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i2c: ast_i2c: Remove SCL direct drive mode

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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@linux.ibm.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Reviewed-by: ryan_chen <ryan_chen@aspeedtech.com>
This commit is contained in:
Eddie James 2022-05-11 15:52:03 -05:00 • committed by Heiko Schocher
parent 26f6f7fb5c
commit 6ac25538d8
1 changed files with 1 additions and 1 deletions
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2
drivers/i2c/ast_i2c.c
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@ -77,7 +77,7 @@ static void ast_i2c_init_bus(struct udevice *dev)
/* Enable Master Mode. Assuming single-master */ /* Enable Master Mode. Assuming single-master */
writel(I2CD_MASTER_EN writel(I2CD_MASTER_EN
| I2CD_M_SDA_LOCK_EN | I2CD_M_SDA_LOCK_EN
| I2CD_MULTI_MASTER_DIS | I2CD_M_SCL_DRIVE_EN, | I2CD_MULTI_MASTER_DIS,
&priv->regs->fcr); &priv->regs->fcr);
/* Enable Interrupts */ /* Enable Interrupts */
writel(I2CD_INTR_TX_ACK writel(I2CD_INTR_TX_ACK