From mboxrd@z Thu Jan 1 00:00:00 1970 From: Holger Brunck Date: Wed, 14 Dec 2011 16:31:19 +0100 Subject: [U-Boot] [PATCH 1/2] arm/km: speed up i2c access for keymile boards Message-ID: <1323876680-7428-1-git-send-email-holger.brunck@keymile.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de We don't need 3us delay for our i2c bus. Decrease it to 1us. It would also be possible to use 100ns in the future, but currently kirkwood has no ndelay implementation. Signed-off-by: Holger Brunck Cc: Valentin Longchamp Cc: Prafulla Wadaskar Cc: Heiko Schocher --- include/configs/km/km_arm.h | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/include/configs/km/km_arm.h b/include/configs/km/km_arm.h index 700124c..ca84932 100644 --- a/include/configs/km/km_arm.h +++ b/include/configs/km/km_arm.h @@ -195,7 +195,7 @@ int get_scl(void); #define I2C_SCL(bit) kw_gpio_set_value(KM_KIRKWOOD_SCL_PIN, bit) #endif -#define I2C_DELAY udelay(3) /* 1/4 I2C clock duration */ +#define I2C_DELAY udelay(1) #define I2C_SOFT_DECLARATIONS #endif -- 1.7.1