linux-kernel - Re: [PATCH v4 1/4] gpio: vf610: allow disabling the vf610 driver

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Date: Fri, 26 Jan 2024 13:27:19 +0100
From: Francesco Dolcini <francesco@...cini.it>
To: Martin Kaiser <martin@...ser.cx>
Cc: Shawn Guo <shawnguo@...nel.org>,
	Linus Walleij <linus.walleij@...aro.org>,
	Bartosz Golaszewski <brgl@...ev.pl>, Peng Fan <peng.fan@....com>,
	Andrew Lunn <andrew@...n.ch>, linux-gpio@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 1/4] gpio: vf610: allow disabling the vf610 driver

On Wed, Jan 24, 2024 at 09:58:57PM +0100, Martin Kaiser wrote:
> The vf610 gpio driver is enabled by default for all i.MX machines,
> without any option to disable it in a board-specific config file.
> 
> Most i.MX chipsets have no hardware for this driver. Change the default
> to enable GPIO_VF610 for SOC_VF610 and disable it otherwise.
> 
> Add a text description after the bool type, this makes the driver
> selectable by make config etc.
> 
> Fixes: 30a35c07d9e9 ("gpio: vf610: drop the SOC_VF610 dependency for GPIO_VF610")
> Signed-off-by: Martin Kaiser <martin@...ser.cx>
> ---
> v4:
>  - add a new patch to enable COMPILE_TEST
> 
> v3:
>  - split the changes into three patches
> 
> v2:
>  - enable the vf610 gpio driver in the defconfig files for arm_v7
>    (i.MX7ULP) and arm64 (i.MX8QM, DXL, ULP and i.MX93)
> 
>  drivers/gpio/Kconfig | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
> index 1301cec94f12..353af1a4d0ac 100644
> --- a/drivers/gpio/Kconfig
> +++ b/drivers/gpio/Kconfig
> @@ -711,7 +711,8 @@ config GPIO_UNIPHIER
>  	  Say yes here to support UniPhier GPIOs.
>  
>  config GPIO_VF610
> -	def_bool y
> +	bool "VF610 GPIO support"
> +	default y if SOC_VF610

any reason for having this default y for SOC_VF610, but not for the
other SOC that uses the same variant (i.MX7ULP, ... ?).

Francesco