diff options
Diffstat (limited to 'target/linux/layerscape/patches-5.4/808-i2c-0007-i2c-imx-add-workaround-for-erratum-ERR010027.patch')
| -rw-r--r-- | target/linux/layerscape/patches-5.4/808-i2c-0007-i2c-imx-add-workaround-for-erratum-ERR010027.patch | 34 |
1 files changed, 0 insertions, 34 deletions
diff --git a/target/linux/layerscape/patches-5.4/808-i2c-0007-i2c-imx-add-workaround-for-erratum-ERR010027.patch b/target/linux/layerscape/patches-5.4/808-i2c-0007-i2c-imx-add-workaround-for-erratum-ERR010027.patch deleted file mode 100644 index a22f9766eb..0000000000 --- a/target/linux/layerscape/patches-5.4/808-i2c-0007-i2c-imx-add-workaround-for-erratum-ERR010027.patch +++ /dev/null @@ -1,34 +0,0 @@ -From 8e7e594b685f3fe44cd4803e3a4634bed897c2f7 Mon Sep 17 00:00:00 2001 -From: Zhang Ying-22455 <ying.zhang22455@nxp.com> -Date: Fri, 14 Apr 2017 17:03:03 +0800 -Subject: [PATCH] i2c: imx: add workaround for erratum ERR010027 - -ERR010027: Attempting a start cycle while the bus is busy may -generate a short clock pulse. - -Software must ensure that the I2C BUS is idle by checking the -bus busy before switching to master mode and attempting a Start -cycle. - -Signed-off-by: Zhang Ying-22455 <ying.zhang22455@nxp.com> ---- - drivers/i2c/busses/i2c-imx.c | 8 ++++++++ - 1 file changed, 8 insertions(+) - ---- a/drivers/i2c/busses/i2c-imx.c -+++ b/drivers/i2c/busses/i2c-imx.c -@@ -968,6 +968,14 @@ static int i2c_imx_xfer(struct i2c_adapt - enable_runtime_pm = true; - } - -+ /* -+ * workround for ERR010027: ensure that the I2C BUS is idle -+ * before switching to master mode and attempting a Start cycle -+ */ -+ result = i2c_imx_bus_busy(i2c_imx, 0); -+ if (result) -+ goto out; -+ - result = pm_runtime_get_sync(i2c_imx->adapter.dev.parent); - if (result < 0) - goto out; |