* [PATCH 5.5 255/399] MIPS: ralink: dts: gardena_smart_gateway_mt7688: Limit UART1
[not found] <20200221072402.315346745@linuxfoundation.org>
@ 2020-02-21 7:39 ` Greg Kroah-Hartman
0 siblings, 0 replies; only message in thread
From: Greg Kroah-Hartman @ 2020-02-21 7:39 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Reto Schneider, Stefan Roese,
Paul Burton, Paul Burton, linux-mips, Sasha Levin
From: Reto Schneider <reto.schneider@husqvarnagroup.com>
[ Upstream commit e8c192011c920517e5578d51c7aff0ecadd25de3 ]
The radio module asserts CTS when its RX buffer has 10 bytes left.
Putting just 8 instead of 16 bytes into the UART1 TX buffer on the Linux
side ensures to not overflow the RX buffer on the radio module side.
Signed-off-by: Reto Schneider <reto.schneider@husqvarnagroup.com>
Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Paul Burton <paul.burton@mips.com>
Signed-off-by: Paul Burton <paulburton@kernel.org>
Cc: linux-mips@vger.kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
arch/mips/boot/dts/ralink/gardena_smart_gateway_mt7688.dts | 3 +++
1 file changed, 3 insertions(+)
diff --git a/arch/mips/boot/dts/ralink/gardena_smart_gateway_mt7688.dts b/arch/mips/boot/dts/ralink/gardena_smart_gateway_mt7688.dts
index aa5caaa311047..aad9a8a8669b4 100644
--- a/arch/mips/boot/dts/ralink/gardena_smart_gateway_mt7688.dts
+++ b/arch/mips/boot/dts/ralink/gardena_smart_gateway_mt7688.dts
@@ -177,6 +177,9 @@
pinctrl-names = "default";
pinctrl-0 = <&pinmux_i2s_gpio>; /* GPIO0..3 */
+ fifo-size = <8>;
+ tx-threshold = <8>;
+
rts-gpios = <&gpio 1 GPIO_ACTIVE_LOW>;
cts-gpios = <&gpio 2 GPIO_ACTIVE_LOW>;
};
--
2.20.1
^ permalink raw reply related [flat|nested] only message in thread
only message in thread, other threads:[~2020-02-21 8:42 UTC | newest]
Thread overview: (only message) (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
[not found] <20200221072402.315346745@linuxfoundation.org>
2020-02-21 7:39 ` [PATCH 5.5 255/399] MIPS: ralink: dts: gardena_smart_gateway_mt7688: Limit UART1 Greg Kroah-Hartman
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).