Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 7796031e authored by Caesar Wang's avatar Caesar Wang Committed by Heiko Stuebner
Browse files

ARM: dts: rockchip: add the thermal main info found on rk3228 



This patch adds the thermal needed main information for rk3228 SoCS.

Basically has the following content:

1) TSADC controller:
Add the needed attributes for rk3036 TSADC controller.

Especially for the TSHUT, in some cases if we are unable to shut it down
in orderly fashion (says: kernel is stuck holding a lock or similar), then
hardware TSHUT will reset it.
If the temperature is over 95C over a period of time the thermal shutdown
of the tsadc is invoked with can either reset the entire chip via the CRU,
or notify the PMIC via a GPIO. This should be set in the specific board.

2) Thermal zones:
Add the needed device mode for thermal generic framework.
Detail in Documentation/devicetree/bindings/thermal/thermal.txt.

Signed-off-by: default avatarCaesar Wang <wxt@rock-chips.com>
Signed-off-by: default avatarHeiko Stuebner <heiko@sntech.de>
parent fe95effb

arch/arm/boot/dts/rk3228.dtsi

+69 −0
Original line number Diff line number Diff line
@@ -43,6 +43,7 @@ 
#include <dt-bindings/interrupt-controller/arm-gic.h>

#include <dt-bindings/pinctrl/rockchip.h>

#include <dt-bindings/clock/rk3228-cru.h>

#include <dt-bindings/thermal/thermal.h>

#include "skeleton.dtsi"



/ {
@@ -69,6 +70,7 @@ 
				/* KHz    uV */

				 816000 1000000

			>;

			#cooling-cells = <2>; /* min followed by max */

			clock-latency = <40000>;

			clocks = <&cru ARMCLK>;

		};
@@ -247,6 +249,63 @@ 
		assigned-clock-rates = <594000000>;

	};



	thermal-zones {

		cpu_thermal: cpu-thermal {

			polling-delay-passive = <100>; /* milliseconds */

			polling-delay = <5000>; /* milliseconds */



			thermal-sensors = <&tsadc 0>;



			trips {

				cpu_alert0: cpu_alert0 {

					temperature = <70000>; /* millicelsius */

					hysteresis = <2000>; /* millicelsius */

					type = "passive";

				};

				cpu_alert1: cpu_alert1 {

					temperature = <75000>; /* millicelsius */

					hysteresis = <2000>; /* millicelsius */

					type = "passive";

				};

				cpu_crit: cpu_crit {

					temperature = <90000>; /* millicelsius */

					hysteresis = <2000>; /* millicelsius */

					type = "critical";

				};

			};



			cooling-maps {

				map0 {

					trip = <&cpu_alert0>;

					cooling-device =

						<&cpu0 THERMAL_NO_LIMIT 6>;

				};

				map1 {

					trip = <&cpu_alert1>;

					cooling-device =

						<&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;

				};

			};

		};

	};



	tsadc: tsadc@11150000 {

		compatible = "rockchip,rk3228-tsadc";

		reg = <0x11150000 0x100>;

		interrupts = <GIC_SPI 58 IRQ_TYPE_LEVEL_HIGH>;

		clocks = <&cru SCLK_TSADC>, <&cru PCLK_TSADC>;

		clock-names = "tsadc", "apb_pclk";

		resets = <&cru SRST_TSADC>;

		reset-names = "tsadc-apb";

		pinctrl-names = "init", "default", "sleep";

		pinctrl-0 = <&otp_gpio>;

		pinctrl-1 = <&otp_out>;

		pinctrl-2 = <&otp_gpio>;

		#thermal-sensor-cells = <0>;

		rockchip,hw-tshut-temp = <95000>;

		status = "disabled";

	};



	emmc: dwmmc@30020000 {

		compatible = "rockchip,rk3288-dw-mshc";

		reg = <0x30020000 0x4000>;
@@ -394,6 +453,16 @@ 
			};

		};



		tsadc {

			otp_gpio: otp-gpio {

				rockchip,pins = <0 24 RK_FUNC_GPIO &pcfg_pull_none>;

			};



			otp_out: otp-out {

				rockchip,pins = <0 24 RK_FUNC_2 &pcfg_pull_none>;

			};

		};



		uart0 {

			uart0_xfer: uart0-xfer {

				rockchip,pins = <2 26 RK_FUNC_1 &pcfg_pull_none>,