Hi Martin,
On 8/3/19 8:29 PM, Martin Blumenstingl wrote:
> Hi Guillaume,
>
> On Wed, Jul 31, 2019 at 5:36 PM Guillaume La Roque
> <glaroque@xxxxxxxxxxxx> wrote:
>> Add minimal thermal zone for DDR and CPU sensor
> so high DDR (controller?) temperatures will throttle Mali and high PLL
> temperatures will throttle the CPU?
> to get things started I'm fine with this, but I think it should be
> mentioned here
i will add in commit description
>
>> Signed-off-by: Guillaume La Roque <glaroque@xxxxxxxxxxxx>
>> ---
>> .../boot/dts/amlogic/meson-g12a-sei510.dts | 56 +++++++++++++++++++
>> 1 file changed, 56 insertions(+)
>>
>> diff --git a/arch/arm64/boot/dts/amlogic/meson-g12a-sei510.dts b/arch/arm64/boot/dts/amlogic/meson-g12a-sei510.dts
>> index 979449968a5f..2c16a2cba0a3 100644
>> --- a/arch/arm64/boot/dts/amlogic/meson-g12a-sei510.dts
>> +++ b/arch/arm64/boot/dts/amlogic/meson-g12a-sei510.dts
>> @@ -10,6 +10,7 @@
>> #include <dt-bindings/input/input.h>
>> #include <dt-bindings/gpio/meson-g12a-gpio.h>
>> #include <dt-bindings/sound/meson-g12a-tohdmitx.h>
>> +#include <dt-bindings/thermal/thermal.h>
>>
>> / {
>> compatible = "seirobotics,sei510", "amlogic,g12a";
>> @@ -33,6 +34,53 @@
>> ethernet0 = ðmac;
>> };
>>
>> + thermal-zones {
>> + cpu-thermal {
>> + polling-delay = <1000>;
>> + polling-delay-passive = <100>;
>> + thermal-sensors = <&cpu_temp>;
>> +
>> + trips {
>> + cpu_critical: cpu-critical {
>> + temperature = <110000>; /* millicelsius */
>> + hysteresis = <2000>; /* millicelsius */
>> + type = "critical";
>> + };
>> + };
>> +
>> + cooling-maps {
>> + map {
>> + trip = <&cpu_critical>;
>> + cooling-device = <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
>> + <&cpu1 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
>> + <&cpu2 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
>> + <&cpu3 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
>> + };
>> + };
>> + };
>> +
>> + ddr-thermal {
>> + polling-delay = <1000>;
>> + polling-delay-passive = <100>;
>> + thermal-sensors = <&ddr_temp>;
>> +
>> + trips {
>> + ddr_critical: ddr-critical {
>> + temperature = <110000>; /* millicelsius */
>> + hysteresis = <2000>; /* millicelsius */
>> + type = "critical";
>> + };
>> + };
>> +
>> + cooling-maps {
>> + map {
>> + trip = <&ddr_critical>;
>> + cooling-device = <&mali THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
>> + };
>> + };
>> + };
>> + };
>> +
>> mono_dac: audio-codec-0 {
>> compatible = "maxim,max98357a";
>> #sound-dai-cells = <0>;
>> @@ -321,6 +369,7 @@
>> operating-points-v2 = <&cpu_opp_table>;
>> clocks = <&clkc CLKID_CPU_CLK>;
>> clock-latency = <50000>;
>> + #cooling-cells = <2>;
>> };
>>
>> &cpu1 {
>> @@ -328,6 +377,7 @@
>> operating-points-v2 = <&cpu_opp_table>;
>> clocks = <&clkc CLKID_CPU_CLK>;
>> clock-latency = <50000>;
>> + #cooling-cells = <2>;
>> };
>>
>> &cpu2 {
>> @@ -335,6 +385,7 @@
>> operating-points-v2 = <&cpu_opp_table>;
>> clocks = <&clkc CLKID_CPU_CLK>;
>> clock-latency = <50000>;
>> + #cooling-cells = <2>;
>> };
>>
>> &cpu3 {
>> @@ -342,6 +393,7 @@
>> operating-points-v2 = <&cpu_opp_table>;
>> clocks = <&clkc CLKID_CPU_CLK>;
>> clock-latency = <50000>;
>> + #cooling-cells = <2>;
>> };
>>
>> &cvbs_vdac_port {
>> @@ -368,6 +420,10 @@
>> status = "okay";
>> };
>>
>> +&mali {
>> + #cooling-cells = <2>;
>> +};
> is there something device-specific in this patch? I'm wondering
> whether we can move all of this go g12a.dtsi to simplify maintenance
> in the future
this is depending of each board. actually it's same on all
but if a new one have a fan this value should be different or not.
>
>
> Martin
thanks,
Guillaume
