[PATCH net-next v4 0/3] Ethernet DWMAC5 fault IRQ support

@@ -37,12 +37,14 @@ properties:
     items:
       - description: Combined signal for various interrupt events
       - description: The interrupt that occurs when Rx exits the LPI state
+      - description: The interrupt that occurs when HW safety error triggered
 
   interrupt-names:
     minItems: 1
     items:
       - const: macirq
-      - const: eth_lpi
+      - enum: [eth_lpi, safety]
+      - const: safety
 
   clocks:
     maxItems: 4

@@ -89,8 +91,9 @@ examples:
                <&gcc GCC_ETH_PTP_CLK>,
                <&gcc GCC_ETH_RGMII_CLK>;
       interrupts = <GIC_SPI 56 IRQ_TYPE_LEVEL_HIGH>,
-                   <GIC_SPI 55 IRQ_TYPE_LEVEL_HIGH>;
-      interrupt-names = "macirq", "eth_lpi";
+                   <GIC_SPI 55 IRQ_TYPE_LEVEL_HIGH>,
+                   <GIC_SPI 782 IRQ_TYPE_LEVEL_HIGH>;
+      interrupt-names = "macirq", "eth_lpi", "safety";
 
       rx-fifo-depth = <4096>;
       tx-fifo-depth = <4096>;

@@ -107,13 +107,15 @@ properties:
       - description: Combined signal for various interrupt events
       - description: The interrupt to manage the remote wake-up packet detection
       - description: The interrupt that occurs when Rx exits the LPI state
+      - description: The interrupt that occurs when HW safety error triggered
 
   interrupt-names:
     minItems: 1
     items:
       - const: macirq
-      - enum: [eth_wake_irq, eth_lpi]
-      - const: eth_lpi
+      - enum: [eth_wake_irq, eth_lpi, safety]
+      - enum: [eth_wake_irq, eth_lpi, safety]
+      - enum: [eth_wake_irq, eth_lpi, safety]
 
   clocks:
     minItems: 1

@@ -2394,8 +2394,9 @@ ethernet1: ethernet@23000000 {
 			      <0x0 0x23016000 0x0 0x100>;
 			reg-names = "stmmaceth", "rgmii";
 
-			interrupts = <GIC_SPI 929 IRQ_TYPE_LEVEL_HIGH>;
-			interrupt-names = "macirq";
+			interrupts = <GIC_SPI 929 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 781 IRQ_TYPE_LEVEL_HIGH>;
+			interrupt-names = "macirq", "safety";
 
 			clocks = <&gcc GCC_EMAC1_AXI_CLK>,
 				 <&gcc GCC_EMAC1_SLV_AHB_CLK>,

@@ -2427,8 +2428,9 @@ ethernet0: ethernet@23040000 {
 			      <0x0 0x23056000 0x0 0x100>;
 			reg-names = "stmmaceth", "rgmii";
 
-			interrupts = <GIC_SPI 946 IRQ_TYPE_LEVEL_HIGH>;
-			interrupt-names = "macirq";
+			interrupts = <GIC_SPI 946 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 782 IRQ_TYPE_LEVEL_HIGH>;
+			interrupt-names = "macirq", "safety";
 
 			clocks = <&gcc GCC_EMAC0_AXI_CLK>,
 				 <&gcc GCC_EMAC0_SLV_AHB_CLK>,

@@ -347,6 +347,7 @@ enum request_irq_err {
 	REQ_IRQ_ERR_SFTY_UE,
 	REQ_IRQ_ERR_SFTY_CE,
 	REQ_IRQ_ERR_LPI,
+	REQ_IRQ_ERR_SAFETY,
 	REQ_IRQ_ERR_WOL,
 	REQ_IRQ_ERR_MAC,
 	REQ_IRQ_ERR_NO,

@@ -33,6 +33,7 @@ struct stmmac_resources {
 	int irq;
 	int sfty_ce_irq;
 	int sfty_ue_irq;
+	int safety_common_irq;
 	int rx_irq[MTL_MAX_RX_QUEUES];
 	int tx_irq[MTL_MAX_TX_QUEUES];
 };

@@ -299,6 +300,7 @@ struct stmmac_priv {
 	unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
 	int sfty_ce_irq;
 	int sfty_ue_irq;
+	int safety_common_irq;
 	int rx_irq[MTL_MAX_RX_QUEUES];
 	int tx_irq[MTL_MAX_TX_QUEUES];
 	/*irq name */

@@ -3592,6 +3592,10 @@ static void stmmac_free_irq(struct net_device *dev,
 		if (priv->wol_irq > 0 && priv->wol_irq != dev->irq)
 			free_irq(priv->wol_irq, dev);
 		fallthrough;
+	case REQ_IRQ_ERR_SAFETY:
+		if (priv->safety_common_irq > 0 && priv->safety_common_irq != dev->irq)
+			free_irq(priv->safety_common_irq, dev);
+		fallthrough;
 	case REQ_IRQ_ERR_WOL:
 		free_irq(dev->irq, dev);
 		fallthrough;

@@ -3798,6 +3802,18 @@ static int stmmac_request_irq_single(struct net_device *dev)
 		}
 	}
 
+	if (priv->safety_common_irq > 0 && priv->safety_common_irq != dev->irq) {
+		ret = request_irq(priv->safety_common_irq, stmmac_safety_interrupt,
+				  0, "safety", dev);
+		if (unlikely(ret < 0)) {
+			netdev_err(priv->dev,
+				   "%s: alloc safety failed %d (error: %d)\n",
+				   __func__, priv->safety_common_irq, ret);
+			irq_err = REQ_IRQ_ERR_SAFETY;
+			goto irq_error;
+		}
+	}
+
 	return 0;
 
 irq_error:

@@ -7464,6 +7480,8 @@ int stmmac_dvr_probe(struct device *device,
 	priv->lpi_irq = res->lpi_irq;
 	priv->sfty_ce_irq = res->sfty_ce_irq;
 	priv->sfty_ue_irq = res->sfty_ue_irq;
+	priv->safety_common_irq = res->safety_common_irq;
+
 	for (i = 0; i < MTL_MAX_RX_QUEUES; i++)
 		priv->rx_irq[i] = res->rx_irq[i];
 	for (i = 0; i < MTL_MAX_TX_QUEUES; i++)

@@ -726,6 +726,15 @@ int stmmac_get_platform_resources(struct platform_device *pdev,
 		dev_info(&pdev->dev, "IRQ eth_lpi not found\n");
 	}
 
+	stmmac_res->safety_common_irq =
+		platform_get_irq_byname_optional(pdev, "safety");
+
+	if (stmmac_res->safety_common_irq < 0) {
+		if (stmmac_res->safety_common_irq == -EPROBE_DEFER)
+			return -EPROBE_DEFER;
+		dev_info(&pdev->dev, "IRQ safety IRQ not found\n");
+	}
+
 	stmmac_res->addr = devm_platform_ioremap_resource(pdev, 0);
 
 	return PTR_ERR_OR_ZERO(stmmac_res->addr);