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Author SHA1 Message Date
Stephen Warren
e3a46e3ee2 serial: bcm283x_mu: make pending values more explicit 
dm_serial_ops.pending should return the number of characters, not just a
valid C Boolean integer value. The existing code does already does this,
but only as an accident since BCM283X_MU_LSR_RX_READY happens to be
BIT(0). Enhance the code to be more explicit about the values it returns.

Suggested-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
 2016-04-18 17:11:47 -04:00
Stephen Warren
3917c26909 serial: add BCM283x mini UART driver 
The RPi3 typically uses the regular UART for high-speed communication with
the Bluetooth device, leaving us the mini UART to use for the serial
console. Add support for this UART so we can use it.

Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
 2016-03-27 09:12:52 -04:00