On 3/1/2013 8:38 AM, Bo Shen wrote:
Hi All,
On 02/28/2013 08:59 PM, Albert ARIBAUD wrote:
On Sun, 3 Feb 2013 12:19:26 +0100, Albert ARIBAUD albert.u.boot@aribaud.net wrote:
Hi Vipin,
On Fri, 2 Nov 2012 23:09:59 +0530, Vipin Kumarvipin.kumar@st.com wrote:
From: Shiraz Hashimshiraz.hashim@st.com
It is observed on SPEAr320S RMII#1 interface that on transmitting packets the MAC dma hangs randomly and constantly showing busy tx-go state.
It comes out if this situation only when Transmission is disabled and enabled again.
Since it happens randomly and u-boot doesn't require high performance we disable TE and re-enable it on each transmission. We also change number of transmit descriptor to 1 as we would not require more than it, further it would not alter GMAC notion of transmit descriptor start queue as it always point to same descriptor.
Signed-off-by: Shiraz Hashimshiraz.hashim@st.com
drivers/net/macb.c | 38 ++++++++++++++++++++++++++++++++++---- 1 file changed, 34 insertions(+), 4 deletions(-)
Tested on Atmel EK board. It works.
Tested-by: Bo Shen voice.shen@atmel.com
BTW, would this be implemented as a workaround only for SPEAr320S?
Yes, The idea was to implement this only for spear320s After your tested-by, I am thinking may be I can make a separate workaround config which can be enabled by any board using this peripheral.
Is that OK?
Regards Vipin