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In a final attempt to find a console UART this function uses the first
first available serial device. However the check for a valid device is
inverted.
This code is only executed when there is in fact no serial UART, but at
present it can fail to reach the panic_str() call in this case, and start
trying to use a non-existent UART.
Signed-off-by: Simon Glass <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
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Since Rockchip requires 32-bit serial access, add this to the driver.
Refactor a little to make this easier.
Signed-off-by: Simon Glass <[email protected]>
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Added UART DCC support for armv8
Signed-off-by: Siva Durga Prasad Paladugu <[email protected]>
Signed-off-by: Michal Simek <[email protected]>
Reviewed-by: Tom Rini <[email protected]>
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Move this over to Kconfig and tidy up.
Signed-off-by: Simon Glass <[email protected]>
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This feature should be deprecated for new boards, and significantly adds
to SPL code size. Drop it. Instead, we can use stdout-path in the /chosen
node.
Signed-off-by: Simon Glass <[email protected]>
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This option is used by some boards, so support it with driver model. This
is really ugly - we should rewrite this driver once all users are moved to
driver model.
Signed-off-by: Simon Glass <[email protected]>
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The business for UniPhier Soc family has been transferred from
Panasonic Corporation to Socionext Inc.
Update the SoC select menu in Kconfig.
Signed-off-by: Masahiro Yamada <[email protected]>
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In the Linux coding style, it is recommended to include <linux/io.h>
rather than <asm/io.h>. Follow this trend.
Signed-off-by: Masahiro Yamada <[email protected]>
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Due to a misunderstanding, in 698a12b we reverted changes that we in
fact wanted to keep. So lets fix that mistake and bring the code back
to how it should have been.
This reverts commit 698a12bef9e782dcd99c555a739c16eec8669f14.
Signed-off-by: Tom Rini <[email protected]>
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As per the author, we don't need this patch really since the other patch
"stm32f4: fix serial output" superseded it.
This reverts commit 85e5f5b7a7f8d889271f94791606cde62d81d53f.
Signed-off-by: Tom Rini <[email protected]>
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This patch adds device tree support for arm pl010/pl011 driver.
Signed-off-by: Vikas Manocha <[email protected]>
Acked-by: Simon Glass <[email protected]>
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Add the stm32F4 board's serial ports support.
User can use it easily.
The user only need to edit the number of the usart.
The patch also fix the serial print out.
Last, this version of patch fix the first patch checkpatch.pl error.
Thanks to Kamil Lulko.
Signed-off-by: kunhuahuang <[email protected]>
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This patch fix the serial output.
The source is from Kamil Lulko's "stm32f429-discovery board support"
Thanks, Varcain. I learned a lot.
Signed-off-by: kunhuahuang <[email protected]>
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On slow platforms not all baudrate setting is valid.
Check it directly in the driver and setup maximum possible
frequency.
Signed-off-by: Michal Simek <[email protected]>
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This was accidentally added by commit dd0b0122bacc
"serial: ns16550: Add an option to specify the debug UART register shift".
Remove it.
Signed-off-by: Axel Lin <[email protected]>
Acked-by: Simon Glass <[email protected]>
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The printf() in panic() adds about 1.5KB of code size to SPL when compiled
with Thumb-2. Provide a smaller version that does not support printf()-style
arguments and use it in two commonly compiled places.
Signed-off-by: Simon Glass <[email protected]>
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It is not necessary to write a zero baud rate to the device, and for some
chips this will cause problems. Drop this code.
Signed-off-by: Simon Glass <[email protected]>
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Allow this driver to support boards where the register shift is not 0.
This fixes some compiler warnings which appear in that case.
Signed-off-by: Simon Glass <[email protected]>
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This UART permits different register spacing. To support the debug UART on
devices which have a spacing other than 1 byte, allow the shift value to
be specified.
Signed-off-by: Simon Glass <[email protected]>
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Signed-off-by: Kamil Lulko <[email protected]>
Reviewed-by: Tom Rini <[email protected]>
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commit aed2fbef5e9a0ab5a7cd01e742039a962f0b24ef
"dm: serial: Tidy up the pl01x driver"
caused a regression on (real hardware) PL010 by omitting
to update the line control register when switching baudrate.
Fix this by inlining the missing write to the baud control
register.
Also renaming the set_line_control() function to
pl011_set_line_control() since this function is clearly
PL011-specific, and it won't suffice to call that to
set up line control.
Tested on the Integrator/AP hardware.
Cc: Simon Glass <[email protected]>
Signed-off-by: Linus Walleij <[email protected]>
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In the case where the arch defines a custom map_sysmem(), make sure that
including just mapmem.h is sufficient to have these functions as they
are when the arch does not override it.
Also split the non-arch specific functions out of common.h
Signed-off-by: Joe Hershberger <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
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Add a convenience function to access the private data that a uclass stores
for each of its devices. Convert over most existing uses for consistency
and to provide an example for others.
Signed-off-by: Simon Glass <[email protected]>
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Signed-off-by: Alexander Merkle <[email protected]>
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Now when all infrastructure in ARC is ready for it let's switch ARC UART
to driver model.
Signed-off-by: Alexey Brodkin <[email protected]>
Cc: Masahiro Yamada <[email protected]>
Cc: Simon Glass <[email protected]>
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Being global variable with 0 value it falls into .bss area which we may
only use after relocation to RAM. And right afetr relocation we zero
.bss - effectively cleaing register address set for early console.
Now with pre-set value "regs" variable is no longer in .bss and this way
safely survives relocation.
Signed-off-by: Alexey Brodkin <[email protected]>
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Serial-uclass should be generically implemented without depending
a particular hardware. Fortunately, nothing in include/ns16550.h is
referenced from drivers/serial/serial-uclass.c, so remove this bogus
include.
Signed-off-by: Masahiro Yamada <[email protected]>
Reviewed-by: Tom Rini <[email protected]>
Acked-by: Simon Glass <[email protected]>
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Panasonic's System LSI products, UniPhier SoC family, have been
transferred to Socionext Inc.
Signed-off-by: Masahiro Yamada <[email protected]>
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Fix trivial typo.
Acked-by: Simon Glass <[email protected]>
Signed-off-by: Axel Lin <[email protected]>
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We do not have to set the LCR register every time we change the
baud-rate. We just need to set it up once in the probe function.
Signed-off-by: Masahiro Yamada <[email protected]>
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For PH1-Pro4, the 8 bit write access to LCR register (offset = 0x11)
is not working correctly. As a side effect, it also modifies MCR
register (offset = 0x10) and results in unexpected behavior.
Signed-off-by: Masahiro Yamada <[email protected]>
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The formula to calculate SCIF BRR for R-Car H2/M2/E2 SoCs is as follows:
BRR = pclk / (64 * 2^(2n-1) * baudrate) - 1,
the prescaler is 0 due to SCSMR settings, hence n=0
Also SCSCR must be set to use internal or external clock source.
Signed-off-by: Vladimir Barinov <[email protected]>
Signed-off-by: Nobuhiro Iwamatsu <[email protected]>
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serial_sh.c contains invalid UTF-8 character.
This deletes the character.
Signed-off-by: Nobuhiro Iwamatsu <[email protected]>
Signed-off-by: Nobuhiro Iwamatsu <[email protected]>
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These are still non-generic boards.
Signed-off-by: Masahiro Yamada <[email protected]>
Cc: Greg Ungerer <[email protected]>
Acked-by: Marek Vasut <[email protected]>
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Add debug UART functions to permit ns16550 to provide an early debug UART.
Try to avoid using the stack so that this can be called from assembler before
a stack is set up (at least on ARM and PowerPC).
Signed-off-by: Simon Glass <[email protected]>
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For the debug UART we need to be able to provide any parameters before
driver model is set up. Add parameters to the low-level access functions
to make this possible.
Signed-off-by: Simon Glass <[email protected]>
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This came up in a discussion on the mailing list here:
https://patchwork.ozlabs.org/patch/384613/
My concerns at the time were:
- it doesn't need to be written in assembler
- it doesn't need to be ARM-specific
This patch provides a possible alternative. It works by allowing any serial
driver to export one init function and provide a putc() function. These
can be used to output debug data before the real serial driver is available.
This implementation does not depend on driver model, and it is possible for
it to operate without a stack on some architectures (e.g. PowerPC, ARM). It
provides the same features as the ARM-specific debug.S but with more UART
and architecture support.
Signed-off-by: Simon Glass <[email protected]>
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Targets with CONFIG_NEEDS_MANUAL_RELOC do not use REL/RELA
relocation (mostly only GOT) where functions aray are not
updated. This patch is fixing function pointers for DM core
and serial-uclass to ensure that relocated functions are called.
Signed-off-by: Michal Simek <[email protected]>
Acked-by: Simon Glass <[email protected]>
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This adds driver model support with this driver. This was tested by Koelsch
board and Gose board.
Signed-off-by: Nobuhiro Iwamatsu <[email protected]>
Acked-by: Simon Glass <[email protected]>
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Expand the help messages for each driver. Add missing Kconfig for I2C,
SPI flash and thermal.
Signed-off-by: Simon Glass <[email protected]>
Reviewed-by: Masahiro Yamada <[email protected]>
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This uses the ns16550 driver but sets up the clock at run-time. It does
not seem to be available in the device tree.
Signed-off-by: Simon Glass <[email protected]>
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At present we try to use the 'reg' property and device tree aliases to give
devices a sequence number. The 'reg' property is often actually a memory
address, so the sequence numbers thus-obtained are not useful. It would be
better if the devices were just sequentially numbered in that case. In fact
neither I2C nor SPI use this feature, so drop it.
Some devices need us to look up an alias to number them within the uclass.
Add a flag to control this, so it is not done unless it is needed.
Adjust the tests to test this new behaviour.
Signed-off-by: Simon Glass <[email protected]>
Reviewed-by: Masahiro Yamada <[email protected]>
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This information help with debugging issues with uart.
Signed-off-by: Michal Simek <[email protected]>
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This change enables to change baudrate on command line.
Signed-off-by: Michal Simek <[email protected]>
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