From: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
To: linux-amlogic@lists.infradead.org, netdev@vger.kernel.org,
davem@davemloft.net, khilman@baylibre.com
Cc: linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, balbes-150@yandex.ru,
ingrassia@epigenesys.com, jbrunet@baylibre.com,
linus.luessing@c0d3.blue,
Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Subject: [PATCH 3/3] ARM: dts: meson8m2: mxiii-plus: use the same RGMII TX delay as u-boot
Date: Wed, 25 Dec 2019 01:56:55 +0100 [thread overview]
Message-ID: <20191225005655.1502037-4-martin.blumenstingl@googlemail.com> (raw)
In-Reply-To: <20191225005655.1502037-1-martin.blumenstingl@googlemail.com>
Due to a bug in the MPLL2 clock setup (which is used as input for the
RGMII TX clock) a TX delay of 2ns did not work previously. With a TX
delay of 4ns Ethernet worked enough to get an IP via DHCP but there was
still high packet loss when transmitting data.
Update the TX delay to 2ns - which is the same value that u-boot and the
vendor kernel use - to fix the packet loss when transmitting data.
Fixes: 35ee52bea66c74 ("ARM: dts: meson8m2: add support for the Tronsmart MXIII Plus")
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
---
arch/arm/boot/dts/meson8m2-mxiii-plus.dts | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm/boot/dts/meson8m2-mxiii-plus.dts b/arch/arm/boot/dts/meson8m2-mxiii-plus.dts
index d54477b1001c..fd94b5cbd845 100644
--- a/arch/arm/boot/dts/meson8m2-mxiii-plus.dts
+++ b/arch/arm/boot/dts/meson8m2-mxiii-plus.dts
@@ -71,7 +71,7 @@ ðmac {
phy-handle = <ð_phy0>;
phy-mode = "rgmii";
- amlogic,tx-delay-ns = <4>;
+ amlogic,tx-delay-ns = <2>;
mdio {
compatible = "snps,dwmac-mdio";
--
2.24.1
next prev parent reply other threads:[~2019-12-25 0:58 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-25 0:56 [PATCH 0/3] Meson8b/8m2: Ethernet RGMII TX delay fixes Martin Blumenstingl
2019-12-25 0:56 ` [PATCH 1/3] net: stmmac: dwmac-meson8b: Fix the RGMII TX delay on Meson8b/8m2 SoCs Martin Blumenstingl
2019-12-25 15:08 ` Andrew Lunn
2019-12-25 15:33 ` Martin Blumenstingl
2019-12-26 10:50 ` Andrew Lunn
2019-12-26 11:39 ` Martin Blumenstingl
2019-12-26 12:01 ` Andrew Lunn
2019-12-26 18:17 ` Martin Blumenstingl
2019-12-25 0:56 ` [PATCH 2/3] ARM: dts: meson8b: odroidc1: use the same RGMII TX delay as u-boot Martin Blumenstingl
2019-12-25 0:56 ` Martin Blumenstingl [this message]
2019-12-28 0:33 ` [PATCH 0/3] Meson8b/8m2: Ethernet RGMII TX delay fixes David Miller
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