[PATCH v2] ARM: arch: dts: qspi: Add QSPI config to the NXP IMX8MN-EVK board

[Joacim Zetterling]

Add QSPI support in the default config and DTS files for the
NXP IMX8MN-EVK board. To be able to use it You also need the
QSPI driver enabled.

Tested on the NXP IMX8MN-EVK board as well as on an IMX8MN
custom bord supporting a QSPI flash. Tested with the memory
dump command i.e. 'md -s /dev/m25p0'.

Signed-off-by: Joacim Zetterling <joacim.zetterling at westermo.com>
---

Changes v2:
  - Removed the "default" pinctrl names from iomuxc
  - Renamed the flexspi device name

 arch/arm/configs/imx_v8_defconfig |  1 +
 arch/arm/dts/imx8mn-evk.dts       | 30 ++++++++++++++++++++++++++++++
 2 files changed, 31 insertions(+)

diff --git a/arch/arm/configs/imx_v8_defconfig b/arch/arm/configs/imx_v8_defconfig
index b28c868a99bf..fe6398cc873d 100644
--- a/arch/arm/configs/imx_v8_defconfig
+++ b/arch/arm/configs/imx_v8_defconfig
@@ -99,6 +99,7 @@ CONFIG_NET_USB=y
 CONFIG_NET_USB_ASIX=y
 CONFIG_NET_USB_SMSC95XX=y
 CONFIG_DRIVER_SPI_IMX=y
+CONFIG_SPI_NXP_FLEXSPI=y
 CONFIG_I2C=y
 CONFIG_I2C_IMX=y
 CONFIG_MTD=y
diff --git a/arch/arm/dts/imx8mn-evk.dts b/arch/arm/dts/imx8mn-evk.dts
index 9fe24b3184f1..b8e7e1acf539 100644
--- a/arch/arm/dts/imx8mn-evk.dts
+++ b/arch/arm/dts/imx8mn-evk.dts
@@ -60,3 +60,33 @@
 &ocotp {
 	barebox,provide-mac-address = <&fec1 0x640>;
 };
+
+&iomuxc {
+	pinctrl_flexspi0: flexspi0grp {
+		fsl,pins = <
+		MX8MN_IOMUXC_NAND_ALE_QSPI_A_SCLK	0x1c4
+		MX8MN_IOMUXC_NAND_CE0_B_QSPI_A_SS0_B	0x84
+		MX8MN_IOMUXC_NAND_DATA00_QSPI_A_DATA0	0x84
+		MX8MN_IOMUXC_NAND_DATA01_QSPI_A_DATA1	0x84
+		MX8MN_IOMUXC_NAND_DATA02_QSPI_A_DATA2	0x84
+		MX8MN_IOMUXC_NAND_DATA03_QSPI_A_DATA3	0x84
+		>;
+	};
+};
+
+&flexspi {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_flexspi0>;
+
+	system_flash: flash at 0 {
+		reg = <0>;
+		compatible = "jedec,spi-nor";
+		spi-max-frequency = <80000000>;
+		spi-tx-bus-width = <4>;
+		spi-rx-bus-width = <4>;
+		#address-cells = <1>;
+		#size-cells = <1>;
+	};
+};
+
-- 
2.25.1