Am Dienstag, 9. September 2014, 10:27:17 schrieb Zhang Rui:

On Thu, 2014-09-04 at 09:02 +0800, Caesar Wang wrote:

quoted

在 2014年09月03日 16:07, Heiko Stübner 写道:

quoted

Am Mittwoch, 3. September 2014, 10:10:37 schrieb Caesar Wang:

quoted

This add the necessary binding documentation for the thermal
found on Rockchip SoCs

Signed-off-by: zhaoyifeng <redacted>
Signed-off-by: Caesar Wang <redacted>
---

  .../devicetree/bindings/thermal/rockchip-thermal.txt | 20

++++++++++++++++++++ 1 file changed, 20 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..1ed4d4c

--- /dev/null
+++ b/Documentation/devicetree/bindings/thermal/rockchip-thermal.txt

@@ -0,0 +1,20 @@
+* 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" for the converter-clock, and
"apb_pclk" for +	       the peripheral clock.

You're using the passive-temp, critical-temp and force-shut-temp
properties in your driver without declaring them here.

frankly,the about are need be declared. but  there are 4 types[0] for
trip in thermal framework,
there is no force-shut for me. So I want to change it three additional
properties in [PATCH V4 4/4],


[0]
{

     THERMAL_TRIP_CRITICAL,
     THERMAL_TRIP_HOT,
     THERMAL_TRIP_PASSIVE,
     THERMAL_TRIP_ACTIVE,

}

this sounds reasonable to me.

quoted

quoted

But more importantly, please use the generic trip-points for this. I
guess it shouldn't be a problem to introduce a "forced-shutdown"
trippoint [0] for the additional trip-point you have - thermal
maintainers, please shout if I'm wrong :-)

what is the difference between a critical trip point and a
"forced-shutdown" trip point?
Thermal core will do a shutdown in case the critical trip point is
triggered.

The forced-shutdown is where the thermal controller is supposed to also do a 
shutdown in hardware. As you said the thermal core will also shutdown at the 
critical trip point, I guess we could map Caesar's value like

trip-point		tsadc
critical		forced-shutdown (the 120 degrees in patch 4)
hot			critical (the 100 degrees)
...

thanks,
rui

quoted

It's a good option.
I can send a patch,but I don't know whether the thermal maintainers will
accept it.

Maybe,they have a better way to suggest it.:-)


PS:I will sent a new patch If I still have no received their suggestions
in two days.

quoted

Heiko


[0] in a separate patch, changing
- thermal_trip_type enum in include/linux/thermal.h
- trip_types mapping in drivers/thermal/of-thermal.c
- Documentation/devicetree/bindings/thermal/thermal.txt

quoted

+
+Example:
+tsadc: tsadc@ff280000 {
+	compatible = "rockchip,rk3288-tsadc";
+	reg = <0xff280000 0x100>;
+	interrupts = <GIC_SPI 37 IRQ_TYPE_LEVEL_HIGH>;
+	clocks = <&cru SCLK_TSADC>, <&cru PCLK_TSADC>;
+	clock-names = "tsadc", "apb_pclk";
+};

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