linux-kernel - Re: [PATCH] ARM: dts: stm32: fix stusb1600 pinctrl used on stm32mp157c-dk

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Date:   Mon, 29 Nov 2021 14:13:14 +0100
From:   Alexandre TORGUE <alexandre.torgue@...s.st.com>
To:     Fabrice Gasnier <fabrice.gasnier@...s.st.com>
CC:     <robh+dt@...nel.org>, <amelie.delaunay@...s.st.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <fabien.dessenne@...s.st.com>
Subject: Re: [PATCH] ARM: dts: stm32: fix stusb1600 pinctrl used on
 stm32mp157c-dk

Hi Fabrice

On 11/26/21 12:33 PM, Fabrice Gasnier wrote:
> A pinctrl handle is used to setup a pull-up on the stusb1600 IRQ pin (that
> is open drain).
> When in ANALOG state, no pull-up can be applied in the GPIO HW controller,
> still the setting is done into the register. The pull-up is effective
> currently, only when the GPIO IRQ is requested. The correct setting is to
> use directly the GPIO, instead of ANALOG state.
> 
> Signed-off-by: Fabrice Gasnier <fabrice.gasnier@...s.st.com>
> ---
>   arch/arm/boot/dts/stm32mp15-pinctrl.dtsi | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/arm/boot/dts/stm32mp15-pinctrl.dtsi b/arch/arm/boot/dts/stm32mp15-pinctrl.dtsi
> index 5f060fe..3b65130 100644
> --- a/arch/arm/boot/dts/stm32mp15-pinctrl.dtsi
> +++ b/arch/arm/boot/dts/stm32mp15-pinctrl.dtsi
> @@ -1718,7 +1718,7 @@
>   
>   	stusb1600_pins_a: stusb1600-0 {
>   		pins {
> -			pinmux = <STM32_PINMUX('I', 11, ANALOG)>;
> +			pinmux = <STM32_PINMUX('I', 11, GPIO)>;
>   			bias-pull-up;
>   		};
>   	};
> 

Applied on stm32-next

Regards
Alex