[PATCH 3/4] arm64: dts: allwinner: a523: add IR receiver node

[Justin Suess]

The A523 has a CIR receiver in the RTC power domain, clocked from the
R-CCU, with its RX signal available on PL11.

Clock the module directly from the 24 MHz host oscillator; the driver
selects a /256 sample divider on this SoC, giving a sample period
close to the legacy 8 MHz / 64 configuration of older SoCs.

Keep the node disabled by default; boards with an IR receiver can
enable it.

Signed-off-by: Justin Suess <utilityemal77 at gmail.com>
---
 .../arm64/boot/dts/allwinner/sun55i-a523.dtsi | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi b/arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi
index ca6a16807049..5e46c4b1ee61 100644
--- a/arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi
@@ -927,6 +927,25 @@ r_i2c_pins: r-i2c-pins {
 				allwinner,pinmux = <2>;
 				function = "r_i2c0";
 			};
+
+			r_ir_rx_pin: r-ir-rx-pin {
+				pins = "PL11";
+				allwinner,pinmux = <2>;
+				function = "s_cir";
+			};
+		};
+
+		r_ir: ir at 7040000 {
+			compatible = "allwinner,sun55i-a523-ir";
+			reg = <0x07040000 0x400>;
+			interrupts = <GIC_SPI 167 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&r_ccu CLK_BUS_R_IR_RX>, <&r_ccu CLK_R_IR_RX>;
+			clock-names = "apb", "ir";
+			clock-frequency = <24000000>;
+			resets = <&r_ccu RST_BUS_R_IR_RX>;
+			pinctrl-names = "default";
+			pinctrl-0 = <&r_ir_rx_pin>;
+			status = "disabled";
 		};
 
 		pck600: power-controller at 7060000 {
-- 
2.54.0