[PATCH v6 1/2] dt-bindings: i2c: aspeed: support for AST2600-i2cv2

Ryan Chen
2023-02-26T05:03:47Z

Add ast2600-i2cv2 compatible and aspeed,global-regs, aspeed,timeout
aspeed,xfer-mode description for ast2600-i2cv2.

Signed-off-by: Ryan Chen <ryan_chen@aspeedtech.com>
---
.../devicetree/bindings/i2c/aspeed,i2c.yaml | 44 +++++++++++++++++++
1 file changed, 44 insertions(+)

diff --git a/Documentation/devicetree/bindings/i2c/aspeed,i2c.yaml b/Documentation/devicetree/bindings/i2c/aspeed,i2c.yaml
index f597f73ccd87..75de3ce41cf5 100644
--- a/Documentation/devicetree/bindings/i2c/aspeed,i2c.yaml
+++ b/Documentation/devicetree/bindings/i2c/aspeed,i2c.yaml
@@ -49,6 +49,25 @@ properties:
description:
states that there is another master active on this bus

+ aspeed,timeout:
+ type: boolean
+ description: I2C bus timeout enable for master/slave mode
+
+ aspeed,xfer-mode:
+ description: |
+ I2C bus transfer mode selection.
+ - "byte": I2C bus byte transfer mode.
+ - "buffered": I2C bus buffer register transfer mode.
+ - "dma": I2C bus dma transfer mode (default)
+ items:
+ enum: [byte, buffered, dma]
+ maxItems: 1
+ $ref: /schemas/types.yaml#/definitions/non-unique-string-array
+
+ aspeed,global-regs:
+ $ref: /schemas/types.yaml#/definitions/phandle
+ description: The phandle of i2c global register node.
+
required:
- reg
- compatible
@@ -57,6 +76,19 @@ required:

unevaluatedProperties: false

+if:
+ properties:
+ compatible:
+ contains:
+ const: aspeed,ast2600-i2cv2
+
+then:
+ properties:
+ reg:
+ minItems: 2
+ required:
+ - aspeed,global-regs
+
examples:
- |
#include <dt-bindings/clock/aspeed-clock.h>
@@ -71,3 +103,15 @@ examples:
interrupts = <0>;
interrupt-parent = <&i2c_ic>;
};
+ - |
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+ i2c1: i2c@80 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "aspeed,ast2600-i2cv2";
+ reg = <0x80 0x80>, <0xc00 0x20>;
+ interrupts = <GIC_SPI 110 IRQ_TYPE_LEVEL_HIGH>;
+ aspeed,global-regs = <&i2c_global>;
+ clocks = <&syscon ASPEED_CLK_APB>;
+ resets = <&syscon ASPEED_RESET_I2C>;
+ };
--
2.34.1