linux-kernel - Re: [PATCH 1/3] arm64: dts: ti: k3-pinctrl: Define a generic GPIO MUX Mode

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Date: Wed, 19 Jun 2024 10:22:58 +0530
From: Dhruva Gole <d-gole@...com>
To: Nishanth Menon <nm@...com>
CC: Conor Dooley <conor+dt@...nel.org>,
        Krzysztof Kozlowski
	<krzk+dt@...nel.org>,
        Rob Herring <robh@...nel.org>, <linux-kernel@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>,
        Tero Kristo <kristo@...nel.org>, Vignesh Raghavendra <vigneshr@...com>,
        Vaishnav Achath <vaishnav.a@...com>,
        Jared McArthur <j-mcarthur@...com>, Bryan Brattlof <bb@...com>
Subject: Re: [PATCH 1/3] arm64: dts: ti: k3-pinctrl: Define a generic GPIO
 MUX Mode

Hi Nishanth,

On Jun 18, 2024 at 12:31:21 -0500, Nishanth Menon wrote:
> Introduce a GPIO mux mode macro for easier readability. All K3 devices
> use mux mode 7 to switch to GPIO mux.
> 
> Signed-off-by: Nishanth Menon <nm@...com>
> ---
>  arch/arm64/boot/dts/ti/k3-pinctrl.h | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/ti/k3-pinctrl.h b/arch/arm64/boot/dts/ti/k3-pinctrl.h
> index 4cd2df467d0b..b1a0415e6611 100644
> --- a/arch/arm64/boot/dts/ti/k3-pinctrl.h
> +++ b/arch/arm64/boot/dts/ti/k3-pinctrl.h
> @@ -38,6 +38,8 @@
>  #define PIN_DEBOUNCE_CONF5	(5 << DEBOUNCE_SHIFT)
>  #define PIN_DEBOUNCE_CONF6	(6 << DEBOUNCE_SHIFT)
>  
> +#define PIN_GPIO_MUX_MODE	(7)
> +

While I do agree that this is a standard thing, don't you think that
updating it everywhere else (k3 DTs) makes sense? Having the number 7 in some
places and others having PIN_GPIO_MUX_MODE will give rise to confusion I
feel.

-- 
Best regards,
Dhruva Gole <d-gole@...com>