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Date: Wed, 20 May 2020 14:02:40 +0800
From: Anson Huang <Anson.Huang@....com>
To: rui.zhang@...el.com, daniel.lezcano@...aro.org,
amit.kucheria@...durent.com, robh+dt@...nel.org,
shawnguo@...nel.org, s.hauer@...gutronix.de, kernel@...gutronix.de,
festevam@...il.com, linux-pm@...r.kernel.org,
devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
linux-kernel@...r.kernel.org
Cc: Linux-imx@....com
Subject: [PATCH V2] dt-bindings: thermal: Convert i.MX to json-schema
Convert the i.MX thermal binding to DT schema format using json-schema
Signed-off-by: Anson Huang <Anson.Huang@....com>
---
Changes since V1:
- move tempmon node into its parent node anatop in example;
- improve "fsl,tempmon" description.
---
.../devicetree/bindings/thermal/imx-thermal.txt | 61 -------------
.../devicetree/bindings/thermal/imx-thermal.yaml | 100 +++++++++++++++++++++
2 files changed, 100 insertions(+), 61 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/thermal/imx-thermal.txt
create mode 100644 Documentation/devicetree/bindings/thermal/imx-thermal.yaml
diff --git a/Documentation/devicetree/bindings/thermal/imx-thermal.txt b/Documentation/devicetree/bindings/thermal/imx-thermal.txt
deleted file mode 100644
index 823e417..0000000
--- a/Documentation/devicetree/bindings/thermal/imx-thermal.txt
+++ /dev/null
@@ -1,61 +0,0 @@
-* Temperature Monitor (TEMPMON) on Freescale i.MX SoCs
-
-Required properties:
-- compatible : must be one of following:
- - "fsl,imx6q-tempmon" for i.MX6Q,
- - "fsl,imx6sx-tempmon" for i.MX6SX,
- - "fsl,imx7d-tempmon" for i.MX7S/D.
-- interrupts : the interrupt output of the controller:
- i.MX6Q has one IRQ which will be triggered when temperature is higher than high threshold,
- i.MX6SX and i.MX7S/D have two more IRQs than i.MX6Q, one is IRQ_LOW and the other is IRQ_PANIC,
- when temperature is below than low threshold, IRQ_LOW will be triggered, when temperature
- is higher than panic threshold, system will auto reboot by SRC module.
-- fsl,tempmon : phandle pointer to system controller that contains TEMPMON
- control registers, e.g. ANATOP on imx6q.
-- nvmem-cells: A phandle to the calibration cells provided by ocotp.
-- nvmem-cell-names: Should be "calib", "temp_grade".
-
-Deprecated properties:
-- fsl,tempmon-data : phandle pointer to fuse controller that contains TEMPMON
- calibration data, e.g. OCOTP on imx6q. The details about calibration data
- can be found in SoC Reference Manual.
-
-Direct access to OCOTP via fsl,tempmon-data is incorrect on some newer chips
-because it does not handle OCOTP clock requirements.
-
-Optional properties:
-- clocks : thermal sensor's clock source.
-
-Example:
-ocotp: ocotp@...c000 {
- #address-cells = <1>;
- #size-cells = <1>;
- compatible = "fsl,imx6sx-ocotp", "syscon";
- reg = <0x021bc000 0x4000>;
- clocks = <&clks IMX6SX_CLK_OCOTP>;
-
- tempmon_calib: calib@38 {
- reg = <0x38 4>;
- };
-
- tempmon_temp_grade: temp-grade@20 {
- reg = <0x20 4>;
- };
-};
-
-tempmon: tempmon {
- compatible = "fsl,imx6sx-tempmon", "fsl,imx6q-tempmon";
- interrupts = <GIC_SPI 49 IRQ_TYPE_LEVEL_HIGH>;
- fsl,tempmon = <&anatop>;
- nvmem-cells = <&tempmon_calib>, <&tempmon_temp_grade>;
- nvmem-cell-names = "calib", "temp_grade";
- clocks = <&clks IMX6SX_CLK_PLL3_USB_OTG>;
-};
-
-Legacy method (Deprecated):
-tempmon {
- compatible = "fsl,imx6q-tempmon";
- fsl,tempmon = <&anatop>;
- fsl,tempmon-data = <&ocotp>;
- clocks = <&clks 172>;
-};
diff --git a/Documentation/devicetree/bindings/thermal/imx-thermal.yaml b/Documentation/devicetree/bindings/thermal/imx-thermal.yaml
new file mode 100644
index 0000000..894465e
--- /dev/null
+++ b/Documentation/devicetree/bindings/thermal/imx-thermal.yaml
@@ -0,0 +1,100 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/thermal/imx-thermal.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NXP i.MX Thermal Binding
+
+maintainers:
+ - Shawn Guo <shawn.guo@...aro.org>
+ - Anson Huang <Anson.Huang@....com>
+
+properties:
+ compatible:
+ oneOf:
+ - items:
+ - enum:
+ - fsl,imx6q-tempmon
+ - fsl,imx6sx-tempmon
+ - fsl,imx7d-tempmon
+
+ interrupts:
+ description: |
+ The interrupt output of the controller, the IRQ will be triggered
+ when temperature is higher than high threshold.
+ maxItems: 1
+
+ nvmem-cells:
+ description: |
+ Phandle to the calibration cells provided by ocotp for calibration
+ data and temperature grade.
+ maxItems: 2
+
+ nvmem-cell-names:
+ maxItems: 2
+ items:
+ - const: calib
+ - const: temp_grade
+
+ fsl,tempmon:
+ $ref: '/schemas/types.yaml#/definitions/phandle'
+ description: Phandle to the register map node.
+
+ fsl,tempmon-data:
+ $ref: '/schemas/types.yaml#/definitions/phandle'
+ description: |
+ Deprecated property, phandle pointer to fuse controller that contains
+ TEMPMON calibration data, e.g. OCOTP on imx6q. The details about
+ calibration data can be found in SoC Reference Manual.
+ deprecated: true
+
+ clocks:
+ maxItems: 1
+
+required:
+ - compatible
+ - interrupts
+ - fsl,tempmon
+ - nvmem-cells
+ - nvmem-cell-names
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/clock/imx6sx-clock.h>
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+ efuse@...c000 {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ compatible = "fsl,imx6sx-ocotp", "syscon";
+ reg = <0x021bc000 0x4000>;
+ clocks = <&clks IMX6SX_CLK_OCOTP>;
+
+ tempmon_calib: calib@38 {
+ reg = <0x38 4>;
+ };
+
+ tempmon_temp_grade: temp-grade@20 {
+ reg = <0x20 4>;
+ };
+ };
+
+ anatop@...8000 {
+ compatible = "fsl,imx6q-anatop", "syscon", "simple-mfd";
+ reg = <0x020c8000 0x1000>;
+ interrupts = <0 49 IRQ_TYPE_LEVEL_HIGH>,
+ <0 54 IRQ_TYPE_LEVEL_HIGH>,
+ <0 127 IRQ_TYPE_LEVEL_HIGH>;
+
+ tempmon {
+ compatible = "fsl,imx6sx-tempmon";
+ interrupts = <GIC_SPI 49 IRQ_TYPE_LEVEL_HIGH>;
+ fsl,tempmon = <&anatop>;
+ nvmem-cells = <&tempmon_calib>, <&tempmon_temp_grade>;
+ nvmem-cell-names = "calib", "temp_grade";
+ clocks = <&clks IMX6SX_CLK_PLL3_USB_OTG>;
+ };
+ };
--
2.7.4
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