lede/target/linux/rockchip/patches-5.4/004-arm64-dts-rockchip-Add-txpbl-node-for-RK3399-RK3328.patch
CN_SZTL f4b1b358fe
rockchip: sync latest codes from ImmortalWrt (#6522)
uboot:
 - immortalwrt/immortalwrt@7a042afdee uboot-rockchip: fix RockPro64 boot from eMMC
 - immortalwrt/immortalwrt@f450acefb0 uboot-rockchip: update to v2021.01
 - immortalwrt/immortalwrt@5cc1d3df78 rockchip: improve support for NanoPi R4S
 - immortalwrt/immortalwrt@83d3fb9634 uboot-rockchip: add NanoPi R4S support
 - immortalwrt/immortalwrt@3d86ffedd7 uboot-rockchip: update to v2020.10
 - immortalwrt/immortalwrt@fe5fa0c7ab Revert "uboot-rockchip: fix nanopi-r2s failed to boot on some sd cards"

target:
 - immortalwrt/immortalwrt@f67522e532 rockchip: add support for Radxa Rock Pi 4
 - immortalwrt/immortalwrt@cd7fd0c77b rockchip: add NanoPi R4S support
 - immortalwrt/immortalwrt@02395293a2 rockchip: fix SUPPORTED_DEVICES for Radxa ROCK Pi 4
 - immortalwrt/immortalwrt@c7b200b8a2 rockchip: re-order patches
 - immortalwrt/immortalwrt@aee038e773 rockchip: refresh Kconfig
 - immortalwrt/immortalwrt@22061b2880 kernel: enable CONFIG_LEDS_TRIGGER_HEARTBEAT
 - immortalwrt/immortalwrt@b1150de9e4 rockchip: add missing Kconfig symbols
 - immortalwrt/immortalwrt@ab28d07c3b treewide: fix spelling 'seperate' -> 'separate'
 - immortalwrt/immortalwrt@6401fca74d rockchip: use native mac address for NanoPi R4S

Signed-off-by: Tianling Shen <cnsztl@immortalwrt.org>
2021-03-14 11:52:00 +08:00

55 lines
1.7 KiB
Diff

From 8a469ee35606ba65448d54e5a2a23302f7e79e3c Mon Sep 17 00:00:00 2001
From: Carlos de Paula <me@carlosedp.com>
Date: Tue, 18 Feb 2020 17:10:37 -0500
Subject: [PATCH] arm64: dts: rockchip: Add txpbl node for RK3399/RK3328
Some rockchip SoCs like the RK3399 and RK3328 exhibit an issue
where tx checksumming does not work with packets larger than 1498.
The default Programmable Buffer Length for TX in these GMAC's is
not suitable for MTUs higher than 1498. The workaround is to disable
TX offloading with 'ethtool -K eth0 tx off rx off' causing performance
impacts as it disables hardware checksumming.
This patch sets snps,txpbl to 0x4 which is a safe number tested ok for
the most popular MTU value of 1500.
For reference, see https://lkml.org/lkml/2019/4/1/1382.
Signed-off-by: Carlos de Paula <me@carlosedp.com>
Link: https://lore.kernel.org/r/20200218221040.10955-1-me@carlosedp.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
---
arch/arm64/boot/dts/rockchip/rk3328.dtsi | 2 ++
arch/arm64/boot/dts/rockchip/rk3399.dtsi | 1 +
2 files changed, 3 insertions(+)
--- a/arch/arm64/boot/dts/rockchip/rk3328.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3328.dtsi
@@ -857,6 +857,7 @@
resets = <&cru SRST_GMAC2IO_A>;
reset-names = "stmmaceth";
rockchip,grf = <&grf>;
+ snps,txpbl = <0x4>;
status = "disabled";
};
@@ -878,6 +879,7 @@
reset-names = "stmmaceth", "mac-phy";
phy-mode = "rmii";
phy-handle = <&phy>;
+ snps,txpbl = <0x4>;
status = "disabled";
mdio {
--- a/arch/arm64/boot/dts/rockchip/rk3399.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3399.dtsi
@@ -291,6 +291,7 @@
resets = <&cru SRST_A_GMAC>;
reset-names = "stmmaceth";
rockchip,grf = <&grf>;
+ snps,txpbl = <0x4>;
status = "disabled";
};