[PATCH v2 4/4] PCI: qcom: enable Link retain logic for Hamoa

[Krishna Chaitanya Chundru]

The Hamoa platform supports keeping the PCIe link active across
bootloader and kernel handoff. To take advantage of this, introduce a
specific configuration (cfg_x1e80100) with link_retain = true and
update the device match table to use it.

Tested-by: Qiang Yu <qiang.yu@xxxxxxxxxxxxxxxx>
Signed-off-by: Krishna Chaitanya Chundru <krishna.chundru@xxxxxxxxxxxxxxxx>
---
 drivers/pci/controller/dwc/pcie-qcom.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c
index b061eaa227b3..8496eb87debb 100644
--- a/drivers/pci/controller/dwc/pcie-qcom.c
+++ b/drivers/pci/controller/dwc/pcie-qcom.c
@@ -1557,6 +1557,12 @@ static const struct qcom_pcie_cfg cfg_sc8280xp = {
 	.no_l0s = true,
 };
 
+static const struct qcom_pcie_cfg cfg_x1e80100 = {
+	.ops = &ops_1_21_0,
+	.no_l0s = true,
+	.link_retain = true,
+};
+
 static const struct qcom_pcie_cfg cfg_fw_managed = {
 	.firmware_managed = true,
 };
@@ -2199,7 +2205,7 @@ 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_sc8280xp },
+	{ .compatible = "qcom,pcie-x1e80100", .data = &cfg_x1e80100 },
 	{ }
 };
 

-- 
2.34.1