linux_dsm_epyc7002/Documentation/devicetree/bindings/arm/amlogic.txt
Arnd Bergmann 4bef2317b4 Amlogic ARM64 DT updates for v4.20, round 2
- new SoC support: basic support for G12A family
 - new board: Amlogic U200 board, using G12A SoC
 - fix SPI bus warnings from new dtc updates
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Merge tag 'amlogic-dt64-2' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-amlogic into next/dt

Amlogic ARM64 DT updates for v4.20, round 2
- new SoC support: basic support for G12A family
- new board: Amlogic U200 board, using G12A SoC
- fix SPI bus warnings from new dtc updates

* tag 'amlogic-dt64-2' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-amlogic:
  arm64: dts: meson-g12a: add initial g12a s905d2 SoC DT support
  dt-bindings: arm: amlogic: Add Meson G12A binding
  arm64: dts: meson: Fix erroneous SPI bus warnings

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2018-09-28 12:48:34 +02:00

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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"
Boards with the Amlogic Meson8 SoC shall have the following properties:
Required root node property:
compatible: "amlogic,meson8";
Boards with the Amlogic Meson8b SoC shall have the following properties:
Required root node property:
compatible: "amlogic,meson8b";
Boards with the Amlogic Meson8m2 SoC shall have the following properties:
Required root node property:
compatible: "amlogic,meson8m2";
Boards with the Amlogic Meson GXBaby SoC shall have the following properties:
Required root node property:
compatible: "amlogic,meson-gxbb";
Boards with the Amlogic Meson GXL S905X SoC shall have the following properties:
Required root node property:
compatible: "amlogic,s905x", "amlogic,meson-gxl";
Boards with the Amlogic Meson GXL S905D SoC shall have the following properties:
Required root node property:
compatible: "amlogic,s905d", "amlogic,meson-gxl";
Boards with the Amlogic Meson GXL S805X SoC shall have the following properties:
Required root node property:
compatible: "amlogic,s805x", "amlogic,meson-gxl";
Boards with the Amlogic Meson GXL S905W SoC shall have the following properties:
Required root node property:
compatible: "amlogic,s905w", "amlogic,meson-gxl";
Boards with the Amlogic Meson GXM S912 SoC shall have the following properties:
Required root node property:
compatible: "amlogic,s912", "amlogic,meson-gxm";
Boards with the Amlogic Meson AXG A113D SoC shall have the following properties:
Required root node property:
compatible: "amlogic,a113d", "amlogic,meson-axg";
Boards with the Amlogic Meson G12A S905D2 SoC shall have the following properties:
Required root node property:
compatible: "amlogic,g12a";
Board compatible values (alphabetically, grouped by SoC):
- "geniatech,atv1200" (Meson6)
- "minix,neo-x8" (Meson8)
- "endless,ec100" (Meson8b)
- "hardkernel,odroid-c1" (Meson8b)
- "tronfy,mxq" (Meson8b)
- "tronsmart,mxiii-plus" (Meson8m2)
- "amlogic,p200" (Meson gxbb)
- "amlogic,p201" (Meson gxbb)
- "friendlyarm,nanopi-k2" (Meson gxbb)
- "hardkernel,odroid-c2" (Meson gxbb)
- "nexbox,a95x" (Meson gxbb or Meson gxl s905x)
- "tronsmart,vega-s95-pro", "tronsmart,vega-s95" (Meson gxbb)
- "tronsmart,vega-s95-meta", "tronsmart,vega-s95" (Meson gxbb)
- "tronsmart,vega-s95-telos", "tronsmart,vega-s95" (Meson gxbb)
- "wetek,hub" (Meson gxbb)
- "wetek,play2" (Meson gxbb)
- "amlogic,p212" (Meson gxl s905x)
- "hwacom,amazetv" (Meson gxl s905x)
- "khadas,vim" (Meson gxl s905x)
- "libretech,cc" (Meson gxl s905x)
- "amlogic,p230" (Meson gxl s905d)
- "amlogic,p231" (Meson gxl s905d)
- "amlogic,p241" (Meson gxl s805x)
- "amlogic,p281" (Meson gxl s905w)
- "oranth,tx3-mini" (Meson gxl s905w)
- "amlogic,q200" (Meson gxm s912)
- "amlogic,q201" (Meson gxm s912)
- "khadas,vim2" (Meson gxm s912)
- "kingnovel,r-box-pro" (Meson gxm S912)
- "nexbox,a1" (Meson gxm s912)
- "tronsmart,vega-s96" (Meson gxm s912)
- "amlogic,s400" (Meson axg a113d)
- "amlogic,u200" (Meson g12a s905d2)
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;
};