[PATCH] dt-bindings: timer: renesas: mtu2: Convert to json-schema

Geert Uytterhoeven
2020-05-28T13:30:43Z

Convert the Renesas Multi-Function Timer Pulse Unit 2 (MTU2) Device Tree
binding documentation to json-schema.

Add missing properties.
Update the example to match reality.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
.../bindings/timer/renesas,mtu2.txt | 42 ----------
.../bindings/timer/renesas,mtu2.yaml | 76 +++++++++++++++++++
2 files changed, 76 insertions(+), 42 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/timer/renesas,mtu2.txt
create mode 100644 Documentation/devicetree/bindings/timer/renesas,mtu2.yaml

diff --git a/Documentation/devicetree/bindings/timer/renesas,mtu2.txt b/Documentation/devicetree/bindings/timer/renesas,mtu2.txt
deleted file mode 100644
index ba0a34d97eb80261..0000000000000000
--- a/Documentation/devicetree/bindings/timer/renesas,mtu2.txt
+++ /dev/null
@@ -1,42 +0,0 @@
-* Renesas Multi-Function Timer Pulse Unit 2 (MTU2)
-
-The MTU2 is a multi-purpose, multi-channel timer/counter with configurable
-clock inputs and programmable compare match.
-
-Channels share hardware resources but their counter and compare match value
-are independent. The MTU2 hardware supports five channels indexed from 0 to 4.
-
-Required Properties:
-
- - compatible: must be one or more of the following:
- - "renesas,mtu2-r7s72100" for the r7s72100 MTU2
- - "renesas,mtu2" for any MTU2
- This is a fallback for the above renesas,mtu2-* entries
-
- - reg: base address and length of the registers block for the timer module.
-
- - interrupts: interrupt specifiers for the timer, one for each entry in
- interrupt-names.
- - interrupt-names: must contain one entry named "tgi?a" for each enabled
- channel, where "?" is the channel index expressed as one digit from "0" to
- "4".
-
- - clocks: a list of phandle + clock-specifier pairs, one for each entry
- in clock-names.
- - clock-names: must contain "fck" for the functional clock.
-
-
-Example: R7S72100 (RZ/A1H) MTU2 node
-
- mtu2: timer@fcff0000 {
- compatible = "renesas,mtu2-r7s72100", "renesas,mtu2";
- reg = <0xfcff0000 0x400>;
- interrupts = <0 139 IRQ_TYPE_LEVEL_HIGH>,
- <0 146 IRQ_TYPE_LEVEL_HIGH>,
- <0 150 IRQ_TYPE_LEVEL_HIGH>,
- <0 154 IRQ_TYPE_LEVEL_HIGH>,
- <0 159 IRQ_TYPE_LEVEL_HIGH>;
- interrupt-names = "tgi0a", "tgi1a", "tgi2a", "tgi3a", "tgi4a";
- clocks = <&mstp3_clks R7S72100_CLK_MTU2>;
- clock-names = "fck";
- };
diff --git a/Documentation/devicetree/bindings/timer/renesas,mtu2.yaml b/Documentation/devicetree/bindings/timer/renesas,mtu2.yaml
new file mode 100644
index 0000000000000000..15d8dddf4ae9555b
--- /dev/null
+++ b/Documentation/devicetree/bindings/timer/renesas,mtu2.yaml
@@ -0,0 +1,76 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/timer/renesas,mtu2.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Renesas Multi-Function Timer Pulse Unit 2 (MTU2)
+
+maintainers:
+ - Geert Uytterhoeven <geert+renesas@glider.be>
+ - Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
+
+description:
+ The MTU2 is a multi-purpose, multi-channel timer/counter with configurable clock inputs
+ and programmable compare match.
+
+ Channels share hardware resources but their counter and compare match value are
+ independent. The MTU2 hardware supports five channels indexed from 0 to 4.
+
+properties:
+ compatible:
+ items:
+ - enum:
+ - renesas,mtu2-r7s72100 # RZ/A1H
+ - const: renesas,mtu2
+
+ reg:
+ maxItems: 1
+
+ interrupts:
+ minItems: 1
+ maxItems: 5
+ description: One entry for each enabled channel.
+
+ interrupt-names:
+ minItems: 1
+ items:
+ - const: tgi0a
+ - const: tgi1a
+ - const: tgi2a
+ - const: tgi3a
+ - const: tgi4a
+
+ clocks:
+ maxItems: 1
+
+ clock-names:
+ const: fck
+
+ power-domains:
+ maxItems: 1
+
+required:
+ - compatible
+ - reg
+ - interrupts
+ - interrupt-names
+ - clocks
+ - clock-names
+ - power-domains
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/clock/r7s72100-clock.h>
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+ mtu2: timer@fcff0000 {
+ compatible = "renesas,mtu2-r7s72100", "renesas,mtu2";
+ reg = <0xfcff0000 0x400>;
+ interrupts = <GIC_SPI 107 IRQ_TYPE_LEVEL_HIGH>;
+ interrupt-names = "tgi0a";
+ clocks = <&mstp3_clks R7S72100_CLK_MTU2>;
+ clock-names = "fck";
+ power-domains = <&cpg_clocks>;
+ };
--
2.17.1