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Commit ba92222e authored by Zubair Lutfullah Kakakhel's avatar Zubair Lutfullah Kakakhel Committed by Wolfram Sang
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i2c: jz4780: Add i2c bus controller driver for Ingenic JZ4780 



Adds the i2c bus controller driver for the Ingenic JZ4780 SoC.

Signed-off-by: default avatarZubair Lutfullah Kakakhel <Zubair.Kakakhel@imgtec.com>
Signed-off-by: default avatarWolfram Sang <wsa@the-dreams.de>
parent 3b10db23

Documentation/devicetree/bindings/i2c/i2c-jz4780.txt

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* Ingenic JZ4780 I2C Bus controller



Required properties:

- compatible: should be "ingenic,jz4780-i2c"

- reg: Should contain the address & size of the I2C controller registers.

- interrupts: Should specify the interrupt provided by parent.

- clocks: Should contain a single clock specifier for the JZ4780 I2C clock.

- clock-frequency: desired I2C bus clock frequency in Hz.



Recommended properties:

- pinctrl-names: should be "default";

- pinctrl-0: phandle to pinctrl function



Optional properties:

- interrupt-parent: Should be the phandle of the interrupt controller that

  delivers interrupts to the I2C block.



Example



/ {

	i2c4: i2c4@0x10054000 {

		compatible = "ingenic,jz4780-i2c";

		reg = <0x10054000 0x1000>;



		interrupt-parent = <&intc>;

		interrupts = <56>;



		clocks = <&cgu JZ4780_CLK_SMB4>;

		clock-frequency = <100000>;

		pinctrl-names = "default";

		pinctrl-0 = <&pins_i2c4_data>;



	};

};

drivers/i2c/busses/Kconfig

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@@ -583,6 +583,15 @@ config I2C_IOP3XX 
	  This driver can also be built as a module.  If so, the module

	  will be called i2c-iop3xx.



config I2C_JZ4780

	tristate "JZ4780 I2C controller interface support"

	depends on MACH_JZ4780 || COMPILE_TEST

	help

	 If you say yes to this option, support will be included for the

	 Ingenic JZ4780 I2C controller.



	 If you don't know what to do here, say N.



config I2C_KEMPLD

	tristate "Kontron COM I2C Controller"

	depends on MFD_KEMPLD

drivers/i2c/busses/Makefile

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@@ -56,6 +56,7 @@ obj-$(CONFIG_I2C_IBM_IIC) += i2c-ibm_iic.o 
obj-$(CONFIG_I2C_IMG)		+= i2c-img-scb.o

obj-$(CONFIG_I2C_IMX)		+= i2c-imx.o

obj-$(CONFIG_I2C_IOP3XX)	+= i2c-iop3xx.o

obj-$(CONFIG_I2C_JZ4780)	+= i2c-jz4780.o

obj-$(CONFIG_I2C_KEMPLD)	+= i2c-kempld.o

obj-$(CONFIG_I2C_MESON)		+= i2c-meson.o

obj-$(CONFIG_I2C_MPC)		+= i2c-mpc.o

drivers/i2c/busses/i2c-jz4780.c

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File added.

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