[U-Boot] [PATCH 2/3] i2c, mpc83xx: add CONFIG_SYS_I2C_INIT_BOARD for fsl_i2c
Heiko Schocher
hs at denx.de
Tue Jul 21 17:11:23 CEST 2009
Hello Heiko
Heiko Schocher wrote:
> This patch adds the possibility to call a board specific
> i2c bus reset routine for the fsl_i2c bus driver, and adds
> this option for the keymile kmeter1 board.
>
> The deblock sequence for this board is implemented and
> tested in the following way:
>
> CR = 0x20 (release SDA and SCL pin)
> CR = 0xa0 (start read)
> dummy read
> dummy read
> if 2. dummy read == 0x00
> 3. dummy read
>
> CR = 0x80 (SDA and SCL now 1 SR = 0x86)
> CR = 0x00 (Modul reset SR=0x81)
> CR = 0x80 (SDA and SCL = 1, SR = 0x81)
>
> Signed-off-by: Heiko Schocher <hs at denx.de>
> ---
> board/keymile/common/common.c | 20 ++++++++++++++++++++
> drivers/i2c/fsl_i2c.c | 6 ++++++
> include/configs/kmeter1.h | 1 -
> 3 files changed, 26 insertions(+), 1 deletions(-)
Applied to u-boot-i2c.git
bye
heiko
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