[PATCH v3.1 1/3] dt-bindings: arm: amlogic: Add SoC information bindings

[PATCH v3.1 1/3] dt-bindings: arm: amlogic: Add SoC information bindings

[Neil Armstrong]

Add bindings for the SoC information register of the Amlogic SoCs.

Acked-by: Rob Herring <robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Signed-off-by: Neil Armstrong <narmstrong-rdvid1DuHRBWk0Htik3J/w@public.gmane.org>
---
 Documentation/devicetree/bindings/arm/amlogic.txt | 29 +++++++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/Documentation/devicetree/bindings/arm/amlogic.txt b/Documentation/devicetree/bindings/arm/amlogic.txt
index 5c01e65..eecb4084 100644
--- a/Documentation/devicetree/bindings/arm/amlogic.txt
+++ b/Documentation/devicetree/bindings/arm/amlogic.txt
@@ -60,3 +60,32 @@ Board compatible values (alphabetically, grouped by SoC):
   - "amlogic,q201" (Meson gxm s912)
   - "kingnovel,r-box-pro" (Meson gxm S912)
   - "nexbox,a1" (Meson gxm s912)
+
+Amlogic Meson Firmware registers Interface
+------------------------------------------
+
+The Meson SoCs have a register bank with status and data shared with the
+secure firmware.
+
+Required properties:
+ - compatible: For Meson GX SoCs, must be "amlogic,meson-gx-ao-secure", "syscon"
+
+Properties should indentify components of this register interface :
+
+Meson GX SoC Information
+------------------------
+A firmware register encodes the SoC type, package and revision information on
+the Meson GX SoCs.
+If present, the following property should be added :
+
+Optional properties:
+  - amlogic,has-chip-id: If present, the interface gives the current SoC version.
+
+Example
+-------
+
+ao-secure@140 {
+	compatible = "amlogic,meson-gx-ao-secure", "syscon";
+	reg = <0x0 0x140 0x0 0x140>;
+	amlogic,has-chip-id;
+};
-- 
1.9.1

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[PATCH v3.1 2/3] ARM64: dts: meson-gx: Add SoC info register

[Neil Armstrong]

Add node for the Amlogic Meson GX SoC information register.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
---
 arch/arm64/boot/dts/amlogic/meson-gx.dtsi | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/arm64/boot/dts/amlogic/meson-gx.dtsi b/arch/arm64/boot/dts/amlogic/meson-gx.dtsi
index 603491d..b74935e 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gx.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-gx.dtsi
@@ -365,6 +365,12 @@
 				#reset-cells = <1>;
 			};
 
+			sec_AO: ao-secure@140 {
+				compatible = "amlogic,meson-gx-ao-secure", "syscon";
+				reg = <0x0 0x140 0x0 0x140>;
+				amlogic,has-chip-id;
+			};
+
 			uart_AO: serial@4c0 {
 				compatible = "amlogic,meson-uart";
 				reg = <0x0 0x004c0 0x0 0x14>;
-- 
1.9.1