arm64: dts: ti: j7200: Add VTM node

VTM stands for Voltage Thermal Management. Add the thermal zones.
Three sensors mapping to 3 thermal zones. MCU, MPU & Main 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/20230405215328.3755561-7-bb@ti.com
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>

diff --git a/arch/arm64/boot/dts/ti/k3-j7200-mcu-wakeup.dtsi b/arch/arm64/boot/dts/ti/k3-j7200-mcu-wakeup.dtsi
index 331b4e482e41cf71207088e378f8dcf22133d1e5..6a26758af7be049f2613fac2dd44f8d05a3d2a10 100644 (file)
--- a/arch/arm64/boot/dts/ti/k3-j7200-mcu-wakeup.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-j7200-mcu-wakeup.dtsi
@@ -459,4 +459,12 @@
                        status = "disabled"; /* Used by OP-TEE */
                };
        };
+
+       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_EXCLUSIVE>;
+               #thermal-sensor-cells = <1>;
+       };
 };

diff --git a/arch/arm64/boot/dts/ti/k3-j7200-thermal.dtsi b/arch/arm64/boot/dts/ti/k3-j7200-thermal.dtsi
new file mode 100644 (file)
index 0000000..e7e3a64
--- /dev/null
+++ b/arch/arm64/boot/dts/ti/k3-j7200-thermal.dtsi
@@ -0,0 +1,47 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <dt-bindings/thermal/thermal.h>
+
+thermal_zones: thermal-zones {
+       mcu_thermal: mcu-thermal {
+               polling-delay-passive = <250>; /* milliseconds */
+               polling-delay = <500>; /* milliseconds */
+               thermal-sensors = <&wkup_vtm0 0>;
+
+               trips {
+                       wkup_crit: wkup-crit {
+                               temperature = <125000>; /* milliCelsius */
+                               hysteresis = <2000>; /* milliCelsius */
+                               type = "critical";
+                       };
+               };
+       };
+
+       mpu_thermal: mpu-thermal {
+               polling-delay-passive = <250>; /* milliseconds */
+               polling-delay = <500>; /* milliseconds */
+               thermal-sensors = <&wkup_vtm0 1>;
+
+               trips {
+                       mpu_crit: mpu-crit {
+                               temperature = <125000>; /* milliCelsius */
+                               hysteresis = <2000>; /* milliCelsius */
+                               type = "critical";
+                       };
+               };
+       };
+
+       main_thermal: main-thermal {
+               polling-delay-passive = <250>; /* milliseconds */
+               polling-delay = <500>; /* milliseconds */
+               thermal-sensors = <&wkup_vtm0 2>;
+
+               trips {
+                       c7x_crit: c7x-crit {
+                               temperature = <125000>; /* milliCelsius */
+                               hysteresis = <2000>; /* milliCelsius */
+                               type = "critical";
+                       };
+               };
+       };
+};

diff --git a/arch/arm64/boot/dts/ti/k3-j7200.dtsi b/arch/arm64/boot/dts/ti/k3-j7200.dtsi
index f1836ec8e9340da4e0fd6942a43780e9eed203a0..6c96759e87524782cee470e67e75dbd2dc9219f0 100644 (file)
--- a/arch/arm64/boot/dts/ti/k3-j7200.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-j7200.dtsi
@@ -171,6 +171,8 @@
                                 <0x07 0x00000000 0x07 0x00000000 0x01 0x00000000>; /* FSS OSPI1 data region 3 */
                };
        };
+
+       #include "k3-j7200-thermal.dtsi"
 };
 
 /* Now include the peripherals for each bus segments */