linux-kernel - Re: [PATCH v1 0/5] pinctrl: intel: High impedance impl. and cleanups

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Message-ID: <974bbb25-3b27-4f53-be35-4bfda17b8c7e@gmail.com>
Date: Fri, 30 Aug 2024 07:56:11 +0200
From: Heiner Kallweit <hkallweit1@...il.com>
To: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
 linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org
Cc: Mika Westerberg <mika.westerberg@...ux.intel.com>,
 Linus Walleij <linus.walleij@...aro.org>
Subject: Re: [PATCH v1 0/5] pinctrl: intel: High impedance impl. and cleanups

On 28.08.2024 22:00, Andy Shevchenko wrote:
> +Cc: Heiner
> 
> On Wed, Aug 28, 2024 at 09:38:33PM +0300, Andy Shevchenko wrote:
>> We would need a high impedance implementation for a quirk, so here it
>> is. While doing this series I also noticed a couple of opportunities
>> to clean up, hence two more patches (1st and 5th).
> 
> Sorry it took a while to actually start implementing the quirk for your case.
> Here I'm asking for the following things:
> 
> 1) what is the marketing name of the device you have problems with?
> (I believe it's available on the free market, correct?);
> 

Device is a dirt-cheap mini pc, marketed as Chatreey T9. It's available
on the free market, right. Dmesg says:
DMI: Default string Default string/Default string, BIOS ADLN.M6.SODIMM.ZB.CY.015 08/08/2023

> 2) does it have any BIOS updates and, if it has, does it fix the issue?
> 
No BIOS updates.

> 3) can you apply patches 2,3,4,5 from this series (the first one is buggy and
> not needed for you) and replace the hack I mentioned earlier with
> 
> 	ret = intel_gpio_set_high_impedance(pctrl, 3);
> 	if (ret)
> 		return ret;
> 
> somewhere at the end of intel_pinctrl_probe()?
> 
> Does it still work as expected?
> 
> 
I will check.