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Message-Id: <20230601134425.29499-1-matthias.bgg@kernel.org>
Date: Thu, 1 Jun 2023 15:44:24 +0200
From: matthias.bgg@...nel.org
To: rafael@...nel.org, Daniel Lezcano <daniel.lezcano@...aro.org>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Conor Dooley <conor+dt@...nel.org>,
AngeloGioacchino Del Regno
<angelogioacchino.delregno@...labora.com>
Cc: devicetree@...r.kernel.org, Amit Kucheria <amitk@...nel.org>,
linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-mediatek@...ts.infradead.org,
Zhang Rui <rui.zhang@...el.com>,
linux-arm-kernel@...ts.infradead.org,
Matthias Brugger <matthias.bgg@...il.com>
Subject: [PATCH v2 1/2] dt-bindings: thermal: mediatek: Move auxdac binding to yaml
From: Matthias Brugger <matthias.bgg@...il.com>
Convert the older binding to yaml syntax.
The thermal IP has several sensors, to reflect that
thermal-sensors-cells is set to '1'. Apart optional regulator
for bank supply wasn't part of the old binding description,
this patch adds them.
Signed-off-by: Matthias Brugger <matthias.bgg@...il.com>
---
Changes in v2:
- drop auxadc and apmixedsys nodes
- maxItems for clocks
- drop obvious description of reset
- mention optional regulators in commit message
- mention thermal-sensors-cells change in commit message
.../bindings/thermal/mediatek,thermal.yaml | 152 ++++++++++++++++++
.../bindings/thermal/mediatek-thermal.txt | 52 ------
2 files changed, 152 insertions(+), 52 deletions(-)
create mode 100644 Documentation/devicetree/bindings/thermal/mediatek,thermal.yaml
delete mode 100644 Documentation/devicetree/bindings/thermal/mediatek-thermal.txt
diff --git a/Documentation/devicetree/bindings/thermal/mediatek,thermal.yaml b/Documentation/devicetree/bindings/thermal/mediatek,thermal.yaml
new file mode 100644
index 000000000000..bbc9c2935da0
--- /dev/null
+++ b/Documentation/devicetree/bindings/thermal/mediatek,thermal.yaml
@@ -0,0 +1,152 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/thermal/mediatek,thermal.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: MediaTek Thermal Sensor
+
+maintainers:
+ - Matthias Brugger <matthias.bgg@...il.com>
+
+description: |
+ The MediaTek thermal controller measures the on-SoC temperatures.
+ This device does not have its own ADC, instead it directly controls
+ the AUXADC via AHB bus accesses. For this reason this device needs
+ phandles to the AUXADC. Also it controls a mux in the apmixedsys
+ register space via AHB bus accesses, so a phandle to the APMIXEDSYS
+ is also needed.
+
+properties:
+ compatible:
+ oneOf:
+ - enum:
+ - mediatek,mt2701-thermal
+ - mediatek,mt2712-thermal
+ - mediatek,mt7622-thermal
+ - mediatek,mt7986-thermal
+ - mediatek,mt8173-thermal
+ - mediatek,mt8183-thermal
+ - mediatek,mt8365-thermal
+ - items:
+ - const: mediatek,mt7981-thermal
+ - const: mediatek,mt7986-thermal
+ - items:
+ - const: mediatek,mt8516-thermal
+ - const: mediatek,mt2701-thermal
+
+ reg:
+ maxItems: 1
+
+ interrupts:
+ maxItems: 1
+
+ clocks:
+ maxItems: 2
+
+ clock-names:
+ items:
+ - const: therm
+ - const: auxadc
+
+ resets:
+ maxItems: 1
+
+ reset-names:
+ items:
+ - const: therm
+
+ nvmem-cells:
+ items:
+ - description: Calibration eFuse data. If unspecified default values are used.
+
+ nvmem-cell-names:
+ items:
+ - const: calibration-data
+
+ mediatek,auxadc:
+ $ref: /schemas/types.yaml#/definitions/phandle
+ description:
+ A phandle to the AUXADC which the thermal controller uses.
+
+ mediatek,apmixedsys:
+ $ref: /schemas/types.yaml#/definitions/phandle
+ description:
+ A phandle to the APMIXEDSYS controller.
+
+ "#thermal-sensor-cells":
+ const: 1
+
+ bank0-supply:
+ description: Regulator supplying voltage to the first bank
+
+ bank1-supply:
+ description: Regulator supplying voltage to the second bank
+
+required:
+ - compatible
+ - reg
+ - interrupts
+ - clocks
+ - mediatek,auxadc
+ - mediatek,apmixedsys
+ - "#thermal-sensor-cells"
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+ #include <dt-bindings/clock/mt8173-clk.h>
+ #include <dt-bindings/reset/mt8173-resets.h>
+
+ soc {
+ #address-cells = <2>;
+ #size-cells = <2>;
+
+ thermal: thermal@...0b000 {
+ #thermal-sensor-cells = <1>;
+ compatible = "mediatek,mt8173-thermal";
+ reg = <0 0x1100b000 0 0x1000>;
+ interrupts = <0 70 IRQ_TYPE_LEVEL_LOW>;
+ clocks = <&pericfg CLK_PERI_THERM>, <&pericfg CLK_PERI_AUXADC>;
+ clock-names = "therm", "auxadc";
+ resets = <&pericfg MT8173_PERI_THERM_SW_RST>;
+ reset-names = "therm";
+ mediatek,auxadc = <&auxadc>;
+ mediatek,apmixedsys = <&apmixedsys>;
+ nvmem-cells = <&thermal_calibration_data>;
+ nvmem-cell-names = "calibration-data";
+ };
+
+ thermal-zones {
+ cpu_thermal: cpu-thermal {
+ polling-delay-passive = <1000>;
+ polling-delay = <1000>;
+
+ thermal-sensors = <&thermal 0>;
+ sustainable-power = <1500>;
+
+ trips {
+ threshold: trip-point0 {
+ temperature = <68000>;
+ hysteresis = <2000>;
+ type = "passive";
+ };
+
+ target: trip-point1 {
+ temperature = <85000>;
+ hysteresis = <2000>;
+ type = "passive";
+ };
+
+ cpu_crit: cpu-crit0 {
+ temperature = <115000>;
+ hysteresis = <2000>;
+ type = "critical";
+ };
+ };
+ };
+ };
+ };
+...
diff --git a/Documentation/devicetree/bindings/thermal/mediatek-thermal.txt b/Documentation/devicetree/bindings/thermal/mediatek-thermal.txt
deleted file mode 100644
index ac39c7156fde..000000000000
--- a/Documentation/devicetree/bindings/thermal/mediatek-thermal.txt
+++ /dev/null
@@ -1,52 +0,0 @@
-* Mediatek Thermal
-
-This describes the device tree binding for the Mediatek thermal controller
-which measures the on-SoC temperatures. This device does not have its own ADC,
-instead it directly controls the AUXADC via AHB bus accesses. For this reason
-this device needs phandles to the AUXADC. Also it controls a mux in the
-apmixedsys register space via AHB bus accesses, so a phandle to the APMIXEDSYS
-is also needed.
-
-Required properties:
-- compatible:
- - "mediatek,mt8173-thermal" : For MT8173 family of SoCs
- - "mediatek,mt2701-thermal" : For MT2701 family of SoCs
- - "mediatek,mt2712-thermal" : For MT2712 family of SoCs
- - "mediatek,mt7622-thermal" : For MT7622 SoC
- - "mediatek,mt7981-thermal", "mediatek,mt7986-thermal" : For MT7981 SoC
- - "mediatek,mt7986-thermal" : For MT7986 SoC
- - "mediatek,mt8183-thermal" : For MT8183 family of SoCs
- - "mediatek,mt8365-thermal" : For MT8365 family of SoCs
- - "mediatek,mt8516-thermal", "mediatek,mt2701-thermal : For MT8516 family of SoCs
-- reg: Address range of the thermal controller
-- interrupts: IRQ for the thermal controller
-- clocks, clock-names: Clocks needed for the thermal controller. required
- clocks are:
- "therm": Main clock needed for register access
- "auxadc": The AUXADC clock
-- mediatek,auxadc: A phandle to the AUXADC which the thermal controller uses
-- mediatek,apmixedsys: A phandle to the APMIXEDSYS controller.
-- #thermal-sensor-cells : Should be 0. See Documentation/devicetree/bindings/thermal/thermal-sensor.yaml for a description.
-
-Optional properties:
-- resets: Reference to the reset controller controlling the thermal controller.
-- nvmem-cells: A phandle to the calibration data provided by a nvmem device. If
- unspecified default values shall be used.
-- nvmem-cell-names: Should be "calibration-data"
-
-Example:
-
- thermal: thermal@...0b000 {
- #thermal-sensor-cells = <1>;
- compatible = "mediatek,mt8173-thermal";
- reg = <0 0x1100b000 0 0x1000>;
- interrupts = <0 70 IRQ_TYPE_LEVEL_LOW>;
- clocks = <&pericfg CLK_PERI_THERM>, <&pericfg CLK_PERI_AUXADC>;
- clock-names = "therm", "auxadc";
- resets = <&pericfg MT8173_PERI_THERM_SW_RST>;
- reset-names = "therm";
- mediatek,auxadc = <&auxadc>;
- mediatek,apmixedsys = <&apmixedsys>;
- nvmem-cells = <&thermal_calibration_data>;
- nvmem-cell-names = "calibration-data";
- };
--
2.40.1
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