diff mbox series

[v8,4/5] PCI: qcom: Disable ASPM L0s for X1E80100

Message ID 20241101030902.579789-5-quic_qianyu@quicinc.com
State New
Headers show
Series Add support for PCIe3 on x1e80100 | expand

Commit Message

Qiang Yu Nov. 1, 2024, 3:09 a.m. UTC 
Currently, the cfg_1_9_0 which is being used for X1E80100 doesn't disable
ASPM L0s. However, hardware team recommends to disable L0s as the PHY init
sequence is not tuned support L0s. Hence reuse cfg_sc8280xp for X1E80100.

Note that the config_sid() callback is not present in cfg_sc8280xp, don't
concern about this because config_sid() callback is originally a no-op
for X1E80100.

Signed-off-by: Qiang Yu <quic_qianyu@quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
---
 drivers/pci/controller/dwc/pcie-qcom.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Johan Hovold Nov. 4, 2024, 2:29 p.m. UTC | #1 
On Thu, Oct 31, 2024 at 08:09:01PM -0700, Qiang Yu wrote:
> Currently, the cfg_1_9_0 which is being used for X1E80100 doesn't disable
> ASPM L0s. However, hardware team recommends to disable L0s as the PHY init
> sequence is not tuned support L0s. Hence reuse cfg_sc8280xp for X1E80100.
> 
> Note that the config_sid() callback is not present in cfg_sc8280xp, don't
> concern about this because config_sid() callback is originally a no-op
> for X1E80100.
> 
> Signed-off-by: Qiang Yu <quic_qianyu@quicinc.com>
> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
> Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>

This one should also have been marked for backporting:

Fixes: 6d0c39324c5f ("PCI: qcom: Add X1E80100 PCIe support")
Cc: stable@vger.kernel.org	# 6.9

Looks much better now either way:

Reviewed-by: Johan Hovold <johan+linaro@kernel.org>
Krzysztof Wilczyński Nov. 4, 2024, 2:59 p.m. UTC | #2 
Hello,

[...]
> This one should also have been marked for backporting:
> 
> Fixes: 6d0c39324c5f ("PCI: qcom: Add X1E80100 PCIe support")
> Cc: stable@vger.kernel.org	# 6.9

Added.

> Looks much better now either way:
> 
> Reviewed-by: Johan Hovold <johan+linaro@kernel.org>

Also added.  Thank you!

	Krzysztof
diff mbox series

Patch

diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c
index 52e3d71028d8..16af237663ec 100644
--- a/drivers/pci/controller/dwc/pcie-qcom.c
+++ b/drivers/pci/controller/dwc/pcie-qcom.c
@@ -1853,7 +1853,7 @@  static const struct of_device_id qcom_pcie_match[] = {
 	{ .compatible = "qcom,pcie-sm8450-pcie0", .data = &cfg_1_9_0 },
 	{ .compatible = "qcom,pcie-sm8450-pcie1", .data = &cfg_1_9_0 },
 	{ .compatible = "qcom,pcie-sm8550", .data = &cfg_1_9_0 },
-	{ .compatible = "qcom,pcie-x1e80100", .data = &cfg_1_9_0 },
+	{ .compatible = "qcom,pcie-x1e80100", .data = &cfg_sc8280xp },
 	{ }
 };