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From:   Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
To:     lpieralisi@kernel.org, kw@linux.com
Cc:     andersson@kernel.org, konrad.dybcio@linaro.org,
        bhelgaas@google.com, linux-arm-msm@vger.kernel.org,
        linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org,
        abel.vesa@linaro.org,
        Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Subject: [PATCH] PCI: qcom: Add interconnect bandwidth for PCIe Gen4
Date:   Sun, 24 Sep 2023 18:07:13 +0200
Message-Id: <20230924160713.217086-1-manivannan.sadhasivam@linaro.org>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

PCIe Gen4 supports the interconnect bandwidth of 1969 MBps. So let's add
the bandwidth support in the driver. Otherwise, the default bandwidth of
985 MBps will be used.

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
---
 drivers/pci/controller/dwc/pcie-qcom.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c
index 297442c969b6..6853123f92c1 100644
--- a/drivers/pci/controller/dwc/pcie-qcom.c
+++ b/drivers/pci/controller/dwc/pcie-qcom.c
@@ -1384,11 +1384,14 @@ static void qcom_pcie_icc_update(struct qcom_pcie *pcie)
 	case 2:
 		bw = MBps_to_icc(500);
 		break;
+	case 3:
+		bw = MBps_to_icc(985);
+		break;
 	default:
 		WARN_ON_ONCE(1);
 		fallthrough;
-	case 3:
-		bw = MBps_to_icc(985);
+	case 4:
+		bw = MBps_to_icc(1969);
 		break;
 	}
 
-- 
2.25.1