linux-kernel - Re: [PATCH v2 01/33] arm64: dts: qcom: ipq6018-cp01-c1: correct blspi1 pins

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Date:   Tue, 27 Sep 2022 16:01:05 +0200
From:   Robert Marko <robimarko@...il.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...ainline.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Stephan Gerhold <stephan@...hold.net>,
        Shawn Guo <shawn.guo@...aro.org>,
        Vinod Koul <vkoul@...nel.org>,
        krishna Lanka <quic_vamslank@...cinc.com>,
        Sivaprakash Murugesan <sivaprak@...eaurora.org>,
        linux-arm-msm@...r.kernel.org, linux-gpio@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 01/33] arm64: dts: qcom: ipq6018-cp01-c1: correct
 blspi1 pins


On 26. 09. 2022. 09:43, Krzysztof Kozlowski wrote:
> When BLSPI1 (originally SPI0, later renamed in commit f82c48d46852
> ("arm64: dts: qcom: ipq6018: correct QUP peripheral labels")) was added,
> the device node lacked respective pin configuration assignment.   It
> used also blsp0_spi function but that was probably the same mistake as
> naming it SPI0.

Hi,

Sorry for making it confusing, but "blsp0_spi" is the correct function.
Pinctrl driver and datasheets call functions blsp0-blps5, but usually in DT
we call the nodes blsp1-blsp6.

It would probably be better for me to rename the nodes to blsp0-5 instead.

Regards,
Robert

>
> Fixes: 5bf635621245 ("arm64: dts: ipq6018: Add a few device nodes")
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
> ---
>   arch/arm64/boot/dts/qcom/ipq6018-cp01-c1.dts | 4 +++-
>   1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/arch/arm64/boot/dts/qcom/ipq6018-cp01-c1.dts b/arch/arm64/boot/dts/qcom/ipq6018-cp01-c1.dts
> index 1ba2eca33c7b..afc2dc79767d 100644
> --- a/arch/arm64/boot/dts/qcom/ipq6018-cp01-c1.dts
> +++ b/arch/arm64/boot/dts/qcom/ipq6018-cp01-c1.dts
> @@ -37,6 +37,8 @@ &blsp1_i2c3 {
>   
>   &blsp1_spi1 {
>   	cs-select = <0>;
> +	pinctrl-0 = <&spi_0_pins>;
> +	pinctrl-names = "default";
>   	status = "okay";
>   
>   	flash@0 {
> @@ -57,7 +59,7 @@ i2c_1_pins: i2c-1-pins {
>   
>   	spi_0_pins: spi-0-pins {
>   		pins = "gpio38", "gpio39", "gpio40", "gpio41";
> -		function = "blsp0_spi";
> +		function = "blsp1_spi";
>   		drive-strength = <8>;
>   		bias-pull-down;
>   	};