Some ethernet PHY require being reset before a phy-id can be read back on the MDIO bus. This can result in the following message being show on e.g. a Radxa ROCK Pi E v1.21 with a RTL8211F ethernet PHY.
Could not get PHY for ethernet@ff540000: addr -1
Add support to designware ethernet driver to reset eth phy by calling the eth phy uclass function eth_phy_set_mdio_bus(). The call use NULL as bus parameter to not set a shared mdio bus reference that would be freed when probe fails. Also add a eth_phy_get_addr() call to try and get the phy addr from DT when DM_MDIO is disabled.
This help fix ethernet on Radxa ROCK Pi E v1.21:
=> mdio list ethernet@ff540000: 1 - RealTek RTL8211F <--> ethernet@ff540000
Reported-by: Trevor Woerner twoerner@gmail.com Signed-off-by: Jonas Karlman jonas@kwiboo.se --- drivers/net/designware.c | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/drivers/net/designware.c b/drivers/net/designware.c index a174344b3ef5..9aa5d8a1409e 100644 --- a/drivers/net/designware.c +++ b/drivers/net/designware.c @@ -13,6 +13,7 @@ #include <cpu_func.h> #include <dm.h> #include <errno.h> +#include <eth_phy.h> #include <log.h> #include <miiphy.h> #include <malloc.h> @@ -576,6 +577,9 @@ static int dw_phy_init(struct dw_eth_dev *priv, void *dev) struct phy_device *phydev; int ret;
+ if (IS_ENABLED(CONFIG_DM_ETH_PHY)) + eth_phy_set_mdio_bus(dev, NULL); + #if IS_ENABLED(CONFIG_DM_MDIO) phydev = dm_eth_phy_connect(dev); if (!phydev) @@ -583,6 +587,9 @@ static int dw_phy_init(struct dw_eth_dev *priv, void *dev) #else int phy_addr = -1;
+ if (IS_ENABLED(CONFIG_DM_ETH_PHY)) + phy_addr = eth_phy_get_addr(dev); + #ifdef CONFIG_PHY_ADDR phy_addr = CONFIG_PHY_ADDR; #endif