tree 071631d9be053a6d9f6028e8435535f44d4f7417
parent de7657cc0a504242dc1b3b276e82c81f07d61f0b
author Loic Poulain <loic.poulain@linaro.org> 1673449728 +0100
committer Loic Poulain <loic.poulain@linaro.org> 1674837255 +0100

perf(imx): speed-up console/uart TX using FIFO

The current putc version test for TXEMPTY bit set (#6) instead
of waiting for TXFULL bit clear (#4), that slows the global
boot time as we are not taking benefit of the 32-byte FIFO.

We then need to implement the flush function to be sure the
transmit is complete (FIFO and shift register empty).

Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
Change-Id: I54873a5203e2afdc230e44ce73284e7a80985b4f