ARM: dts: r8a7791: Add TPU device node

Enable support for the 4 PWM channels provided by the 16-bit Timer Pulse
Unit on R-Car M2-W, by adding a device node describing the TPU.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20200316102540.28887-2-geert+renesas@glider.be

diff --git a/arch/arm/boot/dts/r8a7791.dtsi b/arch/arm/boot/dts/r8a7791.dtsi
index 6e5bd86..ba006da 100644 (file)
--- a/arch/arm/boot/dts/r8a7791.dtsi
+++ b/arch/arm/boot/dts/r8a7791.dtsi
@@ -291,6 +291,17 @@
                        reg = <0 0xe6060000 0 0x250>;
                };
 
+               tpu: pwm@e60f0000 {
+                       compatible = "renesas,tpu-r8a7791", "renesas,tpu";
+                       reg = <0 0xe60f0000 0 0x148>;
+                       interrupts = <GIC_SPI 135 IRQ_TYPE_LEVEL_HIGH>;
+                       clocks = <&cpg CPG_MOD 304>;
+                       power-domains = <&sysc R8A7791_PD_ALWAYS_ON>;
+                       resets = <&cpg 304>;
+                       #pwm-cells = <3>;
+                       status = "disabled";
+               };
+
                cpg: clock-controller@e6150000 {
                        compatible = "renesas,r8a7791-cpg-mssr";
                        reg = <0 0xe6150000 0 0x1000>;