[PATCH v3 1/2] dt-bindings: i2c: spacemit: add support for K1 SoC
Troy Mitchell
troymitchell988 at gmail.com
Mon Nov 11 19:07:39 PST 2024
From: Troy Mitchell <troymitchell988 at gmail.com>
The I2C of K1 supports fast-speed-mode and high-speed-mode,
and supports FIFO transmission.
Signed-off-by: Troy Mitchell <TroyMitchell988 at gmail.com>
---
.../devicetree/bindings/i2c/spacemit,k1-i2c.yaml | 52 ++++++++++++++++++++++
1 file changed, 52 insertions(+)
diff --git a/Documentation/devicetree/bindings/i2c/spacemit,k1-i2c.yaml b/Documentation/devicetree/bindings/i2c/spacemit,k1-i2c.yaml
new file mode 100644
index 000000000000..e8cce360bf03
--- /dev/null
+++ b/Documentation/devicetree/bindings/i2c/spacemit,k1-i2c.yaml
@@ -0,0 +1,52 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/i2c/spacemit,k1-i2c.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: I2C controller embedded in SpacemiT's K1 SoC
+
+maintainers:
+ - Troy Mitchell <troymitchell988 at gmail.com>
+
+properties:
+ compatible:
+ const: spacemit,k1-i2c
+
+ reg:
+ maxItems: 1
+
+ interrupts:
+ maxItems: 1
+
+ clocks:
+ maxItems: 1
+
+ clock-frequency:
+ description:
+ Desired I2C bus clock frequency in Hz.
+ K1 supports standard, fast, high-speed modes, from 1 to 3300000.
+ default: 100000
+ minimum: 1
+ maximum: 3300000
+
+required:
+ - compatible
+ - reg
+ - interrupts
+ - clocks
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ i2c at d4010800 {
+ compatible = "spacemit,k1-i2c";
+ reg = <0xd4010800 0x38>;
+ interrupt-parent = <&plic>;
+ interrupts = <36>;
+ clocks = <&ccu 90>;
+ clock-frequency = <100000>;
+ };
+
+...
--
2.34.1
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