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

bcm283x_pl011: Flush RX queue after setting baud rate

2018-03-09T17:31:04+00:00

After the UART was initialized, we may still have bogus data in the
RX queue if it was enabled with incorrect pin muxing before.

So let's flush the RX queue whenever we initialize baud rates.

This fixes a regression with the dynamic pinmuxing code when enable_uart=1
is not set in config.txt on Raspberry Pis that use pl011 for serial.

Fixes: caf2233b28 ("bcm283x: Add pinctrl driver")
Reported-by: Göran Lundberg 
Reported-by: Peter Robinson 
Signed-off-by: Alexander Graf 
Tested-by: Peter Robinson 
Tested-by: Tuomas Tynkkynen

serial_bcm283x_mu: Flush RX queue after setting baud rate

2018-03-09T17:26:47+00:00

After the UART was initialized, we may still have bogus data in the
RX queue if it was enabled with incorrect pin muxing before.

So let's flush the RX queue whenever we initialize baud rates.

This fixes a regression with the dynamic pinmuxing code when enable_uart=1
is not set in config.txt.

Fixes: caf2233b28 ("bcm283x: Add pinctrl driver")
Reported-by: Göran Lundberg 
Reported-by: Peter Robinson 
Signed-off-by: Alexander Graf 
Tested-by: Peter Robinson 
Tested-by: Tuomas Tynkkynen

ns16550: Fix mem mapped endian check

2018-02-23T15:40:50+00:00

Do a explicit check for CONFIG_SYS_BIG_ENDIAN and
CONFIG_SYS_LITTLE_ENDIAN to avoid errors on platforms where both
are undefined (x86).

Signed-off-by: Bernhard Messerklinger 
Reviewed-by: Hannes Schmelzer

serial: Replace CONFIG_ with CONFIG_IS_ENABLED

2018-02-16T15:43:10+00:00

Cosmetic change, replace CONFIG_* with CONFIG_IS_ENABLED(*) .

Signed-off-by: Marek Vasut 
Cc: Nobuhiro Iwamatsu

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