ebyte-ecb41-pge: Add spidev overlays (RPi-compatible)

arch/arm/boot/dts/overlay/Makefile

@@ -1,5 +1,8 @@
 # SPDX-License-Identifier: GPL-2.0
 dtbo-$(CONFIG_ARCH_ROCKCHIP) += \
+	rockchip-ebyte-ecb41-pge-spi0-1cs-spidev.dtbo \
+	rockchip-ebyte-ecb41-pge-spi0-2cs-spidev.dtbo \
+	rockchip-ebyte-ecb41-pge-spi1-1cs-spidev.dtbo \
 	rockchip-forlinx-ok3506-s12-spi0-1cs-spidev.dtbo \
 	rockchip-forlinx-ok3506-s12-spi0-2cs-spidev.dtbo \
 	rockchip-forlinx-ok3506-s12-spi1-1cs-spidev.dtbo \

arch/arm/boot/dts/overlay/README.rockchip-overlays

@@ -13,6 +13,11 @@ for RK3506:
 - disable-ethernet0
 - disable-ethernet1
 
+for Ebyte ECB41-PGE:
+- spi0-1cs-spidev
+- spi0-2cs-spidev
+- spi1-1cs-spidev
+
 for Forlinx OK3506-S12:
 - spi0-1cs-spidev
 - spi0-2cs-spidev
@@ -41,6 +46,18 @@ Disables `end0` ethernet adapter (`gmac0`, `mdio0`) to save power.
 ### rk3506-disable-ethernet1
 Disables `end1` ethernet adapter (`gmac1`, `mdio1`) to save power.
 
+### ebyte-ecb41-pge-spi0-1cs-spidev
+Enables SPI0 spidev on ebyte-ecb41-pge with one chipselect.
+Compatible with Raspberry Pi 'spi0-1cs' hats.
+
+### ebyte-ecb41-pge-spi0-2cs-spidev
+Enables SPI0 spidev on ebyte-ecb41-pge with two chipselects.
+Compatible with Raspberry Pi 'spi0-2cs' hats.
+
+### ebyte-ecb41-pge-spi1-1cs-spidev
+Enables SPI1 spidev on ebyte-ecb41-pge with one chipselect.
+Compatible with Raspberry Pi 'spi1-1cs' hats.
+
 ### forlinx-ok3506-s12-spi0-1cs-spidev
 Enables SPI0 spidev on forlinx-ok3506-s12 with one chipselect.
 Compatible with Raspberry Pi 'spi0-1cs' hats.

arch/arm/boot/dts/overlay/rockchip-ebyte-ecb41-pge-spi0-1cs-spidev.dts

@@ -0,0 +1,34 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Enable spidev on SPI0 with RM_IO pinmux at RPi SPI0 physical positions:
+ * MOSI = RM_IO9 (pin 19), MISO = RM_IO10 (pin 21),
+ * CLK = RM_IO8 (pin 23), CS0 = RM_IO14 (pin 24)
+ * Compatible with Raspberry Pi 'spi0-1cs' hats
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+	metadata {
+		title = "Enable SPI0 spidev on ebyte-ecb41-pge";
+		compatible = "ebyte,ecb41-pge";
+		category = "spi";
+		exclusive = "spi0", "RM_IO8", "RM_IO9", "RM_IO10", "RM_IO14";
+		description = "Enable SPI0 spidev using RM_IO9(MOSI), RM_IO10(MISO), RM_IO8(CLK), RM_IO14(CS0).";
+	};
+};
+
+&spi0 {
+	status = "okay";
+	num-cs = <1>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&rm_io8_spi0_clk &rm_io10_spi0_miso &rm_io9_spi0_mosi &rm_io14_spi0_csn0>;
+
+	spi@0 {
+		compatible = "rockchip,spidev";
+		reg = <0>;
+		spi-max-frequency = <50000000>;
+		status = "okay";
+	};
+};

arch/arm/boot/dts/overlay/rockchip-ebyte-ecb41-pge-spi0-2cs-spidev.dts

@@ -0,0 +1,41 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Enable spidev on SPI0 with RM_IO pinmux at RPi SPI0 physical positions:
+ * MOSI = RM_IO9 (pin 19), MISO = RM_IO10 (pin 21),
+ * CLK = RM_IO8 (pin 23), CS0 = RM_IO14 (pin 24), CS1 = RM_IO7 (pin 26)
+ * Compatible with Raspberry Pi 'spi0-2cs' hats
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+	metadata {
+		title = "Enable SPI0 spidev on ebyte-ecb41-pge with two chipselects";
+		compatible = "ebyte,ecb41-pge";
+		category = "spi";
+		exclusive = "spi0", "RM_IO7", "RM_IO8", "RM_IO9", "RM_IO10", "RM_IO14";
+		description = "Enable SPI0 spidev using RM_IO9(MOSI), RM_IO10(MISO), RM_IO8(CLK), RM_IO14(CS0), RM_IO7(CS1).";
+	};
+};
+
+&spi0 {
+	status = "okay";
+	num-cs = <2>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&rm_io8_spi0_clk &rm_io10_spi0_miso &rm_io9_spi0_mosi &rm_io14_spi0_csn0 &rm_io7_spi0_csn1>;
+
+	spi@0 {
+		compatible = "rockchip,spidev";
+		reg = <0>;
+		spi-max-frequency = <50000000>;
+		status = "okay";
+	};
+
+	spi@1 {
+		compatible = "rockchip,spidev";
+		reg = <1>;
+		spi-max-frequency = <50000000>;
+		status = "okay";
+	};
+};

arch/arm/boot/dts/overlay/rockchip-ebyte-ecb41-pge-spi1-1cs-spidev.dts

@@ -0,0 +1,34 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Enable spidev on SPI1 with RM_IO pinmux at RPi SPI1 physical positions:
+ * MOSI = RM_IO0 (pin 38), MISO = RM_IO11 (pin 35),
+ * CLK = RM_IO1 (pin 40), CS0 = RM_IO12 (pin 12)
+ * Compatible with Raspberry Pi 'spi1-1cs' hats
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+	metadata {
+		title = "Enable SPI1 spidev on ebyte-ecb41-pge";
+		compatible = "ebyte,ecb41-pge";
+		category = "spi";
+		exclusive = "spi1", "RM_IO0", "RM_IO1", "RM_IO11", "RM_IO12";
+		description = "Enable SPI1 spidev using RM_IO0(MOSI), RM_IO11(MISO), RM_IO1(CLK), RM_IO12(CS0).";
+	};
+};
+
+&spi1 {
+	status = "okay";
+	num-cs = <1>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&rm_io1_spi1_clk &rm_io11_spi1_miso &rm_io0_spi1_mosi &rm_io12_spi1_csn0>;
+
+	spi@0 {
+		compatible = "rockchip,spidev";
+		reg = <0>;
+		spi-max-frequency = <50000000>;
+		status = "okay";
+	};
+};

arch/arm/boot/dts/rk3506g-ebyte-ecb41-pge.dts

@@ -177,7 +177,7 @@
 };
 
 &cma {
-	size = <0x400000>;
+	size = <0x800000>;
 };
 
 &cpu0 {