Commit Graph

4 Commits (acbdd396a5fedbe160bcb1271b37e941f3eaa45c)

Author SHA1 Message Date
Benjamin Herrenschmidt 13e84b0bbb pp_soc_uart: Fix rx synchronizers and ensure stable tx init state
The rx synchronizers were ... non existent. Someone forgot to add
a if rising_edge(clk) to the process.

For tx, ensure that we have a default value so that TX stays high
from TPGA configuration to the reset being sampled on the first clock
cycle.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
5 years ago
Anton Blanchard 61d5e61f09 Add a few FFs on the RX input to avoid metastability issues
Signed-off-by: Anton Blanchard <anton@linux.ibm.com>
5 years ago
Benjamin Herrenschmidt 559b3bcf2d pp_uart: reformat
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
5 years ago
Anton Blanchard 5a29cb4699 Initial import of microwatt
Signed-off-by: Anton Blanchard <anton@linux.ibm.com>
5 years ago