Hi Joe,
On Wed, 2015-07-01 at 18:02 -0400, Tom Rini wrote:
On Wed, Jul 01, 2015 at 10:26:21AM -0500, Joe Hershberger wrote:
Hi Alexey,
On Wed, Jul 1, 2015 at 9:25 AM, Alexey Brodkin Alexey.Brodkin@synopsys.com wrote:
Hi Tom, Joe,
On Wed, 2015-07-01 at 22:22 +0800, Bin Meng wrote:
Hi Alexey,
On Wed, Jul 1, 2015 at 9:59 PM, Alexey Brodkin Alexey.Brodkin@synopsys.com wrote:
http://git.denx.de/?p=u -boot.git;a=patch;h=f566c9949fbdce2e09a900c5343ca9986e5ba360 broke DW GMAC operation if !DM_ETH because eth_write_hwaddr() doesn't exist if !DM_NET.
As for DM_ETH case I'm still not sure if existing implementation will fly.
The point is as it is said in the comment on "soft reset" that is triggered with setting DMAMAC_SRST in "busmode" register HW address gets reset as well. And we inevitably need to set HW address again.
So probably better solution is to move mentioned "soft-reset" from "init" (that is used on start of any network activity) to "initialize" (which is only executed once in "board_r" sequence). But that's a bit of a different story and for now let's just get DW GMAC functional again.
Signed-off-by: Alexey Brodkin abrodkin@synopsys.com Cc: Joe Hershberger joe.hershberger@ni.com Cc: Michal Simek michal.simek@xilinx.com Cc: Tom Rini trini@konsulko.com
drivers/net/designware.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/net/designware.c b/drivers/net/designware.c index ae51cf3..07281a6 100644 --- a/drivers/net/designware.c +++ b/drivers/net/designware.c @@ -243,6 +243,10 @@ static int _dw_eth_init(struct dw_eth_dev *priv, u8 *enetaddr) mdelay(100); };
/* Soft reset above clears HW address registers.* So we have to set it here once again */_dw_write_hwaddr(priv, enetaddr);rx_descs_init(priv); tx_descs_init(priv);--
There is already a patch submitted. Please check http://patchwork.ozlabs.org/patch/484214/
Any chance for mentioned patch "net: designware: Program MAC address to hardware after soft reset" to be applied?
This really fixes GMAC operation and it would be nice to have this fix in upcoming release.
I think that sounds appropriate. Tom?
Yes. Of the handful of recent (in my mind anyhow) net patches, are you going to do a PR for them or should I just grab things?
Any chance to see that patch upstream anytime soon?
-Alexey