korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-09-22 04:31:58 +08:00
Code Issues Packages Projects Releases Wiki Activity

net: phy: aquantia: wait for the GLOBAL_CFG to start returning real values

Browse Source 
When the PHY is first coming up (or resuming from suspend), it's
possible that although the FW status shows as running, we still see
zeroes in the GLOBAL_CFG set of registers and cannot determine available
modes. Since all models support 10M, add a poll and wait the config to
become available.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Bartosz Golaszewski 2024-07-08 09:50:22 +02:00 committed by David S. Miller
parent ad649a1fac
commit 708405f3e5
1 changed files with 7 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/net/phy/aquantia/aquantia_main.c
View File

@ -652,7 +652,13 @@ static int aqr107_fill_interface_modes(struct phy_device *phydev)
unsigned long *possible = phydev->possible_interfaces;
unsigned int serdes_mode, rate_adapt;
phy_interface_t interface;
int i, val;
int i, val, ret;
ret = phy_read_mmd_poll_timeout(phydev, MDIO_MMD_VEND1,
VEND1_GLOBAL_CFG_10M, val, val != 0,
1000, 100000, false);
if (ret)
return ret;
/* Walk the media-speed configuration registers to determine which
* host-side serdes modes may be used by the PHY depending on the