u-boot.git/drivers/serial, branch v2018.03-rc2

serial: Make full device search optional

2018-01-29T13:18:02+00:00

Commit 608b0c4ad4e5ec0c ("serial: Use next serial device if probing fails")
added code to search for more serial devices if the default one was not
probed correctly.

Unfortunately, that breaks omap3_evm. So while investigating why that is
the case, let's disable the full search for everyone but bcm283x where it
is needed.

Fixes: 608b0c4ad4e5ec0c ("serial: Use next serial device if probing fails")
Reported-by: Derald D. Woods 
Signed-off-by: Alexander Graf

bcm2835_pl011_serial: Add BCM2835 specific serial driver

2018-01-28T17:27:36+00:00

On bcm2835 we need to ensure we only access serial devices that are
muxed to the serial output pins of the pin header. To achieve this
for the pl011 device, add a bcm2835 specific pl011 wrapper device
that does this check but otherwise behaves like a pl011 device.

Signed-off-by: Alexander Graf

bcm2835_mu_serial: Convert to Kconfig

2018-01-28T17:27:36+00:00

Setting config options using headers is deprecated. This patch converts
the BCM2835 Mini-UART to Kconfig.

Signed-off-by: Alexander Graf

pl01x: Convert CONFIG_PL01X_SERIAL to Kconfig

2018-01-28T17:27:35+00:00

We want to use Kconfig logic to depend on whether pl01x devices
are built in, so let's convert their inclusion selection to Kconfig.

This round goes to pl01x.

Signed-off-by: Alexander Graf

pl011: Convert CONFIG_PL011_SERIAL to Kconfig

2018-01-28T17:27:35+00:00

We want to use Kconfig logic to depend on whether pl01x devices
are built in, so let's convert their inclusion selection to Kconfig.

This round goes to pl011.

Signed-off-by: Alexander Graf

pl010: Convert CONFIG_PL010_SERIAL to Kconfig

2018-01-28T17:27:35+00:00

We want to use Kconfig logic to depend on whether pl01x devices
are built in, so let's convert their inclusion selection to Kconfig.

This round goes to pl010.

Signed-off-by: Alexander Graf

pl01x: Convert to dev_read

2018-01-28T17:27:34+00:00

The fdtdec API is deprecated, convert the pl010 and pl011 devices to
use the dev_read API instead.

Signed-off-by: Alexander Graf

serial_bcm283x_mu: Fail loading if not muxed

2018-01-28T17:27:34+00:00

The bcm283x mini-uart is only really usable as U-Boot serial output
when it is muxed to the UART pins of the RPi pin header.

So fail probing in case it is not muxed correctly, as in that case
firmware did not initialize it properly either.

Signed-off-by: Alexander Graf

serial_bcm283x_mu: Always skip init

2018-01-28T17:27:34+00:00

The serial initialization doesn't always quite work for me, so let's
always skip it for now. We know that firmware on the RPi initializes
us properly already.

Signed-off-by: Alexander Graf

serial_bcm283x_mu: Convert to dev_read

2018-01-28T17:27:34+00:00

The fdtdec API got deprecated in favor of dev_read calls.
Use those instead.

Signed-off-by: Alexander Graf