回覆: [x86-power-control]: press the power button for a long time that can't force turn off system power

[Chris Chen (TPI)]

Hi Andrew,

Thanks for your hint (CONFIG_DEBUG_PINCTRL=y) that let me see where the passthrough setting was disabled.
======
[   11.631044] aspeed-g6-pinctrl 1e6e2000.syscon:pinctrl: request pin 120 (AB22) for 1e780000.gpio:120
[   11.631064] Muxing pin 120 for GPIO
[   11.631071] Disabling signal PWM8 for PWM8
[   11.631087] Want SCU41C[0x01000000]=0x1, got 0x0 from 0x000000C0
[   11.631094] Disabling signal THRUIN0 for THRU0
[   11.631102] Want SCU4BC[0x01000000]=0x1, got 0x1 from 0x0F000000
[   11.631118] Want SCU4BC[0x01000000]=0x0, got 0x0 from 0x0E000000
[   11.631124] Enabling signal GPIOP0 for GPIOP0
======

But something strange is the logs seems from "x86-power-control" package because it would not appear after I commented out partial code as below in the package.
Could you or others tell me why, please? I mean did I miss any configurations or code changes or anything when using the "x86-power-control" package?

#if 0 //Added by Chris for testing
    // Request POWER_BUTTON GPIO events
    if (!powerButtonName.empty())
    {
        if (!requestGPIOEvents(powerButtonName, powerButtonHandler,
                               powerButtonLine, powerButtonEvent))
        {
            return -1;
        }
    }
    else
    {
        phosphor::logging::log<phosphor::logging::level::ERR>(
            "powerButton name should be configured from json config file");
        return -1;
    }
#endif //Added by Chris for testing

Another, last time I forgot to say that I have tried to use "devmem 0x1e6e24BC 32 0x0F000000" to set passthrough back manually and the power button works fine. This is why I think the passthrough was gone after the system booting up.

Regards,
Chris Chen


________________________________
寄件者: Andrew Jeffery <andrew at aj.id.au>
寄件日期: 2021年8月16日 下午 02:30
收件者: Chris Chen (TPI) <Chris.Chen3 at flex.com>; Bills, Jason M <jason.m.bills at linux.intel.com>; openbmc at lists.ozlabs.org <openbmc at lists.ozlabs.org>
主旨: Re: [x86-power-control]: press the power button for a long time that can't force turn off system power

Hi Chris,

On Mon, 16 Aug 2021, at 13:22, Chris Chen (TPI) wrote:
> Hi Jason and others,
>
> I think I figured out the problem is the GPIOP0 and GPIOP1 passthrough
> was not set after system booting up. However, as I mentioned when
> rising the question, I have already set GPIOP0 and P1 passthrough in
> u-boot, it for now looks like was been turned off during Kernel or
> OpenBMC application running up. Can you please give me a clue why the
> GPIO passthrough would be turned off or where should I need to add
> passthrough setting again?
>

If the kernel is disabling it you might be able to find the cause with
CONFIG_DEBUG_PINCTRL=y and the pinctrl attributes in debugfs. Having
said that, the upstream kernel hasn't been taught about SCU510[28] on
the 2600, so if it is touching it then it's doing so via out-of-tree
patches.

Andrew

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