Hi Simon,
Hi Lukasz,
On 3 October 2017 at 03:16, Lukasz Majewski <lu...@denx.de> wrote:
It may happen that the MXC serial IP block is performing some ongoing
transmission (started at e.g. board_init()) when the "initr_serial" is
called.
As a result the serial port IP block is reset, so transmitted data is
corrupted:
I2C: ready
DRAM: 1 GiB
jSS('HH��SL_SDHC: 04 rev 0x0
This patch prevents from this situation, by waiting for transmission
complete bit set (UART Status Register 2 (UARTx_USR2), bit TXDC):
I2C: ready
DRAM: 1 GiB
ID: unit type 0x4 rev 0x0
Signed-off-by: Lukasz Majewski <lu...@denx.de>
---
drivers/serial/serial_mxc.c | 7 +++++++
1 file changed, 7 insertions(+)
Is it possible to use driver model to do this in a generic way for all
serial drivers? The pending() method allows you to check if there are
any characters in the output FIFO.
Please correct me if I'm wrong.
Do you mean to define pre_init() callback in serial-uclass.c file, which
would utilize ->pending callback if available?
In that way we would have the generic facility for above check available
on all platforms.
Regards,
Simon
--
Best regards,
Lukasz Majewski
--
DENX Software Engineering GmbH, Managing Director: Wolfgang Denk
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: w...@denx.de
_______________________________________________
U-Boot mailing list
U-Boot@lists.denx.de
https://lists.denx.de/listinfo/u-boot
