diff options
Diffstat (limited to 'drivers/i2c')
| -rw-r--r-- | drivers/i2c/busses/i2c-tegra.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/i2c/busses/i2c-tegra.c b/drivers/i2c/busses/i2c-tegra.c index 1ac2429a5c6c..5961aa0f5fcb 100644 --- a/drivers/i2c/busses/i2c-tegra.c +++ b/drivers/i2c/busses/i2c-tegra.c @@ -235,6 +235,10 @@ static void i2c_writel(struct tegra_i2c_dev *i2c_dev, u32 val, unsigned long reg) { writel(val, i2c_dev->base + tegra_i2c_reg_addr(i2c_dev, reg)); + + /* Read back register to make sure that register writes completed */ + if (reg != I2C_TX_FIFO) + readl(i2c_dev->base + tegra_i2c_reg_addr(i2c_dev, reg)); } static u32 i2c_readl(struct tegra_i2c_dev *i2c_dev, unsigned long reg) |