[U-Boot] [PATCH] Revert "net: macb: Fixed reading MII_LPA register"

This reverts commit 1b0c9914cc75d1570359181ebd493cd5746cb0ed.
Commit 1b0c9914cc75 ("net: macb: Fixed reading MII_LPA register") causes 100Mbps does not work any more with SiFive FU540 GEM on the HiFive Unleashed board. Revert it.
Signed-off-by: Bin Meng bmeng.cn@gmail.com ---
drivers/net/macb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/macb.c b/drivers/net/macb.c index c99cf66..25f7913 100644 --- a/drivers/net/macb.c +++ b/drivers/net/macb.c @@ -643,7 +643,7 @@ static int macb_phy_init(struct macb_device *macb, const char *name)
/* First check for GMAC and that it is GiB capable */ if (gem_is_gigabit_capable(macb)) { - lpa = macb_mdio_read(macb, MII_LPA); + lpa = macb_mdio_read(macb, MII_STAT1000);
if (lpa & (LPA_1000FULL | LPA_1000HALF | LPA_1000XFULL | LPA_1000XHALF)) {

Hi Radu,
Is there something you can switch on to select the correct register on the appropriate platform?
On Wed, Aug 14, 2019 at 5:31 AM Bin Meng bmeng.cn@gmail.com wrote:
This reverts commit 1b0c9914cc75d1570359181ebd493cd5746cb0ed.
Commit 1b0c9914cc75 ("net: macb: Fixed reading MII_LPA register") causes 100Mbps does not work any more with SiFive FU540 GEM on the HiFive Unleashed board. Revert it.
Signed-off-by: Bin Meng bmeng.cn@gmail.com
Acked-by: Joe Hershberger joe.hershberger@ni.com

Hi Joe,
On Thu, Aug 15, 2019 at 3:03 AM Joe Hershberger joe.hershberger@ni.com wrote:
Hi Radu,
Is there something you can switch on to select the correct register on the appropriate platform?
On Wed, Aug 14, 2019 at 5:31 AM Bin Meng bmeng.cn@gmail.com wrote:
This reverts commit 1b0c9914cc75d1570359181ebd493cd5746cb0ed.
Commit 1b0c9914cc75 ("net: macb: Fixed reading MII_LPA register") causes 100Mbps does not work any more with SiFive FU540 GEM on the HiFive Unleashed board. Revert it.
Signed-off-by: Bin Meng bmeng.cn@gmail.com
Acked-by: Joe Hershberger joe.hershberger@ni.com
Could you please pick this patch for v2019.10?
Regards, Bin

Hi Bin,
On Wed, Sep 4, 2019 at 6:51 AM Bin Meng bmeng.cn@gmail.com wrote:
Hi Joe,
On Thu, Aug 15, 2019 at 3:03 AM Joe Hershberger joe.hershberger@ni.com wrote:
Hi Radu,
Is there something you can switch on to select the correct register on the appropriate platform?
On Wed, Aug 14, 2019 at 5:31 AM Bin Meng bmeng.cn@gmail.com wrote:
This reverts commit 1b0c9914cc75d1570359181ebd493cd5746cb0ed.
Commit 1b0c9914cc75 ("net: macb: Fixed reading MII_LPA register") causes 100Mbps does not work any more with SiFive FU540 GEM on the HiFive Unleashed board. Revert it.
Signed-off-by: Bin Meng bmeng.cn@gmail.com
Acked-by: Joe Hershberger joe.hershberger@ni.com
Could you please pick this patch for v2019.10?
Yes. It's already build-tested and I will send a PR later today.
Cheers, -Joe

On Wed, Sep 4, 2019 at 11:39 PM Joe Hershberger joe.hershberger@ni.com wrote:
Hi Bin,
On Wed, Sep 4, 2019 at 6:51 AM Bin Meng bmeng.cn@gmail.com wrote:
Hi Joe,
On Thu, Aug 15, 2019 at 3:03 AM Joe Hershberger joe.hershberger@ni.com wrote:
Hi Radu,
Is there something you can switch on to select the correct register on the appropriate platform?
On Wed, Aug 14, 2019 at 5:31 AM Bin Meng bmeng.cn@gmail.com wrote:
This reverts commit 1b0c9914cc75d1570359181ebd493cd5746cb0ed.
Commit 1b0c9914cc75 ("net: macb: Fixed reading MII_LPA register") causes 100Mbps does not work any more with SiFive FU540 GEM on the HiFive Unleashed board. Revert it.
Signed-off-by: Bin Meng bmeng.cn@gmail.com
Acked-by: Joe Hershberger joe.hershberger@ni.com
Could you please pick this patch for v2019.10?
Yes. It's already build-tested and I will send a PR later today.
Thank you Joe!
Regards, Bin

On Wed, Aug 14, 2019 at 4:01 PM Bin Meng bmeng.cn@gmail.com wrote:
This reverts commit 1b0c9914cc75d1570359181ebd493cd5746cb0ed.
Commit 1b0c9914cc75 ("net: macb: Fixed reading MII_LPA register") causes 100Mbps does not work any more with SiFive FU540 GEM on the HiFive Unleashed board. Revert it.
Signed-off-by: Bin Meng bmeng.cn@gmail.com
drivers/net/macb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/macb.c b/drivers/net/macb.c index c99cf66..25f7913 100644 --- a/drivers/net/macb.c +++ b/drivers/net/macb.c @@ -643,7 +643,7 @@ static int macb_phy_init(struct macb_device *macb, const char *name)
/* First check for GMAC and that it is GiB capable */ if (gem_is_gigabit_capable(macb)) {
lpa = macb_mdio_read(macb, MII_LPA);
lpa = macb_mdio_read(macb, MII_STAT1000);
You can do this selectively by having boolean flag in macb_config which is only set for SiFive Unleashed.
Regards, Anup
if (lpa & (LPA_1000FULL | LPA_1000HALF | LPA_1000XFULL | LPA_1000XHALF)) {
-- 2.7.4
U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot

On Fri, Aug 16, 2019 at 10:46 AM Anup Patel anup@brainfault.org wrote:
On Wed, Aug 14, 2019 at 4:01 PM Bin Meng bmeng.cn@gmail.com wrote:
This reverts commit 1b0c9914cc75d1570359181ebd493cd5746cb0ed.
Commit 1b0c9914cc75 ("net: macb: Fixed reading MII_LPA register") causes 100Mbps does not work any more with SiFive FU540 GEM on the HiFive Unleashed board. Revert it.
Signed-off-by: Bin Meng bmeng.cn@gmail.com
drivers/net/macb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/macb.c b/drivers/net/macb.c index c99cf66..25f7913 100644 --- a/drivers/net/macb.c +++ b/drivers/net/macb.c @@ -643,7 +643,7 @@ static int macb_phy_init(struct macb_device *macb, const char *name)
/* First check for GMAC and that it is GiB capable */ if (gem_is_gigabit_capable(macb)) {
lpa = macb_mdio_read(macb, MII_LPA);
lpa = macb_mdio_read(macb, MII_STAT1000);
You can do this selectively by having boolean flag in macb_config which is only set for SiFive Unleashed.
That does not look clean to me. I actually don't understand what the issue the previous patch was trying to fix.
Maybe until we know that better we need revert to original codes...
Regards, Bin

Hi Bin,
https://patchwork.ozlabs.org/patch/1146935/ was applied to http://git.denx.de/?p=u-boot/u-boot-net.git
Thanks! -Joe
participants (3)
-
Anup Patel
-
Bin Meng
-
Joe Hershberger