arm64: dts: imx8mm-beacon-som: Add QSPI NOR flash support

imx8mm-beacon-som has a Quad-SPI NOR flash connected to the FlexSPI bus.

This patch enables the FlexSPI bus and configures it to work with the
flash part.

Signed-off-by: Adam Ford <aford173@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

diff --git a/arch/arm64/boot/dts/freescale/imx8mm-beacon-som.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-beacon-som.dtsi
index 0b8c4e4..09ad2d7 100644 (file)
--- a/arch/arm64/boot/dts/freescale/imx8mm-beacon-som.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mm-beacon-som.dtsi
@@ -75,6 +75,22 @@
        };
 };
 
+&flexspi {
+       pinctrl-names = "default";
+       pinctrl-0 = <&pinctrl_flexspi>;
+       status = "okay";
+
+       flash@0 {
+               reg = <0>;
+               #address-cells = <1>;
+               #size-cells = <1>;
+               compatible = "jedec,spi-nor";
+               spi-max-frequency = <80000000>;
+               spi-tx-bus-width = <4>;
+               spi-rx-bus-width = <4>;
+       };
+};
+
 &i2c1 {
        clock-frequency = <400000>;
        pinctrl-names = "default";
@@ -302,6 +318,17 @@
                        >;
                };
 
+               pinctrl_flexspi: flexspigrp {
+                       fsl,pins = <
+                               MX8MM_IOMUXC_NAND_ALE_QSPI_A_SCLK               0x1c2
+                               MX8MM_IOMUXC_NAND_CE0_B_QSPI_A_SS0_B            0x82
+                               MX8MM_IOMUXC_NAND_DATA00_QSPI_A_DATA0           0x82
+                               MX8MM_IOMUXC_NAND_DATA01_QSPI_A_DATA1           0x82
+                               MX8MM_IOMUXC_NAND_DATA02_QSPI_A_DATA2           0x82
+                               MX8MM_IOMUXC_NAND_DATA03_QSPI_A_DATA3           0x82
+                       >;
+               };
+
                pinctrl_pmic: pmicirqgrp {
                        fsl,pins = <
                                MX8MM_IOMUXC_GPIO1_IO03_GPIO1_IO3       0x141