[PATCH v9 1/3] dt-bindings: i2c: npcm7xx: add NPCM I2C controller
From: Tali Perry <tali.perry1@gmail.com>
Date: 2020-03-23 13:45:59
Also in:
linux-devicetree, linux-i2c, lkml, openbmc
Subsystem:
arm/nuvoton npcm architecture, i2c subsystem host drivers, open firmware and flattened device tree bindings, the rest · Maintainers:
Andrew Jeffery, Avi Fishman, Tomer Maimon, Tali Perry, Andi Shyti, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
Added device tree binding documentation for Nuvoton BMC NPCM I2C controller. Signed-off-by: Tali Perry <tali.perry1@gmail.com> Reviewed-by: Rob Herring <robh@kernel.org> --- .../devicetree/bindings/i2c/i2c-npcm7xx.txt | 29 +++++++++++++++++++ 1 file changed, 29 insertions(+) create mode 100644 Documentation/devicetree/bindings/i2c/i2c-npcm7xx.txt
diff --git a/Documentation/devicetree/bindings/i2c/i2c-npcm7xx.txt b/Documentation/devicetree/bindings/i2c/i2c-npcm7xx.txt
new file mode 100644
index 000000000000..d36cc20742fd
--- /dev/null
+++ b/Documentation/devicetree/bindings/i2c/i2c-npcm7xx.txt@@ -0,0 +1,29 @@ +Nuvoton NPCM7XX I2C bus + +The NPCM750x includes sixteen I2C bus controllers. All Controllers support +both master and slave mode. Each controller has two 16 byte HW FIFO for TX and +RX. + +Required properties: +- compatible : must be "nuvoton,npcm750-i2c" +- reg : Offset and length of the register set for the device. +- interrupts : Contain the I2C interrupt with flags for falling edge. +- clocks : phandle of I2C reference clock. + +Optional: +- bus-frequency : Contain the I2C bus frequency, + the default I2C bus frequency is 100000. +- pinctrl-0 : for example <&smbX_pins>, X is module number + (on NPCM7XX it's 0 to 15) +- pinctrl-names : should be set to "default" +Example: + + i2c0: i2c@80000 { + compatible = "nuvoton,npcm750-i2c"; + reg = <0x80000 0x1000>; + clocks = <&clk NPCM7XX_CLK_APB2>; + bus-frequency = <100000>; + interrupts = <GIC_SPI 64 IRQ_TYPE_LEVEL_HIGH>; + pinctrl-names = "default"; + pinctrl-0 = <&smb0_pins>; + };
--
2.22.0
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