diff options
Diffstat (limited to 'target/linux/imx6/patches-3.12/0040-i2c-imx-retry-on-NAK.patch')
| -rw-r--r-- | target/linux/imx6/patches-3.12/0040-i2c-imx-retry-on-NAK.patch | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/target/linux/imx6/patches-3.12/0040-i2c-imx-retry-on-NAK.patch b/target/linux/imx6/patches-3.12/0040-i2c-imx-retry-on-NAK.patch index e876c6e..6039cf5 100644 --- a/target/linux/imx6/patches-3.12/0040-i2c-imx-retry-on-NAK.patch +++ b/target/linux/imx6/patches-3.12/0040-i2c-imx-retry-on-NAK.patch @@ -17,22 +17,22 @@ Tested-by: Luka Perkov <luka@openwrt.org> #define IMX_I2C_BIT_RATE 100000 /* 100kHz */ +#define IMX_I2C_MAX_RETRIES 3 /* number of retries to attempt */ - /* IMX I2C registers */ - #define IMX_I2C_IADR 0x00 /* i2c slave address */ -@@ -198,7 +199,7 @@ static int i2c_imx_acked(struct imx_i2c_ + /* IMX I2C registers: + * the I2C register offset is different between SoCs, +@@ -298,7 +299,7 @@ static int i2c_imx_acked(struct imx_i2c_ { - if (readb(i2c_imx->base + IMX_I2C_I2SR) & I2SR_RXAK) { + 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__); -@@ -533,6 +534,7 @@ static int __init i2c_imx_probe(struct p +@@ -633,6 +634,7 @@ static int i2c_imx_probe(struct platform 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; - pinctrl = devm_pinctrl_get_select_default(&pdev->dev); + /* Get I2C clock */ |