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dm: Add a uclass for serial devices

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Serial devices support simple byte input/output and a few operations to find
out whether data is available. Add a basic uclass for serial devices to be
used by drivers that are converted to driver model.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass
2014-09-04 16:27:26 -06:00
parent 1f359e3611
commit 57d92753d4
4 changed files with 310 additions and 0 deletions
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include/dm/uclass-id.h
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@@ -21,6 +21,7 @@ enum uclass_id {
/* U-Boot uclasses start here */
UCLASS_GPIO, /* Bank of general-purpose I/O pins */
UCLASS_SERIAL, /* Serial UART */
UCLASS_COUNT,
UCLASS_INVALID = -1,