linux-kernel - Re: [PATCH] arm64: dts: imx8mn-evk: add QSPI flash

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Date:   Tue, 1 Mar 2022 17:12:33 +0100
From:   Heiko Thiery <heiko.thiery@...il.com>
To:     Michael Walle <michael@...le.cc>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        NXP Linux Team <linux-imx@....com>,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] arm64: dts: imx8mn-evk: add QSPI flash

Hi Michael

Am Mo., 28. Feb. 2022 um 14:25 Uhr schrieb Michael Walle <michael@...le.cc>:
>
> There is a 32MiB Micron MT25QU256ABA1 serial NOR flash on the EVK board.
> Add a device tree node for it.
>
> Tested on a 8MNANOD3L-EVK.
>
> Signed-off-by: Michael Walle <michael@...le.cc>

Tested-by: Heiko Thiery <heiko.thiery@...il.com>

> ---
>  arch/arm64/boot/dts/freescale/imx8mn-evk.dtsi | 27 +++++++++++++++++++
>  1 file changed, 27 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/freescale/imx8mn-evk.dtsi b/arch/arm64/boot/dts/freescale/imx8mn-evk.dtsi
> index c3f15192b76c..dc75d6d13bb3 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mn-evk.dtsi
> +++ b/arch/arm64/boot/dts/freescale/imx8mn-evk.dtsi
> @@ -110,6 +110,22 @@ vddio: vddio-regulator {
>         };
>  };
>
> +&flexspi {
> +       pinctrl-names = "default";
> +       pinctrl-0 = <&pinctrl_flexspi>;
> +       status = "okay";
> +
> +       flash0: flash@0 {
> +               compatible = "jedec,spi-nor";
> +               reg = <0>;
> +               #address-cells = <1>;
> +               #size-cells = <1>;
> +               spi-max-frequency = <166000000>;
> +               spi-tx-bus-width = <4>;
> +               spi-rx-bus-width = <4>;
> +       };
> +};
> +
>  &i2c1 {
>         clock-frequency = <400000>;
>         pinctrl-names = "default";
> @@ -267,6 +283,17 @@ MX8MN_IOMUXC_SAI2_RXC_GPIO4_IO22   0x19
>                 >;
>         };
>
> +       pinctrl_flexspi: flexspigrp {
> +               fsl,pins = <
> +                       MX8MN_IOMUXC_NAND_ALE_QSPI_A_SCLK               0x1c2
> +                       MX8MN_IOMUXC_NAND_CE0_B_QSPI_A_SS0_B            0x82
> +                       MX8MN_IOMUXC_NAND_DATA00_QSPI_A_DATA0           0x82
> +                       MX8MN_IOMUXC_NAND_DATA01_QSPI_A_DATA1           0x82
> +                       MX8MN_IOMUXC_NAND_DATA02_QSPI_A_DATA2           0x82
> +                       MX8MN_IOMUXC_NAND_DATA03_QSPI_A_DATA3           0x82
> +               >;
> +       };
> +
>         pinctrl_gpio_led: gpioledgrp {
>                 fsl,pins = <
>                         MX8MN_IOMUXC_NAND_READY_B_GPIO3_IO16    0x19
> --
> 2.30.2
>