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net: stmmac: support future possible different internal phy mode 

The current way to find if the phy is internal is to compare DT phy-mode
and emac_variant/internal_phy.
But it will negate a possible future SoC where an external PHY use the
same phy mode than the internal one.

By using phy-mode = "internal" we permit to have an external PHY with
the same mode than the internal one.

Reported-by: André Przywara <andre.przywara@arm.com>
Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
LABBE Corentin 2017-06-27 11:28:01 +02:00 committed by David S. Miller
parent eac306b4ad
commit 1c2fa5f846
1 changed files with 7 additions and 3 deletions
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10
drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c
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@ -638,7 +638,7 @@ static int sun8i_dwmac_set_syscon(struct stmmac_priv *priv)
{
struct sunxi_priv_data *gmac = priv->plat->bsp_priv;
struct device_node *node = priv->device->of_node;
int ret;
int ret, phy_interface;
u32 reg, val;
regmap_read(gmac->regmap, SYSCON_EMAC_REG, &val);
@ -718,7 +718,11 @@ static int sun8i_dwmac_set_syscon(struct stmmac_priv *priv)
if (gmac->variant->support_rmii)
reg &= ~SYSCON_RMII_EN;
switch (priv->plat->interface) {
phy_interface = priv->plat->interface;
/* if PHY is internal, select the mode (xMII) used by the SoC */
if (gmac->use_internal_phy)
phy_interface = gmac->variant->internal_phy;
switch (phy_interface) {
case PHY_INTERFACE_MODE_MII:
/* default */
break;
@ -932,7 +936,7 @@ static int sun8i_dwmac_probe(struct platform_device *pdev)
}
plat_dat->interface = of_get_phy_mode(dev->of_node);
if (plat_dat->interface == gmac->variant->internal_phy) {
if (plat_dat->interface == PHY_INTERFACE_MODE_INTERNAL) {
dev_info(&pdev->dev, "Will use internal PHY\n");
gmac->use_internal_phy = true;
gmac->ephy_clk = of_clk_get(plat_dat->phy_node, 0);