arm64: dts: meson-g12a: Add AO-CEC nodes

Amlogic G12A embeds 2 CEC controllers :
- AO-CEC-A the same controller as in GXBB, GXL & GXM SoCs
- AO-CEC-B is a new controller

Note, the two controller can work simultanously since 2 Pads can
handle CEC, thus this SoC can handle 2 distinct CEC busses.

This patch adds the nodes for the AO-CEC-A and AO-CEC-B controllers.
Signed-off-by: NNeil Armstrong <narmstrong@baylibre.com>
Signed-off-by: NKevin Hilman <khilman@baylibre.com>

arch/arm64/boot/dts/amlogic/meson-g12a.dtsi

@@ -169,6 +169,22 @@
 						gpio-ranges = <&periphs_pinctrl 0 0 86>;
 					};
 
+					cec_ao_a_h_pins: cec_ao_a_h {
+						mux {
+							groups = "cec_ao_a_h";
+							function = "cec_ao_a_h";
+							bias-disable;
+						};
+					};
+
+					cec_ao_b_h_pins: cec_ao_b_h {
+						mux {
+							groups = "cec_ao_b_h";
+							function = "cec_ao_b_h";
+							bias-disable;
+						};
+					};
+
 					hdmitx_ddc_pins: hdmitx_ddc {
 						mux {
 							groups = "hdmitx_sda",
@@ -405,12 +421,30 @@
 				};
 			};
 
+			cec_AO: cec@100 {
+				compatible = "amlogic,meson-gx-ao-cec";
+				reg = <0x0 0x00100 0x0 0x14>;
+				interrupts = <GIC_SPI 199 IRQ_TYPE_EDGE_RISING>;
+				clocks = <&clkc_AO CLKID_AO_CEC>;
+				clock-names = "core";
+				status = "disabled";
+			};
+
 			sec_AO: ao-secure@140 {
 				compatible = "amlogic,meson-gx-ao-secure", "syscon";
 				reg = <0x0 0x140 0x0 0x140>;
 				amlogic,has-chip-id;
 			};
 
+			cecb_AO: cec@280 {
+				compatible = "amlogic,meson-g12a-ao-cec";
+				reg = <0x0 0x00280 0x0 0x1c>;
+				interrupts = <GIC_SPI 203 IRQ_TYPE_EDGE_RISING>;
+				clocks = <&clkc_AO CLKID_AO_CTS_OSCIN>;
+				clock-names = "oscin";
+				status = "disabled";
+			};
+
 			uart_AO: serial@3000 {
 				compatible = "amlogic,meson-gx-uart",
 					     "amlogic,meson-ao-uart";