riscv: dts: Add DT support for SiFive FU540 PWM driver

Add the PWM DT node in SiFive FU540 soc-specific DT file.
Enable the PWM nodes in HiFive Unleashed board-specific DT file.

Signed-off-by: Yash Shah <yash.shah@sifive.com>
Cc: Palmer Dabbelt <palmer@sifive.com>
[paul.walmsley@sifive.com: added chip-specific compatible string;
 dropped reg-names string from pwm1]
Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>

diff --git a/arch/riscv/boot/dts/sifive/fu540-c000.dtsi b/arch/riscv/boot/dts/sifive/fu540-c000.dtsi
index 42b5ec2231008ede5252f96b506fd50752eef018..5a29211d396e15595984b303a9af90abc240f401 100644 (file)
--- a/arch/riscv/boot/dts/sifive/fu540-c000.dtsi
+++ b/arch/riscv/boot/dts/sifive/fu540-c000.dtsi
@@ -230,6 +230,24 @@
                        #size-cells = <0>;
                        status = "disabled";
                };
+               pwm0: pwm@10020000 {
+                       compatible = "sifive,fu540-c000-pwm", "sifive,pwm0";
+                       reg = <0x0 0x10020000 0x0 0x1000>;
+                       interrupt-parent = <&plic0>;
+                       interrupts = <42 43 44 45>;
+                       clocks = <&prci PRCI_CLK_TLCLK>;
+                       #pwm-cells = <3>;
+                       status = "disabled";
+               };
+               pwm1: pwm@10021000 {
+                       compatible = "sifive,fu540-c000-pwm", "sifive,pwm0";
+                       reg = <0x0 0x10021000 0x0 0x1000>;
+                       interrupt-parent = <&plic0>;
+                       interrupts = <46 47 48 49>;
+                       clocks = <&prci PRCI_CLK_TLCLK>;
+                       #pwm-cells = <3>;
+                       status = "disabled";
+               };
 
        };
 };

diff --git a/arch/riscv/boot/dts/sifive/hifive-unleashed-a00.dts b/arch/riscv/boot/dts/sifive/hifive-unleashed-a00.dts
index 93d68cbd64fe71ec0026d95e2b845c7c299326cc..104d334511cd6b5d619496226bde06fb982f264a 100644 (file)
--- a/arch/riscv/boot/dts/sifive/hifive-unleashed-a00.dts
+++ b/arch/riscv/boot/dts/sifive/hifive-unleashed-a00.dts
@@ -85,3 +85,11 @@
                reg = <0>;
        };
 };
+
+&pwm0 {
+       status = "okay";
+};
+
+&pwm1 {
+       status = "okay";
+};