On 16 March 2012 04:14, Sachin Kamat <sachin.ka...@linaro.org> wrote: > Hi, > > On 15/03/2012, Mans Rullgard <mans.rullg...@linaro.org> wrote: >> On 14 March 2012 20:04, Jannis Pohlmann <jannis.pohlm...@codethink.co.uk> >> wrote: >>> Hi, >>> >>> I am currently playing with a couple of the development boards for which >>> there are Linaro hwpacks and LEBs. Since what I am trying to do requires >>> a lot of disk and network I/O, I've been paying special attention to the >>> data transfer rates I can get out of these boards. >>> >>> Below is a brief summary of my findings. >>> >>> 3) Origen >>> >>> * the internal USB hub runs at Full Speed (12 MBit/s), resulting in a >>> maximum USB disk I/O of 1.5 MByte/s >>> >>> * since the board does not feature Ethernet itself, I tried to attach >>> a USB Ethernet controller to it, but of course the transfer rate >>> through that is by the I/O upper limit of the USB hub >>> >>> * I did not test wireless but it is not feasible for what I am trying >>> to do anyway >> >> Which kernel version are you using on the Origen? I noticed the same >> problem >> a while back, but it appears to have been fixed in the Samsung landing team >> tree. There is still another bug present in the Origen kernel preventing >> USB-ethernet working with EHCI. Some patches have been posted, but they >> have not made it into the trees yet. > > These patches have been added to Samsung LT tree [1]. > > [1] git://git.linaro.org/landing-teams/working/samsung/kernel.git > (branch: tracking)
That branch still needs one more patch (attached). -- Mans Rullgard / mru
From 2f6d73827ed8e9ca4d815d52022e7639b33c7a3a Mon Sep 17 00:00:00 2001 From: Mans Rullgard <mans.rullg...@linaro.org> Date: Thu, 15 Mar 2012 13:09:06 +0000 Subject: [PATCH] s5p-ehci: set burst_enable platform callback --- arch/arm/plat-samsung/devs.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/arch/arm/plat-samsung/devs.c b/arch/arm/plat-samsung/devs.c index 634835c..9d75981 100644 --- a/arch/arm/plat-samsung/devs.c +++ b/arch/arm/plat-samsung/devs.c @@ -1430,6 +1430,8 @@ void __init s5p_ehci_set_platdata(struct s5p_ehci_platdata *pd) npd->phy_init = s5p_usb_phy_init; if (!npd->phy_exit) npd->phy_exit = s5p_usb_phy_exit; + if (!npd->burst_enable) + npd->burst_enable = s5p_ehci_burst_enable; } #endif /* CONFIG_S5P_DEV_USB_EHCI */ -- 1.7.8.5
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