linux-kernel - Re: [PATCH v2] gpio: ep93xx: split device in multiple

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Message-ID: <20230201122628.2e4e1788@redslave.neermore.group>
Date:   Wed, 1 Feb 2023 12:26:28 +0300
From:   Nikita Shubin <nikita.shubin@...uefel.me>
To:     Alexander Sverdlin <alexander.sverdlin@...il.com>
Cc:     Bartosz Golaszewski <brgl@...ev.pl>,
        Linus Walleij <linus.walleij@...aro.org>,
        Hartley Sweeten <hsweeten@...ionengravers.com>,
        Russell King <linux@...linux.org.uk>,
        Lukasz Majewski <lukma@...x.de>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-gpio@...r.kernel.org
Subject: Re: [PATCH v2] gpio: ep93xx: split device in multiple

On Wed, 01 Feb 2023 10:18:47 +0100
Alexander Sverdlin <alexander.sverdlin@...il.com> wrote:

> Hello Nikita,
> 
> On Wed, 2023-02-01 at 12:10 +0300, Nikita Shubin wrote:
> > This prepares ep93xx SOC gpio to convert into device tree driver:
> > - dropped banks and legacy defines
> > - split AB IRQ and make it shared
> > 
> > We are relying on IRQ number information A, B ports have single
> > shared IRQ, while F port have dedicated IRQ for each line.
> > 
> > Also we had to split single ep93xx platform_device into multiple,
> > one for each port, without this we can't do a full working
> > transition from legacy platform code into device tree capable. All
> > GPIO_LOOKUP were change to match new chip namings.
> > 
> > Signed-off-by: Nikita Shubin <nikita.shubin@...uefel.me>
> > Reviewed-by: Linus Walleij <linus.walleij@...aro.org>
> > ---
> > Bart, i've rebased on the top of gpio/for-next (there were issues
> > indeed), but this patch still won't apply. That's becouse it's
> > dependant on Linus patch:
> > https://lore.kernel.org/linux-arm-kernel/20230111132210.134478-1-linus.walleij@linaro.org/T/
> > 
> > Alexander can we have Linus patch somehow applied to ep93xx ?   
> 
> in contrast to me Linus and Bartosz do maintain their GPIO tree,
> from my side I've performed a quick test, so it's OK from my PoV to
> apply, but I cannot really assist here more.
> 

Oh sorry about that, i thought if it refers to
"arch/arm/mach-ep93xx/core.c" - you or Hartley should apply them.

> Linus and Bartosz do maintain their GPIO tree

Then it should already exist in gpio/for-next ;).

```
echo heartbeat > /sys/class/leds/platform\:grled/trigger
echo heartbeat > /sys/class/leds/platform\:rdled/trigger
```

Both working on my ts7250.