From 1c2fa5f846832cbed8b8e6151471436071972e41 Mon Sep 17 00:00:00 2001
From: LABBE Corentin <clabbe.montjoie@gmail.com>
Date: Tue, 27 Jun 2017 11:28:01 +0200
Subject: [PATCH] net: stmmac: support future possible different internal phy
mode
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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>
---
drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c
index fffd6d5fc907b..6c2d1da055888 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c
@@ -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);
--
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