Enable IR remote controller which find in Amlogic's Meson-AXG SoC.

Signed-off-by: Yixun Lan <yixun....@amlogic.com>

---

Changes since v1 at [1]:
 - drop the compatbile 'amlogic,meson-gx-ir'

[1]
 http://lists.infradead.org/pipermail/linux-amlogic/2017-November/005527.html
---
 arch/arm64/boot/dts/amlogic/meson-axg-s400.dts |  6 ++++++
 arch/arm64/boot/dts/amlogic/meson-axg.dtsi     | 14 ++++++++++++++
 2 files changed, 20 insertions(+)

diff --git a/arch/arm64/boot/dts/amlogic/meson-axg-s400.dts 
b/arch/arm64/boot/dts/amlogic/meson-axg-s400.dts
index 0864d1ff2d9b..ca676cafdbb3 100644
--- a/arch/arm64/boot/dts/amlogic/meson-axg-s400.dts
+++ b/arch/arm64/boot/dts/amlogic/meson-axg-s400.dts
@@ -34,3 +34,9 @@
        pinctrl-0 = <&i2c1_z_pins>;
        pinctrl-names = "default";
 };
+
+&ir {
+       status = "okay";
+       pinctrl-0 = <&remote_input_ao_pins>;
+       pinctrl-names = "default";
+};
diff --git a/arch/arm64/boot/dts/amlogic/meson-axg.dtsi 
b/arch/arm64/boot/dts/amlogic/meson-axg.dtsi
index 9bb85893c1b7..f68f709762dd 100644
--- a/arch/arm64/boot/dts/amlogic/meson-axg.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-axg.dtsi
@@ -616,6 +616,13 @@
                                        #gpio-cells = <2>;
                                        gpio-ranges = <&pinctrl_aobus 0 0 15>;
                                };
+
+                               remote_input_ao_pins: remote_input_ao {
+                                       mux {
+                                               groups = "remote_input_ao";
+                                               function = "remote_input_ao";
+                                       };
+                               };
                        };
 
                        i2c_AO: i2c@5000 {
@@ -664,6 +671,13 @@
                                clock-names = "xtal", "pclk", "baud";
                                status = "disabled";
                        };
+
+                       ir: ir@8000 {
+                               compatible = "amlogic,meson-gxbb-ir";
+                               reg = <0x0 0x8000 0x0 0x20>;
+                               interrupts = <GIC_SPI 196 IRQ_TYPE_EDGE_RISING>;
+                               status = "disabled";
+                       };
                };
        };
 };
-- 
2.15.0

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