diff options
| -rw-r--r-- | target/linux/imx6/patches-4.3/207-i2c-imx-add-retries-for-NAK-s-on-ventana-boards.patch | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/target/linux/imx6/patches-4.3/207-i2c-imx-add-retries-for-NAK-s-on-ventana-boards.patch b/target/linux/imx6/patches-4.3/207-i2c-imx-add-retries-for-NAK-s-on-ventana-boards.patch new file mode 100644 index 0000000000..bfb5707ff0 --- /dev/null +++ b/target/linux/imx6/patches-4.3/207-i2c-imx-add-retries-for-NAK-s-on-ventana-boards.patch @@ -0,0 +1,24 @@ +Index: linux-4.3/drivers/i2c/busses/i2c-imx.c +=================================================================== +--- linux-4.3.orig/drivers/i2c/busses/i2c-imx.c 2015-11-01 16:05:25.000000000 -0800 ++++ linux-4.3/drivers/i2c/busses/i2c-imx.c 2015-12-18 10:39:44.971158318 -0800 +@@ -461,6 +461,8 @@ + { + if (imx_i2c_read_reg(i2c_imx, IMX_I2C_I2SR) & I2SR_RXAK) { + dev_dbg(&i2c_imx->adapter.dev, "<%s> No ACK\n", __func__); ++ if (i2c_imx->adapter.retries) ++ return -EAGAIN; + return -EIO; /* No ACK */ + } + +@@ -1010,6 +1012,10 @@ + i2c_imx->adapter.nr = pdev->id; + i2c_imx->adapter.dev.of_node = pdev->dev.of_node; + i2c_imx->base = base; ++ if (of_machine_is_compatible("gw,ventana") && phy_addr == 0x021a0000) { ++ dev_info(&pdev->dev, "Adding retries for Ventana GSC\n"); ++ i2c_imx->adapter.retries = 3; ++ } + + /* Get I2C clock */ + i2c_imx->clk = devm_clk_get(&pdev->dev, NULL); |