Hello, On 11/5/20 3:57 AM, Michał Mirosław wrote: >>> 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 > [...] > > Can you try with the patches I just sent and with debug logs enabled? > > The first one just plugs a memory leak, but if there is some state > changed/saved in the rdev->constraints (can't find that code, though), > this might prevent it from being overwritten. > > The second patch will just tell us if you hit the early resolve case.
Problem still persists. Early resolve case not hit: [ 1.231096] i2c /dev entries driver [ 1.258111] stm32f7-i2c 40015000.i2c: STM32F7 I2C-0 bus adapter [ 1.258348] edt_ft5x06 0-0038: Looking up vcc-supply from device tree [ 1.287207] stpmic1 1-0033: PMIC Chip Version: 0x10 [ 1.295810] vddcore: 1200 <--> 1350 mV at 1200 mV, enabled [ 1.300108] stpmic1-regulator 5c002000.i2c:stpmic@33:regulators: Looking up buck1-supply from device tree [ 1.309747] stpmic1-regulator 5c002000.i2c:stpmic@33:regulators: Looking up buck1-supply property in node /soc/i2c@5c002000/stpmic@33/regulators failed [ 1.323526] vddcore: supplied by regulator-dummy [ 1.334951] vdd_ddr: 1350 mV, enabled [ 1.337356] stpmic1-regulator 5c002000.i2c:stpmic@33:regulators: Looking up buck2-supply from device tree [ 1.347016] stpmic1-regulator 5c002000.i2c:stpmic@33:regulators: Looking up buck2-supply property in node /soc/i2c@5c002000/stpmic@33/regulators failed [ 1.360805] vdd_ddr: supplied by regulator-dummy [ 1.372166] vdd: 3300 mV, enabled [ 1.374211] stpmic1-regulator 5c002000.i2c:stpmic@33:regulators: Looking up buck3-supply from device tree [ 1.383863] stpmic1-regulator 5c002000.i2c:stpmic@33:regulators: Looking up buck3-supply property in node /soc/i2c@5c002000/stpmic@33/regulators failed [ 1.397656] vdd: supplied by regulator-dummy [ 1.408473] v3v3: 3300 mV, enabled [ 1.410597] stpmic1-regulator 5c002000.i2c:stpmic@33:regulators: Looking up buck4-supply from device tree [ 1.420244] v3v3: supplied by 5V2 [ 1.428843] v1v8_audio: 1800 mV, enabled [ 1.431502] stpmic1-regulator 5c002000.i2c:stpmic@33:regulators: Looking up ldo1-supply from device tree [ 1.441049] v1v8_audio: supplied by v3v3 [ 1.451744] v3v3_hdmi: 3300 mV, enabled [ 1.454310] stpmic1-regulator 5c002000.i2c:stpmic@33:regulators: Looking up ldo2-supply from device tree [ 1.463864] v3v3_hdmi: supplied by 5V2 [ 1.471367] vtt_ddr: override max_uV, 750000 -> 500000 [ 1.478650] vtt_ddr: 500 mV, enabled [ 1.480958] stpmic1-regulator 5c002000.i2c:stpmic@33:regulators: Looking up ldo3-supply from device tree [ 1.490526] stpmic1-regulator 5c002000.i2c:stpmic@33:regulators: Looking up ldo3-supply property in node /soc/i2c@5c002000/stpmic@33/regulators failed [ 1.504227] vtt_ddr: supplied by regulator-dummy [ 1.513158] vdd_usb: 3300 mV, enabled [ 1.516875] stpmic1-regulator 5c002000.i2c:stpmic@33:regulators: Looking up ldo4-supply from device tree [ 1.526410] stpmic1-regulator 5c002000.i2c:stpmic@33:regulators: Looking up ldo4-supply property in node /soc/i2c@5c002000/stpmic@33/regulators failed [ 1.540133] vdd_usb: supplied by regulator-dummy [ 1.551741] vdda: 2900 mV, enabled [ 1.553864] stpmic1-regulator 5c002000.i2c:stpmic@33:regulators: Looking up ldo5-supply from device tree [ 1.563415] vdda: supplied by 5V2 [ 1.572357] v1v2_hdmi: 1200 mV, enabled [ 1.574970] stpmic1-regulator 5c002000.i2c:stpmic@33:regulators: Looking up ldo6-supply from device tree [ 1.584441] v1v2_hdmi: supplied by v3v3 [ 1.594492] vref_ddr: at 500 mV, enabled [ 1.597047] edt_ft5x06 0-0038: touchscreen probe failed [ 1.597211] stpmic1-regulator 5c002000.i2c:stpmic@33:regulators: Looking up vref_ddr-supply from device tree [ 1.612406] stpmic1-regulator 5c002000.i2c:stpmic@33:regulators: Looking up vref_ddr-supply property in node /soc/i2c@5c002000/stpmic@33/regulators failed [ snip - continues many times ] [ 6.699244] stpmic1-regulator 5c002000.i2c:stpmic@33:regulators: Looking up vref_ddr-supply property in node /soc/i2c@5c002000/stpmic@33/regulators failed [ 6.713312] stpmic1-regulator 5c002000.i2c:stpmic@33:regulators: Looking up vref_ddr-supply from device tree [ 6.723328] Kernel panic - not syncing: corrupted stack end detected inside scheduler [ 6.731288] CPU1: stopping [ 6.734028] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.10.0-rc2-00007-gd12735e25a7c-dirty #135 [ 6.742882] Hardware name: STM32 (Device Tree Support) [ 6.748147] [<c010c05c>] (unwind_backtrace) from [<c0109ad0>] (show_stack+0x10/0x14) [ 6.756014] [<c0109ad0>] (show_stack) from [<c0727938>] (dump_stack+0x94/0xa8) [ 6.763368] [<c0727938>] (dump_stack) from [<c010a9b0>] (do_handle_IPI+0xf4/0x11c) [ 6.771075] [<c010a9b0>] (do_handle_IPI) from [<c010a9f0>] (ipi_handler+0x18/0x20) [ 6.778791] [<c010a9f0>] (ipi_handler) from [<c016bf7c>] (__handle_domain_irq+0x80/0xd4) [ 6.787034] [<c016bf7c>] (__handle_domain_irq) from [<c0421640>] (gic_handle_irq+0x70/0x84) [ 6.795540] [<c0421640>] (gic_handle_irq) from [<c0100b0c>] (__irq_svc+0x6c/0xa8) [ 6.803153] Exception stack(0xc1087f58 to 0xc1087fa0) [ 6.808295] 7f40: 00000000 00000a68 [ 6.816631] 7f60: deb3db84 c01156a0 c1086000 00000001 c0b04ed0 c0b04f10 00000000 c0a425b0 [ 6.824964] 7f80: 00000000 c1087fb0 c0b04f88 c1087fa8 c0107020 c0107024 60000013 ffffffff [ 6.833303] [<c0100b0c>] (__irq_svc) from [<c0107024>] (arch_cpu_idle+0x38/0x3c) [ 6.840835] [<c0107024>] (arch_cpu_idle) from [<c014a3b4>] (do_idle+0x218/0x270) [ 6.848368] [<c014a3b4>] (do_idle) from [<c014a6e0>] (cpu_startup_entry+0x18/0x20) [ 6.856079] [<c014a6e0>] (cpu_startup_entry) from [<c010156c>] (__enableNOTICE: CPU: STM32MP157C?? Rev. > > Best Regards, > Michał Mirosław > -- Pengutronix e.K. | | Steuerwalder Str. 21 | http://www.pengutronix.de/ | 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |