[PATCH AUTOSEL 5.0 01/66] arm64: dts: rockchip: fix rk3328-roc-cc gmac2io tx/rx_delay

Sasha Levin
2019-04-24T14:33:47Z

From: "Leonidas P. Papadakos" <papadakospan@gmail.com>

[ Upstream commit 924726888f660b2a86382a5dd051ec9ca1b18190 ]

The rk3328-roc-cc board exhibits tx stability issues with large packets,
as does the rock64 board, which was fixed with this patch
https://patchwork.kernel.org/patch/10178969/

A similar patch was merged for the rk3328-roc-cc here
https://patchwork.kernel.org/patch/10804863/
but it doesn't include the tx/rx_delay tweaks, and I find that they
help with an issue where large transfers would bring the ethernet
link down, causing a link reset regularly.

Signed-off-by: Leonidas P. Papadakos <papadakospan@gmail.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Sasha Levin (Microsoft) <sashal@kernel.org>
---
arch/arm64/boot/dts/rockchip/rk3328-roc-cc.dts | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/rockchip/rk3328-roc-cc.dts b/arch/arm64/boot/dts/rockchip/rk3328-roc-cc.dts
index 99d0d9912950..a91f87df662e 100644
--- a/arch/arm64/boot/dts/rockchip/rk3328-roc-cc.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3328-roc-cc.dts
@@ -107,8 +107,8 @@
snps,reset-gpio = <&gpio1 RK_PC2 GPIO_ACTIVE_LOW>;
snps,reset-active-low;
snps,reset-delays-us = <0 10000 50000>;
- tx_delay = <0x25>;
- rx_delay = <0x11>;
+ tx_delay = <0x24>;
+ rx_delay = <0x18>;
status = "okay";
};

--
2.19.1