[U-Boot] [PATCH 3/6] mips: luton: DT: Enable use of serial gpio

[Lars Povlsen]

From: Lars Povlsen <lars.povlsen at microsemi.com>

This enables the use of the MSCC serial GPIO driver, and add gpio-leds
nodes to the 'luton' pcb090 and pcb091 DT.

Signed-off-by: Lars Povlsen <lars.povlsen at microsemi.com>
---
 arch/mips/dts/luton_pcb090.dts | 23 +++++++++++++++++++++++
 arch/mips/dts/luton_pcb091.dts | 26 ++++++++++++++++++++++++++
 arch/mips/dts/mscc,luton.dtsi  | 23 +++++++++++++++++++++++
 3 files changed, 72 insertions(+)

diff --git a/arch/mips/dts/luton_pcb090.dts b/arch/mips/dts/luton_pcb090.dts
index a3f8926ad9..15fdb2a1cb 100644
--- a/arch/mips/dts/luton_pcb090.dts
+++ b/arch/mips/dts/luton_pcb090.dts
@@ -18,6 +18,29 @@
 	chosen {
 		stdout-path = "serial0:115200n8";
 	};
+
+	gpio-leds {
+		compatible = "gpio-leds";
+
+		status_green {
+			label = "pcb090:green:status";
+			gpios = <&sgpio 64 GPIO_ACTIVE_HIGH>; // p0.2
+			default-state = "on";
+		};
+
+		status_red {
+			label = "pcb090:red:status";
+			gpios = <&sgpio 65 GPIO_ACTIVE_HIGH>; // p1.2
+			default-state = "off";
+		};
+	};
+};
+
+&sgpio {
+	status = "okay";
+	gpio-ranges = <&sgpio 0 0 96>; // 32*<sgpio-bitcount>
+	sgpio-ports = <0xFFFFFFFF>;
+	sgpio-bitcount = <3>;
 };
 
 &uart0 {
diff --git a/arch/mips/dts/luton_pcb091.dts b/arch/mips/dts/luton_pcb091.dts
index 74f9274c21..a94e888f98 100644
--- a/arch/mips/dts/luton_pcb091.dts
+++ b/arch/mips/dts/luton_pcb091.dts
@@ -18,6 +18,32 @@
 	chosen {
 		stdout-path = "serial0:115200n8";
 	};
+
+	gpio-leds {
+		compatible = "gpio-leds";
+
+		top_dimmer {
+			label = "pcb091:top:dimmer";
+			gpios = <&gpio 29 GPIO_ACTIVE_LOW>;
+			default-state = "on";
+		};
+
+		status_green {
+			label = "pcb091:green:status";
+			gpios = <&sgpio 26 GPIO_ACTIVE_HIGH>; /* p26.0 */
+			default-state = "on";
+		};
+
+		status_red {
+			label = "pcb091:red:status";
+			gpios = <&sgpio 58 GPIO_ACTIVE_HIGH>; /* p26.1 */
+			default-state = "off";
+		};
+	};
+};
+
+&sgpio {
+	status = "okay";
 };
 
 &uart0 {
diff --git a/arch/mips/dts/mscc,luton.dtsi b/arch/mips/dts/mscc,luton.dtsi
index 6a4ad2a5be..d2b6843a7a 100644
--- a/arch/mips/dts/mscc,luton.dtsi
+++ b/arch/mips/dts/mscc,luton.dtsi
@@ -25,6 +25,11 @@
 		serial0 = &uart0;
 	};
 
+	sys_clk: sys-clk {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <250000000>;
+	};
 	ahb_clk: ahb-clk {
 		compatible = "fixed-clock";
 		#clock-cells = <0>;
@@ -57,11 +62,29 @@
 			#gpio-cells = <2>;
 			gpio-ranges = <&gpio 0 0 32>;
 
+			sgpio_pins: sgpio-pins {
+				pins = "GPIO_0", "GPIO_1", "GPIO_2", "GPIO_3";
+				function = "sio";
+			};
 			uart_pins: uart-pins {
 				pins = "GPIO_30", "GPIO_31";
 				function = "uart";
 			};
+		};
 
+		sgpio: gpio at 70130 {
+			compatible = "mscc,luton-sgpio";
+			status = "disabled";
+			clocks = <&sys_clk>;
+			pinctrl-0 = <&sgpio_pins>;
+			pinctrl-names = "default";
+			reg = <0x0070130 0x100>;
+			gpio-controller;
+			#gpio-cells = <2>;
+			gpio-ranges = <&sgpio 0 0 64>; /* 32*<sgpio-bitcount> */
+			mscc,sgpio-ports = <0xFFF000FF>;
+			mscc,sgpio-frequency = <12500000>;
+			mscc,sgpio-bitcount = <2>;
 		};
 
 		gpio_spi_bitbang: gpio at 10000064 {
-- 
2.19.2