On 02.07.2015 14:37, Chanwoo Choi wrote:
> This patch add the cooling device to control the overheating issue on
> Exynos3250-based Rinato/Monk board.
>
> Cc: Kukjin Kim <[email protected]>
> Cc: Krzysztof Kozlowski <[email protected]>
> Signed-off-by: Chanwoo Choi <[email protected]>
> Acked-by: Kyungmin Park <[email protected]>
> ---
> Depends on:
> This patch needs the cpufreq support of Exynos3250 SoC. So, this patch has the
> dependency on patch[1] which support the generic cpufreq for Exynos3250 SoC.
> [1] https://lkml.org/lkml/2015/7/1/696
> : [PATCH v6 0/3] cpufreq: Use cpufreq-dt driver for Exynos3250
>
> arch/arm/boot/dts/exynos3250-monk.dts | 15 +++++++++++++++
> arch/arm/boot/dts/exynos3250-rinato.dts | 15 +++++++++++++++
> arch/arm/boot/dts/exynos3250.dtsi | 1 +
> 3 files changed, 31 insertions(+)
>
> diff --git a/arch/arm/boot/dts/exynos3250-monk.dts
> b/arch/arm/boot/dts/exynos3250-monk.dts
> index 7863265d4868..540a0adf2be6 100644
> --- a/arch/arm/boot/dts/exynos3250-monk.dts
> +++ b/arch/arm/boot/dts/exynos3250-monk.dts
> @@ -116,6 +116,21 @@
> min-microvolt = <1100000>;
> max-microvolt = <2700000>;
> };
> +
> + thermal-zones {
> + cpu_thermal: cpu-thermal {
> + cooling-maps {
> + map0 {
> + /* Correspond to 500MHz at freq_table */
> + cooling-device = <&cpu0 5 5>;
> + };
> + map1 {
> + /* Correspond to 200MHz at freq_table */
> + cooling-device = <&cpu0 8 8>;
> + };
> + };
> + };
> + };
> };
>
> &adc {
> diff --git a/arch/arm/boot/dts/exynos3250-rinato.dts
> b/arch/arm/boot/dts/exynos3250-rinato.dts
> index ddd7ac283045..0e62a6435e07 100644
> --- a/arch/arm/boot/dts/exynos3250-rinato.dts
> +++ b/arch/arm/boot/dts/exynos3250-rinato.dts
> @@ -107,6 +107,21 @@
> min-microvolt = <1100000>;
> max-microvolt = <2700000>;
> };
> +
> + thermal-zones {
> + cpu_thermal: cpu-thermal {
> + cooling-maps {
> + map0 {
> + /* Corresponds to 500MHz */
> + cooling-device = <&cpu0 5 5>;
> + };
> + map1 {
> + /* Corresponds to 200MHz */
> + cooling-device = <&cpu0 8 8>;
> + };
> + };
> + };
> + };
> };
>
> &adc {
> diff --git a/arch/arm/boot/dts/exynos3250.dtsi
> b/arch/arm/boot/dts/exynos3250.dtsi
> index e0f3b2ed41a3..a4931b660ddb 100644
> --- a/arch/arm/boot/dts/exynos3250.dtsi
> +++ b/arch/arm/boot/dts/exynos3250.dtsi
> @@ -55,6 +55,7 @@
> clock-frequency = <1000000000>;
> clocks = <&cmu CLK_ARM_CLK>;
> clock-names = "cpu";
> + #cooling-cells = <2>;
>
Don't you need also cooling-{min,max}-state properties?
Best regards,
Krzysztof
> operating-points = <
> 1000000 1150000
>
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