arm64: dts: imx8mn-evk: add QSPI flash

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@walle.cc>
Tested-by: Heiko Thiery <heiko.thiery@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

diff --git a/arch/arm64/boot/dts/freescale/imx8mn-evk.dtsi b/arch/arm64/boot/dts/freescale/imx8mn-evk.dtsi
index c3f1519..dc75d6d 100644 (file)
--- a/arch/arm64/boot/dts/freescale/imx8mn-evk.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mn-evk.dtsi
@@ -110,6 +110,22 @@
        };
 };
 
+&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 @@
                >;
        };
 
+       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