Re: [PATCH 1/2] dt-bindings: document Rockchip thermal

[Caesar Wang]

Heiko,
å 2014/8/24 7:03, Heiko StÃbner åé:
> Hi Caesar,
>
> Am Samstag, 23. August 2014, 08:15:33 schrieb Caesar Wang:
> > This add the necessary binding documentation for the thermal
> > found on Rockchip SoCs
> >
> > Signed-off-by: zhaoyifeng <zyf@xxxxxxxxxxxxxx>
> > Signed-off-by: Caesar Wang <caesar.wang@xxxxxxxxxxxxxx>
> > ---
> >   .../bindings/thermal/rockchip-thermal.txt          |   33
> > ++++++++++++++++++++ 1 file changed, 33 insertions(+)
> >   create mode 100644
> > Documentation/devicetree/bindings/thermal/rockchip-thermal.txt
> >
> > diff --git a/Documentation/devicetree/bindings/thermal/rockchip-thermal.txt
> > b/Documentation/devicetree/bindings/thermal/rockchip-thermal.txt new file
> > mode 100644
> > index 0000000..b556eae
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/thermal/rockchip-thermal.txt
> > @@ -0,0 +1,33 @@
> > +* Temperature Sensor ADC (TSADC) on rockchip SoCs
> > +
> > +Required properties:
> > +- compatible : "rockchip,rk3288-tsadc"
> > +- reg : physical base address of the controller and length of memory mapped
> > +  region.
> > +- interrupts : The interrupt number to the cpu. The interrupt specifier
> > format +  depends on the interrupt controller.
> > +- clocks : Must contain an entry for each entry in clock-names.
> > +- clock-names : Shall be "tsadc_clk" for the transfer-clock, and
> > "tsadc_pclk" for +    the peripheral clock.
> > +Optional properties:
> > +- clock-frequency : Thermal sensor's clock frequency.
> see comment in patch2, this should probably use assigned-rate if at all
> necessary (and the assigned-rate is not necessary to document here)
>
>
> > +- pinctrl-names : Should contain only one value - "default".
> > +- pinctrl-0 : Should contain only one value - &tsadc_int.
> in general pinctrl settings are just board-specific settings and do not
> need to be part of the binding documentation.
> And in this case, are you sure that the tsadc uses some pin as interrupt?
> Because in the TRM the TS-ADC interrupt is number 69 of the GIC itself
> and not some pin accessible via pinctrl.
>
>
> > +- passive-temp : Temperature of trip 0.
> > +- critical-temp : Temperature of trip 1.
> > +- force-shut-temp : Temperature of force shut down.
> please use the generic trip-points described in
> Documentation/devicetree/bindings/thermal/thermal.txt
> for this, instead of defining new properties

There are have 4 trip-points mode in thermal.txt.
It's ACTIVEãPASSAIVEã HOT and  CRITICAL.

Do you have some suggestion for fix it if I need add shut-temp mode ?

- Caesar
> Heiko
>
> > +Example:
> > +
> > +tsadc: tsadc@ff280000 {
> > +	compatible = "rockchip,rk3288-tsadc";
> > +	reg = <0xff280000 0x100>;
> > +	interrupts = <GIC_SPI 37 IRQ_TYPE_LEVEL_HIGH>;
> > +	clock-frequency = <10000>;
> > +	clocks = <&cru SCLK_TSADC>, <&cru PCLK_TSADC>;
> > +	clock-names = "tsadc_clk", "tsadc_pclk";
> > +	pinctrl-names = "default";
> > +	pinctrl-1 = <&tsadc_int>;
> > +	passive-temp = <80>;
> > +	critical-temp = <100>;
> > +	force-shut-temp = <120>;
> > +};

--
Best regards,
Caesar


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