@@ -62,6 +62,7 @@
/* Default value */
#define IMX_I2C_BIT_RATE 100000 /* 100kHz */
+#define IMX_I2C_MAX_RETRIES 3 /* number of retries to attempt */
/* IMX I2C registers:
* the I2C register offset is different between SoCs,
@@ -298,7 +299,7 @@ static int i2c_imx_acked(struct imx_i2c_struct *i2c_imx)
{
if (imx_i2c_read_reg(i2c_imx, IMX_I2C_I2SR) & I2SR_RXAK) {
dev_dbg(&i2c_imx->adapter.dev, "<%s> No ACK\n", __func__);
- return -EIO; /* No ACK */
+ return -EAGAIN; /* try again */
}
dev_dbg(&i2c_imx->adapter.dev, "<%s> ACK received\n", __func__);
@@ -633,6 +634,7 @@ static int __init i2c_imx_probe(struct platform_device *pdev)
i2c_imx->adapter.dev.parent = &pdev->dev;
i2c_imx->adapter.nr = pdev->id;
i2c_imx->adapter.dev.of_node = pdev->dev.of_node;
+ i2c_imx->adapter.retries = IMX_I2C_MAX_RETRIES;
i2c_imx->base = base;
/* Get I2C clock */