MIPS: mscc: Add ocelot dtsi

Add a device tree include file for the Microsemi Ocelot SoC.

Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Allan Nielsen <Allan.Nielsen@microsemi.com>
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/18855/
Signed-off-by: James Hogan <jhogan@kernel.org>

diff --git a/arch/mips/boot/dts/Makefile b/arch/mips/boot/dts/Makefile
index e2c6f13..1e79cab 100644 (file)
--- a/arch/mips/boot/dts/Makefile
+++ b/arch/mips/boot/dts/Makefile
@@ -4,6 +4,7 @@ subdir-y        += cavium-octeon
 subdir-y       += img
 subdir-y       += ingenic
 subdir-y       += lantiq
+subdir-y       += mscc
 subdir-y       += mti
 subdir-y       += netlogic
 subdir-y       += ni

diff --git a/arch/mips/boot/dts/mscc/Makefile b/arch/mips/boot/dts/mscc/Makefile
new file mode 100644 (file)
index 0000000..dd08e63
--- /dev/null
+++ b/arch/mips/boot/dts/mscc/Makefile
@@ -0,0 +1 @@
+obj-y                          += $(patsubst %.dtb, %.dtb.o, $(dtb-y))

diff --git a/arch/mips/boot/dts/mscc/ocelot.dtsi b/arch/mips/boot/dts/mscc/ocelot.dtsi
new file mode 100644 (file)
index 0000000..dd239ca
--- /dev/null
+++ b/arch/mips/boot/dts/mscc/ocelot.dtsi
@@ -0,0 +1,117 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+/* Copyright (c) 2017 Microsemi Corporation */
+
+/ {
+       #address-cells = <1>;
+       #size-cells = <1>;
+       compatible = "mscc,ocelot";
+
+       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 {
+               #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 = <500000000>;
+       };
+
+       ahb_clk: ahb-clk {
+               compatible = "fixed-factor-clock";
+               #clock-cells = <0>;
+               clocks = <&cpu_clk>;
+               clock-div = <2>;
+               clock-mult = <1>;
+       };
+
+       ahb@70000000 {
+               compatible = "simple-bus";
+               #address-cells = <1>;
+               #size-cells = <1>;
+               ranges = <0 0x70000000 0x2000000>;
+
+               interrupt-parent = <&intc>;
+
+               cpu_ctrl: syscon@0 {
+                       compatible = "mscc,ocelot-cpu-syscon", "syscon";
+                       reg = <0x0 0x2c>;
+               };
+
+               intc: interrupt-controller@70 {
+                       compatible = "mscc,ocelot-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,ocelot-chip-reset";
+                       reg = <0x1070008 0x4>;
+               };
+
+               gpio: pinctrl@1070034 {
+                       compatible = "mscc,ocelot-pinctrl";
+                       reg = <0x1070034 0x68>;
+                       gpio-controller;
+                       #gpio-cells = <2>;
+                       gpio-ranges = <&gpio 0 0 22>;
+
+                       uart_pins: uart-pins {
+                               pins = "GPIO_6", "GPIO_7";
+                               function = "uart";
+                       };
+
+                       uart2_pins: uart2-pins {
+                               pins = "GPIO_12", "GPIO_13";
+                               function = "uart2";
+                       };
+               };
+       };
+};