u-boot.git/drivers/serial, branch v2019.04

imx: serial_mxc: use CONFIG_IS_ENABLED instead of ifdef

2019-03-13T08:14:35+00:00

Kconfig allows boards to configured with DM_SERIAL and still
have SPL_DM_SERIAL disabled.  This patch changes the ifdef's
to CONFIG_IS_ENABLED to allow the modes to differ between
SPL and U-Boot.

Signed-off-by: Adam Ford 
Reviewed-by: Simon Glass

drivers: serial_sifive: Skip baudrate config if no input clock

2019-02-27T01:12:33+00:00

It is possible that input clock is not available because clk
device was not available and 'clock-frequency' DT property is
also not available.

In this case, instead of failing we should just skip baudrate
config by returning zero.

Signed-off-by: Atish Patra 
Signed-off-by: Anup Patel 
Reviewed-by: Alexander Graf

drivers: serial_sifive: Fix baud rate calculation

2019-02-27T01:12:33+00:00

Compute the baud rate multipler with more precision.

Signed-off-by: Atish Patra 
Signed-off-by: Anup Patel 
Reviewed-by: Alexander Graf 
Reviewed-by: Lukas Auer

imx: serial_mxc: disable ri and dcd irq in dte mode

2019-02-15T21:01:15+00:00

If the UART is used in DTE mode the RI and DCD bits in UCR3 become
irq enable bits. Both are set to enabled after reset and both likely
are pending.

Disable the bits to prevent an interrupt storm when Linux enables
the UART interrupts.

Signed-off-by: Max Krummenacher 
Signed-off-by: Marcel Ziswiler

drivers: serial: dm: Enable DM_FLAG_PRE_RELOC in SBSA pl011 uart driver

2019-02-09T12:50:55+00:00

The DM_FLAG_PRE_RELOC shall be enabled in SBSA PL011 uart driver
as this driver is used in NXP based SoCs

It is necessary to have Serial console running before relocation

The !CONFIG_IS_ENABLED(OF_CONTROL) [*] check is set as "workaround"
for DM problem : 4687919684e

This flag is set if board does not support device-tree and using
platform data, In DM Model either of device tree or platform data
can be used to fetch device configuration

It is possible to use SBSA UART with CONFIG_DM_SERIAL but witout
corresponding device tree description (OF_CONTROL)

Other board/SoCs have this flag set unconditionally

Signed-off-by: Vabhav Sharma

serial_arc: Allocate buffer for private data

2019-01-25T05:40:26+00:00

Apparently we never allocated buffer for arc_serial_platdata
which for some reason never caused problems when executed in nSIM.
But in Qemu this causes expected problems.

Signed-off-by: Alexey Brodkin

Merge tag 'dm-pull-15jan19' of git://git.denx.de/u-boot-dm

2019-01-16T03:05:34+00:00

Fix recent changes to serial API for driver model
Buildman clang support and a few fixes
Small fixes to 'dm tree' and regmap test
Improve sandbox build compatibility
A few other minor fixes

serial: ns16550: fix debug uart putc called before init

2019-01-15T20:28:52+00:00

If _debug_uart_putc() is called before _debug_uart_init(), the
ns16550 debug uart driver hangs in a tight loop waiting for the
tx FIFO to get empty.

As this can happen via a printf sneaking in before the port calls
debug_uart_init(), introduce a config option to ignore characters
before the debug uart is initialized.

This is done by reading the baudrate divisor and aborting if is zero.

The Kconfig option is required as reading the baudrate divisor does
not seem to work for all ns16500 compatibles (which is why the last
attempt on this has been reverted in 1a67969a99).

Tested on socfpga_cyclone5_socrates.

Signed-off-by: Simon Goldschmidt 
Reviewed-by: Simon Glass

drivers: serial: DEBUG_UART_SKIP_INIT depends on DEBUG_UART

2019-01-15T20:28:52+00:00

DEBUG_UART_SKIP_INIT is used only by debug UART and thus should depend
on DEBUG_UART.

Signed-off-by: Simon Goldschmidt 
Reviewed-by: Simon Glass

dm: serial: Adjust serial_getinfo() to use proper API

2019-01-15T00:47:13+00:00

All driver-model functions should have a device as the first parameter.
Update this function accordingly.

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