u-boot.git/drivers/serial/Makefile, branch v2018.05

SPDX: Convert all of our single license tags to Linux Kernel style

2018-05-07T13:34:12+00:00

When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini

serial: Remove duplicated line in Makefile

2018-04-16T22:45:35+00:00

The line "-obj-$(CONFIG_STM32_SERIAL) += serial_stm32.o"
is found twice in Makefile.

Fixes: ae74de0dfd45 ("serial: stm32: Rename serial_stm32x7.c to serial_stm32.c"

Signed-off-by: Patrice Chotard 
Acked-by: Vikas Manocha 
Reviewed-by: Simon Glass

serial: Fix Makefile during SPL and TPL build

2018-04-11T17:22:05+00:00

This patch fixes a situation where CONFIG_DM_SERIAL is enabled for
regular U-Boot and SPL, but not for TPL. In that case, the build
will try to include serial-uclass into the TPL nonetheless, because
CONFIG_DM_SERIAL is set.

The solution is to check if the build is for SPL or TPL and in that
case, check if CONFIG_$(SPL_TPL_)DM_SERIAL is also set. Only in that
case, include serial-uclass.c . If the build is for regular U-Boot,
CONFIG_BUILD is not set, so only check if CONFIG_DM_SERIAL is set
and if so, include serial-uclass.c

Signed-off-by: Marek Vasut 
Cc: Simon Glass 
Cc: Tom Rini

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

serial: stm32: Rename serial_stm32x7.c to serial_stm32.c

2018-01-19T20:49:32+00:00

Now this driver is used across stm32f4, stm32f7 and stm32h7
SoCs family, give it a generic name.

Signed-off-by: Patrice Chotard 
Reviewed-by: Vikas Manocha

serial: nulldev: Add nulldev serial driver

2017-09-13T13:24:24+00:00

Some device the serial console's initialization cannot run early during
the boot process. Hence, nulldev serial device is helpful on that
situation.

For example, if the serial module was implemented in FPGA. Serial
initialization is prohibited to run until the FPGA was programmed.

This commit is to adding nulldev serial driver. This will allows the
default console to be specified as a nulldev.

Signed-off-by: Joe Hershberger 
Signed-off-by: Keng Soon Cheah 
Cc: Chen Yee Chew

powerpc, 8xx: move Serial driver to drivers/serial/

2017-07-08T19:56:04+00:00

At the same time, move to Kconfig

Signed-off-by: Christophe Leroy

serial: add serial driver for BCM6345

2017-05-10T14:16:09+00:00

It is based on linux/drivers/tty/serial/bcm63xx_uart.c

Signed-off-by: Álvaro Fernández Rojas 
Reviewed-by: Simon Glass

serial: Add serial driver for Intel MID

2017-04-10T02:02:03+00:00

Add a specific serial driver for Intel MID platforms.

It has special fractional divider which can be programmed via UART_PS,
UART_MUL, and UART_DIV registers.

The UART clock is calculated as

	UART clock = XTAL * UART_MUL / UART_DIV

The baudrate is calculated as

	baud rate = UART clock / UART_PS / DLAB

Initialize fractional divider correctly for Intel Edison platform.

For backward compatibility we have to set initial DLAB value to 16
and speed to 115200 baud, where initial frequency is 29491200Hz, and
XTAL frequency is 38.4MHz.

Signed-off-by: Andy Shevchenko 
Reviewed-by: Simon Glass 
Reviewed-by: Kever Yang

dm: serial: Allow driver-model serial to be disabled for TPL

2017-04-05T20:36:59+00:00

Add separate enable/disable controls for driver-model serial. While this
is generally enabled in SPL it may not be in TPL, since serial output can
be obtained with the debug UART with minimal code size.

Signed-off-by: Simon Glass