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[v9,1/2] dt-bindings: thermal: k3-j72xx: Add VTM bindings documentation

Message ID 20220517172920.10857-2-j-keerthy@ti.com
State Superseded
Headers show
Series thermal: k3_j72xx_bandgap: Add the bandgap driver support | expand

Commit Message

J, KEERTHY May 17, 2022, 5:29 p.m. UTC 
Add VTM bindings documentation. In the Voltage Thermal
Management Module(VTM), K3 J72XX supplies a voltage
reference and a temperature sensor feature that are gathered in the band
gap voltage and temperature sensor (VBGAPTS) module. The band
gap provides current and voltage reference for its internal
circuits and other analog IP blocks. The analog-to-digital
converter (ADC) produces an output value that is proportional
to the silicon temperature.

Signed-off-by: Keerthy <j-keerthy@ti.com>
Reviewed-by: Rob Herring <robh@kernel.org>
---
 .../bindings/thermal/ti,j72xx-thermal.yaml    | 63 +++++++++++++++++++
 1 file changed, 63 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/thermal/ti,j72xx-thermal.yaml

Comments

Krzysztof Kozlowski May 18, 2022, 12:42 p.m. UTC | #1 
On 18/05/2022 10:27, Daniel Lezcano wrote:
> 
> Hi Krzysztof,
> 
> I would like to pick this series, does the DT bindings have your blessing ?


Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>


Best regards,
Krzysztof
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/thermal/ti,j72xx-thermal.yaml b/Documentation/devicetree/bindings/thermal/ti,j72xx-thermal.yaml
new file mode 100644
index 000000000000..c74f124ebfc0
--- /dev/null
+++ b/Documentation/devicetree/bindings/thermal/ti,j72xx-thermal.yaml
@@ -0,0 +1,63 @@ 
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/thermal/ti,j72xx-thermal.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Texas Instruments J72XX VTM (DTS) binding
+
+maintainers:
+  - Keerthy <j-keerthy@ti.com>
+
+properties:
+  compatible:
+    enum:
+      - ti,j721e-vtm
+      - ti,j7200-vtm
+
+  reg:
+    items:
+      - description: VTM cfg1 register space
+      - description: VTM cfg2 register space
+      - description: VTM efuse register space
+
+  power-domains:
+    maxItems: 1
+
+  "#thermal-sensor-cells":
+    const: 1
+
+required:
+  - compatible
+  - reg
+  - power-domains
+  - "#thermal-sensor-cells"
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/soc/ti,sci_pm_domain.h>
+    wkup_vtm0: thermal-sensor@42040000 {
+        compatible = "ti,j721e-vtm";
+        reg = <0x42040000 0x350>,
+              <0x42050000 0x350>,
+              <0x43000300 0x10>;
+        power-domains = <&k3_pds 154 TI_SCI_PD_EXCLUSIVE>;
+        #thermal-sensor-cells = <1>;
+    };
+
+    mpu_thermal: mpu-thermal {
+        polling-delay-passive = <250>; /* milliseconds */
+        polling-delay = <500>; /* milliseconds */
+        thermal-sensors = <&wkup_vtm0 0>;
+
+        trips {
+            mpu_crit: mpu-crit {
+                temperature = <125000>; /* milliCelsius */
+                hysteresis = <2000>; /* milliCelsius */
+                type = "critical";
+            };
+        };
+    };
+...