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Message-Id: <20220122132554.65192-2-krzysztof.kozlowski@canonical.com>
Date: Sat, 22 Jan 2022 14:25:53 +0100
From: Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
To: "Rafael J. Wysocki" <rafael@...nel.org>,
Daniel Lezcano <daniel.lezcano@...aro.org>,
Amit Kucheria <amitk@...nel.org>,
Zhang Rui <rui.zhang@...el.com>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>,
Bartlomiej Zolnierkiewicz <bzolnier@...il.com>,
linux-pm@...r.kernel.org, devicetree@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org,
linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 2/3] dt-bindings: thermal: samsung: convert to dtschema
Convert the Samsung Exynos SoC Thermal Management Unit bindings to DT
schema format.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
---
.../bindings/thermal/exynos-thermal.txt | 106 ----------
.../thermal/samsung,exynos-thermal.yaml | 184 ++++++++++++++++++
2 files changed, 184 insertions(+), 106 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/thermal/exynos-thermal.txt
create mode 100644 Documentation/devicetree/bindings/thermal/samsung,exynos-thermal.yaml
diff --git a/Documentation/devicetree/bindings/thermal/exynos-thermal.txt b/Documentation/devicetree/bindings/thermal/exynos-thermal.txt
deleted file mode 100644
index 33004ce7e5df..000000000000
--- a/Documentation/devicetree/bindings/thermal/exynos-thermal.txt
+++ /dev/null
@@ -1,106 +0,0 @@
-* Exynos Thermal Management Unit (TMU)
-
-** Required properties:
-
-- compatible : One of the following:
- "samsung,exynos3250-tmu"
- "samsung,exynos4412-tmu"
- "samsung,exynos4210-tmu"
- "samsung,exynos5250-tmu"
- "samsung,exynos5260-tmu"
- "samsung,exynos5420-tmu" for TMU channel 0, 1 on Exynos5420
- "samsung,exynos5420-tmu-ext-triminfo" for TMU channels 2, 3 and 4
- Exynos5420 (Must pass triminfo base and triminfo clock)
- "samsung,exynos5433-tmu"
- "samsung,exynos7-tmu"
-- reg : Address range of the thermal registers. For soc's which has multiple
- instances of TMU and some registers are shared across all TMU's like
- interrupt related then 2 set of register has to supplied. First set
- belongs to register set of TMU instance and second set belongs to
- registers shared with the TMU instance.
-
- NOTE: On Exynos5420, the TRIMINFO register is misplaced for TMU
- channels 2, 3 and 4
- Use "samsung,exynos5420-tmu-ext-triminfo" in cases, there is a misplaced
- register, also provide clock to access that base.
-
- TRIMINFO at 0x1006c000 contains data for TMU channel 3
- TRIMINFO at 0x100a0000 contains data for TMU channel 4
- TRIMINFO at 0x10068000 contains data for TMU channel 2
-
-- interrupts : Should contain interrupt for thermal system
-- clocks : The main clocks for TMU device
- -- 1. operational clock for TMU channel
- -- 2. optional clock to access the shared registers of TMU channel
- -- 3. optional special clock for functional operation
-- clock-names : Thermal system clock name
- -- "tmu_apbif" operational clock for current TMU channel
- -- "tmu_triminfo_apbif" clock to access the shared triminfo register
- for current TMU channel
- -- "tmu_sclk" clock for functional operation of the current TMU
- channel
-
-The Exynos TMU supports generating interrupts when reaching given
-temperature thresholds. Number of supported thermal trip points depends
-on the SoC (only first trip points defined in DT will be configured):
- - most of SoC: 4
- - samsung,exynos5433-tmu: 8
- - samsung,exynos7-tmu: 8
-
-** Optional properties:
-
-- vtmu-supply: This entry is optional and provides the regulator node supplying
- voltage to TMU. If needed this entry can be placed inside
- board/platform specific dts file.
-
-Example 1):
-
- tmu@...c0000 {
- compatible = "samsung,exynos4412-tmu";
- interrupt-parent = <&combiner>;
- reg = <0x100C0000 0x100>;
- interrupts = <2 4>;
- clocks = <&clock 383>;
- clock-names = "tmu_apbif";
- vtmu-supply = <&tmu_regulator_node>;
- #thermal-sensor-cells = <0>;
- };
-
-Example 2): (In case of Exynos5420 "with misplaced TRIMINFO register")
- tmu_cpu2: tmu@...68000 {
- compatible = "samsung,exynos5420-tmu-ext-triminfo";
- reg = <0x10068000 0x100>, <0x1006c000 0x4>;
- interrupts = <0 184 0>;
- clocks = <&clock 318>, <&clock 318>;
- clock-names = "tmu_apbif", "tmu_triminfo_apbif";
- #thermal-sensor-cells = <0>;
- };
-
- tmu_cpu3: tmu@...6c000 {
- compatible = "samsung,exynos5420-tmu-ext-triminfo";
- reg = <0x1006c000 0x100>, <0x100a0000 0x4>;
- interrupts = <0 185 0>;
- clocks = <&clock 318>, <&clock 319>;
- clock-names = "tmu_apbif", "tmu_triminfo_apbif";
- #thermal-sensor-cells = <0>;
- };
-
- tmu_gpu: tmu@...a0000 {
- compatible = "samsung,exynos5420-tmu-ext-triminfo";
- reg = <0x100a0000 0x100>, <0x10068000 0x4>;
- interrupts = <0 215 0>;
- clocks = <&clock 319>, <&clock 318>;
- clock-names = "tmu_apbif", "tmu_triminfo_apbif";
- #thermal-sensor-cells = <0>;
- };
-
-Note: For multi-instance tmu each instance should have an alias correctly
-numbered in "aliases" node.
-
-Example:
-
-aliases {
- tmuctrl0 = &tmuctrl_0;
- tmuctrl1 = &tmuctrl_1;
- tmuctrl2 = &tmuctrl_2;
-};
diff --git a/Documentation/devicetree/bindings/thermal/samsung,exynos-thermal.yaml b/Documentation/devicetree/bindings/thermal/samsung,exynos-thermal.yaml
new file mode 100644
index 000000000000..17129f75d962
--- /dev/null
+++ b/Documentation/devicetree/bindings/thermal/samsung,exynos-thermal.yaml
@@ -0,0 +1,184 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/thermal/samsung,exynos-thermal.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Samsung Exynos SoC Thermal Management Unit (TMU)
+
+maintainers:
+ - Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
+
+description: |
+ For multi-instance tmu each instance should have an alias correctly numbered
+ in "aliases" node.
+
+properties:
+ compatible:
+ enum:
+ - samsung,exynos3250-tmu
+ - samsung,exynos4412-tmu
+ - samsung,exynos4210-tmu
+ - samsung,exynos5250-tmu
+ - samsung,exynos5260-tmu
+ # For TMU channel 0, 1 on Exynos5420:
+ - samsung,exynos5420-tmu
+ # For TMU channels 2, 3 and 4 of Exynos5420:
+ - samsung,exynos5420-tmu-ext-triminfo
+ - samsung,exynos5433-tmu
+ - samsung,exynos7-tmu
+
+ clocks:
+ minItems: 1
+ maxItems: 3
+
+ clock-names:
+ minItems: 1
+ maxItems: 3
+
+ interrupts:
+ description: |
+ The Exynos TMU supports generating interrupts when reaching given
+ temperature thresholds. Number of supported thermal trip points depends
+ on the SoC (only first trip points defined in DT will be configured)::
+ - most of SoC: 4
+ - samsung,exynos5433-tmu: 8
+ - samsung,exynos7-tmu: 8
+ maxItems: 1
+
+ reg:
+ items:
+ - description: TMU instance registers.
+ - description: |
+ Shared TMU registers.
+
+ Note:: On Exynos5420, the TRIMINFO register is misplaced for TMU
+ channels 2, 3 and 4 Use "samsung,exynos5420-tmu-ext-triminfo" in
+ cases, there is a misplaced register, also provide clock to access
+ that base.
+ TRIMINFO at 0x1006c000 contains data for TMU channel 3
+ TRIMINFO at 0x100a0000 contains data for TMU channel 4
+ TRIMINFO at 0x10068000 contains data for TMU channel 2
+ minItems: 1
+
+ '#thermal-sensor-cells': true
+
+ vtmu-supply:
+ description: The regulator node supplying voltage to TMU.
+
+required:
+ - compatible
+ - clocks
+ - clock-names
+ - interrupts
+ - reg
+
+allOf:
+ - $ref: /schemas/thermal/thermal-sensor.yaml
+ - if:
+ properties:
+ compatible:
+ contains:
+ const: samsung,exynos5420-tmu-ext-triminfo
+ then:
+ properties:
+ clocks:
+ items:
+ - description:
+ Operational clock for TMU channel.
+ - description:
+ Optional clock to access the shared registers (e.g. TRIMINFO) of TMU
+ channel.
+ clock-names:
+ items:
+ - const: tmu_apbif
+ - const: tmu_triminfo_apbif
+ reg:
+ minItems: 2
+ maxItems: 2
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - samsung,exynos5433-tmu
+ - samsung,exynos7-tmu
+ then:
+ properties:
+ clocks:
+ items:
+ - description:
+ Operational clock for TMU channel.
+ - description:
+ Optional special clock for functional operation of TMU channel.
+ clock-names:
+ items:
+ - const: tmu_apbif
+ - const: tmu_sclk
+ reg:
+ minItems: 1
+ maxItems: 1
+
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - samsung,exynos3250-tmu
+ - samsung,exynos4412-tmu
+ - samsung,exynos4210-tmu
+ - samsung,exynos5250-tmu
+ - samsung,exynos5260-tmu
+ - samsung,exynos5420-tmu
+ then:
+ properties:
+ clocks:
+ minItems: 1
+ maxItems: 1
+ reg:
+ minItems: 1
+ maxItems: 1
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/clock/exynos4.h>
+
+ tmu@...c0000 {
+ compatible = "samsung,exynos4412-tmu";
+ reg = <0x100C0000 0x100>;
+ interrupt-parent = <&combiner>;
+ interrupts = <2 4>;
+ #thermal-sensor-cells = <0>;
+ clocks = <&clock CLK_TMU_APBIF>;
+ clock-names = "tmu_apbif";
+ vtmu-supply = <&ldo10_reg>;
+ };
+
+ - |
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+ tmu@...68000 {
+ compatible = "samsung,exynos5420-tmu-ext-triminfo";
+ reg = <0x10068000 0x100>, <0x1006c000 0x4>;
+ interrupts = <GIC_SPI 184 IRQ_TYPE_LEVEL_HIGH>;
+ #thermal-sensor-cells = <0>;
+ clocks = <&clock 318>, <&clock 318>; /* CLK_TMU */
+ clock-names = "tmu_apbif", "tmu_triminfo_apbif";
+ vtmu-supply = <&ldo7_reg>;
+ };
+
+ - |
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+ tmu@...60000 {
+ compatible = "samsung,exynos5433-tmu";
+ reg = <0x10060000 0x200>;
+ interrupts = <GIC_SPI 95 IRQ_TYPE_LEVEL_HIGH>;
+ #thermal-sensor-cells = <0>;
+ clocks = <&cmu_peris 3>, /* CLK_PCLK_TMU0_APBIF */
+ <&cmu_peris 35>; /* CLK_SCLK_TMU0 */
+ clock-names = "tmu_apbif", "tmu_sclk";
+ vtmu-supply = <&ldo3_reg>;
+ };
--
2.32.0
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