Re: [PATCH 1/3] dt-bindings: thermal: Add binding document for SR thermal

From: Rob Herring
Date: Thu May 31 2018 - 12:48:33 EST


On Mon, May 28, 2018 at 11:11:22AM +0530, Srinath Mannam wrote:
> From: Pramod Kumar <pramod.kumar@xxxxxxxxxxxx>
>
> Add binding document for supported thermal implementation
> in Stingray.
>
> Signed-off-by: Pramod Kumar <pramod.kumar@xxxxxxxxxxxx>
> Reviewed-by: Ray Jui <ray.jui@xxxxxxxxxxxx>
> Reviewed-by: Scott Branden <scott.branden@xxxxxxxxxxxx>
> Reviewed-by: Srinath Mannam <srinath.mannam@xxxxxxxxxxxx>
> ---
> .../bindings/thermal/brcm,sr-thermal.txt | 45 ++++++++++++++++++++++
> 1 file changed, 45 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/thermal/brcm,sr-thermal.txt
>
> diff --git a/Documentation/devicetree/bindings/thermal/brcm,sr-thermal.txt b/Documentation/devicetree/bindings/thermal/brcm,sr-thermal.txt
> new file mode 100644
> index 0000000..33f9e11
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/thermal/brcm,sr-thermal.txt
> @@ -0,0 +1,45 @@
> +* Broadcom Stingray Thermal
> +
> +This binding describes thermal sensors that is part of Stingray SoCs.
> +
> +Required properties:
> +- compatible : Must be "brcm,sr-thermal"
> +- reg : memory where tmon data will be available.

What type of memory is this?

> +
> +Example:
> + tmons {
> + compatible = "simple-bus";
> + #address-cells = <1>;
> + #size-cells = <1>;
> + ranges;
> +
> + tmon_ihost0: thermal@8f100000 {
> + compatible = "brcm,sr-thermal";
> + reg = <0x8f100000 0x4>;
> + };

Convince me that you need a node per register. This can all be
accomplished with a single node and either a single reg entry or a
series of reg entries.

> +
> + tmon_ihost1: thermal@8f100004 {
> + compatible = "brcm,sr-thermal";
> + reg = <0x8f100004 0x4>;
> + };
> +
> + tmon_ihost2: thermal@8f100008 {
> + compatible = "brcm,sr-thermal";
> + reg = <0x8f100008 0x4>;
> + };
> +
> + tmon_ihost3: thermal@8f10000c {
> + compatible = "brcm,sr-thermal";
> + reg = <0x8f10000c 0x4>;
> + };
> +
> + tmon_crmu: thermal@8f100010 {
> + compatible = "brcm,sr-thermal";
> + reg = <0x8f100010 0x4>;
> + };
> +
> + tmon_nitro: thermal@8f100014 {
> + compatible = "brcm,sr-thermal";
> + reg = <0x8f100014 0x4>;
> + };
> + };
> --
> 2.7.4
>