| ee0633ef | 25-Feb-2019 |
Atish Patra <atish.patra@wdc.com> |
drivers: serial_sifive: Skip baudrate config if no input clock
It is possible that input clock is not available because clk
device was not available and 'clock-frequency' DT property is
also not ava
drivers: serial_sifive: Skip baudrate config if no input clock
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 <atish.patra@wdc.com>
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Alexander Graf <agraf@suse.de>
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| c4448bdc | 09-Jan-2019 |
Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com> |
serial: ns16550: fix debug uart putc called before init
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
serial: ns16550: fix debug uart putc called before init
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 <simon.k.r.goldschmidt@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
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| 50bf7d03 | 20-Nov-2018 |
Andy Shevchenko <andriy.shevchenko@linux.intel.com> |
serial: ns16550: Provide ->getinfo() implementation
New callback will supply necessary information, for example,
to ACPI SPCR table.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.co
serial: ns16550: Provide ->getinfo() implementation
New callback will supply necessary information, for example,
to ACPI SPCR table.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
show more ...
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| 4e720779 | 20-Nov-2018 |
Andy Shevchenko <andriy.shevchenko@linux.intel.com> |
serial: ns16550: Read reg-io-width from device tree
Cache the value of the reg-io-width property for the future use.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by:
serial: ns16550: Read reg-io-width from device tree
Cache the value of the reg-io-width property for the future use.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
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| d5bb4f86 | 20-Nov-2018 |
Andy Shevchenko <andriy.shevchenko@linux.intel.com> |
dm: serial: Introduce ->getinfo() callback
New callback will give a necessary information to fill up ACPI SPCR table,
for example. Maybe used later for other purposes.
Signed-off-by: Andy Shevchenk
dm: serial: Introduce ->getinfo() callback
New callback will give a necessary information to fill up ACPI SPCR table,
for example. Maybe used later for other purposes.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Change ADR_SPACE_SYSTEM_IO to SERIAL_ADDRESS_SPACE_IO to fix build error:
Signed-off-by: Simon Glass <sjg@chromium.org>
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