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
 |