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author | Sascha Hauer <s.hauer@pengutronix.de> | 2017-10-06 06:12:41 +0200 |
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committer | Sascha Hauer <s.hauer@pengutronix.de> | 2017-10-06 06:12:41 +0200 |
commit | ebde8820a04dd73a09f50ba84b8cf8ec3773d6ba (patch) | |
tree | 031d15dcd26f5b737adddc5042a3ddabbb6051f7 /dts/Bindings/arm/amlogic.txt | |
parent | 15af9fc8cc9e18409893d2375271d64cac76924a (diff) | |
download | barebox-ebde8820a04dd73a09f50ba84b8cf8ec3773d6ba.tar.gz barebox-ebde8820a04dd73a09f50ba84b8cf8ec3773d6ba.tar.xz |
dts: update to v4.14-rc1
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'dts/Bindings/arm/amlogic.txt')
-rw-r--r-- | dts/Bindings/arm/amlogic.txt | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/dts/Bindings/arm/amlogic.txt b/dts/Bindings/arm/amlogic.txt index 0fff40a633..4e4bc0bae5 100644 --- a/dts/Bindings/arm/amlogic.txt +++ b/dts/Bindings/arm/amlogic.txt @@ -1,6 +1,18 @@ Amlogic MesonX device tree bindings ------------------------------------------- +Work in progress statement: + +Device tree files and bindings applying to Amlogic SoCs and boards are +considered "unstable". Any Amlogic device tree binding may change at +any time. Be sure to use a device tree binary and a kernel image +generated from the same source tree. + +Please refer to Documentation/devicetree/bindings/ABI.txt for a definition of a +stable binding/ABI. + +--------------------------------------------------------------- + Boards with the Amlogic Meson6 SoC shall have the following properties: Required root node property: compatible: "amlogic,meson6" @@ -61,3 +73,32 @@ 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; +}; |