Messages in this thread | | | Subject | Re: [Linux-stm32] [BUG] Error applying setting, reverse things back on lot of devices | From | Alexandre Torgue <> | Date | Wed, 4 Nov 2020 11:50:09 +0100 |
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Hi Ahmad
On 11/4/20 11:28 AM, Ahmad Fatoum wrote: > Hello, > > On 11/2/20 9:27 PM, Michał Mirosław wrote: >> On Mon, Nov 02, 2020 at 01:48:54PM +0100, Ahmad Fatoum wrote: >>> Hello Michał, >>> >>> CC += linux-stm32 >>> >>> On 10/24/20 1:53 PM, Michał Mirosław wrote: >>>> On Fri, Oct 23, 2020 at 10:39:43PM +0200, Corentin Labbe wrote: >>>>> On Fri, Oct 23, 2020 at 03:42:01PM +0200, Corentin Labbe wrote: >>>>>> On Wed, Oct 21, 2020 at 08:31:49PM +0200, Corentin Labbe wrote: >>>>>> I have just saw thoses 3 lines which are probably the real problem. >>>>>> I have started a new bisect with this error, but it is hitting the same "crash range" the first one. >>>>>> >>>>> >>>>> I have bisected the problem to commit aea6cb99703e17019e025aa71643b4d3e0a24413 ("regulator: resolve supply after creating regulator") >>>>> Reverting this fix my problem. >>> >>> The change broke boot on all the STM32MP1 boards, because the STPMIC driver >>> has a vref_ddr regulator, which does not have a dedicated supply, but without >>> a vref_ddr-supply property the system now no longer boots. >> [...] >> >> Can you catch debug logs for the bootup in question? I'm not sure what's >> the failure mode in your case. I guess this is not a bypassed regulator? > > Boot up with v5.10-rc2 + your cf1ad559a2 ("regulator: defer probe when trying > to get voltage from unresolved supply") hangs: > > [ 1.151489] stm32f7-i2c 40015000.i2c: STM32F7 I2C-0 bus adapter > [ 1.180698] stpmic1 1-0033: PMIC Chip Version: 0x10 > [ 1.189526] vddcore: supplied by regulator-dummy > [ 1.195633] vdd_ddr: supplied by regulator-dummy > [ 1.201672] vdd: supplied by regulator-dummy > [ 1.207452] v3v3: supplied by 5V2 > [ 1.211997] v1v8_audio: supplied by v3v3 > [ 1.218036] v3v3_hdmi: supplied by 5V2 > [ 1.223626] vtt_ddr: supplied by regulator-dummy > [ 1.227107] vdd_usb: supplied by regulator-dummy > [ 1.234532] vdda: supplied by 5V2 > [ 1.239497] v1v2_hdmi: supplied by v3v3 > > Boot up with v5.10-rc2 with aea6cb99 ("regulator: resolve supply after > creating regulator") reverted boots correctly: > > [ 1.151458] stm32f7-i2c 40015000.i2c: STM32F7 I2C-0 bus adapter > [ 1.180668] stpmic1 1-0033: PMIC Chip Version: 0x10 > [ 1.186629] BUCK1: supplied by regulator-dummy > [ 1.192628] BUCK2: supplied by regulator-dummy > [ 1.198667] BUCK3: supplied by regulator-dummy > [ 1.204623] BUCK4: supplied by 5V2 > [ 1.209424] LDO1: supplied by v3v3 > [ 1.214931] LDO2: supplied by 5V2 > [ 1.219897] LDO3: supplied by regulator-dummy > [ 1.225784] LDO4: supplied by regulator-dummy > [ 1.229239] LDO5: supplied by 5V2 > [ 1.235097] LDO6: supplied by v3v3 > [ 1.240164] VREF_DDR: supplied by regulator-dummy > [ 1.246130] BOOST: supplied by 5V2 > [ 1.248617] VBUS_OTG: supplied by bst_out > [ 1.252698] SW_OUT: supplied by bst_out > > Boot up with v5.10-rc2 + your cf1ad559a2 + &pmic { regulators { vref_ddr-supply = <®_5v2>; }
Just to know, Did you test v5.10-rc2 + vref_ddr-supply = <®_5v2>; ? (which seems to correspond to the patch I sent for DK/EV STM32 boards)
> boots correctly as well: > > [ 1.151531] stm32f7-i2c 40015000.i2c: STM32F7 I2C-0 bus adapter > [ 1.180759] stpmic1 1-0033: PMIC Chip Version: 0x10 > [ 1.189543] vddcore: supplied by regulator-dummy > [ 1.195651] vdd_ddr: supplied by regulator-dummy > [ 1.201687] vdd: supplied by regulator-dummy > [ 1.207470] v3v3: supplied by 5V2 > [ 1.212015] v1v8_audio: supplied by v3v3 > [ 1.218053] v3v3_hdmi: supplied by 5V2 > [ 1.223647] vtt_ddr: supplied by regulator-dummy > [ 1.227128] vdd_usb: supplied by regulator-dummy > [ 1.234553] vdda: supplied by 5V2 > [ 1.239510] v1v2_hdmi: supplied by v3v3 > [ 1.244932] vref_ddr: supplied by 5V2 > [ 1.247397] bst_out: supplied by 5V2 > [ 1.251338] vbus_otg: supplied by bst_out > [ 1.255416] vbus_sw: supplied by bst_out > > > Cheers > Ahmad > >> >> Best Regards, >> Michał Mirosław >> >> >
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