On Sun, 2020-04-05 at 07:18 +0530, Alim Akhtar wrote: Hi Alim > Hi Pawel, > > > -----Original Message----- > > From: Paweł Chmiel <pawel.mikolaj.chmiel@xxxxxxxxx> > > Sent: 05 April 2020 01:56 > > To: Alim Akhtar <alim.akhtar@xxxxxxxxxxx>; robh+dt@xxxxxxxxxx; > > devicetree@xxxxxxxxxxxxxxx; linux-scsi@xxxxxxxxxxxxxxx > > Cc: krzk@xxxxxxxxxx; avri.altman@xxxxxxx; martin.petersen@xxxxxxxxxx; > > kwmad.kim@xxxxxxxxxxx; stanley.chu@xxxxxxxxxxxx; > > cang@xxxxxxxxxxxxxx; linux-samsung-soc@xxxxxxxxxxxxxxx; linux-arm- > > kernel@xxxxxxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx > > Subject: Re: [PATCH v4 5/5] arm64: dts: Add node for ufs exynos7 > > > > On Sat, 2020-04-04 at 21:33 +0200, Paweł Chmiel wrote: > > > On Sat, 2020-04-04 at 23:45 +0530, Alim Akhtar wrote: > > > Hi Alim, > > > > Hi Pawel, > > > > > > > > > -----Original Message----- > > > > > From: Paweł Chmiel <pawel.mikolaj.chmiel@xxxxxxxxx> > > > > > Sent: 03 April 2020 22:22 > > > > > To: Alim Akhtar <alim.akhtar@xxxxxxxxxxx>; robh+dt@xxxxxxxxxx; > > > > > devicetree@xxxxxxxxxxxxxxx; linux-scsi@xxxxxxxxxxxxxxx > > > > > Cc: krzk@xxxxxxxxxx; avri.altman@xxxxxxx; > > > > > martin.petersen@xxxxxxxxxx; kwmad.kim@xxxxxxxxxxx; > > > > > stanley.chu@xxxxxxxxxxxx; cang@xxxxxxxxxxxxxx; > > > > > linux-samsung-soc@xxxxxxxxxxxxxxx; linux-arm- > > > > > kernel@xxxxxxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx > > > > > Subject: Re: [PATCH v4 5/5] arm64: dts: Add node for ufs exynos7 > > > > > > > > > > Hi Alim > > > > > > > > > > Looking at vendor sources, my device is using the same gpios for > > > > > urfs_rst_n and ufs_refclk_out like Espresso (with one difference - > > > > > ufs_rst_n shouldn't be pulled up). > > > > > > > > > > About regulators (it would be easier if dts would have all regulators). > > > > > It's also using s2mps15 as Espresso, but it vendor dts had only 8 > > > > > (of > > > > > 10 possible bucks, one missing was for UFS) and 14 ldos (of 27 > > > > > possible), where almost all rails are connected to something. > > > > > > > > > > I'm wondering how it's working on Espresso, because when adding > > > > > correct regulators for ufs (vccq = buck10 from s2mps15, always > > > > > enabled for testing plus vccq2 and vccq = two regulators enabled > > > > > by one gpio, enabled at boot by firmware), ufs wasn't still > > > > > working because it was then failing at defer probe (s2mps15 was > > > > > probed after ufs) > > > > > > > > > > [ 0.962482] exynos-ufshc 15570000.ufs: ufshcd_get_vreg: vccq get > > > > > failed, err=-517 > > > > > > > > > As I said, this is very specific to the board, on Espresso we have LDO12 > > connected to UFS_RESETn. > > > > Either make all of them as always-on, or just disabled s2mps15 > > > > (default voltage supply should be ok, unless bootloader on your > > > > board does have messed too much with PMIC) > > > > > > > > > After that boot would just stop/hang. > > > > > > > > > > After making a "dirty fix" by making s2mps15 regulator driver use > > > > > subsys_initcall (like in vendor sources) and ufs late_initcall (to > > > > > give it more time to setup and get it working and solve it later), > > > > > i had to mark following clocks as CLK_IGNORE_UNUSED to be able to > > > > > bring link up (it replicates setting done by vendor kernel, which > > > > > enables them on boot): > > > > > - "phyclk_ufs20_rx1_symbol_user" > > > > > - "phyclk_ufs20_rx0_symbol_user" > > > > > - "phyclk_ufs20_tx0_symbol_user" > > > > > > > > > Coming to these clocks, all these are supplied by default, my best > > > > guess is since you are using an actual product (S6 edge), they might have > > optimized for power saving And most likely all clock might be gated initially. In > > my case all are set to default. > > > > I have attached a small change in the exynos7 dts and phy driver clock > > handling, please try this attached patch and let me know if this helps in removing > > some of your hacks. > > > > In the later SoCs these clocks are not in this form, so I didn't included in my > > current patch set, If this works for your, will add as an optional for > > exynos7/7420. > > > > I also assume you are using clk-exynos7.c and my posted ufs driver. > > > Yes, i'm using clk-exynos7 (and other exynos7 drivers/dts/etc). > > > It would be great if someone could say how exynos7 and exynos7420 are > > > similar. For now it looks like that only difference is that exynos7 > > > has only 4 cores (a57) where 7420 has 4xa53 + 4xa57. > > > It would be very valuable information for me so i could know how much > > > i could reuse my device. > > > > > Now it's able to bring both device and link, but it fails at > > > > > ufshcd_uic_change_pwr_mode. > > > > > > > > > Can you please use the exact ufs and ufs-phy device node as in my patch? > > > With Your patch + removed my changes to clocks (removed fix for wrong > > > clock order in dts + removed CLK_IGNORE_UNUSED from symbol clocks in > > > clk-exynos7) it's finally able to detect my UFS device!! > > > > > Wow, great to know that UFS device started working for you on S6. > > > > (but of fails later...with constant error spam in kernel log). > > > > > > [ 1.383481] exynos-ufshc 15570000.ufs: ufshcd_populate_vreg: Unable > > > to find vdd-hba-supply regulator, assuming enabled > > > [ 1.390060] exynos-ufshc 15570000.ufs: ufshcd_populate_vreg: unable > > > to find vcc-max-microamp > > > [ 1.398465] exynos-ufshc 15570000.ufs: ufshcd_populate_vreg: unable > > > to find vccq-max-microamp > > > [ 1.406968] exynos-ufshc 15570000.ufs: ufshcd_populate_vreg: unable > > > to find vccq2-max-microamp > > > [ 1.415569] exynos-ufshc 15570000.ufs: ufshcd_init_clocks: clk: > > > core_clk, rate: 100000000 > > > [ 1.423715] exynos-ufshc 15570000.ufs: ufshcd_init_clocks: clk: > > > sclk_unipro_main, rate: 167000000 > > > [ 1.432569] exynos-ufshc 15570000.ufs: __ufshcd_setup_clocks: clk: > > > core_clk enabled > > > [ 1.440205] exynos-ufshc 15570000.ufs: __ufshcd_setup_clocks: clk: > > > sclk_unipro_main enabled > > > [ 1.449613] scsi host0: ufshcd > > > [ 1.452179] samsung-ufs-phy 15571800.ufs-phy: MPHY ref_clk_rate = > > > 26000000 > > > [ 1.458448] samsung-ufs-phy 15571800.ufs-phy: MPHY > > > ref_parent_clk_rate = 26000000 > > > [ 1.487288] exynos-ufshc 15570000.ufs: ufshcd_print_pwr_info:[RX, > > > TX]: gear=[1, 1], lane[1, 1], pwr[SLOWAUTO_MODE, SLOWAUTO_MODE], > > rate > > > = > > > 0 > > > [ 2.025569] exynos-ufshc 15570000.ufs: dme-set: attr-id 0xd041 val > > > 0x1fff error code 1 > > > [ 2.025715] exynos-ufshc 15570000.ufs: dme-set: attr-id 0xd041 val > > > 0x1fff failed 0 retries > > > [ 2.025880] exynos-ufshc 15570000.ufs: dme-set: attr-id 0xd042 val > > > 0xffff error code 1 > > > [ 2.027354] exynos-ufshc 15570000.ufs: dme-set: attr-id 0xd042 val > > > 0xffff failed 0 retries > > > [ 2.035583] exynos-ufshc 15570000.ufs: dme-set: attr-id 0xd043 val > > > 0x7fff error code 1 > > > [ 2.043465] exynos-ufshc 15570000.ufs: dme-set: attr-id 0xd043 val > > > 0x7fff failed 0 retries > > > [ 2.054049] exynos-ufshc 15570000.ufs: Power mode change 0 : Fast > > > series_B G_2 L_2 > > > [ 2.059261] exynos-ufshc 15570000.ufs: ufshcd_print_pwr_info:[RX, > > > TX]: gear=[2, 2], lane[2, 2], pwr[FAST MODE, FAST MODE], rate = 2 > > > [ 2.071307] exynos-ufshc 15570000.ufs: ufshcd_init_icc_levels: > > > setting icc_level 0x0 > > > [ 2.081624] exynos-ufshc 15570000.ufs: ufshcd_set_queue_depth: > > > activate tcq with queue depth 1 > > > [ 2.087576] scsi 0:0:0:49488: scsi_add_lun: correcting incorrect > > > peripheral device type 0x0 for W-LUN 0x c150hN > > > [ 2.098400] scsi 0:0:0:49488: Well-known LUN SAMSUNG KLUBG4G1BD- > > > E0B1 0200 PQ: 0 ANSI: 6 > > > [ 2.107585] exynos-ufshc 15570000.ufs: ufshcd_set_queue_depth: > > > activate tcq with queue depth 16 > > > [ 2.115588] scsi 0:0:0:49476: scsi_add_lun: correcting incorrect > > > peripheral device type 0x0 for W-LUN 0x c144hN > > > [ 2.126519] scsi 0:0:0:49476: Well-known LUN SAMSUNG KLUBG4G1BD- > > > E0B1 0200 PQ: 0 ANSI: 6 > > > [ 2.135534] exynos-ufshc 15570000.ufs: ufshcd_set_queue_depth: > > > activate tcq with queue depth 1 > > > [ 2.143612] scsi 0:0:0:49456: scsi_add_lun: correcting incorrect > > > peripheral device type 0x0 for W-LUN 0x c130hN > > > [ 2.154543] scsi 0:0:0:49456: Well-known LUN SAMSUNG KLUBG4G1BD- > > > E0B1 0200 PQ: 0 ANSI: 6 > > > [ 2.163597] exynos-ufshc 15570000.ufs: ufshcd_set_queue_depth: > > > activate tcq with queue depth 16 > > > [ 2.171721] scsi 0:0:0:0: Direct-Access SAMSUNG KLUBG4G1BD- > > > E0B1 0200 PQ: 0 ANSI: 6 > > > [ 2.180352] exynos-ufshc 15570000.ufs: OCS error from controller = 7 > > > for tag 0 > > > [ 2.186921] host_regs: 00000000: 0383ff0f 00000000 00000200 00000000 > > > [ 2.193230] host_regs: 00000010: 00000101 00007fce 00000c96 00000000 > > > [ 2.199565] host_regs: 00000020: 00000000 00030e75 00000000 00000000 > > > [ 2.205899] host_regs: 00000030: 0000010f 00000000 80000010 00000000 > > > [ 2.212234] host_regs: 00000040: 00000000 00000000 00000000 00000000 > > > [ 2.218568] host_regs: 00000050: f8d64000 00000000 00000000 00000000 > > > [ 2.224903] host_regs: 00000060: 00000001 00000000 00000000 00000000 > > > [ 2.231237] host_regs: 00000070: f8da2000 00000000 00000000 00000000 > > > [ 2.237572] host_regs: 00000080: 00000001 00000000 00000000 00000000 > > > [ 2.243907] host_regs: 00000090: 00000002 95190000 00000000 00000000 > > > [ 2.250242] exynos-ufshc 15570000.ufs: hba->ufs_version = 0x200, > > > hba->capabilities = 0x383ff0f > > > > > > Full bootlog > > > https://protect2.fireeye.com/url?k=edbae146-b069b8f8-edbb6a09-0cc47a31 > > > ba82- > > 8b13b1e4caed34d7&q=1&u=https%3A%2F%2Fgist.github.com%2FPabloPL%2F > > > 0bcb24492f4ab6e9703c2a4ea20ceb18 kernel source: > > > https://protect2.fireeye.com/url?k=75038dec-28d0d452-750206a3-0cc47a31 > > > ba82- > > 4c366bec6fc01e64&q=1&u=https%3A%2F%2Fgithub.com%2FPabloPL%2Flinux > > > %2Ftree%2Fufs-mainline dts file: exynos7-zeroflt.dts (it should be > > > zerolt, but will be fixed/changed later). > > > > Actually, after waiting enough time (about 15 or even more sec of that error > > "spam"), was able to mount partitions and manipulate files there. > > > You need below patch and a change in the ufs driver: > https://www.spinics.net/lists/linux-scsi/msg138501.html > > And > > diff --git a/drivers/scsi/ufs/ufs-exynos.c b/drivers/scsi/ufs/ufs-exynos.c > index ce2c3d674e4b..c6332deff03a 100644 > --- a/drivers/scsi/ufs/ufs-exynos.c > +++ b/drivers/scsi/ufs/ufs-exynos.c > @@ -1359,7 +1359,8 @@ struct exynos_ufs_drv_data exynos_ufs_drvs = { > .quirks = UFSHCD_QUIRK_PRDT_BYTE_GRAN | > UFSHCI_QUIRK_BROKEN_REQ_LIST_CLR | > UFSHCI_QUIRK_BROKEN_HCE | > - UFSHCI_QUIRK_SKIP_RESET_INTR_AGGR, > + UFSHCI_QUIRK_SKIP_RESET_INTR_AGGR | > + UFSHCD_QUIRK_BROKEN_OCS_FATAL_ERROR, > .opts = EXYNOS_UFS_OPT_HAS_APB_CLK_CTRL | > EXYNOS_UFS_OPT_BROKEN_AUTO_CLK_CTRL | > EXYNOS_UFS_OPT_BROKEN_RX_SEL_IDX, > > > So for me the only issue to solve are defered probe when regulators are not yet > > found (for example when pmic is probed after ufs) and not sure what about that > > errors (despite working ufs). > > > The error will go away with the above changes, about regulators, you need to figure it out, as I am not aware of Galaxy S6 PMIC schemes. > I also seek your Tested-by tag on these patches . Checked with those two patches applied, error is gone. You can add my Tested-by: Paweł Chmiel <pawel.mikolaj.chmiel@xxxxxxxxx> to all patches. Thanks > > > Thanks for all > > Thanks for helping in testing. > > > Thanks > >
