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From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Sasha Levin <sashal@kernel.org>,
	devicetree@vger.kernel.org, Paul Burton <paulburton@kernel.org>,
	linux-mips@vger.kernel.org, Paul Burton <paul.burton@mips.com>,
	Reto Schneider <reto.schneider@husqvarnagroup.com>,
	linux-mediatek@lists.infradead.org, Stefan Roese <sr@denx.de>,
	linux-arm-kernel@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
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


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Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20200214154854.6746-1-sashal@kernel.org>
2020-02-14 15:41 ` [PATCH AUTOSEL 5.5 089/542] scsi: ufs: Fix ufshcd_probe_hba() reture value in case ufshcd_scsi_add_wlus() fails Sasha Levin
2020-02-14 15:42 ` [PATCH AUTOSEL 5.5 132/542] mt76: mt7615: fix max_nss in mt7615_eeprom_parse_hw_cap Sasha Levin
2020-02-14 15:43 ` [PATCH AUTOSEL 5.5 244/542] drm/mediatek: handle events when enabling/disabling crtc Sasha Levin
2020-02-14 15:45 ` [PATCH AUTOSEL 5.5 311/542] drm/mediatek: Add gamma property according to hardware capability Sasha Levin
2020-02-14 15:45 ` Sasha Levin [this message]
2020-02-14 15:46 ` [PATCH AUTOSEL 5.5 375/542] scsi: ufs: pass device information to apply_dev_quirks Sasha Levin
2020-02-14 15:46 ` [PATCH AUTOSEL 5.5 376/542] scsi: ufs-mediatek: add apply_dev_quirks variant operation Sasha Levin

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