[PATCH v29 2/4] dt-bindings: i2c: ast2600-i2c.yaml: Add global-regs properties

Ryan Chen
2026-04-15T05:14:09Z

Add the aspeed,global-regs phandle to reference the AST2600 global
registers syscon node, containing the SoC-common I2C register set.

These properties apply only to the AST2600 binding. Legacy DTs remain
unchanged.

Signed-off-by: Ryan Chen <ryan_chen@aspeedtech.com>
---
Changes in v29:
- remove aspeed,enable-dma properties.

Changes in v28:
- update commit message correspond with aspeed,enable-dma.
- remove aspeed,transfer-mode and add aspeed,enable-dma property and
description.
- Fix aspeed,enable-dma description to reflect hardware capability rather
than software behavior

Changes in v27:
- change aspeed,transfer-mode to aspeed,enable-dma.
---
Documentation/devicetree/bindings/i2c/aspeed,ast2600-i2c.yaml | 7 +++++++
1 file changed, 7 insertions(+)

diff --git a/Documentation/devicetree/bindings/i2c/aspeed,ast2600-i2c.yaml b/Documentation/devicetree/bindings/i2c/aspeed,ast2600-i2c.yaml
index de2c359037da..0c769efb76a5 100644
--- a/Documentation/devicetree/bindings/i2c/aspeed,ast2600-i2c.yaml
+++ b/Documentation/devicetree/bindings/i2c/aspeed,ast2600-i2c.yaml
@@ -37,6 +37,12 @@ properties:
resets:
maxItems: 1

+ aspeed,global-regs:
+ $ref: /schemas/types.yaml#/definitions/phandle
+ description:
+ Phandle reference to the i2c global syscon node, containing the
+ SoC-common i2c register set.
+
required:
- reg
- compatible
@@ -59,4 +65,5 @@ examples:
resets = <&syscon ASPEED_RESET_I2C>;
clock-frequency = <100000>;
interrupts = <GIC_SPI 110 IRQ_TYPE_LEVEL_HIGH>;
+ aspeed,global-regs = <&i2c_global>;
};

--
2.34.1