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Date: Tue, 27 Jan 2015 11:07:39 -0400
From: Eduardo Valentin <edubezval@...il.com>
To: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Cc: linux-pm@...r.kernel.org, Zhang Rui <rui.zhang@...el.com>,
linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
Rob Herring <robh+dt@...nel.org>
Subject: Re: [PATCH] thermal: Fix examples in DT documentation
Hello Srinivas,
On Tue, Jan 27, 2015 at 10:50:47AM +0000, Srinivas Kandagatla wrote:
> There are various issues with the examples in this documentation, some
> of the DT labels are invalid and one of the macro THERMAL_NO_LIMITS
> referenced is not available as well.
>
> As Its highly likely that people would pick some samples from the
> documentation, I though fixing these would be best rather than giving
> starter a challenge to figure out whats going wrong with examples.
>
> This patch attempts to fix such errors in the documentation.
>
> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Thanks for doing this. It's been a while that I want to make these small
fixes in the of thermal example section and I always forget.
Just a minor request in the end:
> ---
> .../devicetree/bindings/thermal/thermal.txt | 44 +++++++++++-----------
> 1 file changed, 22 insertions(+), 22 deletions(-)
>
> diff --git a/Documentation/devicetree/bindings/thermal/thermal.txt b/Documentation/devicetree/bindings/thermal/thermal.txt
> index f5db6b7..97ed14e 100644
> --- a/Documentation/devicetree/bindings/thermal/thermal.txt
> +++ b/Documentation/devicetree/bindings/thermal/thermal.txt
> @@ -251,24 +251,24 @@ ocp {
> };
>
> thermal-zones {
> - cpu-thermal: cpu-thermal {
> + cpu_thermal: cpu-thermal {
> polling-delay-passive = <250>; /* milliseconds */
> polling-delay = <1000>; /* milliseconds */
>
> thermal-sensors = <&bandgap0>;
>
> trips {
> - cpu-alert0: cpu-alert {
> + cpu_alert0: cpu-alert0 {
> temperature = <90000>; /* millicelsius */
> hysteresis = <2000>; /* millicelsius */
> type = "active";
> };
> - cpu-alert1: cpu-alert {
> + cpu_alert1: cpu-alert1 {
> temperature = <100000>; /* millicelsius */
> hysteresis = <2000>; /* millicelsius */
> type = "passive";
> };
> - cpu-crit: cpu-crit {
> + cpu_crit: cpu-crit {
> temperature = <125000>; /* millicelsius */
> hysteresis = <2000>; /* millicelsius */
> type = "critical";
> @@ -277,17 +277,17 @@ thermal-zones {
>
> cooling-maps {
> map0 {
> - trip = <&cpu-alert0>;
> - cooling-device = <&fan0 THERMAL_NO_LIMITS 4>;
> + trip = <&cpu_alert0>;
> + cooling-device = <&fan0 THERMAL_NO_LIMIT 4>;
> };
> map1 {
> - trip = <&cpu-alert1>;
> - cooling-device = <&fan0 5 THERMAL_NO_LIMITS>;
> + trip = <&cpu_alert1>;
> + cooling-device = <&fan0 5 THERMAL_NO_LIMIT>;
> };
> map2 {
> - trip = <&cpu-alert1>;
> + trip = <&cpu_alert1>;
> cooling-device =
> - <&cpu0 THERMAL_NO_LIMITS THERMAL_NO_LIMITS>;
> + <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
> };
> };
> };
> @@ -298,13 +298,13 @@ used to monitor the zone 'cpu-thermal' using its sole sensor. A fan
> device (fan0) is controlled via I2C bus 1, at address 0x48, and has ten
> different cooling states 0-9. It is used to remove the heat out of
> the thermal zone 'cpu-thermal' using its cooling states
> -from its minimum to 4, when it reaches trip point 'cpu-alert0'
> +from its minimum to 4, when it reaches trip point 'cpu_alert0'
> at 90C, as an example of active cooling. The same cooling device is used at
> -'cpu-alert1', but from 5 to its maximum state. The cpu@0 device is also
> +'cpu_alert1', but from 5 to its maximum state. The cpu@0 device is also
> linked to the same thermal zone, 'cpu-thermal', as a passive cooling device,
> -using all its cooling states at trip point 'cpu-alert1',
> +using all its cooling states at trip point 'cpu_alert1',
> which is a trip point at 100C. On the thermal zone 'cpu-thermal', at the
> -temperature of 125C, represented by the trip point 'cpu-crit', the silicon
> +temperature of 125C, represented by the trip point 'cpu_crit', the silicon
> is not reliable anymore.
>
> (b) - IC with several internal sensors
> @@ -329,7 +329,7 @@ ocp {
> };
>
> thermal-zones {
> - cpu-thermal: cpu-thermal {
> + cpu_thermal: cpu-thermal {
> polling-delay-passive = <250>; /* milliseconds */
> polling-delay = <1000>; /* milliseconds */
>
> @@ -338,12 +338,12 @@ thermal-zones {
>
> trips {
> /* each zone within the SoC may have its own trips */
> - cpu-alert: cpu-alert {
> + cpu_alert: cpu-alert {
> temperature = <100000>; /* millicelsius */
> hysteresis = <2000>; /* millicelsius */
> type = "passive";
> };
> - cpu-crit: cpu-crit {
> + cpu_crit: cpu-crit {
> temperature = <125000>; /* millicelsius */
> hysteresis = <2000>; /* millicelsius */
> type = "critical";
> @@ -365,12 +365,12 @@ thermal-zones {
>
> trips {
> /* each zone within the SoC may have its own trips */
> - gpu-alert: gpu-alert {
> + gpu_alert: gpu-alert {
> temperature = <90000>; /* millicelsius */
> hysteresis = <2000>; /* millicelsius */
> type = "passive";
> };
> - gpu-crit: gpu-crit {
> + gpu_crit: gpu-crit {
> temperature = <105000>; /* millicelsius */
> hysteresis = <2000>; /* millicelsius */
> type = "critical";
> @@ -392,12 +392,12 @@ thermal-zones {
>
> trips {
> /* each zone within the SoC may have its own trips */
> - dsp-alert: gpu-alert {
> + dsp_alert: gpu-alert {
I suppose the original text has a typo, it should be:
+ dsp_alert: dsp-alert {
> temperature = <90000>; /* millicelsius */
> hysteresis = <2000>; /* millicelsius */
> type = "passive";
> };
> - dsp-crit: gpu-crit {
> + dsp_crit: gpu-crit {
> temperature = <135000>; /* millicelsius */
> hysteresis = <2000>; /* millicelsius */
> type = "critical";
> @@ -457,7 +457,7 @@ ocp {
> };
>
> thermal-zones {
> - cpu-thermal: cpu-thermal {
> + cpu_thermal: cpu-thermal {
> polling-delay-passive = <250>; /* milliseconds */
> polling-delay = <1000>; /* milliseconds */
>
While here, can you please include in your patch fixes for remaining
examples? From quick look, 'board-thermal', 'adc-dummy', and
'dsp-thermal' are occurrences of the same problem you fixing in other
parts of the file.
> --
> 1.9.1
>
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