| Message ID | 1427290745-26578-1-git-send-email-ian.campbell@citrix.com |
|---|---|
| State | Accepted |
| Delegated to: | Hans de Goede |
| Headers | show |
Hi, On 25-03-15 14:39, Ian Campbell wrote: > 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 <ian.campbell@citrix.com> Thanks, I've merged this into u-boot-sunxi/master and added this in a small fixed pull-req which I've just send. Regards, Hans > --- > NB, Unlike the normal typo I actually mean to use my citrix address > here, since this was done for/at work. > > Actual testing was done on v2014.10 with the same direct write hack as > BananaPi had in that release (but with value == 1), I can't easily > upgrade the remove machines to something newer. The affect of this > patch is the same and has been tested on a local board, which didn't > have problems to start with however. > --- > configs/Cubietruck_defconfig | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/configs/Cubietruck_defconfig b/configs/Cubietruck_defconfig > index 5c23bc7..fa48331 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 >
diff --git a/configs/Cubietruck_defconfig b/configs/Cubietruck_defconfig index 5c23bc7..fa48331 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
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 <ian.campbell@citrix.com> --- NB, Unlike the normal typo I actually mean to use my citrix address here, since this was done for/at work. Actual testing was done on v2014.10 with the same direct write hack as BananaPi had in that release (but with value == 1), I can't easily upgrade the remove machines to something newer. The affect of this patch is the same and has been tested on a local board, which didn't have problems to start with however. --- configs/Cubietruck_defconfig | 1 + 1 file changed, 1 insertion(+)