MSCC: add device tree for Serval pcb105 board

Add device tree based on evaluation board pcb105.

Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>

diff --git a/arch/mips/dts/mscc,serval.dtsi b/arch/mips/dts/mscc,serval.dtsi
new file mode 100644 (file)
index 0000000..bd60051
--- /dev/null
+++ b/arch/mips/dts/mscc,serval.dtsi
@@ -0,0 +1,149 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (c) 2018 Microsemi Corporation
+ */
+
+/ {
+       #address-cells = <1>;
+       #size-cells = <1>;
+       compatible = "mscc,serval";
+
+       cpus {
+               #address-cells = <1>;
+               #size-cells = <0>;
+
+               cpu@0 {
+                       compatible = "mips,mips24KEc";
+                       device_type = "cpu";
+                       clocks = <&cpu_clk>;
+                       reg = <0>;
+               };
+       };
+
+       aliases {
+               serial0 = &uart0;
+       };
+
+       cpuintc: interrupt-controller@0 {
+               #address-cells = <0>;
+               #interrupt-cells = <1>;
+               interrupt-controller;
+               compatible = "mti,cpu-interrupt-controller";
+       };
+
+       cpu_clk: cpu-clock {
+               compatible = "fixed-clock";
+               #clock-cells = <0>;
+               clock-frequency = <416666666>;
+       };
+
+       sys_clk: sys-clk {
+               compatible = "fixed-clock";
+               #clock-cells = <0>;
+               clock-frequency = <208333333>;
+       };
+
+       ahb_clk: ahb-clk {
+               compatible = "fixed-clock";
+               #clock-cells = <0>;
+               clock-frequency = <208333333>;
+       };
+
+       ahb {
+               compatible = "simple-bus";
+               #address-cells = <1>;
+               #size-cells = <1>;
+               ranges = <0 0x70000000 0x2000000>;
+
+               interrupt-parent = <&intc>;
+
+               cpu_ctrl: syscon@0 {
+                       compatible = "mscc,serval-cpu-syscon", "syscon";
+                       reg = <0x0 0x2c>;
+               };
+
+               intc: interrupt-controller@70 {
+                       compatible = "mscc,serval-icpu-intr";
+                       reg = <0x70 0x70>;
+                       #interrupt-cells = <1>;
+                       interrupt-controller;
+                       interrupt-parent = <&cpuintc>;
+                       interrupts = <2>;
+               };
+
+               uart0: serial@100000 {
+                       pinctrl-0 = <&uart_pins>;
+                       pinctrl-names = "default";
+                       compatible = "ns16550a";
+                       reg = <0x100000 0x20>;
+                       interrupts = <6>;
+                       clocks = <&ahb_clk>;
+                       reg-io-width = <4>;
+                       reg-shift = <2>;
+
+                       status = "disabled";
+               };
+
+               uart2: serial@100800 {
+                       pinctrl-0 = <&uart2_pins>;
+                       pinctrl-names = "default";
+                       compatible = "ns16550a";
+                       reg = <0x100800 0x20>;
+                       interrupts = <7>;
+                       clocks = <&ahb_clk>;
+                       reg-io-width = <4>;
+                       reg-shift = <2>;
+
+                       status = "disabled";
+               };
+
+               reset@1070008 {
+                       compatible = "mscc,serval-chip-reset";
+                       reg = <0x1070008 0x4>;
+               };
+
+               gpio: pinctrl@1070034 {
+                       compatible = "mscc,serval-pinctrl";
+                       reg = <0x1070034 0x68>;
+                       gpio-controller;
+                       #gpio-cells = <2>;
+                       gpio-ranges = <&gpio 0 0 22>;
+
+                       sgpio_pins: sgpio-pins {
+                               pins = "GPIO_0", "GPIO_2", "GPIO_3", "GPIO_1";
+                               function = "sio";
+                       };
+
+                       uart_pins: uart-pins {
+                               pins = "GPIO_26", "GPIO_27";
+                               function = "uart";
+                       };
+
+                       uart2_pins: uart2-pins {
+                               pins = "GPIO_13", "GPIO_14";
+                               function = "uart2";
+                       };
+               };
+
+               spi0: spi-bitbang {
+                       compatible = "mscc,luton-bb-spi";
+                       status = "okay";
+                       reg = <0x50 0x4>;
+                       num-chipselects = <1>;
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+               };
+
+               sgpio: gpio@10700b4 {
+                       compatible = "mscc,luton-sgpio";
+                       status = "disabled";
+                       clocks = <&sys_clk>;
+                       pinctrl-0 = <&sgpio_pins>;
+                       pinctrl-names = "default";
+                       reg = <0x10700b4 0x100>;
+                       gpio-controller;
+                       #gpio-cells = <2>;
+                       gpio-ranges = <&sgpio 0 0 64>;
+               };
+       };
+};

diff --git a/arch/mips/dts/serval_pcb105.dts b/arch/mips/dts/serval_pcb105.dts
new file mode 100644 (file)
index 0000000..d0d6fac
--- /dev/null
+++ b/arch/mips/dts/serval_pcb105.dts
@@ -0,0 +1,56 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (c) 2018 Microsemi Corporation
+ */
+
+/dts-v1/;
+#include "mscc,serval.dtsi"
+
+/ {
+       model = "Serval PCB105 Reference Board";
+       compatible = "mscc,serval-pcb105", "mscc,serval";
+
+       aliases {
+               spi0 = &spi0;
+               serial0 = &uart0;
+       };
+
+       chosen {
+               stdout-path = "serial0:115200n8";
+       };
+
+       gpio-leds {
+               compatible = "gpio-leds";
+
+               status_green {
+                       label = "pcb105:green:status";
+                       gpios = <&sgpio 43 1>; /* p11.1 */
+                       default-state = "on";
+               };
+
+               status_red {
+                       label = "pcb105:red:status";
+                       gpios = <&sgpio 11 1>; /* p11.0 */
+                       default-state = "off";
+               };
+       };
+};
+
+&uart0 {
+       status = "okay";
+};
+
+&spi0 {
+       status = "okay";
+       spi-flash@0 {
+               compatible = "spi-flash";
+               spi-max-frequency = <18000000>; /* input clock */
+               reg = <0>; /* CS0 */
+               spi-cs-high;
+       };
+};
+
+&sgpio {
+       status = "okay";
+       sgpio-ports = <0x00FFFFFF>;
+};