u-boot.git/drivers/serial, branch v2017.09

serial: serial-uclass: Add generic serial RX buffer support

2017-08-24T03:00:47+00:00

Pasting longer lines into the U-Boot console prompt sometimes leads to
characters missing. One problem here is the small 16-byte FIFO of the
legacy NS16550 UART, e.g. on x86 platforms.

This patch now introduces a Kconfig option to enable RX buffer support
for all DM based serial drivers. With this option enabled, I was
able paste really long lines into the U-Boot console, without any
characters missing.

Signed-off-by: Stefan Roese 
Cc: Simon Glass 
Cc: Bin Meng 
Cc: Tom Rini 
Reviewed-by: Bin Meng 
Tested-by: Bin Meng

Revert "serial: ns16550: Add RX interrupt buffer support"

2017-08-24T03:00:47+00:00

This reverts commit 6822cf3ec7c8768b8727573b8f4b2cb3d870b881.

As Bin Meng has tested and pointed out, we don't need the RX interrupt
for the RX buffer support at all. Just reading all available characters
into a buffer is sufficient to solve the problem with the dropped
characters upon long lines pasted into the U-Boot prompt. Since this
RX buffer support can be implemented in a generic way, without any
device specifica (e.g. for the ns16550), I'll post a new patch with
a new serial RX buffer support for DM, which all DM based serial
drivers can use.

Signed-off-by: Stefan Roese 
Cc: Simon Glass 
Cc: Bin Meng 
Cc: Tom Rini 
Reviewed-by: Bin Meng

env: Rename getenv/_f() to env_get()

2017-08-16T12:30:24+00:00

We are now using an env_ prefix for environment functions. Rename these
two functions for consistency. Also add function comments in common.h.

Quite a few places use getenv() in a condition context, provoking a
warning from checkpatch. These are fixed up in this patch also.

Suggested-by: Wolfgang Denk 
Signed-off-by: Simon Glass

serial: sh: Use the clock framework to obtain clock config

2017-08-02T19:26:25+00:00

Since we now have clock driver on the RCar Gen3 , obtain the clock
configuration using the clock framework functions. In case this
fails, fall back to the original code for pulling the clock config
directly out of OF.

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

serial: sh: Convert to Kconfig

2017-08-02T19:26:24+00:00

Convert the SH Serial to Kconfig using tools/moveconfig.py tool
and a bit of manual adjustment to cater for failed conversions.

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

dm: console: Check for serial devices properly

2017-07-31T16:21:40+00:00

With driver model the serial device is often not called "serial". Mark
driver-model stdio devices so that they can be detected and we can look up
the uclass. This is a more reliable way of finding out whether the console
is connected to a serial device or not.

Signed-off-by: Simon Glass

serial: stm32x7: Convert CONFIG_STM32X7_SERIAL to Kconfig

2017-07-31T15:22:54+00:00

Add CONFIG_STM32X7_SERIAL as a Kconfig option.

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

spl: make SPL and normal u-boot stage use independent SYS_MALLOC_F_LEN

2017-07-27T12:59:03+00:00

Some platforms have very limited SRAM to run SPL code, so there may
not be the same amount space for a malloc pool before relocation in
the SPL stage as the normal U-Boot stage.

Make SPL and (the full) U-Boot stage use independent SYS_MALLOC_F_LEN,
so the size of pre-relocation malloc pool can be configured memory
space independently.

Signed-off-by: Andy Yan 
Reviewed-by: Tom Rini 
Acked-by: Philipp Tomsich 
Reviewed-by: Philipp Tomsich 
[fixed up commit-message:]
Signed-off-by: Philipp Tomsich

serial: stm32x7: add clk_get_rate() support

2017-07-26T15:28:08+00:00

Replace proprietary clock_get() by clk_get_rate()
The stm32x7 serial driver is now "generic" and can be used
by other STM32 SoCs.

Signed-off-by: Patrice Chotard 
Acked-by: Vikas MANOCHA

serial: stm32x7: migrate serial struct to driver

2017-07-26T15:26:54+00:00

This allow to remove include/dm/platform_data/serial_stm32x7.h
which was included in the past by stm32x7 driver and by
stm32f746-disco.c board file.
Since patch 42bf5e7c27 "serial: stm32f7: add device tree support"
this file is no more needed in board file.

Signed-off-by: Patrice Chotard 
Acked-by: Vikas MANOCHA