Hi! > Signed-off-by: Jae Hyun Yoo <[email protected]> > --- > .../devicetree/bindings/peci/peci-aspeed.txt | 73 > ++++++++++++++++++++++ > 1 file changed, 73 insertions(+) > create mode 100644 Documentation/devicetree/bindings/peci/peci-aspeed.txt > > diff --git a/Documentation/devicetree/bindings/peci/peci-aspeed.txt > b/Documentation/devicetree/bindings/peci/peci-aspeed.txt > new file mode 100644 > index 000000000000..8a86f346d550 > --- /dev/null > +++ b/Documentation/devicetree/bindings/peci/peci-aspeed.txt > @@ -0,0 +1,73 @@ > +Device tree configuration for PECI buses on the AST24XX and AST25XX SoCs.
Are these SoCs x86-based?
> +Required properties:
> +- compatible
> + "aspeed,ast2400-peci" or "aspeed,ast2500-peci"
> + - aspeed,ast2400-peci: Aspeed AST2400 family PECI controller
> + - aspeed,ast2500-peci: Aspeed AST2500 family PECI controller
> +
> +- reg
> + Should contain PECI registers location and length.
Other dts documents put it on one line, reg: Should contain ...
> +- clock_frequency
> + Should contain the operation frequency of PECI hardware module.
> + 187500 ~ 24000000
specify this is Hz?
> +- rd-sampling-point
> + Read sampling point selection. The whole period of a bit time will be
> + divided into 16 time frames. This value will determine which time frame
> + this controller will sample PECI signal for data read back. Usually in
> + the middle of a bit time is the best.
English? "This value will determine when this controller"?
> + 0 ~ 15 (default: 8)
> +
> +- cmd_timeout_ms
> + Command timeout in units of ms.
> + 1 ~ 60000 (default: 1000)
> +
> +Example:
> + peci: peci@1e78b000 {
> + compatible = "simple-bus";
> + #address-cells = <1>;
> + #size-cells = <1>;
> + ranges = <0x0 0x1e78b000 0x60>;
> +
> + peci0: peci-bus@0 {
> + compatible = "aspeed,ast2500-peci";
> + reg = <0x0 0x60>;
> + #address-cells = <1>;
> + #size-cells = <0>;
> + interrupts = <15>;
> + clocks = <&clk_clkin>;
> + clock-frequency = <24000000>;
> + msg-timing-nego = <1>;
> + addr-timing-nego = <1>;
> + rd-sampling-point = <8>;
> + cmd-timeout-ms = <1000>;
> + };
> + };
> \ No newline at end of file
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