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net: mdio-uclass: add dm_phy_find_by_ofnode() helper

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Add helper to resolve PHY node from it's ofnode via DM MDIO subsystem.

Signed-off-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Ramon Fried <rfried.dev@gmail.com>
Reviewed-by: Stefan Roese <sr@denx.de>
This commit is contained in:
Marek Behún 2022-04-27 12:41:49 +02:00 committed by Stefan Roese
parent a2b2542992
commit 00b1bad961
2 changed files with 31 additions and 0 deletions
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9
include/miiphy.h
View File

@ -188,6 +188,15 @@ int dm_mdio_write(struct udevice *mdio_dev, int addr, int devad, int reg, u16 va
*/
int dm_mdio_reset(struct udevice *mdio_dev);
/**
* dm_phy_find_by_ofnode - Find PHY device by ofnode
*
* @phynode: PHY's ofnode
*
* Return: pointer to phy_device, or NULL on error
*/
struct phy_device *dm_phy_find_by_ofnode(ofnode phynode);
/**
* dm_mdio_phy_connect - Wrapper over phy_connect for DM MDIO
*

22
net/mdio-uclass.c
View File

@ -129,6 +129,28 @@ static int dm_mdio_pre_remove(struct udevice *dev)
return 0;
}
struct phy_device *dm_phy_find_by_ofnode(ofnode phynode)
{
struct mdio_perdev_priv *pdata;
struct udevice *mdiodev;
u32 phy_addr;
if (ofnode_read_u32(phynode, "reg", &phy_addr))
return NULL;
if (uclass_get_device_by_ofnode(UCLASS_MDIO,
ofnode_get_parent(phynode),
&mdiodev))
return NULL;
if (device_probe(mdiodev))
return NULL;
pdata = dev_get_uclass_priv(mdiodev);
return phy_find_by_mask(pdata->mii_bus, BIT(phy_addr));
}
struct phy_device *dm_mdio_phy_connect(struct udevice *mdiodev, int phyaddr,
struct udevice *ethdev,
phy_interface_t interface)