linux-kernel - Re: [PATCH v1] arm64: dts: qcom: sdm845-db845c: Fix reset-pin of ov8856 node

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Message-ID: <X+Acbf5Ks7R+M6ZW@ripper>
Date:   Sun, 20 Dec 2020 19:54:21 -0800
From:   Bjorn Andersson <bjorn.andersson@...aro.org>
To:     Robert Foss <robert.foss@...aro.org>
Cc:     agross@...nel.org, robh+dt@...nel.org,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1] arm64: dts: qcom: sdm845-db845c: Fix reset-pin of
 ov8856 node

On Thu 17 Dec 07:12 PST 2020, Robert Foss wrote:

> Switch reset pin of ov8856 node from GPIO_ACTIVE_HIGH to GPIO_ACTIVE_LOW,
> this issue prevented the ov8856 from probing properly as it does not respond
> to I2C messages.
> 
> Fixes: d4919a44564b ("arm64: dts: qcom: sdm845-db845c: Add ov8856 & ov7251
> camera nodes")
> 
> Signed-off-by: Robert Foss <robert.foss@...aro.org>
> ---
>  arch/arm64/boot/dts/qcom/sdm845-db845c.dts | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sdm845-db845c.dts b/arch/arm64/boot/dts/qcom/sdm845-db845c.dts
> index 7cc236575ee2..a943b3f353ce 100644
> --- a/arch/arm64/boot/dts/qcom/sdm845-db845c.dts
> +++ b/arch/arm64/boot/dts/qcom/sdm845-db845c.dts
> @@ -1112,11 +1112,11 @@ camera@10 {
>  		reg = <0x10>;
>  
>  		// CAM0_RST_N
> -		reset-gpios = <&tlmm 9 0>;
> +		reset-gpios = <&tlmm 9 1>;

Please do use GPIO_ACTIVE_LOW as the argument...

Regards,
Bjorn

>  		pinctrl-names = "default";
>  		pinctrl-0 = <&cam0_default>;
>  		gpios = <&tlmm 13 0>,
> -			<&tlmm 9 0>;
> +			<&tlmm 9 1>;
>  
>  		clocks = <&clock_camcc CAM_CC_MCLK0_CLK>;
>  		clock-names = "xvclk";
> -- 
> 2.27.0
>