On Mon 09 Jul 04:43 PDT 2018, Amit Kucheria wrote:
> We want to create common code for v2 of the TSENS IP block that is used in
> a large number of Qualcomm SoCs. "qcom,tsens-v2" should be able to handle
> most of the common functionality start with a common get_temp() function.
>
> It is also necessary to split out the memory regions for the TM and SROT
> register banks because their offsets are not constant across SoC families.
>
> Signed-off-by: Amit Kucheria <amit.kucheria@xxxxxxxxxx>
Reviewed-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
Regards,
Bjorn
> ---
> .../devicetree/bindings/thermal/qcom-tsens.txt | 25 +++++++++++++++++-----
> 1 file changed, 20 insertions(+), 5 deletions(-)
>
> diff --git a/Documentation/devicetree/bindings/thermal/qcom-tsens.txt b/Documentation/devicetree/bindings/thermal/qcom-tsens.txt
> index 06195e8..8f963b1 100644
> --- a/Documentation/devicetree/bindings/thermal/qcom-tsens.txt
> +++ b/Documentation/devicetree/bindings/thermal/qcom-tsens.txt
> @@ -1,10 +1,16 @@
> * QCOM SoC Temperature Sensor (TSENS)
>
> Required properties:
> -- compatible :
> - - "qcom,msm8916-tsens" : For 8916 Family of SoCs
> - - "qcom,msm8974-tsens" : For 8974 Family of SoCs
> - - "qcom,msm8996-tsens" : For 8996 Family of SoCs
> +- compatible:
> + Must be one of the following:
> + - "qcom,msm8916-tsens" (MSM8916)
> + - "qcom,msm8974-tsens" (MSM8974)
> + - "qcom,msm8996-tsens" (MSM8996)
> + - "qcom,msm8998-tsens", "qcom,tsens-v2" (MSM8998)
> + - "qcom,sdm845-tsens", "qcom,tsens-v2" (SDM845)
> + The generic "qcom,tsens-v2" property must be used as a fallback for any SoC with
> + version 2 of the TSENS IP. MSM8996 is the only exception beacause the generic
> + property did not exist when support was added.
>
> - reg: Address range of the thermal registers
> - #thermal-sensor-cells : Should be 1. See ./thermal.txt for a description.
> @@ -12,7 +18,7 @@ Required properties:
> - Refer to Documentation/devicetree/bindings/nvmem/nvmem.txt to know how to specify
> nvmem cells
>
> -Example:
> +Example 1 (legacy support before a fallback tsens-v2 propoerty was introduced):
> tsens: thermal-sensor@900000 {
> compatible = "qcom,msm8916-tsens";
> reg = <0x4a8000 0x2000>;
> @@ -20,3 +26,12 @@ tsens: thermal-sensor@900000 {
> nvmem-cell-names = "caldata", "calsel";
> #thermal-sensor-cells = <1>;
> };
> +
> +Example 2 (for any platform containing v2 of the TSENS IP):
> +tsens0: tsens@c222000 {
> + compatible = "qcom,sdm845-tsens", "qcom,tsens-v2";
> + reg = <0xc263000 0x1ff>, /* TM */
> + <0xc222000 0x1ff>; /* SROT */
> + #qcom,sensors = <13>;
> + #thermal-sensor-cells = <1>;
> + };
> --
> 2.7.4
>
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