linux-kernel - [PATCH v3 1/4] dt-bindings: thermal: k3-j72xx: Add VTM bindings documentation

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20211025180603.22290-2-j-keerthy@ti.com>
Date:   Mon, 25 Oct 2021 23:36:00 +0530
From:   Keerthy <j-keerthy@...com>
To:     <robh+dt@...nel.org>, <daniel.lezcano@...aro.org>,
        <rui.zhang@...el.com>, <amitk@...nel.org>, <kristo@...nel.org>
CC:     <j-keerthy@...com>, <linux-pm@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH v3 1/4] dt-bindings: thermal: k3-j72xx: Add VTM bindings documentation

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@...com>
---
 .../bindings/thermal/ti,j72xx-thermal.yaml    | 62 +++++++++++++++++++
 1 file changed, 62 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/thermal/ti,j72xx-thermal.yaml

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..8483c495cb9a
--- /dev/null
+++ b/Documentation/devicetree/bindings/thermal/ti,j72xx-thermal.yaml
@@ -0,0 +1,62 @@
+# 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@...com>
+
+properties:
+  compatible:
+    const: ti,j721e-vtm
+    oneOf:
+      - enum:
+          - ti,j721e-vtm
+          - ti,j7200-vtm
+
+  reg:
+    maxItems: 3
+
+  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: wkup_vtm0@...40000 {
+        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";
+                };
+        };
+    };
+...
-- 
2.17.1