PCI: qcom: Add ddrss_sf_tbu flag

Qualcomm PCIe driver uses compatible string to check if the ddrss_sf_tbu
clock should be used. Since sc7280 support has added flags, switch to
the new mechanism to check if this clock should be used.

Link: https://lore.kernel.org/r/20220223101435.447839-4-dmitry.baryshkov@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Acked-by: Stanimir Varbanov <svarbanov@mm-sol.com>

drivers/pci/controller/dwc/pcie-qcom.c

@@ -195,6 +195,7 @@ struct qcom_pcie_ops {
 struct qcom_pcie_cfg {
 	const struct qcom_pcie_ops *ops;
 	unsigned int pipe_clk_need_muxing:1;
+	unsigned int has_ddrss_sf_tbu_clk:1;
 };
 
 struct qcom_pcie {
@@ -1164,7 +1165,7 @@ static int qcom_pcie_get_resources_2_7_0(struct qcom_pcie *pcie)
 	res->clks[3].id = "bus_slave";
 	res->clks[4].id = "slave_q2a";
 	res->clks[5].id = "tbu";
-	if (of_device_is_compatible(dev->of_node, "qcom,pcie-sm8250")) {
+	if (pcie->cfg->has_ddrss_sf_tbu_clk) {
 		res->clks[6].id = "ddrss_sf_tbu";
 		res->num_clks = 7;
 	} else {
@@ -1512,6 +1513,7 @@ static const struct qcom_pcie_cfg sdm845_cfg = {
 
 static const struct qcom_pcie_cfg sm8250_cfg = {
 	.ops = &ops_1_9_0,
+	.has_ddrss_sf_tbu_clk = true,
 };
 
 static const struct qcom_pcie_cfg sc7280_cfg = {