net: macb: add support for sama7g5 gmac

Add support for SAMA7G5 GMAC.

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>

diff --git a/drivers/net/macb.c b/drivers/net/macb.c
index 80ed58d4b9088f79dc077ec2dbb09929cf5696f1..e87ffd9be3ed14fd5b6741efa8c843e2365bbd71 100644 (file)
--- a/drivers/net/macb.c
+++ b/drivers/net/macb.c
@@ -595,6 +595,23 @@ static int macb_sifive_clk_init(struct udevice *dev, ulong rate)
        return 0;
 }
 
+static int macb_sama7g5_clk_init(struct udevice *dev, ulong rate)
+{
+       struct clk clk;
+       int ret;
+
+       ret = clk_get_by_name(dev, "tx_clk", &clk);
+       if (ret)
+               return ret;
+
+       /*
+        * This is for using GCK. Clock rate is addressed via assigned-clock
+        * property, so only clock enable is needed here. The switching to
+        * proper clock rate depending on link speed is managed by IP logic.
+        */
+       return clk_enable(&clk);
+}
+
 int __weak macb_linkspd_cb(struct udevice *dev, unsigned int speed)
 {
 #ifdef CONFIG_CLK
@@ -1430,6 +1447,13 @@ static int macb_eth_of_to_plat(struct udevice *dev)
        return macb_late_eth_of_to_plat(dev);
 }
 
+static const struct macb_usrio_cfg sama7g5_usrio = {
+       .mii = 0,
+       .rmii = 1,
+       .rgmii = 2,
+       .clken = BIT(2),
+};
+
 static const struct macb_config microchip_config = {
        .dma_burst_length = 16,
        .hw_dma_cap = HW_DMA_CAP_64B,
@@ -1451,10 +1475,19 @@ static const struct macb_config sifive_config = {
        .usrio = &macb_default_usrio,
 };
 
+static const struct macb_config sama7g5_gmac_config = {
+       .dma_burst_length = 16,
+       .hw_dma_cap = HW_DMA_CAP_32B,
+       .clk_init = macb_sama7g5_clk_init,
+       .usrio = &sama7g5_usrio,
+};
+
 static const struct udevice_id macb_eth_ids[] = {
        { .compatible = "cdns,macb" },
        { .compatible = "cdns,at91sam9260-macb" },
        { .compatible = "cdns,sam9x60-macb" },
+       { .compatible = "cdns,sama7g5-gem",
+         .data = (ulong)&sama7g5_gmac_config },
        { .compatible = "atmel,sama5d2-gem" },
        { .compatible = "atmel,sama5d3-gem" },
        { .compatible = "atmel,sama5d4-gem", .data = (ulong)&sama5d4_config },