[PATCH] pinctrl: meson: amlogic-a4: fix gpio output glitch

[Xianwei Zhao]

Hi Linus,
    Thanks for your review.

On 2026/5/25 16:34, Linus Walleij wrote:
> On Mon, May 18, 2026 at 10:26 AM Xianwei Zhao via B4 Relay
> <devnull+xianwei.zhao.amlogic.com at kernel.org>  wrote:
> 
>> From: Xianwei Zhao<xianwei.zhao at amlogic.com>
>>
>> When the system transitions from bootloader to kernel, the GPIO is
>> expected to keep driving high.
>>
>> However, the Linux kernel first configures the pin direction and then
>> sets the output value. This may cause a brief low-level glitch on the
>> GPIO line, which can be problematic for regulator control.
>>
>> By configuring the output value before switching the pin direction to
>> output, the glitch can be avoided.
>>
>> This commit fixes the issue by swapping the configuration order.
>>
>> Fixes: 6e9be3abb78c ("pinctrl: Add driver support for Amlogic SoCs")
>> Signed-off-by: Xianwei Zhao<xianwei.zhao at amlogic.com>
> Is this a regression? I.e. does it cause problems on a supported
> system with mainline?
> 
> Linus (the big penguin) is unhappy with too many non-critical fixes
> so I wanna check this before this goes into fixes.
> 

The issue only occurs when the critical power supply uses GPIO control. 
Otherwise, it is not significant.

> Yours,
> Linus Walleij