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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@nxp.com> Reviewed-by: Dong Aisheng <aisheng.dong@nxp.com> Signed-off-by: Rob Herring <robh@kernel.org>
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Anson Huang
Rob Herring
parent
3449aae343
commit
6d97d497d4
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* Temperature Monitor (TEMPMON) on Freescale i.MX SoCs
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Required properties:
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- compatible : must be one of following:
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- "fsl,imx6q-tempmon" for i.MX6Q,
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- "fsl,imx6sx-tempmon" for i.MX6SX,
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- "fsl,imx7d-tempmon" for i.MX7S/D.
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- interrupts : the interrupt output of the controller:
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i.MX6Q has one IRQ which will be triggered when temperature is higher than high threshold,
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i.MX6SX and i.MX7S/D have two more IRQs than i.MX6Q, one is IRQ_LOW and the other is IRQ_PANIC,
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when temperature is below than low threshold, IRQ_LOW will be triggered, when temperature
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is higher than panic threshold, system will auto reboot by SRC module.
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- fsl,tempmon : phandle pointer to system controller that contains TEMPMON
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control registers, e.g. ANATOP on imx6q.
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- nvmem-cells: A phandle to the calibration cells provided by ocotp.
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- nvmem-cell-names: Should be "calib", "temp_grade".
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Deprecated properties:
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- fsl,tempmon-data : phandle pointer to fuse controller that contains TEMPMON
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calibration data, e.g. OCOTP on imx6q. The details about calibration data
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can be found in SoC Reference Manual.
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Direct access to OCOTP via fsl,tempmon-data is incorrect on some newer chips
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because it does not handle OCOTP clock requirements.
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Optional properties:
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- clocks : thermal sensor's clock source.
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Example:
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ocotp: ocotp@21bc000 {
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#address-cells = <1>;
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#size-cells = <1>;
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compatible = "fsl,imx6sx-ocotp", "syscon";
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reg = <0x021bc000 0x4000>;
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clocks = <&clks IMX6SX_CLK_OCOTP>;
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tempmon_calib: calib@38 {
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reg = <0x38 4>;
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};
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tempmon_temp_grade: temp-grade@20 {
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reg = <0x20 4>;
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};
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};
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tempmon: tempmon {
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compatible = "fsl,imx6sx-tempmon", "fsl,imx6q-tempmon";
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interrupts = <GIC_SPI 49 IRQ_TYPE_LEVEL_HIGH>;
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fsl,tempmon = <&anatop>;
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nvmem-cells = <&tempmon_calib>, <&tempmon_temp_grade>;
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nvmem-cell-names = "calib", "temp_grade";
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clocks = <&clks IMX6SX_CLK_PLL3_USB_OTG>;
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};
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Legacy method (Deprecated):
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tempmon {
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compatible = "fsl,imx6q-tempmon";
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fsl,tempmon = <&anatop>;
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fsl,tempmon-data = <&ocotp>;
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clocks = <&clks 172>;
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};
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102
Documentation/devicetree/bindings/thermal/imx-thermal.yaml
Normal file
102
Documentation/devicetree/bindings/thermal/imx-thermal.yaml
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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/thermal/imx-thermal.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: NXP i.MX Thermal Binding
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maintainers:
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- Shawn Guo <shawn.guo@linaro.org>
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- Anson Huang <Anson.Huang@nxp.com>
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properties:
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compatible:
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enum:
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- fsl,imx6q-tempmon
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- fsl,imx6sx-tempmon
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- fsl,imx7d-tempmon
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interrupts:
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description: |
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The interrupt output of the controller, i.MX6Q has IRQ_HIGH which
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will be triggered when temperature is higher than high threshold,
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i.MX6SX and i.MX7S/D have two more IRQs than i.MX6Q, one is IRQ_LOW
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and the other is IRQ_PANIC, when temperature is lower than low
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threshold, IRQ_LOW will be triggered, when temperature is higher
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than panic threshold, IRQ_PANIC will be triggered, and system can
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be configured to auto reboot by SRC module for IRQ_PANIC. IRQ_HIGH,
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IRQ_LOW and IRQ_PANIC share same interrupt output of controller.
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maxItems: 1
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nvmem-cells:
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items:
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- description: Phandle to the calibration data provided by ocotp
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- description: Phandle to the temperature grade provided by ocotp
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nvmem-cell-names:
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items:
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- const: calib
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- const: temp_grade
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fsl,tempmon:
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$ref: '/schemas/types.yaml#/definitions/phandle'
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description: Phandle to anatop system controller node.
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fsl,tempmon-data:
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$ref: '/schemas/types.yaml#/definitions/phandle'
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description: |
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Deprecated property, phandle pointer to fuse controller that contains
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TEMPMON calibration data, e.g. OCOTP on imx6q. The details about
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calibration data can be found in SoC Reference Manual.
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deprecated: true
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clocks:
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maxItems: 1
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required:
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- compatible
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- interrupts
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- fsl,tempmon
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- nvmem-cells
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- nvmem-cell-names
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additionalProperties: false
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examples:
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- |
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#include <dt-bindings/clock/imx6sx-clock.h>
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#include <dt-bindings/interrupt-controller/arm-gic.h>
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efuse@21bc000 {
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#address-cells = <1>;
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#size-cells = <1>;
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compatible = "fsl,imx6sx-ocotp", "syscon";
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reg = <0x021bc000 0x4000>;
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clocks = <&clks IMX6SX_CLK_OCOTP>;
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tempmon_calib: calib@38 {
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reg = <0x38 4>;
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};
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tempmon_temp_grade: temp-grade@20 {
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reg = <0x20 4>;
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};
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};
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anatop@20c8000 {
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compatible = "fsl,imx6q-anatop", "syscon", "simple-mfd";
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reg = <0x020c8000 0x1000>;
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interrupts = <0 49 IRQ_TYPE_LEVEL_HIGH>,
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<0 54 IRQ_TYPE_LEVEL_HIGH>,
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<0 127 IRQ_TYPE_LEVEL_HIGH>;
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tempmon {
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compatible = "fsl,imx6sx-tempmon";
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interrupts = <GIC_SPI 49 IRQ_TYPE_LEVEL_HIGH>;
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fsl,tempmon = <&anatop>;
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nvmem-cells = <&tempmon_calib>, <&tempmon_temp_grade>;
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nvmem-cell-names = "calib", "temp_grade";
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clocks = <&clks IMX6SX_CLK_PLL3_USB_OTG>;
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};
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};
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