linux-kernel - Re: [PATCH] arm64: dts: qcom: qcs404: fix default pinctrl settings for blsp1

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Date:   Sat, 11 Jun 2022 23:03:24 +0300
From:   Andrey Konovalov <andrey.konovalov@...aro.org>
To:     bjorn.andersson@...aro.org, agross@...nel.org
Cc:     robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
        vinod.koul@...aro.org, linux-arm-msm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] arm64: dts: qcom: qcs404: fix default pinctrl settings
 for blsp1_spi1

On 6/11/22 22:57, Andrey Konovalov wrote:
> The current settings refer to "blsp_spi1" function which isn't defined.
> For this reason an attempt to enable blsp1_spi1 interface results in
> the probe failure below:
> 
> [    3.492900] qcs404-pinctrl 1000000.pinctrl: invalid function blsp_spi1 in map table
> [    3.502460] qcs404-pinctrl 1000000.pinctrl: invalid function blsp_spi1 in map table
> [    3.517725] qcs404-pinctrl 1000000.pinctrl: invalid function blsp_spi1 in map table
> [    3.532998] qcs404-pinctrl 1000000.pinctrl: invalid function blsp_spi1 in map table
> [    3.548277] spi_qup: probe of 78b6000.spi failed with error -22
> 
> Fix this by making the functions used in qcs404.dtsi to match the contents
> of drivers/pinctrl/qcom/pinctrl-qcs404.c.

... and Documentation/devicetree/bindings/pinctrl/qcom,qcs404-pinctrl.txt.

> 
> Signed-off-by: Andrey Konovalov <andrey.konovalov@...aro.org>
> ---
>   arch/arm64/boot/dts/qcom/qcs404.dtsi | 21 +++++++++++++++++++--
>   1 file changed, 19 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/qcom/qcs404.dtsi b/arch/arm64/boot/dts/qcom/qcs404.dtsi
> index d912166b7552..0d9e1f19aa67 100644
> --- a/arch/arm64/boot/dts/qcom/qcs404.dtsi
> +++ b/arch/arm64/boot/dts/qcom/qcs404.dtsi
> @@ -669,8 +669,25 @@ blsp1_spi0_default: blsp1-spi0-default {
>   			};
>   
>   			blsp1_spi1_default: blsp1-spi1-default {
> -				pins = "gpio22", "gpio23", "gpio24", "gpio25";
> -				function = "blsp_spi1";
> +				mosi {
> +					pins = "gpio22";
> +					function = "blsp_spi_mosi_a1";
> +				};
> +
> +				miso {
> +					pins = "gpio23";
> +					function = "blsp_spi_miso_a1";
> +				};
> +
> +				cs_n {
> +					pins = "gpio24";
> +					function = "blsp_spi_cs_n_a1";
> +				};
> +
> +				clk {
> +					pins = "gpio25";
> +					function = "blsp_spi_clk_a1";
> +				};
>   			};
>   
>   			blsp1_spi2_default: blsp1-spi2-default {