- > >host)); > >>>>> >> >> >> >> err = 0; > >>>>> >> >> >> >> } else { > >>>>> >> >> >> >> - mmc_card_set_highspeed(card); > >>>>> >> >> >> >> + if ((card->ext_csd.hs_max_dtr > > >>>>> >> 52000000) > >>>>> >> >> && > >>>>> >> >> >> >> + (host->caps2 & > MMC_CAP2_HS200)) > >>>>> >> >> >> >> + > mmc_card_set_hs200(card); > >>>>> >> >> >> >> + else > >>>>> >> >> >> >> + > mmc_card_set_highspeed(card); > >>>>> >> >> >> >> mmc_set_timing(card->host, > >>>>> >> >> MMC_TIMING_MMC_HS); > >>>>> >> >> >> > > >>>>> >> >> >> > MMC_TIMING_MMC_HS200 is defined but still not used. > >>>>> >> >> >> > > >>>>> >> >> >> > So I guess it should be like this :: > >>>>> >> >> >> > + if ((card->ext_csd.hs_max_dtr > > > >>>>> >> 52000000) > >>>>> >> >> && > >>>>> >> >> >> > + (host->caps2 & > MMC_CAP2_HS200)) > >>>>> { > >>>>> >> >> >> > + > mmc_card_set_hs200(card); > >>>>> >> >> >> > + mmc_set_timing(card->host, > >>>>> >> >> >> MMC_TIMING_MMC_HS200) > >>>>> >> >> >> > + } else { > >>>>> >> >> >> > + > >>>>> mmc_card_set_highspeed(card); > >>>>> >> >> >> > + mmc_set_timing(card- > >host, > >>>>> >> >> >> > MMC_TIMING_MMC_HS) > >>>>> >> >> >> > + } > >>>>> >> >> >> > > >>>>> >> >> >> > > >>>>> >> >> >> > > >>>>> >> >> >> > > >>>>> >> >> >> > > >>>>> >> >> >> > > >>>>> >> >> >> > > >>>>> >> >> >> > > >>>>> >> >> >> > > >>>>> >> >> >> > > >>>>> >> >> >> > > >>>>> >> >> >> > > >>>>> >> >> >> > > >>>>> >> >> >> > > >>>>> >> >> >> >> } > >>>>> >> >> >> >> } > >>>>> >> >> >> >> @@ -933,7 +964,7 @@ static int mmc_init_card(struct > >>>>> mmc_host > >>>>> >> >> *host, > >>>>> >> >> >> u32 > >>>>> >> >> >> >> ocr, > >>>>> >> >> >> >> */ > >>>>> >> >> >> >> max_dtr = (unsigned int)-1; > >>>>> >> >> >> >> > >>>>> >> >> >> >> - if (mmc_card_highspeed(card)) { > >>>>> >> >> >> >> + if (mmc_card_highspeed(card) || > mmc_card_hs200(card)) > >>>>> { > >>>>> >> >> >> >> if (max_dtr > card->ext_csd.hs_max_dtr) > >>>>> >> >> >> >> max_dtr = card- > >ext_csd.hs_max_dtr; > >>>>> >> >> >> >> } else if (max_dtr > card->csd.max_dtr) { > >>>>> >> >> >> >> @@ -959,6 +990,18 @@ static int mmc_init_card(struct > >>>>> mmc_host > >>>>> >> >> *host, > >>>>> >> >> >> >> u32 ocr, > >>>>> >> >> >> >> } > >>>>> >> >> >> >> > >>>>> >> >> >> >> /* > >>>>> >> >> >> >> + * Indicate HS200 SDR mode (if supported). > >>>>> >> >> >> >> + */ > >>>>> >> >> >> >> + if (mmc_card_hs200(card)) { > >>>>> >> >> >> >> + if ((card->ext_csd.card_type & > >>>>> >> >> >> EXT_CSD_CARD_TYPE_SDR_1_8V) > >>>>> >> >> >> >> + && (host->caps2 & > >>>>> >> MMC_CAP2_HS200_1_8V_SDR)) > >>>>> >> >> >> >> + hs_sdr = > MMC_1_8V_SDR_MODE; > >>>>> >> >> >> >> + else if ((card->ext_csd.card_type & > >>>>> >> >> >> >> EXT_CSD_CARD_TYPE_SDR_1_2V) > >>>>> >> >> >> >> + && (host->caps2 & > >>>>> >> MMC_CAP2_HS200_1_2V_SDR)) > >>>>> >> >> >> >> + hs_sdr = > MMC_1_2V_SDR_MODE; > >>>>> >> >> >> >> + } > >>>>> >> >> >> >> + > >>>>> >> >> >> >> + /* > >>>>> >> >> >> >> * Activate wide bus and DDR (if supported). > >>>>> >> >> >> >> */ > >>>>> >> >> >> >> if ((card->csd.mmca_vsn >= CSD_SPEC_VER_4) && > >>>>> >> >> >> >> @@ -998,6 +1041,17 @@ static int mmc_init_card(struct > >>>>> mmc_host > >>>>> >> >> >> *host, > >>>>> >> >> >> >> u32 ocr, > >>>>> >> >> >> >> if (!err) { > >>>>> >> >> >> >> mmc_set_bus_width(card- > >host, > >>>>> >> >> >> bus_width); > >>>>> >> >> >> >> > >>>>> >> >> >> >> + if ((host->caps2 & > >>>>> >> MMC_CAP2_HS200) > >>>>> >> >> && > >>>>> >> >> >> >> + card->host->ops- > >>>>> >> >> >execute_tuning) > >>>>> >> >> >> >> + err = card- > >host- > >>>>> >ops-> > >>>>> >> \ > >>>>> >> >> >> >> + > >>>>> >> execute_tuning(card- > >>>>> >> >> >> >host, > >>>>> >> >> >> >> + > >>>>> >> >> >> > MMC_SEND_TUNING_BLOCK_HS200); > >>>>> >> >> >> > > >>>>> >> >> >> > > >>>>> >> >> >> > execute_tuning should be done right after the timing > is > >>>>> changed > >>>>> >> to > >>>>> >> >> >> HS200 and > >>>>> >> >> >> > clock rate is changed to 200Mhz. This is not the > correct > >>>>> >> sequence > >>>>> >> >> to > >>>>> >> >> >> call > >>>>> >> >> >> > the execute_tuning(). > >>>>> >> >> >> > As told earlier, It is mentioned in the spec that > tuning > >>>>> should > >>>>> >> be > >>>>> >> >> >> executed after change of buswidth (mandatory). Also it > >>>>> mentions > >>>>> >> that > >>>>> >> >> >> "The host may invoke the HS200 tuning sequence, by > sending > >>>>> CMD21 > >>>>> >> to > >>>>> >> >> the > >>>>> >> >> >> device". It means that > >>>>> >> >> >> after setting the HS200 mode, Changing to freq > 52Mhz > and > >>>>> >> changing > >>>>> >> >> >> the bus width tuning can be executed anytime to identify > the > >>>>> >> >> sampling > >>>>> >> >> >> point to read.(By anytime i mean before actual block > read > >>>>> >> >> Operation). > >>>>> >> >> >> Can you please point me to the place in the spec where > it > >>>>> >> specifies > >>>>> >> >> >> tuning should be done immediately after freq change (may > be i > >>>>> >> missed > >>>>> >> >> >> to read it). > >>>>> >> >> > > >>>>> >> >> > > >>>>> >> >> > Ok. let me ask you this. Why do we run the > execute_tuning()? > >>>>> It's > >>>>> >> to > >>>>> >> >> tune > >>>>> >> >> > the sampling clock generator of host controller before > you > >>>>> start > >>>>> >> any > >>>>> >> >> read > >>>>> >> >> > operation (on command line or data line) from card. If > you > >>>>> don't > >>>>> >> tune > >>>>> >> >> the > >>>>> >> >> > sampling clock generator before the read operation (after > >>>>> changing > >>>>> >> >> the > >>>>> >> >> > timing to HS200 and clock rate to 200mhz), you can't be > sure > >>>>> that > >>>>> >> >> read > >>>>> >> >> > operation from card will be completed without errors. You > may > >>>>> get > >>>>> >> the > >>>>> >> >> data / > >>>>> >> >> > cmd response CRC errors. At least this will surely fail > on our > >>>>> MSM > >>>>> >> >> SDCC host > >>>>> >> >> > controller. That's what we had faced with SD3.0 UHS-I > tuning as > >>>>> >> well > >>>>> >> >> as > >>>>> >> >> > mentioned in http://www.spinics.net/lists/linux-arm- > >>>>> >> >> msm/msg03867.html. > >>>>> >> > > >>>>> >> >> > this tuning is done before any read opration for the best > bus > >>>>> >> width > >>>>> >> >> supported. > >>>>> >> > Agreed. But can we be sure that "command response" for bus > width > >>>>> >> change via > >>>>> >> > CMD6, will not have any command CRC failures if tuning is > not > >>>>> done? > >>>>> >> All responses are sent on CMD line not on data lines, And > sampling > >>>>> is > >>>>> >> done for Data lines before reading. So command CRC failure > doesnt > >>>>> >> depend on tuning. If you get error during CMD6 it could be > that > >>>>> device > >>>>> >> cannot support the bus width at the set frequency. > >>>>> > > >>>>> > I guess it's not the correct assumption here. Sampling point > tuning > >>>>> is to > >>>>> Its Not assumption "Specification says responses are all sent on > CMD > >>>>> only" > >>>> > >>>> > >>>> > >>>> Where does it say that tuning is not required for data received on > command > >>>> line? If the 200Mhz clock can effect the data received on DATA > lines then > >>>> why it won't affect the data (responses) received on CMD lines? > >>>> If you still have doubt, I would suggest to get the clarification > from > >>>> JEDEC. From SD3.01 spec, for sure CMD lines also requires tuning. > >>>> > >>>> "Sampling clock generation" on our host controller also says that > tuning is > >>>> required for data transfer on both DATA and CMD lines. > >>>> > >>>> I am not sure what is the issue with doing the tuning immediately > after > >>>> changing to bus speed mode to HS200 (changing controller timing, > changing > >>>> clock etc ...)? This is what we are doing it for SD3.0 cards as > well. > >>>> > >>>> Your current implementation is not going to work with all host > controllers. > >>>> > >>>> > >>>> > >>>> > >>>> > >>>> > >>>>> > tune the sampling point for data received on both CMD and DATA > lines > >>>>> (not > >>>>> > just data lines). I can't find detailed mentioning of this in > eMMC4.5 > >>>>> Pls check the section 6.6.7.1. the 2nd paragraph quotes "which in > turn > >>>>> uses it to find the > >>>>> optimal sampling point for the data lines" > >>>>> > (that's the documentation short coming, you can even confirm > whether > >>>>> tuning > >>>>> > procedure is required for CMD line or not from JEDEC) but > SD3.01 > >>>>> > specification does mention this tuning procedure in great > details. > >>>>> NOTE: > >>>>> > eMMC4.5 HS200 mode is mostly inspired from SD3.01 UHS-I bus > speed > >>>>> modes. > >>>>> > > >>>>> > Section " 4.2.4.5 Tuning Command" in "SD3.01 - Simplified > >>>>> > > >>>>> > (Part_1_Physical_Layer_Simplified_Specification_Ver_3.01_Final_100518)" > >>>>> > specification(can be downloaded from here: > >>>>> > https://www.sdcard.org/downloads/pls/), clearly states this: > >>>>> > > >>>>> > 4.2.4.5 Tuning Command > >>>>> > CMD19 is defined for Send Tuning Block Command. R1 type > response is > >>>>> defined. > >>>>> > CMD19 can be > >>>>> > executed in transfer state of 1.8V signaling mode while the > card is > >>>>> > unlocked. The other case, CMD19 is > >>>>> > treated as illegal command. Data block, carried by DAT[3:0], > contains > >>>>> a > >>>>> > pattern for tuning sampling > >>>>> > position to receive data on the CMD and DAT[3:0] line. The > block > >>>>> length of > >>>>> > CMD19 is fixed and CMD16 > >>>>> > is not required. > >>>>> > I have no idea of the SD spec. I have just seen the eMMC spec > and > >>>>> above quotes might answer your doubt > >>>>> > So before tuning, you may get the Command CRC errors in HS200 > mode. > >>>>> > > >>>>> > Regards, > >>>>> > Subhash > >>>>> > > >>>>> >> > > >>>>> >> >> ps:Chris need your comment on this > >>>>> >> >> > > >>>>> >> >> >> >> + > >>>>> >> >> >> >> + if (err) { > >>>>> >> >> >> >> + > pr_warning("tuning > >>>>> >> >> execution > >>>>> >> >> >> > failed\n"); > >>>>> >> >> >> >> + continue; > >>>>> >> >> >> >> + } > >>>>> >> >> >> >> + > >>>>> >> >> >> >> /* > >>>>> >> >> >> >> * If controller can't > handle > >>>>> >> bus > >>>>> >> >> >> width > >>>>> >> >> >> > test, > >>>>> >> >> >> >> * compare ext_csd > previously > >>>>> >> read > >>>>> >> >> in > >>>>> >> >> >> 1 bit > >>>>> >> >> >> >> mode > >>>>> >> >> >> >> @@ -1056,6 +1110,15 @@ static int > mmc_init_card(struct > >>>>> >> mmc_host > >>>>> >> >> >> *host, > >>>>> >> >> >> >> u32 ocr, > >>>>> >> >> >> >> mmc_card_set_ddr_mode(card); > >>>>> >> >> >> >> mmc_set_timing(card->host, > >>>>> >> >> >> MMC_TIMING_UHS_DDR50); > >>>>> >> >> >> >> mmc_set_bus_width(card->host, > >>>>> >> bus_width); > >>>>> >> >> >> >> + } else if (hs_sdr) { > >>>>> >> >> >> >> + if (hs_sdr == > >>>>> >> EXT_CSD_CARD_TYPE_SDR_1_2V) { > >>>>> >> >> >> >> + err = > >>>>> >> mmc_set_signal_voltage(host, > >>>>> >> >> >> >> + > >>>>> MMC_SIGNAL_VOLTAGE_120, > >>>>> >> 0); > >>>>> >> >> >> >> + if (err) > >>>>> >> >> >> >> + goto err; > >>>>> >> >> >> >> + } > >>>>> >> >> >> >> + mmc_set_timing(card->host, > >>>>> >> >> MMC_TIMING_MMC_HS); > >>>>> >> >> >> >> + mmc_set_bus_width(card->host, > >>>>> >> bus_width); > >>>>> >> >> >> >> } > >>>>> >> >> >> >> } > >>>>> >> >> >> >> > >>>>> >> >> >> >> diff --git a/drivers/mmc/core/sd.c > b/drivers/mmc/core/sd.c > >>>>> >> >> >> >> index 1d5a3bd..c1d3ee3 100644 > >>>>> >> >> >> >> --- a/drivers/mmc/core/sd.c > >>>>> >> >> >> >> +++ b/drivers/mmc/core/sd.c > >>>>> >> >> >> >> @@ -660,7 +660,8 @@ static int > mmc_sd_init_uhs_card(struct > >>>>> >> >> mmc_card > >>>>> >> >> >> >> *card) > >>>>> >> >> >> >> > >>>>> >> >> >> >> /* SPI mode doesn't define CMD19 */ > >>>>> >> >> >> >> if (!mmc_host_is_spi(card->host) && card->host- > >ops- > >>>>> >> >> >> >> >execute_tuning) > >>>>> >> >> >> >> - err = card->host->ops- > >execute_tuning(card- > >>>>> >> >host); > >>>>> >> >> >> >> + err = card->host->ops- > >execute_tuning(card- > >>>>> >> >host, > >>>>> >> >> >> \ > >>>>> >> >> >> >> + > >>>>> >> >> >> > MMC_SEND_TUNING_BLOCK); > >>>>> >> >> >> >> > >>>>> >> >> >> >> out: > >>>>> >> >> >> >> kfree(status); > >>>>> >> >> >> >> diff --git a/drivers/mmc/core/sdio.c > >>>>> b/drivers/mmc/core/sdio.c > >>>>> >> >> >> >> index 8c04f7f..8ef8817 100644 > >>>>> >> >> >> >> --- a/drivers/mmc/core/sdio.c > >>>>> >> >> >> >> +++ b/drivers/mmc/core/sdio.c > >>>>> >> >> >> >> @@ -14,6 +14,7 @@ > >>>>> >> >> >> >> > >>>>> >> >> >> >> #include <linux/mmc/host.h> > >>>>> >> >> >> >> #include <linux/mmc/card.h> > >>>>> >> >> >> >> +#include <linux/mmc/mmc.h> > >>>>> >> >> >> >> #include <linux/mmc/sdio.h> > >>>>> >> >> >> >> #include <linux/mmc/sdio_func.h> > >>>>> >> >> >> >> #include <linux/mmc/sdio_ids.h> > >>>>> >> >> >> >> @@ -556,7 +557,8 @@ static int > >>>>> mmc_sdio_init_uhs_card(struct > >>>>> >> >> >> mmc_card > >>>>> >> >> >> >> *card) > >>>>> >> >> >> >> > >>>>> >> >> >> >> /* Initialize and start re-tuning timer */ > >>>>> >> >> >> >> if (!mmc_host_is_spi(card->host) && card->host- > >ops- > >>>>> >> >> >> >> >execute_tuning) > >>>>> >> >> >> >> - err = card->host->ops- > >execute_tuning(card- > >>>>> >> >host); > >>>>> >> >> >> >> + err = card->host->ops- > >execute_tuning(card- > >>>>> >> >host, > >>>>> >> >> >> >> + > >>>>> >> >> >> > MMC_SEND_TUNING_BLOCK); > >>>>> >> >> >> >> > >>>>> >> >> >> >> out: > >>>>> >> >> >> >> > >>>>> >> >> >> >> diff --git a/drivers/mmc/host/sdhci.c > >>>>> >> b/drivers/mmc/host/sdhci.c > >>>>> >> >> >> >> index a7c2311..13d74bb 100644 > >>>>> >> >> >> >> --- a/drivers/mmc/host/sdhci.c > >>>>> >> >> >> >> +++ b/drivers/mmc/host/sdhci.c > >>>>> >> >> >> >> @@ -49,7 +49,7 @@ static void > sdhci_finish_data(struct > >>>>> >> sdhci_host > >>>>> >> >> >> *); > >>>>> >> >> >> >> > >>>>> >> >> >> >> static void sdhci_send_command(struct sdhci_host *, > struct > >>>>> >> >> >> mmc_command > >>>>> >> >> >> >> *); > >>>>> >> >> >> >> static void sdhci_finish_command(struct sdhci_host > *); > >>>>> >> >> >> >> -static int sdhci_execute_tuning(struct mmc_host > *mmc); > >>>>> >> >> >> >> +static int sdhci_execute_tuning(struct mmc_host > *mmc, u32 > >>>>> >> >> opcode); > >>>>> >> >> >> >> static void sdhci_tuning_timer(unsigned long data); > >>>>> >> >> >> >> > >>>>> >> >> >> >> #ifdef CONFIG_PM_RUNTIME > >>>>> >> >> >> >> @@ -1016,7 +1016,8 @@ static void > sdhci_send_command(struct > >>>>> >> >> >> sdhci_host > >>>>> >> >> >> >> *host, struct mmc_command *cmd) > >>>>> >> >> >> >> flags |= SDHCI_CMD_INDEX; > >>>>> >> >> >> >> > >>>>> >> >> >> >> /* CMD19 is special in that the Data Present > Select > >>>>> >> should > >>>>> >> >> be > >>>>> >> >> >> set > >>>>> >> >> >> >> */ > >>>>> >> >> >> >> - if (cmd->data || (cmd->opcode == > >>>>> MMC_SEND_TUNING_BLOCK)) > >>>>> >> >> >> >> + if (cmd->data || (cmd->opcode == > >>>>> MMC_SEND_TUNING_BLOCK) > >>>>> >> || > >>>>> >> >> >> >> + (cmd->opcode == > MMC_SEND_TUNING_BLOCK_HS200)) > >>>>> >> >> >> >> flags |= SDHCI_CMD_DATA; > >>>>> >> >> >> >> > >>>>> >> >> >> >> sdhci_writew(host, SDHCI_MAKE_CMD(cmd->opcode, > >>>>> flags), > >>>>> >> >> >> >> SDHCI_COMMAND); > >>>>> >> >> >> >> @@ -1287,7 +1288,7 @@ static void > sdhci_request(struct > >>>>> >> mmc_host > >>>>> >> >> >> *mmc, > >>>>> >> >> >> >> struct mmc_request *mrq) > >>>>> >> >> >> >> if ((host->flags & > SDHCI_NEEDS_RETUNING) && > >>>>> >> >> >> >> !(present_state & > (SDHCI_DOING_WRITE | > >>>>> >> >> >> >> SDHCI_DOING_READ))) { > >>>>> >> >> >> >> spin_unlock_irqrestore(&host- > >lock, > >>>>> >> flags); > >>>>> >> >> >> >> - sdhci_execute_tuning(mmc); > >>>>> >> >> >> >> + sdhci_execute_tuning(mmc, mrq- > >cmd- > >>>>> >> >> >opcode); > >>>>> >> >> >> >> spin_lock_irqsave(&host->lock, > >>>>> flags); > >>>>> >> >> >> >> > >>>>> >> >> >> >> /* Restore original mmc_request > >>>>> >> structure > >>>>> >> >> */ > >>>>> >> >> >> >> @@ -1673,7 +1674,7 @@ static int > >>>>> >> >> >> >> sdhci_start_signal_voltage_switch(struct mmc_host > *mmc, > >>>>> >> >> >> >> return err; > >>>>> >> >> >> >> } > >>>>> >> >> >> >> > >>>>> >> >> >> >> -static int sdhci_execute_tuning(struct mmc_host > *mmc) > >>>>> >> >> >> >> +static int sdhci_execute_tuning(struct mmc_host > *mmc, u32 > >>>>> >> >> opcode) > >>>>> >> >> >> >> { > >>>>> >> >> >> >> struct sdhci_host *host; > >>>>> >> >> >> >> u16 ctrl; > >>>>> >> >> >> >> @@ -1694,10 +1695,13 @@ static int > >>>>> sdhci_execute_tuning(struct > >>>>> >> >> >> mmc_host > >>>>> >> >> >> >> *mmc) > >>>>> >> >> >> >> * Host Controller needs tuning only in case of > >>>>> SDR104 > >>>>> >> mode > >>>>> >> >> >> >> * and for SDR50 mode when Use Tuning for SDR50 > is > >>>>> set > >>>>> >> in > >>>>> >> >> >> >> * Capabilities register. > >>>>> >> >> >> >> + * If the Host Controller supports the HS200 > mode > >>>>> then > >>>>> >> >> tuning > >>>>> >> >> >> >> + * function has to be executed. > >>>>> >> >> >> >> */ > >>>>> >> >> >> >> if (((ctrl & SDHCI_CTRL_UHS_MASK) == > >>>>> >> SDHCI_CTRL_UHS_SDR104) > >>>>> >> >> || > >>>>> >> >> >> >> (((ctrl & SDHCI_CTRL_UHS_MASK) == > >>>>> >> SDHCI_CTRL_UHS_SDR50) > >>>>> >> >> && > >>>>> >> >> >> >> - (host->flags & SDHCI_SDR50_NEEDS_TUNING))) > >>>>> >> >> >> >> + (host->flags & SDHCI_SDR50_NEEDS_TUNING)) > || > >>>>> >> >> >> >> + (host->flags & SDHCI_HS200_NEEDS_TUNING)) > >>>>> >> >> >> >> ctrl |= SDHCI_CTRL_EXEC_TUNING; > >>>>> >> >> >> >> else { > >>>>> >> >> >> >> spin_unlock(&host->lock); > >>>>> >> >> >> >> @@ -1733,7 +1737,7 @@ static int > >>>>> sdhci_execute_tuning(struct > >>>>> >> >> >> mmc_host > >>>>> >> >> >> >> *mmc) > >>>>> >> >> >> >> if (!tuning_loop_counter && !timeout) > >>>>> >> >> >> >> break; > >>>>> >> >> >> >> > >>>>> >> >> >> >> - cmd.opcode = MMC_SEND_TUNING_BLOCK; > >>>>> >> >> >> >> + cmd.opcode = opcode; > >>>>> >> >> >> >> cmd.arg = 0; > >>>>> >> >> >> >> cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC; > >>>>> >> >> >> >> cmd.retries = 0; > >>>>> >> >> >> >> @@ -1748,7 +1752,17 @@ static int > >>>>> sdhci_execute_tuning(struct > >>>>> >> >> >> mmc_host > >>>>> >> >> >> >> *mmc) > >>>>> >> >> >> >> * block to the Host Controller. So we > set > >>>>> the > >>>>> >> >> block > >>>>> >> >> >> size > >>>>> >> >> >> >> * to 64 here. > >>>>> >> >> >> >> */ > >>>>> >> >> >> >> - sdhci_writew(host, SDHCI_MAKE_BLKSZ(7, > 64), > >>>>> >> >> >> >> SDHCI_BLOCK_SIZE); > >>>>> >> >> >> >> + if (cmd.opcode == > >>>>> MMC_SEND_TUNING_BLOCK_HS200) { > >>>>> >> >> >> >> + if (mmc->ios.bus_width == > >>>>> >> MMC_BUS_WIDTH_8) > >>>>> >> >> >> >> + sdhci_writew(host, > >>>>> >> >> SDHCI_MAKE_BLKSZ(7, > >>>>> >> >> >> 128), > >>>>> >> >> >> >> + > >>>>> SDHCI_BLOCK_SIZE); > >>>>> >> >> >> >> + else if (mmc->ios.bus_width == > >>>>> >> >> >> MMC_BUS_WIDTH_4) > >>>>> >> >> >> >> + sdhci_writew(host, > >>>>> >> >> SDHCI_MAKE_BLKSZ(7, > >>>>> >> >> >> 64), > >>>>> >> >> >> >> + > >>>>> SDHCI_BLOCK_SIZE); > >>>>> >> >> >> >> + } else { > >>>>> >> >> >> >> + sdhci_writew(host, > >>>>> SDHCI_MAKE_BLKSZ(7, > >>>>> >> 64), > >>>>> >> >> >> >> + SDHCI_BLOCK_SIZE); > >>>>> >> >> >> >> + } > >>>>> >> >> >> >> > >>>>> >> >> >> >> /* > >>>>> >> >> >> >> * The tuning block is sent by the card > to > >>>>> the > >>>>> >> host > >>>>> >> >> >> >> controller. > >>>>> >> >> >> >> @@ -2131,12 +2145,14 @@ static void > >>>>> >> sdhci_show_adma_error(struct > >>>>> >> >> >> >> sdhci_host *host) { } > >>>>> >> >> >> >> > >>>>> >> >> >> >> static void sdhci_data_irq(struct sdhci_host *host, > u32 > >>>>> >> intmask) > >>>>> >> >> >> >> { > >>>>> >> >> >> >> + u32 command; > >>>>> >> >> >> >> BUG_ON(intmask == 0); > >>>>> >> >> >> >> > >>>>> >> >> >> >> /* CMD19 generates _only_ Buffer Read Ready > interrupt > >>>>> */ > >>>>> >> >> >> >> if (intmask & SDHCI_INT_DATA_AVAIL) { > >>>>> >> >> >> >> - if (SDHCI_GET_CMD(sdhci_readw(host, > >>>>> >> SDHCI_COMMAND)) > >>>>> >> >> == > >>>>> >> >> >> >> - MMC_SEND_TUNING_BLOCK) { > >>>>> >> >> >> >> + command = > SDHCI_GET_CMD(sdhci_readw(host, > >>>>> >> >> >> SDHCI_COMMAND)); > >>>>> >> >> >> >> + if ((command == MMC_SEND_TUNING_BLOCK) > || > >>>>> >> >> >> >> + (command == > MMC_SEND_TUNING_BLOCK_HS200)) > >>>>> { > >>>>> >> >> >> >> host->tuning_done = 1; > >>>>> >> >> >> >> wake_up(&host->buf_ready_int); > >>>>> >> >> >> >> return; > >>>>> >> >> >> >> @@ -2741,6 +2757,10 @@ int sdhci_add_host(struct > sdhci_host > >>>>> >> >> *host) > >>>>> >> >> >> >> if (caps[1] & SDHCI_USE_SDR50_TUNING) > >>>>> >> >> >> >> host->flags |= > SDHCI_SDR50_NEEDS_TUNING; > >>>>> >> >> >> >> > >>>>> >> >> >> >> + /* Does the host needs tuning for HS200? */ > >>>>> >> >> >> >> + if (mmc->caps2 & MMC_CAP2_HS200) > >>>>> >> >> >> >> + host->flags |= > SDHCI_HS200_NEEDS_TUNING; > >>>>> >> >> >> >> + > >>>>> >> >> >> >> /* Driver Type(s) (A, C, D) supported by the > host */ > >>>>> >> >> >> >> if (caps[1] & SDHCI_DRIVER_TYPE_A) > >>>>> >> >> >> >> mmc->caps |= MMC_CAP_DRIVER_TYPE_A; > >>>>> >> >> >> >> diff --git a/include/linux/mmc/card.h > >>>>> >> b/include/linux/mmc/card.h > >>>>> >> >> >> >> index 534974c..e76f649 100644 > >>>>> >> >> >> >> --- a/include/linux/mmc/card.h > >>>>> >> >> >> >> +++ b/include/linux/mmc/card.h > >>>>> >> >> >> >> @@ -209,6 +209,7 @@ struct mmc_card { > >>>>> >> >> >> >> #define MMC_STATE_HIGHSPEED_DDR (1<<4) > /* > >>>>> card > >>>>> >> is > >>>>> >> >> in > >>>>> >> >> >> high > >>>>> >> >> >> >> speed mode */ > >>>>> >> >> >> >> #define MMC_STATE_ULTRAHIGHSPEED (1<<5) > /* > >>>>> card > >>>>> >> is > >>>>> >> >> in > >>>>> >> >> >> ultra > >>>>> >> >> >> >> high speed mode */ > >>>>> >> >> >> >> #define MMC_CARD_SDXC (1<<6) > /* > >>>>> card > >>>>> >> is > >>>>> >> >> >> SDXC */ > >>>>> >> >> >> >> +#define MMC_STATE_HIGHSPEED_200 (1<<7) /* card > is in > >>>>> >> HS200 > >>>>> >> >> >> >> mode */ > >>>>> >> >> >> >> unsigned int quirks; /* card > >>>>> quirks > >>>>> >> */ > >>>>> >> >> >> >> #define MMC_QUIRK_LENIENT_FN0 (1<<0) > /* > >>>>> allow > >>>>> >> >> SDIO > >>>>> >> >> >> FN0 > >>>>> >> >> >> >> writes outside of the VS CCCR range */ > >>>>> >> >> >> >> #define MMC_QUIRK_BLKSZ_FOR_BYTE_MODE (1<<1) /* use > func- > >>>>> >> >> >> >> >cur_blksize */ > >>>>> >> >> >> >> @@ -365,6 +366,7 @@ static inline void __maybe_unused > >>>>> >> >> >> >> remove_quirk(struct mmc_card *card, int data) > >>>>> >> >> >> >> #define mmc_card_present(c) ((c)->state & > >>>>> MMC_STATE_PRESENT) > >>>>> >> >> >> >> #define mmc_card_readonly(c) ((c)->state & > >>>>> >> MMC_STATE_READONLY) > >>>>> >> >> >> >> #define mmc_card_highspeed(c) ((c)->state & > >>>>> >> >> >> MMC_STATE_HIGHSPEED) > >>>>> >> >> >> >> +#define mmc_card_hs200(c) ((c)->state & > >>>>> >> >> MMC_STATE_HIGHSPEED_200) > >>>>> >> >> >> >> #define mmc_card_blockaddr(c) ((c)->state & > >>>>> >> >> >> MMC_STATE_BLOCKADDR) > >>>>> >> >> >> >> #define mmc_card_ddr_mode(c) ((c)->state & > >>>>> >> >> MMC_STATE_HIGHSPEED_DDR) > >>>>> >> >> >> >> #define mmc_card_uhs(c) ((c)->state & > >>>>> >> >> >> >> MMC_STATE_ULTRAHIGHSPEED) > >>>>> >> >> >> >> @@ -374,6 +376,7 @@ static inline void __maybe_unused > >>>>> >> >> >> >> remove_quirk(struct mmc_card *card, int data) > >>>>> >> >> >> >> #define mmc_card_set_present(c) ((c)->state |= > >>>>> >> >> >> MMC_STATE_PRESENT) > >>>>> >> >> >> >> #define mmc_card_set_readonly(c) ((c)->state |= > >>>>> >> >> MMC_STATE_READONLY) > >>>>> >> >> >> >> #define mmc_card_set_highspeed(c) ((c)->state |= > >>>>> >> >> >> MMC_STATE_HIGHSPEED) > >>>>> >> >> >> >> +#define mmc_card_set_hs200(c) ((c)->state |= > >>>>> >> >> >> >> MMC_STATE_HIGHSPEED_200) > >>>>> >> >> >> >> #define mmc_card_set_blockaddr(c) ((c)->state |= > >>>>> >> >> >> MMC_STATE_BLOCKADDR) > >>>>> >> >> >> >> #define mmc_card_set_ddr_mode(c) ((c)->state |= > >>>>> >> >> >> >> MMC_STATE_HIGHSPEED_DDR) > >>>>> >> >> >> >> #define mmc_card_set_uhs(c) ((c)->state |= > >>>>> >> >> >> MMC_STATE_ULTRAHIGHSPEED) > >>>>> >> >> >> >> diff --git a/include/linux/mmc/host.h > >>>>> >> b/include/linux/mmc/host.h > >>>>> >> >> >> >> index 706f722..5eac57a 100644 > >>>>> >> >> >> >> --- a/include/linux/mmc/host.h > >>>>> >> >> >> >> +++ b/include/linux/mmc/host.h > >>>>> >> >> >> >> @@ -50,6 +50,7 @@ struct mmc_ios { > >>>>> >> >> >> >> > >>>>> >> >> >> >> #define MMC_TIMING_LEGACY 0 > >>>>> >> >> >> >> #define MMC_TIMING_MMC_HS 1 > >>>>> >> >> >> >> +#define MMC_TIMING_MMC_HS200 2 > >>>>> >> >> >> >> #define MMC_TIMING_SD_HS 2 > >>>>> >> >> >> >> #define MMC_TIMING_UHS_SDR12 MMC_TIMING_LEGACY > >>>>> >> >> >> >> #define MMC_TIMING_UHS_SDR25 MMC_TIMING_SD_HS > >>>>> >> >> >> >> @@ -60,6 +61,8 @@ struct mmc_ios { > >>>>> >> >> >> >> #define MMC_SDR_MODE 0 > >>>>> >> >> >> >> #define MMC_1_2V_DDR_MODE 1 > >>>>> >> >> >> >> #define MMC_1_8V_DDR_MODE 2 > >>>>> >> >> >> >> +#define MMC_1_2V_SDR_MODE 3 > >>>>> >> >> >> >> +#define MMC_1_8V_SDR_MODE 4 > >>>>> >> >> >> >> > >>>>> >> >> >> >> unsigned char signal_voltage; /* > signalling > >>>>> >> >> voltage > >>>>> >> >> >> >> (1.8V or 3.3V) */ > >>>>> >> >> >> >> > >>>>> >> >> >> >> @@ -148,7 +151,9 @@ struct mmc_host_ops { > >>>>> >> >> >> >> void (*init_card)(struct mmc_host *host, > struct > >>>>> >> mmc_card > >>>>> >> >> >> *card); > >>>>> >> >> >> >> > >>>>> >> >> >> >> int (*start_signal_voltage_switch)(struct > >>>>> mmc_host > >>>>> >> >> *host, > >>>>> >> >> >> >> struct mmc_ios *ios); > >>>>> >> >> >> >> - int (*execute_tuning)(struct mmc_host > *host); > >>>>> >> >> >> >> + > >>>>> >> >> >> >> + /* The tuning command opcode value is different > for > >>>>> SD > >>>>> >> and > >>>>> >> >> >> eMMC > >>>>> >> >> >> >> cards */ > >>>>> >> >> >> >> + int (*execute_tuning)(struct mmc_host > *host, u32 > >>>>> >> >> opcode); > >>>>> >> >> >> >> void (*enable_preset_value)(struct mmc_host > *host, > >>>>> >> bool > >>>>> >> >> >> enable); > >>>>> >> >> >> >> int (*select_drive_strength)(unsigned int > >>>>> max_dtr, > >>>>> >> int > >>>>> >> >> >> >> host_drv, int card_drv); > >>>>> >> >> >> >> void (*hw_reset)(struct mmc_host *host); > >>>>> >> >> >> >> @@ -242,6 +247,10 @@ struct mmc_host { > >>>>> >> >> >> >> #define MMC_CAP2_CACHE_CTRL (1 << 1) /* > Allow > >>>>> cache > >>>>> >> >> control > >>>>> >> >> >> */ > >>>>> >> >> >> >> #define MMC_CAP2_POWEROFF_NOTIFY (1 << 2) /* > Notify > >>>>> >> poweroff > >>>>> >> >> >> >> supported */ > >>>>> >> >> >> >> #define MMC_CAP2_NO_MULTI_READ (1 << 3) > /* > >>>>> >> >> Multiblock > >>>>> >> >> >> reads > >>>>> >> >> >> >> don't work */ > >>>>> >> >> >> >> +#define MMC_CAP2_HS200_1_8V_SDR (1 << 4) > /* > >>>>> can > >>>>> >> >> support > >>>>> >> >> >> */ > >>>>> >> >> >> >> +#define MMC_CAP2_HS200_1_2V_SDR (1 << 5) > /* > >>>>> can > >>>>> >> >> support > >>>>> >> >> >> */ > >>>>> >> >> >> >> +#define MMC_CAP2_HS200 > >>>>> (MMC_CAP2_HS200_1_8V_SDR > >>>>> >> | > >>>>> >> >> \ > >>>>> >> >> >> >> + > MMC_CAP2_HS200_1_2V_SDR) > >>>>> >> >> >> >> > >>>>> >> >> >> >> mmc_pm_flag_t pm_caps; /* > supported > >>>>> pm > >>>>> >> >> >> features */ > >>>>> >> >> >> >> unsigned int power_notify_type; > >>>>> >> >> >> >> diff --git a/include/linux/mmc/mmc.h > >>>>> b/include/linux/mmc/mmc.h > >>>>> >> >> >> >> index 0e71356..7996272 100644 > >>>>> >> >> >> >> --- a/include/linux/mmc/mmc.h > >>>>> >> >> >> >> +++ b/include/linux/mmc/mmc.h > >>>>> >> >> >> >> @@ -51,6 +51,7 @@ > >>>>> >> >> >> >> #define MMC_READ_SINGLE_BLOCK 17 /* adtc [31:0] > data > >>>>> >> addr > >>>>> >> >> R1 > >>>>> >> >> >> >> */ > >>>>> >> >> >> >> #define MMC_READ_MULTIPLE_BLOCK 18 /* adtc [31:0] > data > >>>>> >> addr > >>>>> >> >> R1 > >>>>> >> >> >> >> */ > >>>>> >> >> >> >> #define MMC_SEND_TUNING_BLOCK 19 /* adtc > >>>>> >> >> R1 > >>>>> >> >> >> >> */ > >>>>> >> >> >> >> +#define MMC_SEND_TUNING_BLOCK_HS200 21 /* adtc > R1 > >>>>> */ > >>>>> >> >> >> >> > >>>>> >> >> >> >> /* class 3 */ > >>>>> >> >> >> >> #define MMC_WRITE_DAT_UNTIL_STOP 20 /* adtc [31:0] > data > >>>>> >> addr > >>>>> >> >> R1 > >>>>> >> >> >> >> */ > >>>>> >> >> >> >> @@ -333,13 +334,76 @@ struct _mmc_csd { > >>>>> >> >> >> >> > >>>>> >> >> >> >> #define EXT_CSD_CARD_TYPE_26 (1<<0) /* Card can run > at > >>>>> 26MHz > >>>>> >> */ > >>>>> >> >> >> >> #define EXT_CSD_CARD_TYPE_52 (1<<1) /* Card can run > at > >>>>> 52MHz > >>>>> >> */ > >>>>> >> >> >> >> -#define EXT_CSD_CARD_TYPE_MASK 0xF /* Mask > out > >>>>> >> >> reserved > >>>>> >> >> >> bits */ > >>>>> >> >> >> >> +#define EXT_CSD_CARD_TYPE_MASK 0x3F /* Mask > out > >>>>> >> >> reserved > >>>>> >> >> >> bits */ > >>>>> >> >> >> >> #define EXT_CSD_CARD_TYPE_DDR_1_8V (1<<2) /* Card > can > >>>>> run > >>>>> >> at > >>>>> >> >> >> 52MHz > >>>>> >> >> >> >> */ > >>>>> >> >> >> >> /* DDR > mode > >>>>> @1.8V > >>>>> >> or > >>>>> >> >> 3V > >>>>> >> >> >> I/O */ > >>>>> >> >> >> >> #define EXT_CSD_CARD_TYPE_DDR_1_2V (1<<3) /* Card > can > >>>>> run > >>>>> >> at > >>>>> >> >> >> 52MHz > >>>>> >> >> >> >> */ > >>>>> >> >> >> >> /* DDR > mode > >>>>> @1.2V > >>>>> >> I/O > >>>>> >> >> */ > >>>>> >> >> >> >> #define EXT_CSD_CARD_TYPE_DDR_52 > >>>>> >> >> (EXT_CSD_CARD_TYPE_DDR_1_8V > >>>>> >> >> >> \ > >>>>> >> >> >> >> | > >>>>> >> >> EXT_CSD_CARD_TYPE_DDR_1_2V) > >>>>> >> >> >> >> +#define EXT_CSD_CARD_TYPE_SDR_1_8V (1<<4) /* Card > can > >>>>> run > >>>>> >> at > >>>>> >> >> >> >> 200MHz */ > >>>>> >> >> >> >> +#define EXT_CSD_CARD_TYPE_SDR_1_2V (1<<5) /* Card > can > >>>>> run > >>>>> >> at > >>>>> >> >> >> >> 200MHz */ > >>>>> >> >> >> >> + /* SDR > mode > >>>>> >> @1.2V > >>>>> >> >> I/O > >>>>> >> >> >> */ > >>>>> >> >> >> >> + > >>>>> >> >> >> >> +#define EXT_CSD_CARD_TYPE_SDR_200 > >>>>> >> (EXT_CSD_CARD_TYPE_SDR_1_8V > >>>>> >> >> >> \ > >>>>> >> >> >> >> + | > >>>>> >> >> EXT_CSD_CARD_TYPE_SDR_1_2V) > >>>>> >> >> >> >> + > >>>>> >> >> >> >> +#define EXT_CSD_CARD_TYPE_SDR_ALL > >>>>> >> (EXT_CSD_CARD_TYPE_SDR_200 > >>>>> >> >> >> \ > >>>>> >> >> >> >> + | > >>>>> EXT_CSD_CARD_TYPE_52 > >>>>> >> >> >> \ > >>>>> >> >> >> >> + | > >>>>> EXT_CSD_CARD_TYPE_26) > >>>>> >> >> >> >> + > >>>>> >> >> >> >> +#define EXT_CSD_CARD_TYPE_SDR_1_2V_ALL > >>>>> >> >> >> >> (EXT_CSD_CARD_TYPE_SDR_1_2V \ > >>>>> >> >> >> >> + | > >>>>> EXT_CSD_CARD_TYPE_52 > >>>>> >> >> >> \ > >>>>> >> >> >> >> + | > >>>>> EXT_CSD_CARD_TYPE_26) > >>>>> >> >> >> >> + > >>>>> >> >> >> >> +#define EXT_CSD_CARD_TYPE_SDR_1_8V_ALL > >>>>> >> >> >> >> (EXT_CSD_CARD_TYPE_SDR_1_8V \ > >>>>> >> >> >> >> + | > >>>>> EXT_CSD_CARD_TYPE_52 > >>>>> >> >> >> \ > >>>>> >> >> >> >> + | > >>>>> EXT_CSD_CARD_TYPE_26) > >>>>> >> >> >> >> + > >>>>> >> >> >> >> +#define EXT_CSD_CARD_TYPE_SDR_1_2V_DDR_1_8V > >>>>> >> >> >> >> (EXT_CSD_CARD_TYPE_SDR_1_2V \ > >>>>> >> >> >> >> + | > >>>>> >> >> >> EXT_CSD_CARD_TYPE_DDR_1_8V > >>>>> >> >> >> > \ > >>>>> >> >> >> >> + | > >>>>> >> >> EXT_CSD_CARD_TYPE_52 > >>>>> >> >> >> > \ > >>>>> >> >> >> >> + | > >>>>> >> >> >> EXT_CSD_CARD_TYPE_26) > >>>>> >> >> >> >> + > >>>>> >> >> >> >> +#define EXT_CSD_CARD_TYPE_SDR_1_8V_DDR_1_8V > >>>>> >> >> >> >> (EXT_CSD_CARD_TYPE_SDR_1_8V \ > >>>>> >> >> >> >> + | > >>>>> >> >> >> EXT_CSD_CARD_TYPE_DDR_1_8V > >>>>> >> >> >> > \ > >>>>> >> >> >> >> + | > >>>>> >> >> EXT_CSD_CARD_TYPE_52 > >>>>> >> >> >> > \ > >>>>> >> >> >> >> + | > >>>>> >> >> >> EXT_CSD_CARD_TYPE_26) > >>>>> >> >> >> >> + > >>>>> >> >> >> >> +#define EXT_CSD_CARD_TYPE_SDR_1_2V_DDR_1_2V > >>>>> >> >> >> >> (EXT_CSD_CARD_TYPE_SDR_1_2V \ > >>>>> >> >> >> >> + | > >>>>> >> >> >> EXT_CSD_CARD_TYPE_DDR_1_2V > >>>>> >> >> >> > \ > >>>>> >> >> >> >> + | > >>>>> >> >> EXT_CSD_CARD_TYPE_52 > >>>>> >> >> >> > \ > >>>>> >> >> >> >> + | > >>>>> >> >> >> EXT_CSD_CARD_TYPE_26) > >>>>> >> >> >> >> + > >>>>> >> >> >> >> +#define EXT_CSD_CARD_TYPE_SDR_1_8V_DDR_1_2V > >>>>> >> >> >> >> (EXT_CSD_CARD_TYPE_SDR_1_8V \ > >>>>> >> >> >> >> + | > >>>>> >> >> >> EXT_CSD_CARD_TYPE_DDR_1_2V > >>>>> >> >> >> > \ > >>>>> >> >> >> >> + | > >>>>> >> >> EXT_CSD_CARD_TYPE_52 > >>>>> >> >> >> > \ > >>>>> >> >> >> >> + | > >>>>> >> >> >> EXT_CSD_CARD_TYPE_26) > >>>>> >> >> >> >> + > >>>>> >> >> >> >> +#define EXT_CSD_CARD_TYPE_SDR_1_2V_DDR_52 > >>>>> >> >> >> >> (EXT_CSD_CARD_TYPE_SDR_1_2V \ > >>>>> >> >> >> >> + | > >>>>> >> >> >> EXT_CSD_CARD_TYPE_DDR_52 > >>>>> >> >> >> > \ > >>>>> >> >> >> >> + | > >>>>> >> >> EXT_CSD_CARD_TYPE_52 > >>>>> >> >> >> > \ > >>>>> >> >> >> >> + | > >>>>> >> >> >> EXT_CSD_CARD_TYPE_26) > >>>>> >> >> >> >> + > >>>>> >> >> >> >> +#define EXT_CSD_CARD_TYPE_SDR_1_8V_DDR_52 > >>>>> >> >> >> >> (EXT_CSD_CARD_TYPE_SDR_1_8V \ > >>>>> >> >> >> >> + | > >>>>> >> >> >> EXT_CSD_CARD_TYPE_DDR_52 > >>>>> >> >> >> > \ > >>>>> >> >> >> >> + | > >>>>> >> >> EXT_CSD_CARD_TYPE_52 > >>>>> >> >> >> > \ > >>>>> >> >> >> >> + | > >>>>> >> >> >> EXT_CSD_CARD_TYPE_26) > >>>>> >> >> >> >> + > >>>>> >> >> >> >> +#define EXT_CSD_CARD_TYPE_SDR_ALL_DDR_1_8V > >>>>> >> >> >> >> (EXT_CSD_CARD_TYPE_SDR_200 \ > >>>>> >> >> >> >> + | > >>>>> >> >> >> EXT_CSD_CARD_TYPE_DDR_1_8V > >>>>> >> >> >> > \ > >>>>> >> >> >> >> + | > >>>>> >> >> EXT_CSD_CARD_TYPE_52 > >>>>> >> >> >> > \ > >>>>> >> >> >> >> + | > >>>>> >> >> >> EXT_CSD_CARD_TYPE_26) > >>>>> >> >> >> >> + > >>>>> >> >> >> >> +#define EXT_CSD_CARD_TYPE_SDR_ALL_DDR_1_2V > >>>>> >> >> >> >> (EXT_CSD_CARD_TYPE_SDR_200 \ > >>>>> >> >> >> >> + | > >>>>> >> >> >> EXT_CSD_CARD_TYPE_DDR_1_2V > >>>>> >> >> >> > \ > >>>>> >> >> >> >> + | > >>>>> >> >> EXT_CSD_CARD_TYPE_52 > >>>>> >> >> >> > \ > >>>>> >> >> >> >> + | > >>>>> >> >> >> EXT_CSD_CARD_TYPE_26) > >>>>> >> >> >> >> + > >>>>> >> >> >> >> +#define EXT_CSD_CARD_TYPE_SDR_ALL_DDR_52 > >>>>> >> >> >> (EXT_CSD_CARD_TYPE_SDR_200 > >>>>> >> >> >> >> \ > >>>>> >> >> >> >> + | > >>>>> >> >> >> EXT_CSD_CARD_TYPE_DDR_52 > >>>>> >> >> >> > \ > >>>>> >> >> >> >> + | > >>>>> >> >> EXT_CSD_CARD_TYPE_52 > >>>>> >> >> >> > \ > >>>>> >> >> >> >> + | > >>>>> >> >> >> EXT_CSD_CARD_TYPE_26) > >>>>> >> >> >> >> > >>>>> >> >> >> >> #define EXT_CSD_BUS_WIDTH_1 0 /* Card is in 1 > bit > >>>>> mode > >>>>> >> */ > >>>>> >> >> >> >> #define EXT_CSD_BUS_WIDTH_4 1 /* Card is in 4 > bit > >>>>> mode > >>>>> >> */ > >>>>> >> >> >> >> diff --git a/include/linux/mmc/sdhci.h > >>>>> >> >> b/include/linux/mmc/sdhci.h > >>>>> >> >> >> >> index e4b6935..d9a2222 100644 > >>>>> >> >> >> >> --- a/include/linux/mmc/sdhci.h > >>>>> >> >> >> >> +++ b/include/linux/mmc/sdhci.h > >>>>> >> >> >> >> @@ -121,6 +121,7 @@ struct sdhci_host { > >>>>> >> >> >> >> #define SDHCI_AUTO_CMD23 (1<<7) /* Auto CMD23 > support > >>>>> */ > >>>>> >> >> >> >> #define SDHCI_PV_ENABLED (1<<8) /* Preset value > >>>>> enabled > >>>>> >> */ > >>>>> >> >> >> >> #define SDHCI_SDIO_IRQ_ENABLED (1<<9) /* SDIO > irq > >>>>> >> enabled > >>>>> >> >> */ > >>>>> >> >> >> >> +#define SDHCI_HS200_NEEDS_TUNING (1<<10) /* > HS200 > >>>>> needs > >>>>> >> >> tuning > >>>>> >> >> >> */ > >>>>> >> >> >> >> > >>>>> >> >> >> >> unsigned int version; /* SDHCI spec. version > */ > >>>>> >> >> >> >> > >>>>> >> >> >> >> -- > >>>>> >> >> >> >> 1.7.1 > >>>>> >> >> >> >> > >>>>> >> >> >> >> -- > >>>>> >> >> >> >> To unsubscribe from this list: send the line > "unsubscribe > >>>>> >> linux- > >>>>> >> >> mmc" > >>>>> >> >> >> in > >>>>> >> >> >> >> the body of a message to majordomo@xxxxxxxxxxxxxxx > >>>>> >> >> >> >> More majordomo info at > http://vger.kernel.org/majordomo- > >>>>> >> >> info.html > >>>>> >> >> >> > > >>>>> >> >> >> > -- > >>>>> >> >> >> > To unsubscribe from this list: send the line > "unsubscribe > >>>>> >> linux- > >>>>> >> >> mmc" > >>>>> >> >> >> in > >>>>> >> >> >> > the body of a message to majordomo@xxxxxxxxxxxxxxx > >>>>> >> >> >> > More majordomo info at > http://vger.kernel.org/majordomo- > >>>>> >> info.html > >>>>> >> >> >> > > >>>>> >> >> >> -- > >>>>> >> >> >> To unsubscribe from this list: send the line > "unsubscribe > >>>>> linux- > >>>>> >> mmc" > >>>>> >> >> in > >>>>> >> >> >> the body of a message to majordomo@xxxxxxxxxxxxxxx > >>>>> >> >> >> More majordomo info at > http://vger.kernel.org/majordomo- > >>>>> >> info.html > >>>>> >> >> > > >>>>> >> >> -- > >>>>> >> >> To unsubscribe from this list: send the line "unsubscribe > linux- > >>>>> mmc" > >>>>> >> in > >>>>> >> >> the body of a message to majordomo@xxxxxxxxxxxxxxx > >>>>> >> >> More majordomo info at http://vger.kernel.org/majordomo- > >>>>> info.html > >>>>> >> > > >>>>> > > >>>> > >>>> -- > >>>> To unsubscribe from this list: send the line "unsubscribe linux- > mmc" in > >>>> the body of a message to majordomo@xxxxxxxxxxxxxxx > >>>> More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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