stmmac: dwmac-sti: Pass sysconfig register offset via syscon dt property.

[deliverable/linux.git] / drivers / net / ethernet / stmicro / stmmac / dwmac-sti.c

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-sti.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-sti.c
index 056b358b4a72441d424a9b3cf0094919e383c600..bb6e2dc61bec7dc8baac541e7bf390759caf017f 100644 (file)
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-sti.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-sti.c
@@ -122,7 +122,7 @@ struct sti_dwmac {
        bool ext_phyclk;        /* Clock from external PHY */
        u32 tx_retime_src;      /* TXCLK Retiming*/
        struct clk *clk;        /* PHY clock */
-       int ctrl_reg;           /* GMAC glue-logic control register */
+       u32 ctrl_reg;           /* GMAC glue-logic control register */
        int clk_sel_reg;        /* GMAC ext clk selection register */
        struct device *dev;
        struct regmap *regmap;
@@ -285,11 +285,6 @@ static int sti_dwmac_parse_data(struct sti_dwmac *dwmac,
        if (!np)
                return -EINVAL;
 
-       res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "sti-ethconf");
-       if (!res)
-               return -ENODATA;
-       dwmac->ctrl_reg = res->start;
-
        /* clk selection from extra syscfg register */
        dwmac->clk_sel_reg = -ENXIO;
        res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "sti-clkconf");
@@ -300,6 +295,12 @@ static int sti_dwmac_parse_data(struct sti_dwmac *dwmac,
        if (IS_ERR(regmap))
                return PTR_ERR(regmap);
 
+       err = of_property_read_u32_index(np, "st,syscon", 1, &dwmac->ctrl_reg);
+       if (err) {
+               dev_err(dev, "Can't get sysconfig ctrl offset (%d)\n", err);
+               return err;
+       }
+
        dwmac->dev = dev;
        dwmac->interface = of_get_phy_mode(np);
        dwmac->regmap = regmap;