From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Reto Schneider <reto.schneider@husqvarnagroup.com>,
Stefan Roese <sr@denx.de>, Paul Burton <paul.burton@mips.com>,
Paul Burton <paulburton@kernel.org>,
linux-mips@vger.kernel.org, Sasha Levin <sashal@kernel.org>,
devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-mediatek@lists.infradead.org
Subject: [PATCH AUTOSEL 5.5 354/542] MIPS: ralink: dts: gardena_smart_gateway_mt7688: Limit UART1
Date: Fri, 14 Feb 2020 10:45:46 -0500 [thread overview]
Message-ID: <20200214154854.6746-354-sashal@kernel.org> (raw)
In-Reply-To: <20200214154854.6746-1-sashal@kernel.org>
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
prev parent reply other threads:[~2020-02-14 15:56 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20200214154854.6746-1-sashal@kernel.org>
2020-02-14 15:40 ` [PATCH AUTOSEL 5.5 064/542] MIPS: Loongson: Fix potential NULL dereference in loongson3_platform_init() Sasha Levin
2020-02-14 15:45 ` Sasha Levin [this message]
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