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path: root/drivers/i2c/busses/i2c-tegra.c
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Diffstat (limited to 'drivers/i2c/busses/i2c-tegra.c')
-rw-r--r--drivers/i2c/busses/i2c-tegra.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/i2c/busses/i2c-tegra.c b/drivers/i2c/busses/i2c-tegra.c
index 4d9319665e32..fb3b4f8f8152 100644
--- a/drivers/i2c/busses/i2c-tegra.c
+++ b/drivers/i2c/busses/i2c-tegra.c
@@ -40,8 +40,10 @@
#define I2C_CNFG_NEW_MASTER_FSM (1<<11)
#define I2C_STATUS 0x01C
#define I2C_SL_CNFG 0x020
+#define I2C_SL_CNFG_NACK (1<<1)
#define I2C_SL_CNFG_NEWSL (1<<2)
#define I2C_SL_ADDR1 0x02c
+#define I2C_SL_ADDR2 0x030
#define I2C_TX_FIFO 0x050
#define I2C_RX_FIFO 0x054
#define I2C_PACKET_TRANSFER_STATUS 0x058
@@ -337,7 +339,11 @@ static int tegra_i2c_init(struct tegra_i2c_dev *i2c_dev)
if (!i2c_dev->is_dvc) {
u32 sl_cfg = i2c_readl(i2c_dev, I2C_SL_CNFG);
- i2c_writel(i2c_dev, sl_cfg | I2C_SL_CNFG_NEWSL, I2C_SL_CNFG);
+ sl_cfg |= I2C_SL_CNFG_NACK | I2C_SL_CNFG_NEWSL;
+ i2c_writel(i2c_dev, sl_cfg, I2C_SL_CNFG);
+ i2c_writel(i2c_dev, 0xfc, I2C_SL_ADDR1);
+ i2c_writel(i2c_dev, 0x00, I2C_SL_ADDR2);
+
}
val = 7 << I2C_FIFO_CONTROL_TX_TRIG_SHIFT |