Messages in this thread | | | From | Xiaolei Wang <> | Subject | [PATCH 0/2] Add link between phy dev and mac dev | Date | Wed, 16 Nov 2022 22:43:03 +0800 |
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On imx6sx, there are two fec interfaces, but the external phys can only be configured by fec0 mii_bus. That means the fec1 can't work independently, it only work when the fec0 is active. It is alright in the normal boot since the fec0 will be probed first. But then the fec0 maybe moved behind of fec1 in the dpm_list due to various device link. So in system suspend and resume, we would get the following warning when configuring the external phy of fec1 via the fec0 mii_bus due to the inactive of fec0. In order to fix this issue, we create a device link between phy dev and fec0. This will make sure that fec0 is always active when fec1 is in active mode.
Therefore, in order to solve this kind of problem, an interface function phy_mac_link_add is added to establish a link relationship between phy dev and mac dev.
Xiaolei Wang (2): net: phy: Add netdev link when multiple phys share a mdio net: fec: net: fec: Create device link between fec0 and fec1
drivers/net/ethernet/freescale/fec_main.c | 4 +++- drivers/net/phy/phy.c | 21 +++++++++++++++++++++ include/linux/phy.h | 1 + 3 files changed, 25 insertions(+), 1 deletion(-)
-- 2.25.1
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