linux-kernel - Re: [PATCH] arm64: dts: imx8mm-venice: fix spi2 pin configuration

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Date:   Mon, 28 Feb 2022 10:04:48 -0800
From:   Tim Harvey <tharvey@...eworks.com>
To:     Johan Hovold <johan@...nel.org>
Cc:     Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>,
        Linux ARM Mailing List <linux-arm-kernel@...ts.infradead.org>,
        open list <linux-kernel@...r.kernel.org>,
        stable@...r.kernel.org
Subject: Re: [PATCH] arm64: dts: imx8mm-venice: fix spi2 pin configuration

On Mon, Feb 28, 2022 at 2:18 AM Johan Hovold <johan@...nel.org> wrote:
>
> Due to what looks like a copy-paste error, the ECSPI2_MISO pad is not
> muxed for SPI mode and causes reads from a slave-device connected to the
> SPI header to always return zero.
>
> Configure the ECSPI2_MISO pad for SPI mode on the gw71xx, gw72xx and
> gw73xx families of boards that got this wrong.
>
> Fixes: 6f30b27c5ef5 ("arm64: dts: imx8mm: Add Gateworks i.MX 8M Mini Development Kits")
> Cc: stable@...r.kernel.org      # 5.12
> Cc: Tim Harvey <tharvey@...eworks.com>
> Signed-off-by: Johan Hovold <johan@...nel.org>
> ---
>  arch/arm64/boot/dts/freescale/imx8mm-venice-gw71xx.dtsi | 2 +-
>  arch/arm64/boot/dts/freescale/imx8mm-venice-gw72xx.dtsi | 2 +-
>  arch/arm64/boot/dts/freescale/imx8mm-venice-gw73xx.dtsi | 2 +-
>  3 files changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/arch/arm64/boot/dts/freescale/imx8mm-venice-gw71xx.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-venice-gw71xx.dtsi
> index 28012279f6f6..ecf6c9a6db90 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mm-venice-gw71xx.dtsi
> +++ b/arch/arm64/boot/dts/freescale/imx8mm-venice-gw71xx.dtsi
> @@ -166,7 +166,7 @@ pinctrl_spi2: spi2grp {
>                 fsl,pins = <
>                         MX8MM_IOMUXC_ECSPI2_SCLK_ECSPI2_SCLK    0xd6
>                         MX8MM_IOMUXC_ECSPI2_MOSI_ECSPI2_MOSI    0xd6
> -                       MX8MM_IOMUXC_ECSPI2_SCLK_ECSPI2_SCLK    0xd6
> +                       MX8MM_IOMUXC_ECSPI2_MISO_ECSPI2_MISO    0xd6
>                         MX8MM_IOMUXC_ECSPI2_SS0_GPIO5_IO13      0xd6
>                 >;
>         };
> diff --git a/arch/arm64/boot/dts/freescale/imx8mm-venice-gw72xx.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-venice-gw72xx.dtsi
> index 27afa46a253a..6e0f0a2f6970 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mm-venice-gw72xx.dtsi
> +++ b/arch/arm64/boot/dts/freescale/imx8mm-venice-gw72xx.dtsi
> @@ -231,7 +231,7 @@ pinctrl_spi2: spi2grp {
>                 fsl,pins = <
>                         MX8MM_IOMUXC_ECSPI2_SCLK_ECSPI2_SCLK    0xd6
>                         MX8MM_IOMUXC_ECSPI2_MOSI_ECSPI2_MOSI    0xd6
> -                       MX8MM_IOMUXC_ECSPI2_SCLK_ECSPI2_SCLK    0xd6
> +                       MX8MM_IOMUXC_ECSPI2_MISO_ECSPI2_MISO    0xd6
>                         MX8MM_IOMUXC_ECSPI2_SS0_GPIO5_IO13      0xd6
>                 >;
>         };
> diff --git a/arch/arm64/boot/dts/freescale/imx8mm-venice-gw73xx.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-venice-gw73xx.dtsi
> index a59e849c7be2..6c4c9ae9715f 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mm-venice-gw73xx.dtsi
> +++ b/arch/arm64/boot/dts/freescale/imx8mm-venice-gw73xx.dtsi
> @@ -280,7 +280,7 @@ pinctrl_spi2: spi2grp {
>                 fsl,pins = <
>                         MX8MM_IOMUXC_ECSPI2_SCLK_ECSPI2_SCLK    0xd6
>                         MX8MM_IOMUXC_ECSPI2_MOSI_ECSPI2_MOSI    0xd6
> -                       MX8MM_IOMUXC_ECSPI2_SCLK_ECSPI2_SCLK    0xd6
> +                       MX8MM_IOMUXC_ECSPI2_MISO_ECSPI2_MISO    0xd6
>                         MX8MM_IOMUXC_ECSPI2_SS0_GPIO5_IO13      0xd6
>                 >;
>         };
> --
> 2.34.1
>

Johan,

Thanks for catching this!

Acked-by: Tim Harvey <tharvey@...eworks.com>

Best Regards,

Tim