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Date: Fri, 23 Aug 2019 16:53:52 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Rob Herring <robh+dt@...nel.org>,
Mark Rutland <mark.rutland@....com>,
Krzysztof Kozlowski <krzk@...nel.org>,
Jonathan Cameron <jic23@...nel.org>,
Hartmut Knaack <knaack.h@....de>,
Lars-Peter Clausen <lars@...afoo.de>,
Peter Meerwald-Stadler <pmeerw@...erw.net>,
Alessandro Zummo <a.zummo@...ertech.it>,
Alexandre Belloni <alexandre.belloni@...tlin.com>,
Paweł Chmiel <pawel.mikolaj.chmiel@...il.com>,
devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-iio@...r.kernel.org, linux-rtc@...r.kernel.org
Cc: notify@...nel.org, Arnd Bergmann <arnd@...db.de>,
Olof Johansson <olof@...om.net>,
Marek Szyprowski <m.szyprowski@...sung.com>,
Tomasz Figa <tomasz.figa@...il.com>
Subject: [RFC 5/9] dt-bindings: arm: samsung: Convert Exynos PMU bindings to json-schema
Convert Samsung Exynos Power Management Unit (PMU) bindings to DT schema
format using json-schema.
Signed-off-by: Krzysztof Kozlowski <krzk@...nel.org>
---
.../devicetree/bindings/arm/samsung/pmu.txt | 72 --------------
.../devicetree/bindings/arm/samsung/pmu.yaml | 93 +++++++++++++++++++
2 files changed, 93 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@...40000 {
- 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..818c6f3488ef
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/samsung/pmu.yaml
@@ -0,0 +1,93 @@
+# 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@...nel.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
+ # TODO: what is the maximum number of elements (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
+
+ 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':
+ # TODO: must be identical to the that of the parent interrupt controller.
+ const: 3
+
+ # TODO: Mark interrupt-controller and #interrupt-cells as required, if one is present
+ # TODO: nodes defining the restart and poweroff syscon children
+
+required:
+ - compatible
+ - reg
+ - '#clock-cells'
+ - clock-names
+ - clocks
+
+examples:
+ - |
+ pmu_system_controller: system-controller@...40000 {
+ 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
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