[PATCH] i2c: ast_i2c: Remove SCL direct drive mode
Eddie James
eajames at linux.ibm.com
Wed May 11 22:52:03 CEST 2022
SCL direct drive mode prevents communication with devices that
do clock stretching, so disable. The Linux driver doesn't use
this mode, and the engine can handle clock stretching.
Signed-off-by: Eddie James <eajames at linux.ibm.com>
---
drivers/i2c/ast_i2c.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/i2c/ast_i2c.c b/drivers/i2c/ast_i2c.c
index 2d3fecaa14..8b24a260c0 100644
--- a/drivers/i2c/ast_i2c.c
+++ b/drivers/i2c/ast_i2c.c
@@ -76,7 +76,7 @@ static void ast_i2c_init_bus(struct udevice *dev)
/* Enable Master Mode. Assuming single-master */
writel(I2CD_MASTER_EN
| I2CD_M_SDA_LOCK_EN
- | I2CD_MULTI_MASTER_DIS | I2CD_M_SCL_DRIVE_EN,
+ | I2CD_MULTI_MASTER_DIS,
&priv->regs->fcr);
/* Enable Interrupts */
writel(I2CD_INTR_TX_ACK
--
2.27.0
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