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authorHolger Brunck <holger.brunck@keymile.com>2011-12-14 05:31:19 +0000
committerAlbert ARIBAUD <albert.u.boot@aribaud.net>2012-02-12 10:11:28 +0100
commit9e9c6d7cf668673c18c56951dffb0abfc1f7254b (patch)
treebe0c5df15ca55c75ed8e938c10a1ecdc4868e003
parent96f5c4b2c938d4bb76926d132e5ddc112a2493f4 (diff)
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arm/km: speed up i2c access for keymile boards
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 <holger.brunck@keymile.com> Cc: Valentin Longchamp <valentin.longchamp@keymile.com> Cc: Prafulla Wadaskar <prafulla@marvell.com> Cc: Heiko Schocher <hs@denx.de> Acked-by: Heiko Schocher <hs@denx.de>
-rw-r--r--include/configs/km/km_arm.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/configs/km/km_arm.h b/include/configs/km/km_arm.h
index 9c8d222..c73a10c 100644
--- a/include/configs/km/km_arm.h
+++ b/include/configs/km/km_arm.h
@@ -194,7 +194,7 @@ 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