Dne torek, 18. februar 2025 ob 03:06:29 Srednjeevropski standardni čas je Alex Studer napisal(a):
> The sun20i THS (built in CPU thermal sensor) is supported in code, but
> was never added to the device tree. So, add it to the device tree,
> along with a thermal zone for the CPU.
>
> Signed-off-by: Alex Studer <alex@xxxxxxxxxx>
> ---
> arch/riscv/boot/dts/allwinner/sun20i-d1s.dtsi | 31 +++++++++++++++++++
> .../boot/dts/allwinner/sunxi-d1s-t113.dtsi | 16 ++++++++++
> 2 files changed, 47 insertions(+)
>
> diff --git a/arch/riscv/boot/dts/allwinner/sun20i-d1s.dtsi b/arch/riscv/boot/dts/allwinner/sun20i-d1s.dtsi
> index 6367112e6..bdde82aa8 100644
> --- a/arch/riscv/boot/dts/allwinner/sun20i-d1s.dtsi
> +++ b/arch/riscv/boot/dts/allwinner/sun20i-d1s.dtsi
> @@ -3,6 +3,8 @@
>
> #define SOC_PERIPHERAL_IRQ(nr) (nr + 16)
>
> +#include <dt-bindings/thermal/thermal.h>
Put above line on top (before SOC_PERIPHERAL_IRQ()).
> +
> #include "sunxi-d1s-t113.dtsi"
>
> / {
> @@ -115,4 +117,33 @@ pmu {
> <0x00000000 0x0000000e 0xffffffff 0xffffffff 0x00010000>,
> <0x00000000 0x0000000f 0xffffffff 0xffffffff 0x00020000>;
> };
> +
> + thermal-zones {
> + cpu-thermal {
> + polling-delay-passive = <0>;
> + polling-delay = <0>;
> + thermal-sensors = <&ths>;
> +
> + cooling-maps {
> + map0 {
> + trip = <&cpu_alert>;
> + cooling-device = <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
> + };
> + };
> +
> + trips {
> + cpu_alert: cpu-alert {
> + temperature = <85000>;
> + hysteresis = <2000>;
> + type = "passive";
> + };
> +
> + cpu-crit {
> + temperature = <100000>;
> + hysteresis = <0>;
> + type = "critical";
> + };
Where do those limits come from?
> + };
> + };
> + };
> };
> diff --git a/arch/riscv/boot/dts/allwinner/sunxi-d1s-t113.dtsi b/arch/riscv/boot/dts/allwinner/sunxi-d1s-t113.dtsi
> index e4175adb0..fcfcaf06c 100644
> --- a/arch/riscv/boot/dts/allwinner/sunxi-d1s-t113.dtsi
> +++ b/arch/riscv/boot/dts/allwinner/sunxi-d1s-t113.dtsi
> @@ -426,6 +426,10 @@ sid: efuse@3006000 {
> reg = <0x3006000 0x1000>;
> #address-cells = <1>;
> #size-cells = <1>;
> +
> + ths_calibration: thermal-sensor-calibration@14 {
> + reg = <0x14 0x8>;
> + };
> };
>
> crypto: crypto@3040000 {
> @@ -934,5 +938,17 @@ rtc: rtc@7090000 {
> clock-names = "bus", "hosc", "ahb";
> #clock-cells = <1>;
> };
> +
> + ths: thermal-sensor@2009400 {
> + compatible = "allwinner,sun20i-d1-ths";
> + reg = <0x2009400 0x100>;
Size should be 0x400.
Best regards,
Jernej
> + interrupts = <SOC_PERIPHERAL_IRQ(58) IRQ_TYPE_LEVEL_HIGH>;
> + clocks = <&ccu CLK_BUS_THS>;
> + clock-names = "bus";
> + resets = <&ccu RST_BUS_THS>;
> + nvmem-cells = <&ths_calibration>;
> + nvmem-cell-names = "calibration";
> + #thermal-sensor-cells = <0>;
> + };
> };
> };
>
