diff --git a/arch/riscv/boot/dts/sophgo/sg2042-evb-v1.dts b/arch/riscv/boot/dts/sophgo/sg2042-evb-v1.dts
index bc82afab63da23..b116dfa904cd98 100644
--- a/arch/riscv/boot/dts/sophgo/sg2042-evb-v1.dts
+++ b/arch/riscv/boot/dts/sophgo/sg2042-evb-v1.dts
@@ -256,9 +256,9 @@
 	flash@0 {
 		compatible = "jedec,spi-nor";
 		reg = <0>;
-		spi-max-frequency = <100000000>;
-		spi-tx-bus-width = <4>;
-		spi-rx-bus-width = <4>;
+		spi-max-frequency = <50000000>;
+		spi-tx-bus-width = <1>;
+		spi-rx-bus-width = <1>;
 	};
 };
 
@@ -268,9 +268,9 @@
 	flash@0 {
 		compatible = "jedec,spi-nor";
 		reg = <0>;
-		spi-max-frequency = <100000000>;
-		spi-tx-bus-width = <4>;
-		spi-rx-bus-width = <4>;
+		spi-max-frequency = <50000000>;
+		spi-tx-bus-width = <1>;
+		spi-rx-bus-width = <1>;
 	};
 };
 
diff --git a/arch/riscv/boot/dts/sophgo/sg2042-evb-v2.dts b/arch/riscv/boot/dts/sophgo/sg2042-evb-v2.dts
index 5df5a37045e6a7..b2ceae2d8829ec 100644
--- a/arch/riscv/boot/dts/sophgo/sg2042-evb-v2.dts
+++ b/arch/riscv/boot/dts/sophgo/sg2042-evb-v2.dts
@@ -244,9 +244,9 @@
 	flash@0 {
 		compatible = "jedec,spi-nor";
 		reg = <0>;
-		spi-max-frequency = <100000000>;
-		spi-tx-bus-width = <4>;
-		spi-rx-bus-width = <4>;
+		spi-max-frequency = <50000000>;
+		spi-tx-bus-width = <1>;
+		spi-rx-bus-width = <1>;
 	};
 };
 
diff --git a/arch/riscv/boot/dts/sophgo/sg2042-milkv-pioneer.dts b/arch/riscv/boot/dts/sophgo/sg2042-milkv-pioneer.dts
index 452d5f23b5784a..54d8386bf9c0ff 100644
--- a/arch/riscv/boot/dts/sophgo/sg2042-milkv-pioneer.dts
+++ b/arch/riscv/boot/dts/sophgo/sg2042-milkv-pioneer.dts
@@ -156,9 +156,9 @@
 	flash@0 {
 		compatible = "jedec,spi-nor";
 		reg = <0>;
-		spi-max-frequency = <100000000>;
-		spi-tx-bus-width = <4>;
-		spi-rx-bus-width = <4>;
+		spi-max-frequency = <50000000>;
+		spi-tx-bus-width = <1>;
+		spi-rx-bus-width = <1>;
 	};
 };
 
@@ -168,9 +168,9 @@
 	flash@0 {
 		compatible = "jedec,spi-nor";
 		reg = <0>;
-		spi-max-frequency = <100000000>;
-		spi-tx-bus-width = <4>;
-		spi-rx-bus-width = <4>;
+		spi-max-frequency = <50000000>;
+		spi-tx-bus-width = <1>;
+		spi-rx-bus-width = <1>;
 	};
 };
 
diff --git a/drivers/pci/controller/cadence/pcie-sg2042.c b/drivers/pci/controller/cadence/pcie-sg2042.c
index c026e1ca5d6e3f..db91c37790b7dd 100644
--- a/drivers/pci/controller/cadence/pcie-sg2042.c
+++ b/drivers/pci/controller/cadence/pcie-sg2042.c
@@ -78,10 +78,44 @@ static int sg2042_pcie_probe(struct platform_device *pdev)
 static void sg2042_pcie_remove(struct platform_device *pdev)
 {
 	struct cdns_pcie *pcie = platform_get_drvdata(pdev);
+	struct device *dev = &pdev->dev;
+	struct cdns_pcie_rc *rc;
+
+	rc = container_of(pcie, struct cdns_pcie_rc, pcie);
+	cdns_pcie_host_disable(rc);
 
 	cdns_pcie_disable_phy(pcie);
+
+	pm_runtime_disable(dev);
+}
+
+static int sg2042_pcie_suspend_noirq(struct device *dev)
+{
+	struct cdns_pcie *pcie = dev_get_drvdata(dev);
+
+	cdns_pcie_disable_phy(pcie);
+
+	return 0;
 }
 
+static int sg2042_pcie_resume_noirq(struct device *dev)
+{
+	struct cdns_pcie *pcie = dev_get_drvdata(dev);
+	int ret;
+
+	ret = cdns_pcie_enable_phy(pcie);
+	if (ret) {
+		dev_err(dev, "failed to enable PHY\n");
+		return ret;
+	}
+
+	return 0;
+}
+
+static DEFINE_NOIRQ_DEV_PM_OPS(sg2042_pcie_pm_ops,
+			       sg2042_pcie_suspend_noirq,
+			       sg2042_pcie_resume_noirq);
+
 static const struct of_device_id sg2042_pcie_of_match[] = {
 	{ .compatible = "sophgo,sg2042-pcie-host" },
 	{},
@@ -92,7 +126,7 @@ static struct platform_driver sg2042_pcie_driver = {
 	.driver = {
 		.name		= "sg2042-pcie",
 		.of_match_table	= sg2042_pcie_of_match,
-		.pm		= &cdns_pcie_pm_ops,
+		.pm		= pm_sleep_ptr(&sg2042_pcie_pm_ops),
 	},
 	.probe		= sg2042_pcie_probe,
 	.remove		= sg2042_pcie_remove,