arm64: dts: amlogic: c3: add ao secure node

Add node for board info registers, which allows getting SoC family and
board revision.

For example, with MESON_GX_SOCINFO config enabled we can get the
following information for board with Amlogic C3 SoC:
soc soc0: Amlogic C3 (C308L) Revision 3d:a (1:1) Detected

Signed-off-by: Xianwei Zhao <xianwei.zhao@amlogic.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20240719-soc_info-v3-4-020a3b687c0c@amlogic.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>

diff --git a/arch/arm64/boot/dts/amlogic/amlogic-c3.dtsi b/arch/arm64/boot/dts/amlogic/amlogic-c3.dtsi
index f8fb060c49aebb50d1a4fde6270cf57600138f8d..c913dd409e64f9db4cf96b0ac4834b3a7e30732d 100644 (file)
--- a/arch/arm64/boot/dts/amlogic/amlogic-c3.dtsi
+++ b/arch/arm64/boot/dts/amlogic/amlogic-c3.dtsi
@@ -129,6 +129,13 @@
                                clock-names = "xtal", "pclk", "baud";
                        };
 
+                       sec_ao: ao-secure@10220 {
+                               compatible = "amlogic,c3-ao-secure",
+                                            "amlogic,meson-gx-ao-secure",
+                                            "syscon";
+                               reg = <0x0 0x10220 0x0 0x140>;
+                               amlogic,has-chip-id;
+                       };
                };
        };
 };