From 4058f6dc3b8ec631865f63e59fb79e86145243a4 Mon Sep 17 00:00:00 2001 From: Baolin Wang Date: Tue, 29 Aug 2017 11:35:03 +0800 Subject: [PATCH] dt-bindings: i2c: Add Spreadtrum I2C controller documentation This patch adds the binding documentation for Spreadtrum I2C controller device. Signed-off-by: Baolin Wang Acked-by: Rob Herring Signed-off-by: Wolfram Sang --- .../devicetree/bindings/i2c/i2c-sprd.txt | 31 +++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 Documentation/devicetree/bindings/i2c/i2c-sprd.txt diff --git a/Documentation/devicetree/bindings/i2c/i2c-sprd.txt b/Documentation/devicetree/bindings/i2c/i2c-sprd.txt new file mode 100644 index 000000000000..60b7cda15dd2 --- /dev/null +++ b/Documentation/devicetree/bindings/i2c/i2c-sprd.txt @@ -0,0 +1,31 @@ +I2C for Spreadtrum platforms + +Required properties: +- compatible: Should be "sprd,sc9860-i2c". +- reg: Specify the physical base address of the controller and length + of memory mapped region. +- interrupts: Should contain I2C interrupt. +- clock-names: Should contain following entries: + "i2c" for I2C clock, + "source" for I2C source (parent) clock, + "enable" for I2C module enable clock. +- clocks: Should contain a clock specifier for each entry in clock-names. +- clock-frequency: Constains desired I2C bus clock frequency in Hz. +- #address-cells: Should be 1 to describe address cells for I2C device address. +- #size-cells: Should be 0 means no size cell for I2C device address. + +Optional properties: +- Child nodes conforming to I2C bus binding + +Examples: +i2c0: i2c@70500000 { + compatible = "sprd,sc9860-i2c"; + reg = <0 0x70500000 0 0x1000>; + interrupts = ; + clock-names = "i2c", "source", "enable"; + clocks = <&clk_i2c3>, <&ext_26m>, <&clk_ap_apb_gates 11>; + clock-frequency = <400000>; + #address-cells = <1>; + #size-cells = <0>; +}; + -- 2.20.1