On 06/25/2018 10:50 AM, Bartosz Golaszewski wrote: > From: Bartosz Golaszewski <[email protected]> > > All users which store the MAC address in EEPROM now register relevant > nvmem cells. Switch to retrieving the MAC address over the nvmem > framework. > > Signed-off-by: Bartosz Golaszewski <[email protected]> > --- > drivers/net/ethernet/ti/davinci_emac.c | 29 +++++++++++++++++--------- > 1 file changed, 19 insertions(+), 10 deletions(-) > > diff --git a/drivers/net/ethernet/ti/davinci_emac.c > b/drivers/net/ethernet/ti/davinci_emac.c > index a1a6445b5a7e..22c2322e46be 100644 > --- a/drivers/net/ethernet/ti/davinci_emac.c > +++ b/drivers/net/ethernet/ti/davinci_emac.c > @@ -67,7 +67,7 @@ > #include <linux/of_irq.h> > #include <linux/of_net.h> > #include <linux/mfd/syscon.h> > - > +#include <linux/nvmem-consumer.h> > #include <asm/irq.h> > #include <asm/page.h> > > @@ -1696,7 +1696,6 @@ davinci_emac_of_get_pdata(struct platform_device *pdev, > struct emac_priv *priv) > const struct of_device_id *match; > const struct emac_platform_data *auxdata; > struct emac_platform_data *pdata = NULL; > - const u8 *mac_addr; > > if (!IS_ENABLED(CONFIG_OF) || !pdev->dev.of_node) > return dev_get_platdata(&pdev->dev); > @@ -1708,12 +1707,6 @@ davinci_emac_of_get_pdata(struct platform_device > *pdev, struct emac_priv *priv) > np = pdev->dev.of_node; > pdata->version = EMAC_VERSION_2; > > - if (!is_valid_ether_addr(pdata->mac_addr)) { > - mac_addr = of_get_mac_address(np); > - if (mac_addr) > - ether_addr_copy(pdata->mac_addr, mac_addr); > - } > - Not sure it is correct. of_get_mac_address() is called when board data doesn't provide MAC address with expectation that MAC address is defined in DT (usually by u-boot). Standard DT properties for MAC address "local-mac-address" and "mac-address". So, you can't just drop it and replace with nvmem. Two options are here: 1) try to read MAC-address from nvmem then try DT (as it's now) 2) try to read DT then try nvmem [then random MAC | fail] > of_property_read_u32(np, "ti,davinci-ctrl-reg-offset", > &pdata->ctrl_reg_offset); > > @@ -1783,7 +1776,9 @@ static int davinci_emac_probe(struct platform_device > *pdev) > struct cpdma_params dma_params; > struct clk *emac_clk; > unsigned long emac_bus_frequency; > - > + struct nvmem_cell *cell; > + void *mac_addr; > + size_t mac_addr_len; > > /* obtain emac clock from kernel */ > emac_clk = devm_clk_get(&pdev->dev, NULL); > @@ -1815,8 +1810,22 @@ static int davinci_emac_probe(struct platform_device > *pdev) > goto err_free_netdev; > } > > + cell = nvmem_cell_get(&pdev->dev, "mac-address"); > + if (!IS_ERR(cell)) { > + mac_addr = nvmem_cell_read(cell, &mac_addr_len); > + if (!IS_ERR(mac_addr)) { > + if (is_valid_ether_addr(mac_addr)) { > + dev_info(&pdev->dev, > + "Read MAC addr from EEPROM: %pM\n", > + mac_addr); > + memcpy(priv->mac_addr, mac_addr, ETH_ALEN); > + } > + kfree(mac_addr); > + } > + nvmem_cell_put(cell); > + } > + > /* MAC addr and PHY mask , RMII enable info from platform_data */ > - memcpy(priv->mac_addr, pdata->mac_addr, ETH_ALEN); > priv->phy_id = pdata->phy_id; > priv->rmii_en = pdata->rmii_en; > priv->version = pdata->version; > -- regards, -grygorii
