From: Heiko Schocher <hs@denx.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH 2/3] i2c, mpc83xx: add CONFIG_SYS_I2C_INIT_BOARD for fsl_i2c
Date: Tue, 21 Jul 2009 17:11:23 +0200 [thread overview]
Message-ID: <4A65DA9B.8030409@denx.de> (raw)
In-Reply-To: <4A55C0AA.30006@denx.de>
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@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
--
DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
prev parent reply other threads:[~2009-07-21 15:11 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-07-09 10:04 [U-Boot] [PATCH 2/3] i2c, mpc83xx: add CONFIG_SYS_I2C_INIT_BOARD for fsl_i2c Heiko Schocher
2009-07-21 15:11 ` Heiko Schocher [this message]
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