[PATCH v2 07/11] dt-bindings: arm: samsung: Convert Exynos PMU bindings to json-schema

Krzysztof Kozlowski
2019-09-07T09:20:58Z

Convert Samsung Exynos Power Management Unit (PMU) bindings to DT schema
format using json-schema.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>

---

Changes since v1:
1. Fix clock-names to match all elements against schema (any number of
any clkoutN values).
This currently fails:
properties:clock-names:items: {'enum': ['clkout0', 'clkout1', 'clkout2',
'clkout3', 'clkout4', 'clkout5', 'clkout6', 'clkout7', 'clkout8',
'clkout9', 'clkout10', 'clkout11', 'clkout12', 'clkout13', 'clkout14',
'clkout15', 'clkout16']} is not of type 'array

2. Add syscon reboot and poweroff nodes.
---
.../devicetree/bindings/arm/samsung/pmu.txt | 72 -----------
.../devicetree/bindings/arm/samsung/pmu.yaml | 117 ++++++++++++++++++
2 files changed, 117 insertions(+), 72 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/arm/samsung/pmu.txt
create mode 100644 Documentation/devicetree/bindings/arm/samsung/pmu.yaml

diff --git a/Documentation/devicetree/bindings/arm/samsung/pmu.txt b/Documentation/devicetree/bindings/arm/samsung/pmu.txt
deleted file mode 100644
index 433bfd7593ac..000000000000
--- a/Documentation/devicetree/bindings/arm/samsung/pmu.txt
+++ /dev/null
@@ -1,72 +0,0 @@
-SAMSUNG Exynos SoC series PMU Registers
-
-Properties:
- - compatible : should contain two values. First value must be one from following list:
- - "samsung,exynos3250-pmu" - for Exynos3250 SoC,
- - "samsung,exynos4210-pmu" - for Exynos4210 SoC,
- - "samsung,exynos4412-pmu" - for Exynos4412 SoC,
- - "samsung,exynos5250-pmu" - for Exynos5250 SoC,
- - "samsung,exynos5260-pmu" - for Exynos5260 SoC.
- - "samsung,exynos5410-pmu" - for Exynos5410 SoC,
- - "samsung,exynos5420-pmu" - for Exynos5420 SoC.
- - "samsung,exynos5433-pmu" - for Exynos5433 SoC.
- - "samsung,exynos7-pmu" - for Exynos7 SoC.
- second value must be always "syscon".
-
- - reg : offset and length of the register set.
-
- - #clock-cells : must be <1>, since PMU requires once cell as clock specifier.
- The single specifier cell is used as index to list of clocks
- provided by PMU, which is currently:
- 0 : SoC clock output (CLKOUT pin)
-
- - clock-names : list of clock names for particular CLKOUT mux inputs in
- following format:
- "clkoutN", where N is a decimal number corresponding to
- CLKOUT mux control bits value for given input, e.g.
- "clkout0", "clkout7", "clkout15".
-
- - clocks : list of phandles and specifiers to all input clocks listed in
- clock-names property.
-
-Optional properties:
-
-Some PMUs are capable of behaving as an interrupt controller (mostly
-to wake up a suspended PMU). In which case, they can have the
-following properties:
-
-- interrupt-controller: indicate that said PMU is an interrupt controller
-
-- #interrupt-cells: must be identical to the that of the parent interrupt
- controller.
-
-
-Optional nodes:
-
-- nodes defining the restart and poweroff syscon children
-
-
-Example :
-pmu_system_controller: system-controller@10040000 {
- compatible = "samsung,exynos5250-pmu", "syscon";
- reg = <0x10040000 0x5000>;
- interrupt-controller;
- #interrupt-cells = <3>;
- interrupt-parent = <&gic>;
- #clock-cells = <1>;
- clock-names = "clkout0", "clkout1", "clkout2", "clkout3",
- "clkout4", "clkout8", "clkout9";
- clocks = <&clock CLK_OUT_DMC>, <&clock CLK_OUT_TOP>,
- <&clock CLK_OUT_LEFTBUS>, <&clock CLK_OUT_RIGHTBUS>,
- <&clock CLK_OUT_CPU>, <&clock CLK_XXTI>,
- <&clock CLK_XUSBXTI>;
-};
-
-Example of clock consumer :
-
-usb3503: usb3503@8 {
- /* ... */
- clock-names = "refclk";
- clocks = <&pmu_system_controller 0>;
- /* ... */
-};
diff --git a/Documentation/devicetree/bindings/arm/samsung/pmu.yaml b/Documentation/devicetree/bindings/arm/samsung/pmu.yaml
new file mode 100644
index 000000000000..a5a02f8237fb
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/samsung/pmu.yaml
@@ -0,0 +1,117 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/arm/samsung/pmu.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Samsung Exynos SoC series Power Management Unit (PMU)
+
+maintainers:
+ - Krzysztof Kozlowski <krzk@kernel.org>
+
+properties:
+ compatible:
+ items:
+ - enum:
+ - samsung,exynos3250-pmu
+ - samsung,exynos4210-pmu
+ - samsung,exynos4412-pmu
+ - samsung,exynos5250-pmu
+ - samsung,exynos5260-pmu
+ - samsung,exynos5410-pmu
+ - samsung,exynos5420-pmu
+ - samsung,exynos5433-pmu
+ - samsung,exynos7-pmu
+ - const: syscon
+
+ reg:
+ maxItems: 1
+
+ '#clock-cells':
+ const: 1
+
+ clock-names:
+ description:
+ List of clock names for particular CLKOUT mux inputs
+ minItems: 1
+ maxItems: 32
+ items:
+ enum:
+ - clkout0
+ - clkout1
+ - clkout2
+ - clkout3
+ - clkout4
+ - clkout5
+ - clkout6
+ - clkout7
+ - clkout8
+ - clkout9
+ - clkout10
+ - clkout11
+ - clkout12
+ - clkout13
+ - clkout14
+ - clkout15
+ - clkout16
+ - clkout17
+ - clkout18
+ - clkout19
+ - clkout20
+ - clkout21
+ - clkout22
+ - clkout23
+ - clkout24
+ - clkout25
+ - clkout26
+ - clkout27
+ - clkout28
+ - clkout29
+ - clkout30
+ - clkout31
+
+ clocks:
+ minItems: 1
+ maxItems: 32
+
+ interrupt-controller:
+ description:
+ Some PMUs are capable of behaving as an interrupt controller (mostly
+ to wake up a suspended PMU).
+
+ '#interrupt-cells':
+ description:
+ Must be identical to the that of the parent interrupt controller.
+ const: 3
+
+ syscon-poweroff:
+ $ref: "../../power/reset/syscon-poweroff.yaml#"
+ type: object
+ description:
+ Node for power off method
+
+ syscon-reboot:
+ $ref: "../../power/reset/syscon-reboot.yaml#"
+ type: object
+ description:
+ Node for reboot method
+
+required:
+ - compatible
+ - reg
+ - '#clock-cells'
+ - clock-names
+ - clocks
+
+examples:
+ - |
+ pmu_system_controller: system-controller@10040000 {
+ compatible = "samsung,exynos5250-pmu", "syscon";
+ reg = <0x10040000 0x5000>;
+ interrupt-controller;
+ #interrupt-cells = <3>;
+ interrupt-parent = <&gic>;
+ #clock-cells = <1>;
+ clock-names = "clkout16";
+ clocks = <&clock 0>; // CLK_FIN_PLL
+ };
--
2.17.1