net: stmmac: dwc-qos: Add FSD EQoS support

The FSD SoC contains two instance of the Synopsys DWC ethernet QOS IP core.
The binding that it uses is slightly different from existing ones because
of the integration (clocks, resets).

Signed-off-by: Swathi K S <swathi.ks@samsung.com>
Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/20250305091246.106626-3-swathi.ks@samsung.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-dwc-qos-eth.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-dwc-qos-eth.c
index 3f0f4ea6cf2e46c746438403d674b5a367172c26..f18fc4f183feb5bc16fff5fcde43dbb5ab20f9a0 100644 (file)
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-dwc-qos-eth.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-dwc-qos-eth.c
@@ -319,6 +319,10 @@ static const struct dwc_eth_dwmac_data tegra_eqos_data = {
        .stmmac_clk_name = "slave_bus",
 };
 
+static const struct dwc_eth_dwmac_data fsd_eqos_data = {
+       .stmmac_clk_name = "slave_bus",
+};
+
 static int dwc_eth_dwmac_probe(struct platform_device *pdev)
 {
        const struct dwc_eth_dwmac_data *data;
@@ -359,7 +363,8 @@ static int dwc_eth_dwmac_probe(struct platform_device *pdev)
        plat_dat->stmmac_clk = dwc_eth_find_clk(plat_dat,
                                                data->stmmac_clk_name);
 
-       ret = data->probe(pdev, plat_dat, &stmmac_res);
+       if (data->probe)
+               ret = data->probe(pdev, plat_dat, &stmmac_res);
        if (ret < 0) {
                dev_err_probe(&pdev->dev, ret, "failed to probe subdriver\n");
                clk_bulk_disable_unprepare(plat_dat->num_clks, plat_dat->clks);
@@ -400,6 +405,7 @@ static void dwc_eth_dwmac_remove(struct platform_device *pdev)
 static const struct of_device_id dwc_eth_dwmac_match[] = {
        { .compatible = "snps,dwc-qos-ethernet-4.10", .data = &dwc_qos_data },
        { .compatible = "nvidia,tegra186-eqos", .data = &tegra_eqos_data },
+       { .compatible = "tesla,fsd-ethqos", .data = &fsd_eqos_data },
        { }
 };
 MODULE_DEVICE_TABLE(of, dwc_eth_dwmac_match);