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authorScott Telford <stelford@cadence.com>2016-09-15 16:26:45 +0100
committerMax Filippov <jcmvbkbc@gmail.com>2016-09-19 11:51:32 -0700
commitbebbc4bcf36f015a5a051cc8817b11de209fbe8b (patch)
treee0dd6dbdafc17293c491524ce1786a4df5ddc4da /arch/xtensa
parentbf15f86b343ed894e74fb9c6c944cea1f8f9b654 (diff)
downloadlinux-bebbc4bcf36f015a5a051cc8817b11de209fbe8b.tar.bz2
xtensa: Tweak xuartps UART driver Rx watermark for Cadence CSP config.
Add module parameter xilinx_uartps.rx_trigger_level=32 to command line options for CSP to set Rx watermark for xuartps driver lower than the default value, to avoid UART overruns at 115200 bps. Signed-off-by: Scott Telford <stelford@cadence.com> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Diffstat (limited to 'arch/xtensa')
-rw-r--r--arch/xtensa/boot/dts/csp.dts2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/xtensa/boot/dts/csp.dts b/arch/xtensa/boot/dts/csp.dts
index 197aeadb3f90..4082f26716b9 100644
--- a/arch/xtensa/boot/dts/csp.dts
+++ b/arch/xtensa/boot/dts/csp.dts
@@ -7,7 +7,7 @@
interrupt-parent = <&pic>;
chosen {
- bootargs = "earlycon=cdns,0xfd000000,115200 console=tty0 console=ttyPS0,115200 root=/dev/ram0 rw earlyprintk loglevel=8 nohz=off ignore_loglevel";
+ bootargs = "earlycon=cdns,0xfd000000,115200 console=tty0 console=ttyPS0,115200 root=/dev/ram0 rw earlyprintk xilinx_uartps.rx_trigger_level=32 loglevel=8 nohz=off ignore_loglevel";
};
memory@0 {