Stafford Horne
4bc2bd5aef
serial: liteuart: Add support for earlycon
...
Most litex boards using RISC-V soft cores us the sbi earlycon, however
this is not available for non RISC-V litex SoC's. This patch enables
earlycon for liteuart which is available on all Litex SoC's making
support for earycon debugging more widely available.
Cc: Florent Kermarrec <florent@enjoy-digital.fr >
Cc: Mateusz Holenko <mholenko@antmicro.com >
Cc: Joel Stanley <joel@jms.id.au >
Cc: Gabriel L. Somlo <gsomlo@gmail.com >
Reviewed-and-tested-by: Gabriel Somlo <gsomlo@gmail.com >
Reviewed-by: Jiri Slaby <jirislaby@kernel.org >
Reviewed-by: Joel Stanley <joel@jms.id.au >
Signed-off-by: Stafford Horne <shorne@gmail.com >
Link: https://lore.kernel.org/r/20210517115453.24365-1-shorne@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org >
2021-05-20 16:35:01 +02:00
Wei Yongjun
cebeddd6d0
serial: liteuart: fix return value check in liteuart_probe()
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In case of error, the function devm_platform_get_and_ioremap_resource()
returns ERR_PTR() and never returns NULL. The NULL test in the return
value check should be replaced with IS_ERR().
Fixes: 1da81e5562hulkci@huawei.com >
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com >
Link: https://lore.kernel.org/r/20210305034929.3234352-1-weiyongjun1@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org >
2021-03-10 09:34:10 +01:00
Filip Kokosinski
1da81e5562
drivers/tty/serial: add LiteUART driver
...
This commit adds driver for the FPGA-based LiteUART serial controller
from LiteX SoC builder.
The current implementation supports LiteUART configured
for 32 bit data width and 8 bit CSR bus width.
It does not support IRQ.
Signed-off-by: Filip Kokosinski <fkokosinski@antmicro.com >
Signed-off-by: Mateusz Holenko <mholenko@antmicro.com >
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org >
Signed-off-by: Stafford Horne <shorne@gmail.com >
2020-11-09 21:07:01 +09:00
