MLK-20441-2 dts: lpspi: Add lpspi3 and its slave dts files for imx8qm

For lpspi test, add these two features, use lpspi3 without cs-gpio.
Still support spi-nor using lpspi0 with cs-gpio mode.

- fsl-imx8qm-device.dtsi:
	Add node to support lpspi3.
- fsl-imx8qm-lpddr4-arm2-lpspi.dts:
	Add lpspi3 support for imx8qm-lpddr4-arm2 board.
- fsl-imx8qm-lpddr4-arm2-lpspi-slave.dts:
	Enable spi slave mode for lpspi3.

Signed-off-by: Clark Wang <xiaoning.wang@nxp.com>

1 files changed, 26 insertions, 1 deletions

diff --git a/arch/arm64/boot/dts/freescale/fsl-imx8qm-lpddr4-arm2-lpspi.dts b/arch/arm64/boot/dts/freescale/fsl-imx8qm-lpddr4-arm2-lpspi.dts
index d6d7d770eaee..844bdda456d4 100644
--- a/arch/arm64/boot/dts/freescale/fsl-imx8qm-lpddr4-arm2-lpspi.dts
+++ b/arch/arm64/boot/dts/freescale/fsl-imx8qm-lpddr4-arm2-lpspi.dts
@@ -32,6 +32,15 @@
 			>;
 		};
 
+		pinctrl_lpspi3: lpspi3grp {
+			fsl,pins = <
+				SC_P_SPI3_SCK_DMA_SPI3_SCK		0x0600004c
+				SC_P_SPI3_SDO_DMA_SPI3_SDO		0x0600004c
+				SC_P_SPI3_SDI_DMA_SPI3_SDI		0x0600004c
+				SC_P_SPI3_CS0_DMA_SPI3_CS0		0x0600004c
+			>;
+		};
+
 	};
 };
 
@@ -48,7 +57,23 @@
 		#address-cells = <1>;
 		#size-cells = <1>;
 		compatible = "atmel,at45", "atmel,dataflash";
-		spi-max-frequency = <500000>;
+		spi-max-frequency = <5000000>;
 		reg = <0>;
         };
 };
+
+&lpspi3 {
+	#address-cells = <1>;
+	#size-cells = <0>;
+	fsl,spi-num-chipselects = <1>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_lpspi3>;
+	status = "okay";
+
+	spidev0: spi@0 {
+		reg = <0>;
+		compatible = "rohm,dh2228fv";
+		spi-max-frequency = <30000000>;
+	};
+
+};