mips: ocelot: DT: Enable use of serial gpio

This enables the use of the MSCC serial GPIO driver on the MSCC
VCoreIII 'ocelot' SOC, and add gpio-leds nodes to the pcb123 and
pcb120 DT.

Signed-off-by: Lars Povlsen <lars.povlsen@microsemi.com>

diff --git a/arch/mips/dts/mscc,ocelot.dtsi b/arch/mips/dts/mscc,ocelot.dtsi
index 87b4736..2592003 100644 (file)
--- a/arch/mips/dts/mscc,ocelot.dtsi
+++ b/arch/mips/dts/mscc,ocelot.dtsi
@@ -37,6 +37,12 @@
                clock-frequency = <500000000>;
        };
 
+       sys_clk: sys-clk {
+               compatible = "fixed-clock";
+               #clock-cells = <0>;
+               clock-frequency = <250000000>;
+       };
+
        ahb_clk: ahb-clk {
                compatible = "fixed-clock";
                #clock-cells = <0>;
@@ -118,6 +124,11 @@
                        #gpio-cells = <2>;
                        gpio-ranges = <&gpio 0 0 22>;
 
+                       sgpio_pins: sgpio-pins {
+                               pins = "GPIO_0", "GPIO_1", "GPIO_2", "GPIO_3";
+                               function = "sg0";
+                       };
+
                        uart_pins: uart-pins {
                                pins = "GPIO_6", "GPIO_7";
                                function = "uart";
@@ -148,5 +159,17 @@
                                function = "si";
                        };
                };
+
+               sgpio: gpio@10700f8 {
+                       compatible = "mscc,ocelot-sgpio";
+                       status = "disabled";
+                       clocks = <&sys_clk>;
+                       pinctrl-0 = <&sgpio_pins>;
+                       pinctrl-names = "default";
+                       reg = <0x10700f8 0x100>;
+                       gpio-controller;
+                       #gpio-cells = <2>;
+                       gpio-ranges = <&sgpio 0 0 64>;
+               };
        };
 };

diff --git a/arch/mips/dts/ocelot_pcb120.dts b/arch/mips/dts/ocelot_pcb120.dts
index 47d305a..658719e 100644 (file)
--- a/arch/mips/dts/ocelot_pcb120.dts
+++ b/arch/mips/dts/ocelot_pcb120.dts
@@ -9,4 +9,80 @@
 / {
        model = "Ocelot PCB120 Reference Board";
        compatible = "mscc,ocelot-pcb120", "mscc,ocelot";
+
+       chosen {
+               stdout-path = "serial0:115200n8";
+       };
+
+       gpio-leds {
+               compatible = "gpio-leds";
+
+               poe_green {
+                       label = "pcb120:green:poe";
+                       gpios = <&sgpio 44 1>; /* p12.1 */
+                       default-state = "off";
+               };
+
+               poe_red {
+                       label = "pcb120:red:poe";
+                       gpios = <&sgpio 12 1>; /* p12.0 */
+                       default-state = "off";
+               };
+
+               alarm_green {
+                       label = "pcb120:green:alarm";
+                       gpios = <&sgpio 45 1>; /* p13.1 */
+                       default-state = "off";
+               };
+
+               alarm_red {
+                       label = "pcb120:red:alarm";
+                       gpios = <&sgpio 13 1>; /* p13.0 */
+                       default-state = "off";
+               };
+
+               dc_a_green {
+                       label = "pcb120:green:dc_a";
+                       gpios = <&sgpio 46 1>; /* p14.1 */
+                       default-state = "off";
+               };
+
+               dc_a_red {
+                       label = "pcb120:red:dc_a";
+                       gpios = <&sgpio 14 1>; /* p14.0 */
+                       default-state = "off";
+               };
+
+               dc_b_green {
+                       label = "pcb120:green:dc_b";
+                       gpios = <&sgpio 47 1>; /* p15.1 */
+                       default-state = "off";
+               };
+
+               dc_b_red {
+                       label = "pcb120:red:dc_b";
+                       gpios = <&sgpio 15 1>; /* p15.0 */
+                       default-state = "off";
+               };
+
+               status_green {
+                       label = "pcb120:green:status";
+                       gpios = <&sgpio 48 1>; /* p16.1 */
+                       default-state = "on";
+               };
+
+               status_red {
+                       label = "pcb120:red:alarm";
+                       gpios = <&sgpio 16 1>; /* p16.0 */
+                       default-state = "off";
+               };
+
+       };
+
+};
+
+&sgpio {
+       status = "okay";
+       mscc,sgpio-ports = <0x000FFFFF>;
 };
+

diff --git a/arch/mips/dts/ocelot_pcb123.dts b/arch/mips/dts/ocelot_pcb123.dts
index 17d8d32..c4cb7a1 100644 (file)
--- a/arch/mips/dts/ocelot_pcb123.dts
+++ b/arch/mips/dts/ocelot_pcb123.dts
@@ -9,4 +9,29 @@
 / {
        model = "Ocelot PCB123 Reference Board";
        compatible = "mscc,ocelot-pcb123", "mscc,ocelot";
+
+       chosen {
+               stdout-path = "serial0:115200n8";
+       };
+
+       gpio-leds {
+               compatible = "gpio-leds";
+
+               status_green {
+                       label = "pcb123:green:status";
+                       gpios = <&sgpio 43 1>; /* p11.1 */
+                       default-state = "on";
+               };
+
+               status_red {
+                       label = "pcb123:red:status";
+                       gpios = <&sgpio 11 1>; /* p11.0 */
+                       default-state = "off";
+               };
+       };
+};
+
+&sgpio {
+       status = "okay";
+       mscc,sgpio-ports = <0x00FFFFFF>;
 };