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Message-Id: <20211110194959.20611-1-fparent@baylibre.com>
Date: Wed, 10 Nov 2021 20:49:56 +0100
From: Fabien Parent <fparent@...libre.com>
To: Qii Wang <qii.wang@...iatek.com>, Rob Herring <robh+dt@...nel.org>,
Matthias Brugger <matthias.bgg@...il.com>
Cc: Fabien Parent <fparent@...libre.com>, linux-i2c@...r.kernel.org,
devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH v3 1/4] dt-bindings: i2c: i2c-mt65xx: convert doc to yaml schema format
Convert the binding documentation for i2c-mt65xx driver to the
YAML schema format.
Signed-off-by: Fabien Parent <fparent@...libre.com>
---
v3:
* rebased: added new compatible since last revision + added vbus-supply
description
* added clock-div description
v2:
* write compatibles in a more compact way
* set the node pattern to be "^i2c@[0-9a-f]+$" instead of
"^i2c[0-9]*@[0-9a-f]+"$
.../devicetree/bindings/i2c/i2c-mt65xx.txt | 51 ---------
.../devicetree/bindings/i2c/i2c-mt65xx.yaml | 106 ++++++++++++++++++
2 files changed, 106 insertions(+), 51 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/i2c/i2c-mt65xx.txt
create mode 100644 Documentation/devicetree/bindings/i2c/i2c-mt65xx.yaml
diff --git a/Documentation/devicetree/bindings/i2c/i2c-mt65xx.txt b/Documentation/devicetree/bindings/i2c/i2c-mt65xx.txt
deleted file mode 100644
index 5ea216ae7084..000000000000
--- a/Documentation/devicetree/bindings/i2c/i2c-mt65xx.txt
+++ /dev/null
@@ -1,51 +0,0 @@
-* MediaTek's I2C controller
-
-The MediaTek's I2C controller is used to interface with I2C devices.
-
-Required properties:
- - compatible: value should be either of the following.
- "mediatek,mt2701-i2c", "mediatek,mt6577-i2c": for MediaTek MT2701
- "mediatek,mt2712-i2c": for MediaTek MT2712
- "mediatek,mt6577-i2c": for MediaTek MT6577
- "mediatek,mt6589-i2c": for MediaTek MT6589
- "mediatek,mt6797-i2c", "mediatek,mt6577-i2c": for MediaTek MT6797
- "mediatek,mt7622-i2c": for MediaTek MT7622
- "mediatek,mt7623-i2c", "mediatek,mt6577-i2c": for MediaTek MT7623
- "mediatek,mt7629-i2c", "mediatek,mt2712-i2c": for MediaTek MT7629
- "mediatek,mt8173-i2c": for MediaTek MT8173
- "mediatek,mt8183-i2c": for MediaTek MT8183
- "mediatek,mt8192-i2c": for MediaTek MT8192
- "mediatek,mt8195-i2c", "mediatek,mt8192-i2c": for MediaTek MT8195
- "mediatek,mt8516-i2c", "mediatek,mt2712-i2c": for MediaTek MT8516
- - reg: physical base address of the controller and dma base, length of memory
- mapped region.
- - interrupts: interrupt number to the cpu.
- - clock-div: the fixed value for frequency divider of clock source in i2c
- module. Each IC may be different.
- - clocks: clock name from clock manager
- - clock-names: Must include "main" and "dma", "arb" is for multi-master that
- one bus has more than two i2c controllers, if enable have-pmic need include
- "pmic" extra.
-
-Optional properties:
- - clock-frequency: Frequency in Hz of the bus when transfer, the default value
- is 100000.
- - mediatek,have-pmic: platform can control i2c form special pmic side.
- Only mt6589 and mt8135 support this feature.
- - mediatek,use-push-pull: IO config use push-pull mode.
- - vbus-supply: phandle to the regulator that provides power to SCL/SDA.
-
-Example:
-
- i2c0: i2c@...0d000 {
- compatible = "mediatek,mt6577-i2c";
- reg = <0x1100d000 0x70>,
- <0x11000300 0x80>;
- interrupts = <GIC_SPI 44 IRQ_TYPE_LEVEL_LOW>;
- clock-frequency = <400000>;
- mediatek,have-pmic;
- clock-div = <16>;
- clocks = <&i2c0_ck>, <&ap_dma_ck>;
- clock-names = "main", "dma";
- };
-
diff --git a/Documentation/devicetree/bindings/i2c/i2c-mt65xx.yaml b/Documentation/devicetree/bindings/i2c/i2c-mt65xx.yaml
new file mode 100644
index 000000000000..af0880fcc22b
--- /dev/null
+++ b/Documentation/devicetree/bindings/i2c/i2c-mt65xx.yaml
@@ -0,0 +1,106 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/i2c/i2c-mt65xx.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: MediaTek I2C Controller
+
+maintainers:
+ - Qii Wang <qii.wang@...iatek.com>
+ - Matthias Brugger <matthias.bgg@...il.com>
+
+allOf:
+ - $ref: /schemas/i2c/i2c-controller.yaml#
+
+properties:
+ $nodename:
+ pattern: "^i2c@[0-9a-f]+$"
+
+ compatible:
+ oneOf:
+ - enum:
+ - mediatek,mt2712-i2c
+ - mediatek,mt6577-i2c
+ - mediatek,mt6589-i2c
+ - mediatek,mt7622-i2c
+ - mediatek,mt8173-i2c
+ - mediatek,mt8183-i2c
+ - mediatek,mt8192-i2c
+ - items:
+ - enum:
+ - mediatek,mt2701-i2c
+ - mediatek,mt6797-i2c
+ - mediatek,mt7623-i2c
+ - const: mediatek,mt6577-i2c
+ - items:
+ - enum:
+ - mediatek,mt7629-i2c
+ - mediatek,mt8516-i2c
+ - const: mediatek,mt2712-i2c
+ - items:
+ - enum:
+ - mediatek,mt8195-i2c
+ - const: mediatek,mt8192-i2c
+
+ clocks:
+ minItems: 2
+ maxItems: 4
+ items:
+ - description: Controller clock
+ - description: DMA clock
+ - description: ARB clock for multi-master when a bus has more than
+ one i2c controllers
+ - description: PMIC clock. Only when mediatek,have-pmic is set.
+
+ clock-names:
+ minItems: 2
+ maxItems: 4
+ items:
+ - const: main
+ - const: dma
+ - const: arb
+ - const: pmic
+
+ mediatek,have-pmic:
+ $ref: /schemas/types.yaml#/definitions/flag
+ description: Platform can control I2C from the PMIC
+
+ mediatek,use-push-pull:
+ $ref: /schemas/types.yaml#/definitions/flag
+ description: IO config use push-pull mode.
+
+ vbus-supply:
+ $ref: /schemas/types.yaml#/definitions/phandle
+ description: phandle to the regulator that provides power to SCL/SDA.
+
+ clock-div:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description: Fixed frequency divider for I2C clock source.
+ minimum: 1
+
+required:
+ - compatible
+ - reg
+ - interrupts
+ - clocks
+ - clock-names
+ - clock-div
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/irq.h>
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+ i2c0: i2c@...0d000 {
+ compatible = "mediatek,mt6577-i2c";
+ reg = <0x1100d000 0x70>,
+ <0x11000300 0x80>;
+ interrupts = <GIC_SPI 44 IRQ_TYPE_LEVEL_LOW>;
+ clock-frequency = <400000>;
+ mediatek,have-pmic;
+ clock-div = <16>;
+ clocks = <&i2c0_ck>, <&ap_dma_ck>;
+ clock-names = "main", "dma";
+ };
--
2.33.1
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