From 79b2d0bb2eae09602448f7a7cb56530d2f31e6c6 Mon Sep 17 00:00:00 2001 From: Stefan Roese Date: Tue, 20 Feb 2007 10:27:08 +0100 Subject: [PATCH] PPC4xx: Add support for multiple I2C busses This patch adds support for multiple I2C busses on the PPC4xx platforms. Define CONFIG_I2C_MULTI_BUS in the board config file to make use of this feature. It also merges the 405 and 440 i2c header files into one common file 4xx_i2c.h. Also the 4xx i2c reset procedure is reworked since I experienced some problems with the first access on the 440SPe Katmai board. Signed-off-by: Stefan Roese --- include/i2c.h | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'include/i2c.h') diff --git a/include/i2c.h b/include/i2c.h index a8f729afe..54c6f9fbc 100644 --- a/include/i2c.h +++ b/include/i2c.h @@ -46,6 +46,16 @@ */ #define I2C_RXTX_LEN 128 /* maximum tx/rx buffer length */ +#if defined(CONFIG_I2C_MULTI_BUS) +#define CFG_MAX_I2C_BUS 2 +#define I2C_GET_BUS() i2c_get_bus_num() +#define I2C_SET_BUS(a) i2c_set_bus_num(a) +#else +#define CFG_MAX_I2C_BUS 1 +#define I2C_GET_BUS() 0 +#define I2C_SET_BUS(a) +#endif + /* * Initialization, must be called once on start up, may be called * repeatedly to change the speed and slave addresses. -- cgit v1.2.3