On 10/12/2021 14:22, Manivannan Sadhasivam wrote:

On Wed, Dec 08, 2021 at 08:14:37PM +0300, Dmitry Baryshkov wrote:

quoted

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.

Signed-off-by: Dmitry Baryshkov <redacted>
---
  drivers/pci/controller/dwc/pcie-qcom.c | 5 ++++-
  1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c
index 51a0475173fb..803d3ac18c56 100644
--- a/drivers/pci/controller/dwc/pcie-qcom.c
+++ b/drivers/pci/controller/dwc/pcie-qcom.c

@@ -194,7 +194,9 @@ struct qcom_pcie_ops {
  
  struct qcom_pcie_cfg {
  	const struct qcom_pcie_ops *ops;
+	/* flags for ops 2.7.0 and 1.9.0 */

No need of this comment.

Dropping it

quoted

  	unsigned int pipe_clk_need_muxing:1;

This should be added in the previous patch.

It exists already

quoted

+	unsigned int has_ddrss_sf_tbu_clk:1;

Wondering if we could make both the flags "bool" as the values passed to it
are of boolean type. I don't think we could save a significant amount of
memory using bitfields.

I followed the existing pipe_clk_need_muxing. I have no strong 
preference here, so let's see what Bjorn will prefer.

Thanks,
Mani

quoted

  };
  
  struct qcom_pcie {

@@ -1164,7 +1166,7 @@ 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 +1514,7 @@ 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 = {

-- 
2.33.0

-- 
With best wishes
Dmitry