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Commit 93d17247 authored by Tim Kryger's avatar Tim Kryger Committed by Wolfram Sang
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i2c: bcm-kona: Introduce Broadcom I2C Driver 



Introduce support for Broadcom Serial Controller (BSC) I2C bus found
in the Kona family of Mobile SoCs.  FIFO hardware is utilized but only
standard mode (100kHz), fast mode (400kHz), fast mode plus (1MHz), and
I2C high-speed (3.4 MHz) bus speeds are supported.

Signed-off-by: default avatarTim Kryger <tim.kryger@linaro.org>
Reviewed-by: default avatarMatt Porter <matt.porter@linaro.org>
Reviewed-by: default avatarMarkus Mayer <markus.mayer@linaro.org>
[wsa: fixed Kconfig sorting, squashed broken out patches into one]
Signed-off-by: default avatarWolfram Sang <wsa@the-dreams.de>
parent de546c8a

Documentation/devicetree/bindings/i2c/i2c-bcm-kona.txt

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Broadcom Kona Family I2C

=========================



This I2C controller is used in the following Broadcom SoCs:



  BCM11130

  BCM11140

  BCM11351

  BCM28145

  BCM28155



Required Properties

-------------------

- compatible: "brcm,bcm11351-i2c", "brcm,kona-i2c"

- reg: Physical base address and length of controller registers

- interrupts: The interrupt number used by the controller

- clocks: clock specifier for the kona i2c external clock

- clock-frequency: The I2C bus frequency in Hz

- #address-cells: Should be <1>

- #size-cells: Should be <0>



Refer to clocks/clock-bindings.txt for generic clock consumer

properties.



Example:



i2c@3e016000 {

	compatible = "brcm,bcm11351-i2c","brcm,kona-i2c";

	reg = <0x3e016000 0x80>;

	interrupts = <GIC_SPI 103 IRQ_TYPE_LEVEL_HIGH>;

	clocks = <&bsc1_clk>;

	clock-frequency = <400000>;

	#address-cells = <1>;

	#size-cells = <0>;

};

drivers/i2c/busses/Kconfig

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@@ -346,6 +346,16 @@ config I2C_BCM2835 
	  This support is also available as a module.  If so, the module

	  will be called i2c-bcm2835.



config I2C_BCM_KONA

	tristate "BCM Kona I2C adapter"

	depends on ARCH_BCM_MOBILE

	default y

	help

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

	  I2C interface on the Broadcom Kona family of processors.



	  If you do not need KONA I2C inteface, say N.



config I2C_BLACKFIN_TWI

	tristate "Blackfin TWI I2C support"

	depends on BLACKFIN

drivers/i2c/busses/Makefile

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@@ -89,6 +89,7 @@ obj-$(CONFIG_I2C_VIPERBOARD) += i2c-viperboard.o 


# Other I2C/SMBus bus drivers

obj-$(CONFIG_I2C_ACORN)		+= i2c-acorn.o

obj-$(CONFIG_I2C_BCM_KONA)	+= i2c-bcm-kona.o

obj-$(CONFIG_I2C_ELEKTOR)	+= i2c-elektor.o

obj-$(CONFIG_I2C_PCA_ISA)	+= i2c-pca-isa.o

obj-$(CONFIG_I2C_SIBYTE)	+= i2c-sibyte.o

drivers/i2c/busses/i2c-bcm-kona.c

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File added.

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