diff options
| author | Paul Fertser <fercerpav@gmail.com> | 2023-07-13 12:57:43 +0300 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2023-07-18 09:15:40 +0200 |
| commit | 2cee73cef253a333c7d48a0f8edda53e3cca990c (patch) | |
| tree | d8a723bf0fb8fc714346bec74f507edf60cfb8cd /drivers/net/ethernet/faraday | |
| parent | 60cc1f7d0605598b47ee3c0c2b4b6fbd4da50a06 (diff) | |
| download | lwn-2cee73cef253a333c7d48a0f8edda53e3cca990c.tar.gz lwn-2cee73cef253a333c7d48a0f8edda53e3cca990c.zip | |
net: ftgmac100: support getting MAC address from NVMEM
Make use of of_get_ethdev_address() to support reading MAC address not
only from the usual DT nodes but also from an NVMEM provider (e.g. using
a dedicated area in an FRU EEPROM).
Signed-off-by: Paul Fertser <fercerpav@gmail.com>
Link: https://lore.kernel.org/r/20230713095743.30517-1-fercerpav@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'drivers/net/ethernet/faraday')
| -rw-r--r-- | drivers/net/ethernet/faraday/ftgmac100.c | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/drivers/net/ethernet/faraday/ftgmac100.c b/drivers/net/ethernet/faraday/ftgmac100.c index a03879a27b04..9135b918dd49 100644 --- a/drivers/net/ethernet/faraday/ftgmac100.c +++ b/drivers/net/ethernet/faraday/ftgmac100.c @@ -177,16 +177,20 @@ static void ftgmac100_write_mac_addr(struct ftgmac100 *priv, const u8 *mac) iowrite32(laddr, priv->base + FTGMAC100_OFFSET_MAC_LADR); } -static void ftgmac100_initial_mac(struct ftgmac100 *priv) +static int ftgmac100_initial_mac(struct ftgmac100 *priv) { u8 mac[ETH_ALEN]; unsigned int m; unsigned int l; + int err; - if (!device_get_ethdev_address(priv->dev, priv->netdev)) { + err = of_get_ethdev_address(priv->dev->of_node, priv->netdev); + if (err == -EPROBE_DEFER) + return err; + if (!err) { dev_info(priv->dev, "Read MAC address %pM from device tree\n", priv->netdev->dev_addr); - return; + return 0; } m = ioread32(priv->base + FTGMAC100_OFFSET_MAC_MADR); @@ -207,6 +211,8 @@ static void ftgmac100_initial_mac(struct ftgmac100 *priv) dev_info(priv->dev, "Generated random MAC address %pM\n", priv->netdev->dev_addr); } + + return 0; } static int ftgmac100_set_mac_addr(struct net_device *dev, void *p) @@ -1843,7 +1849,9 @@ static int ftgmac100_probe(struct platform_device *pdev) priv->aneg_pause = true; /* MAC address from chip or random one */ - ftgmac100_initial_mac(priv); + err = ftgmac100_initial_mac(priv); + if (err) + goto err_phy_connect; np = pdev->dev.of_node; if (np && (of_device_is_compatible(np, "aspeed,ast2400-mac") || |