| Message ID | 20170923141403.20882-2-martin.blumenstingl@googlemail.com |
|---|---|
| State | Not Applicable, archived |
| Headers | show |
| Series | soc: amlogic: Add Meson6/8/8b SoC Information driver | expand |
On Sat, Sep 23, 2017 at 04:14:01PM +0200, Martin Blumenstingl wrote: > 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> > --- > .../devicetree/bindings/arm/amlogic/analog-top.txt | 20 ++++++++++++++++++++ > .../devicetree/bindings/arm/amlogic/assist.txt | 17 +++++++++++++++++ > .../devicetree/bindings/arm/amlogic/bootrom.txt | 17 +++++++++++++++++ > 3 files changed, 54 insertions(+) > create mode 100644 Documentation/devicetree/bindings/arm/amlogic/analog-top.txt > create mode 100644 Documentation/devicetree/bindings/arm/amlogic/assist.txt > create mode 100644 Documentation/devicetree/bindings/arm/amlogic/bootrom.txt Acked-by: Rob Herring <robh@kernel.org> -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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>; + }; diff --git a/Documentation/devicetree/bindings/arm/amlogic/assist.txt b/Documentation/devicetree/bindings/arm/amlogic/assist.txt new file mode 100644 index 000000000000..7656812b67b9 --- /dev/null +++ b/Documentation/devicetree/bindings/arm/amlogic/assist.txt @@ -0,0 +1,17 @@ +Amlogic Meson6/Meson8/Meson8b assist registers: +----------------------------------------------- + +The assist registers contain basic information about the SoC, +for example the encoded SoC part number. + +Required properties: +- reg: the register range of the assist registers +- compatible: should be "amlogic,meson-mx-assist" along with "syscon" + + +Example: + + assist: assist@7c00 { + compatible = "amlogic,meson-mx-assist", "syscon"; + reg = <0x7c00 0x200>; + }; diff --git a/Documentation/devicetree/bindings/arm/amlogic/bootrom.txt b/Documentation/devicetree/bindings/arm/amlogic/bootrom.txt new file mode 100644 index 000000000000..407e27f230ab --- /dev/null +++ b/Documentation/devicetree/bindings/arm/amlogic/bootrom.txt @@ -0,0 +1,17 @@ +Amlogic Meson6/Meson8/Meson8b bootrom: +-------------------------------------- + +The bootrom register area can be used to access SoC specific +information, such as the "misc version". + +Required properties: +- reg: the register range of the bootrom registers +- compatible: should be "amlogic,meson-mx-bootrom" along with "syscon" + + +Example: + + bootrom: bootrom@d9040000 { + compatible = "amlogic,meson-mx-bootrom", "syscon"; + reg = <0xd9040000 0x10000>; + };
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> --- .../devicetree/bindings/arm/amlogic/analog-top.txt | 20 ++++++++++++++++++++ .../devicetree/bindings/arm/amlogic/assist.txt | 17 +++++++++++++++++ .../devicetree/bindings/arm/amlogic/bootrom.txt | 17 +++++++++++++++++ 3 files changed, 54 insertions(+) create mode 100644 Documentation/devicetree/bindings/arm/amlogic/analog-top.txt create mode 100644 Documentation/devicetree/bindings/arm/amlogic/assist.txt create mode 100644 Documentation/devicetree/bindings/arm/amlogic/bootrom.txt