Commit 93d17247 authored by Tim Kryger's avatar Tim Kryger Committed by Wolfram Sang
Browse files

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
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>;
};
......@@ -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
......
......@@ -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
......
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