From mboxrd@z Thu Jan 1 00:00:00 1970 From: narmstrong@baylibre.com (Neil Armstrong) Date: Wed, 14 Jun 2017 14:05:44 +0200 Subject: [PATCH v3 1/3] dt-bindings: arm: amlogic: Add SoC information bindings In-Reply-To: <1497441946-24379-1-git-send-email-narmstrong@baylibre.com> References: <1497441946-24379-1-git-send-email-narmstrong@baylibre.com> Message-ID: <1497441946-24379-2-git-send-email-narmstrong@baylibre.com> To: linus-amlogic@lists.infradead.org List-Id: linus-amlogic.lists.infradead.org Add bindings for the SoC information register of the Amlogic SoCs. Signed-off-by: Neil Armstrong --- 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..a6d8754 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: + - 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>; + has-chip-id; +}; -- 1.9.1