[PATCH v3.1 1/3] dt-bindings: arm: amlogic: Add SoC information bindings
From: Neil Armstrong <hidden>
Date: 2017-06-23 08:28:30
Also in:
linux-amlogic, linux-devicetree, lkml
Subsystem:
open firmware and flattened device tree bindings, the rest · Maintainers:
Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
Add bindings for the SoC information register of the Amlogic SoCs. Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Neil Armstrong <redacted> --- 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 at 140 { + compatible = "amlogic,meson-gx-ao-secure", "syscon"; + reg = <0x0 0x140 0x0 0x140>; + amlogic,has-chip-id; +};
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1.9.1