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| author | Stefan Chulski <stefanc@marvell.com> | 2021-05-03 08:08:52 +0200 |
|---|---|---|
| committer | Stefan Roese <sr@denx.de> | 2021-05-20 13:03:31 +0200 |
| commit | 27844000ef5f6717570789cace60af76f739f564 (patch) | |
| tree | 5985ed9a479fd2988e159b580776879c48daaa78 | |
| parent | d757c859c758330bccf460d6c192109fc94b1443 (diff) | |
| download | u-boot-27844000ef5f6717570789cace60af76f739f564.tar.gz u-boot-27844000ef5f6717570789cace60af76f739f564.tar.bz2 u-boot-27844000ef5f6717570789cace60af76f739f564.zip | |
net: mvpp2: allow MDIO registration for fixed links
Currently, there are 2 valid cases for interface, PHY
and mdio relation:
- If an interface has PHY handler, it'll call
mdio_mii_bus_get_from_phy(), which will register
MDIO bus.
- If we want to use fixed-link for an interface,
PHY handle is not defined in the DTS, and no
MDIO is registered.
There is a third case, for some boards (with switch),
the MDIO is used for switch configuration, but the interface
itself uses fixed link. This patch allows this option by
checking if fixed-link subnode is defined, in this case,
MDIO bus is registers, but the PHY address is set to
PHY_MAX_ADDR for this interface, so this interface will
not try to access the PHY later on.
Signed-off-by: Stefan Chulski <stefanc@marvell.com>
Signed-off-by: Stefan Roese <sr@denx.de>
| -rw-r--r-- | drivers/net/mvpp2.c | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/drivers/net/mvpp2.c b/drivers/net/mvpp2.c index 3d920e85ff..c5bfe41281 100644 --- a/drivers/net/mvpp2.c +++ b/drivers/net/mvpp2.c @@ -4787,16 +4787,25 @@ static int phy_info_parse(struct udevice *dev, struct mvpp2_port *port) u32 id; u32 phyaddr = 0; int phy_mode = -1; + int fixed_link = 0; int ret; phy_node = fdtdec_lookup_phandle(gd->fdt_blob, port_node, "phy"); + fixed_link = fdt_subnode_offset(gd->fdt_blob, port_node, "fixed-link"); if (phy_node > 0) { int parent; - phyaddr = fdtdec_get_int(gd->fdt_blob, phy_node, "reg", 0); - if (phyaddr < 0) { - dev_err(dev, "could not find phy address\n"); - return -1; + + if (fixed_link != -FDT_ERR_NOTFOUND) { + /* phy_addr is set to invalid value for fixed links */ + phyaddr = PHY_MAX_ADDR; + } else { + phyaddr = fdtdec_get_int(gd->fdt_blob, phy_node, + "reg", 0); + if (phyaddr < 0) { + dev_err(dev, "could not find phy address\n"); + return -1; + } } parent = fdt_parent_offset(gd->fdt_blob, phy_node); ret = uclass_get_device_by_of_offset(UCLASS_MDIO, parent, |