arm64: dts: ti: j784s4: Add VTM node

VTM stands for Voltage Thermal Management. Add the thermal zones.
Seven sensors mapping to seven thermal zones. Main0, Main1, Main2, Main3,
Main4, WKUP1 & WKUP2 domains respectively.

Signed-off-by: Keerthy <j-keerthy@ti.com>
[bb@ti.com: rebased on v6.3-rc1]
Signed-off-by: Bryan Brattlof <bb@ti.com>
Link: https://lore.kernel.org/r/20230405215328.3755561-5-bb@ti.com
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>

diff --git a/arch/arm64/boot/dts/ti/k3-j784s4-mcu-wakeup.dtsi b/arch/arm64/boot/dts/ti/k3-j784s4-mcu-wakeup.dtsi
index e517043..32ba276 100644 (file)
--- a/arch/arm64/boot/dts/ti/k3-j784s4-mcu-wakeup.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-j784s4-mcu-wakeup.dtsi
@@ -382,4 +382,12 @@
                        ti,loczrama = <1>;
                };
        };
+
+       wkup_vtm0: temperature-sensor@42040000 {
+               compatible = "ti,j7200-vtm";
+               reg = <0x00 0x42040000 0x00 0x350>,
+                     <0x00 0x42050000 0x00 0x350>;
+               power-domains = <&k3_pds 154 TI_SCI_PD_SHARED>;
+               #thermal-sensor-cells = <1>;
+       };
 };

diff --git a/arch/arm64/boot/dts/ti/k3-j784s4-thermal.dtsi b/arch/arm64/boot/dts/ti/k3-j784s4-thermal.dtsi
new file mode 100644 (file)
index 0000000..f7b1a15
--- /dev/null
+++ b/arch/arm64/boot/dts/ti/k3-j784s4-thermal.dtsi
@@ -0,0 +1,101 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <dt-bindings/thermal/thermal.h>
+
+wkup0_thermal: wkup0-thermal {
+       polling-delay-passive = <250>; /* milliseconds */
+       polling-delay = <500>; /* milliseconds */
+       thermal-sensors = <&wkup_vtm0 0>;
+
+       trips {
+               wkup0_crit: wkup0-crit {
+                       temperature = <125000>; /* milliCelsius */
+                       hysteresis = <2000>; /* milliCelsius */
+                       type = "critical";
+               };
+       };
+};
+
+wkup1_thermal: wkup1-thermal {
+       polling-delay-passive = <250>; /* milliseconds */
+       polling-delay = <500>; /* milliseconds */
+       thermal-sensors = <&wkup_vtm0 1>;
+
+       trips {
+               wkup1_crit: wkup1-crit {
+                       temperature = <125000>; /* milliCelsius */
+                       hysteresis = <2000>; /* milliCelsius */
+                       type = "critical";
+               };
+       };
+};
+
+main0_thermal: main0-thermal {
+       polling-delay-passive = <250>; /* milliseconds */
+       polling-delay = <500>; /* milliseconds */
+       thermal-sensors = <&wkup_vtm0 2>;
+
+       trips {
+               main0_crit: main0-crit {
+                       temperature = <125000>; /* milliCelsius */
+                       hysteresis = <2000>; /* milliCelsius */
+                       type = "critical";
+               };
+       };
+};
+
+main1_thermal: main1-thermal {
+       polling-delay-passive = <250>; /* milliseconds */
+       polling-delay = <500>; /* milliseconds */
+       thermal-sensors = <&wkup_vtm0 3>;
+
+       trips {
+               main1_crit: main1-crit {
+                       temperature = <125000>; /* milliCelsius */
+                       hysteresis = <2000>; /* milliCelsius */
+                       type = "critical";
+               };
+       };
+};
+
+main2_thermal: main2-thermal {
+       polling-delay-passive = <250>; /* milliseconds */
+       polling-delay = <500>; /* milliseconds */
+       thermal-sensors = <&wkup_vtm0 4>;
+
+       trips {
+               main2_crit: main2-crit {
+                       temperature = <125000>; /* milliCelsius */
+                       hysteresis = <2000>; /* milliCelsius */
+                       type = "critical";
+               };
+       };
+};
+
+main3_thermal: main3-thermal {
+       polling-delay-passive = <250>; /* milliseconds */
+       polling-delay = <500>; /* milliseconds */
+       thermal-sensors = <&wkup_vtm0 5>;
+
+       trips {
+               main3_crit: main3-crit {
+                       temperature = <125000>; /* milliCelsius */
+                       hysteresis = <2000>; /* milliCelsius */
+                       type = "critical";
+               };
+       };
+};
+
+main4_thermal: main4-thermal {
+       polling-delay-passive = <250>; /* milliseconds */
+       polling-delay = <500>; /* milliseconds */
+       thermal-sensors = <&wkup_vtm0 6>;
+
+       trips {
+               main4_crit: main4-crit {
+                       temperature = <125000>; /* milliCelsius */
+                       hysteresis = <2000>; /* milliCelsius */
+                       type = "critical";
+               };
+       };
+};

diff --git a/arch/arm64/boot/dts/ti/k3-j784s4.dtsi b/arch/arm64/boot/dts/ti/k3-j784s4.dtsi
index 2e03d84..cd403c3 100644 (file)
--- a/arch/arm64/boot/dts/ti/k3-j784s4.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-j784s4.dtsi
@@ -281,6 +281,10 @@
                                 <0x07 0x00000000 0x07 0x00000000 0x01 0x00000000>; /* FSS OSPI1 data region 3*/
                };
        };
+
+       thermal_zones: thermal-zones {
+               #include "k3-j784s4-thermal.dtsi"
+       };
 };
 
 /* Now include peripherals from each bus segment */