summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorAlexey Brodkin <Alexey.Brodkin@synopsys.com>2013-11-07 17:52:33 +0400
committerHeiko Schocher <hs@denx.de>2013-11-13 06:22:41 +0100
commitf9de54e9b09b4836fb3cda9d98a6dfba367b9734 (patch)
tree0a1b5d9736650de8d7260d81eb798208afc43c01
parent8b7c87253960aac0b670e606d8dbe2f64b1e5652 (diff)
downloadu-boot-imx-f9de54e9b09b4836fb3cda9d98a6dfba367b9734.zip
u-boot-imx-f9de54e9b09b4836fb3cda9d98a6dfba367b9734.tar.gz
u-boot-imx-f9de54e9b09b4836fb3cda9d98a6dfba367b9734.tar.bz2
designware_i2c: remove 10msec delay in i2c_xfer_finish
This delay applies to any data transfer on I2C bus. For example 1kB data read with per-byte access (which happens if environment is stored in I2C EEPROM) takes more than 10 seconds. Moreover data bus driver has to care about bus state and data transfer, but not about internal states of attached devices. Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> Cc: Tom Rini <trini@ti.com> cc: Armando Visconti <armando.visconti@st.com> Cc: Stefan Roese <sr@denx.de> Cc: Albert ARIBAUD <albert.u.boot@aribaud.net> Cc: Heiko Schocher <hs@denx.de> Cc: Vipin KUMAR <vipin.kumar@st.com> Cc: Tom Rix <Tom.Rix@windriver.com> Cc: Mischa Jonker <mjonker@synopsys.com>
-rw-r--r--drivers/i2c/designware_i2c.c3
1 files changed, 0 insertions, 3 deletions
diff --git a/drivers/i2c/designware_i2c.c b/drivers/i2c/designware_i2c.c
index c5c6015..cb2ac04 100644
--- a/drivers/i2c/designware_i2c.c
+++ b/drivers/i2c/designware_i2c.c
@@ -249,9 +249,6 @@ static int i2c_xfer_finish(void)
i2c_flush_rxfifo();
- /* Wait for read/write operation to complete on actual memory */
- udelay(10000);
-
return 0;
}