diff options
| -rw-r--r-- | drivers/i2c/busses/i2c-designware.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/i2c/busses/i2c-designware.c b/drivers/i2c/busses/i2c-designware.c index 5fce1a0..0eea0dd 100644 --- a/drivers/i2c/busses/i2c-designware.c +++ b/drivers/i2c/busses/i2c-designware.c @@ -50,6 +50,8 @@ #define DW_IC_INTR_STAT 0x2c #define DW_IC_INTR_MASK 0x30 #define DW_IC_RAW_INTR_STAT 0x34 +#define DW_IC_RX_TL 0x38 +#define DW_IC_TX_TL 0x3c #define DW_IC_CLR_INTR 0x40 #define DW_IC_CLR_RX_UNDER 0x44 #define DW_IC_CLR_RX_OVER 0x48 @@ -295,6 +297,10 @@ static void i2c_dw_init(struct dw_i2c_dev *dev) writel(lcnt, dev->base + DW_IC_FS_SCL_LCNT); dev_dbg(dev->dev, "Fast-mode HCNT:LCNT = %d:%d\n", hcnt, lcnt); + /* Configure Tx/Rx FIFO threshold levels */ + writel(dev->tx_fifo_depth - 1, dev->base + DW_IC_TX_TL); + writel(0, dev->base + DW_IC_RX_TL); + /* configure the i2c master */ ic_con = DW_IC_CON_MASTER | DW_IC_CON_SLAVE_DISABLE | DW_IC_CON_RESTART_EN | DW_IC_CON_SPEED_FAST; |