From: Ian Campbell Date: Wed, 25 Mar 2015 13:39:05 +0000 (+0000) Subject: sunxi: set GMAC TX delay = 0x1 on Cubietruck. X-Git-Url: http://git.ipfire.org/?p=people%2Fms%2Fu-boot.git;a=commitdiff_plain;h=a923abc2d3044324e3c88af7776469a31edf3121 sunxi: set GMAC TX delay = 0x1 on Cubietruck. Of 4 boards in our automated test system 2 do not have reliable networking with the default TX delay of 0x0. Increasing to 0x1 seems to make things reliable on all 4 boards. Some previous ad-hpoc tests with tx delay set to 0, 1, 2 and 3 on one of the problematic boards showed: 0: mw.l 0x1c20164 0x006 1 -- t/o in 4/5 tftp runs 1: mw.l 0x1c20164 0x406 1 -- t/o in 1/5 tftp runs 2: mw.l 0x1c20164 0x806 1 -- t/o in 1/5 tftp runs 3: mw.l 0x1c20164 0xc06 1 -- t/o many times in first tftp run For 0, 1 and 2 "t/o" means one or two "T" glitches in the download, but it did complete. For 3 those were basically continuous and it couldn't complete. tftp was of a 16M initrd. Signed-off-by: Ian Campbell Acked-by: Hans de Goede Signed-off-by: Hans de Goede --- diff --git a/configs/Cubietruck_defconfig b/configs/Cubietruck_defconfig index 5c23bc76cd..fa48331fc5 100644 --- a/configs/Cubietruck_defconfig +++ b/configs/Cubietruck_defconfig @@ -1,6 +1,7 @@ CONFIG_SPL=y CONFIG_SYS_EXTRA_OPTIONS="AXP209_POWER,SUNXI_GMAC,RGMII,AHCI,SATAPWR=SUNXI_GPH(12),USB_EHCI" CONFIG_FDTFILE="sun7i-a20-cubietruck.dtb" +CONFIG_GMAC_TX_DELAY=1 CONFIG_VIDEO_VGA=y CONFIG_ARM=y CONFIG_ARCH_SUNXI=y