Quoting Lina Iyer (2018-05-02 12:37:41)
> diff --git a/Documentation/devicetree/bindings/soc/qcom/rpmh-rsc.txt b/Documentation/devicetree/bindings/soc/qcom/rpmh-rsc.txt
> new file mode 100644
> index 000000000000..950d56325284
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/soc/qcom/rpmh-rsc.txt
> @@ -0,0 +1,132 @@
[...]
> +
> +- qcom,drv-id:
> + Usage: required
> + Value type: <u32>
> + Definition: The id of the DRV in the RSC block that will be used by
> + this controller.
used by the OS? instead of by this controller?
> +
> +- qcom,tcs-config:
> + Usage: required
> + Value type: <prop-encoded-array>
> + Definition: The tuple defining the configuration of TCS.
> + Must have 2 cells which describe each TCS type.
> + <type number_of_tcs>.
> + The order of the TCS must match the hardware
> + configuration.
> + - Cell #1 (TCS Type): TCS types to be specified -
> + SLEEP_TCS
> + WAKE_TCS
> + ACTIVE_TCS
> + CONTROL_TCS
> + - Cell #2 (Number of TCS): <u32>
> +
> +- label:
> + Usage: optional
> + Value type: <string>
> + Definition: Name for the RSC. The name would be used in trace logs.
> +
> +Drivers that want to use the RSC to communicate with RPMH must specify their
> +bindings as child nodes of the RSC controllers they wish to communicate with.
> +
> +Example 1:
> +
> +For a TCS whose RSC base address is is 0x179C0000 and is at a DRV id of 2, the
> +register offsets for DRV2 start at 0D00, the register calculations are like
0xd00? Instead of what looks like octal.
> +this -
> +DRV0: 0x179C0000
> +DRV2: 0x179C0000 + 0x10000 = 0x179D0000
> +DRV2: 0x179C0000 + 0x10000 * 2 = 0x179E0000
> +TCS-OFFSET: 0xD00
> +
> + apps_rsc: rsc@179c0000 {
> + label = "apps_rsc";
> + compatible = "qcom,rpmh-rsc";
> + reg = <0x179c0000 0x10000>, <0x179d0000 0x10000>,
> + <0x179e0000 0x10000>, <0xd00 0>;
> + reg-names = "drv-0", "drv-1", "drv-2", "tcs-offset";
tcs-offset should be a property, not a reg property value.
> + interrupts = <GIC_SPI 5 IRQ_TYPE_LEVEL_HIGH>;
There should be three interrupts? Not 1?
> + qcom,drv-id = <2>;
> + qcom,tcs-config = <SLEEP_TCS 3>,
> + <WAKE_TCS 3>,
> + <ACTIVE_TCS 2>,
> + <CONTROL_TCS 1>;
> + };
> +
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