shinys000114/linux
1
0
Fork 0
mirror of https://github.com/hardkernel/linux.git synced 2026-06-05 02:21:52 +09:00
Code Issues Packages Projects Releases Wiki Activity

arm64: dts: rockchip: fix rock64 gmac2io stability issues

Browse Source 
[ Upstream commit 73e42e1866 ]

This commit enables thresh dma mode as this forces to disable checksuming,
and chooses delay values which make the interface stable.

These changes are needed, because ROCK64 is faced with two problems:
1. tx checksuming does not work with packets larger than 1498,
2. the default delays for tx/rx are not stable when using 1Gbps connection.

Delays were found out with:
https://github.com/ayufan-rock64/linux-build/tree/master/recipes/gmac-delays-test

Signed-off-by: Kamil Trzciński <ayufan@ayufan.eu>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Kamil Trzciński
2018-01-22 18:46:22 +01:00
committed by Greg Kroah-Hartman
parent 6fc72fd156
commit fa4cf9010e
1 changed files with 3 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
arch/arm64/boot/dts/rockchip/rk3328-rock64.dts
View File

@@ -136,11 +136,12 @@
phy-mode = "rgmii";
pinctrl-names = "default";
pinctrl-0 = <&rgmiim1_pins>;
snps,force_thresh_dma_mode;
snps,reset-gpio = <&gpio1 RK_PC2 GPIO_ACTIVE_LOW>;
snps,reset-active-low;
snps,reset-delays-us = <0 10000 50000>;
tx_delay = <0x26>;
rx_delay = <0x11>;
tx_delay = <0x24>;
rx_delay = <0x18>;
status = "okay";
};