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author | Martin Blumenstingl <martin.blumenstingl@googlemail.com> | 2017-09-23 16:14:01 +0200 |
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committer | Kevin Hilman <khilman@baylibre.com> | 2017-10-06 15:36:37 -0700 |
commit | aee2828ccb3444ad1551e8528a868ab49ef447de (patch) | |
tree | fd9cce29498820d5bc234b8fce761faf1fe4c2c1 /Documentation/devicetree/bindings/arm/amlogic/analog-top.txt | |
parent | ARM: dts: meson: fixing USB support on Meson6, Meson8 and Meson8b (diff) | |
download | linux-dev-aee2828ccb3444ad1551e8528a868ab49ef447de.tar.xz linux-dev-aee2828ccb3444ad1551e8528a868ab49ef447de.zip |
dt-bindings: Amlogic: add documentation for the SoC info register areas
There are three register areas which contain information about the SoC
version and revision:
- the assist registers contain the SoC's "major version" which encodes
the SoC generation and part number. this is available on Meson6,
Meson8 and Meson8b SoCs.
- the bootrom register contains at least the SoCs "misc version". this
is avilable on Meson6, Meson8 and Meson8b
- the analog top registers contain information about the SoC revision.
this is only available on Meson8 and Meson8b
Not much else is currently known about these registers.
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
Diffstat (limited to 'Documentation/devicetree/bindings/arm/amlogic/analog-top.txt')
-rw-r--r-- | Documentation/devicetree/bindings/arm/amlogic/analog-top.txt | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/arm/amlogic/analog-top.txt b/Documentation/devicetree/bindings/arm/amlogic/analog-top.txt new file mode 100644 index 000000000000..101dc21014ec --- /dev/null +++ b/Documentation/devicetree/bindings/arm/amlogic/analog-top.txt @@ -0,0 +1,20 @@ +Amlogic Meson8 and Meson8b "analog top" registers: +-------------------------------------------------- + +The analog top registers contain information about the so-called +"metal revision" (which encodes the "minor version") of the SoC. + +Required properties: +- reg: the register range of the analog top registers +- compatible: depending on the SoC this should be one of: + - "amlogic,meson8-analog-top" + - "amlogic,meson8b-analog-top" + along with "syscon" + + +Example: + + analog_top: analog-top@81a8 { + compatible = "amlogic,meson8-analog-top", "syscon"; + reg = <0x81a8 0x14>; + }; |