net: stmmac: dwmac-qcom-ethqos: Enable TBS on all queues but 0

TSO and TBS cannot co-exist. TBS requires special descriptor to be
allocated at bootup. Initialising Tx queues at probe to support
TSO and TBS can help in allocating those resources at bootup.

TX queues with TBS can support etf qdisc hw offload.

This is similar to the patch raised by NXP
commit 3b12ec8f ("net: stmmac: dwmac-imx: set TSO/TBS TX queues default settings")

Tested-by: Andrew Halaney <ahalaney@redhat.com> # sa8775p-ride
Signed-off-by: Abhishek Chauhan <quic_abchauha@quicinc.com>
Reviewed-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Reviewed-by: Andrew Halaney <ahalaney@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c

@@ -728,7 +728,7 @@ static int qcom_ethqos_probe(struct platform_device *pdev)
 	struct stmmac_resources stmmac_res;
 	struct device *dev = &pdev->dev;
 	struct qcom_ethqos *ethqos;
-	int ret;
+	int ret, i;
 
 	ret = stmmac_get_platform_resources(pdev, &stmmac_res);
 	if (ret)
@@ -822,6 +822,10 @@ static int qcom_ethqos_probe(struct platform_device *pdev)
 		plat_dat->serdes_powerdown  = qcom_ethqos_serdes_powerdown;
 	}
 
+	/* Enable TSO on queue0 and enable TBS on rest of the queues */
+	for (i = 1; i < plat_dat->tx_queues_to_use; i++)
+		plat_dat->tx_queues_cfg[i].tbs_en = 1;
+
 	return devm_stmmac_pltfr_probe(pdev, plat_dat, &stmmac_res);
 }