apm821xx: provide legacy interrupts for PCIe in DT

Devices with PCIe-Switches like the WNDR4700, MR24 and WNDAP660
need to have the interrupts property specified in the device-tree
for the legacy pci interrupt signaling method to work.

If the proper interrupt value is not specified, the default INTA
IRQ 12 is taken for all devices. This is especially bad, if the
device is setup to use INTC, because these interrupts will not
be serviced.

Russell Senior reported his experience on the MR24:
"The symptom is client devices can't see the beacons.
Wifi ifaces appear, can scan and hear other networks,
but clients can't see the MR24's SSIDs."

(The interrupts-property on the WNDAP620 was optional since it
uses INTA by default. Likewise the MX60W is in the same category)

Reported-by: Russell Senior <russell@personaltelco.net>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>

5 files changed, 9 insertions, 0 deletions

diff --git a/target/linux/apm821xx/dts/meraki-mr24.dts b/target/linux/apm821xx/dts/meraki-mr24.dts
index 37032fb865..660cf8f789 100644
--- a/target/linux/apm821xx/dts/meraki-mr24.dts
+++ b/target/linux/apm821xx/dts/meraki-mr24.dts
@@ -212,6 +212,7 @@
 					/* Atheros AR9380 2.4GHz */
 					compatible = "pci168c,0030";
 					reg = <0x00430000 0 0 0 0>;
+					interrupts = <3>; /* INTC 4.1.1 */
 				};
 			};
 
@@ -226,6 +227,7 @@
 					/* Atheros AR9380 5GHz */
 					compatible = "pci168c,0030";
 					reg = <0x00440000 0 0 0 0>;
+					interrupts = <4>; /* INTD 4.1.1 */
 				};
 			};
 		};
diff --git a/target/linux/apm821xx/dts/meraki-mx60.dts b/target/linux/apm821xx/dts/meraki-mx60.dts
index 6773028191..9bddbdd25d 100644
--- a/target/linux/apm821xx/dts/meraki-mx60.dts
+++ b/target/linux/apm821xx/dts/meraki-mx60.dts
@@ -189,6 +189,7 @@
 			/* Atheros AR9380 2.4/5GHz */
 			compatible = "pci168c,0030";
 			reg = <0x00410000 0 0 0 0>;
+			interrupts = <1>; /* INTA */
 		};
 	};
 };
diff --git a/target/linux/apm821xx/dts/netgear-wndap620.dts b/target/linux/apm821xx/dts/netgear-wndap620.dts
index e92c5638cb..d72aef4def 100644
--- a/target/linux/apm821xx/dts/netgear-wndap620.dts
+++ b/target/linux/apm821xx/dts/netgear-wndap620.dts
@@ -38,6 +38,7 @@
 			/* Atheros AR9380 5GHz */
 			compatible = "pci168c,0030";
 			reg = <0x00410000 0 0 0 0>;
+			interrupts = <1>; /* INTA */
 		};
 	};
 };
diff --git a/target/linux/apm821xx/dts/netgear-wndap660.dts b/target/linux/apm821xx/dts/netgear-wndap660.dts
index c15970b6b2..e9f45abe0e 100644
--- a/target/linux/apm821xx/dts/netgear-wndap660.dts
+++ b/target/linux/apm821xx/dts/netgear-wndap660.dts
@@ -65,6 +65,7 @@
 					/* Atheros AR9380 2.4/5GHz */
 					compatible = "pci168c,0030";
 					reg = <0x00430000 0 0 0 0>;
+					interrupts = <3>; /* INTC */
 				};
 			};
 
@@ -79,6 +80,7 @@
 					/* Atheros AR9380 2.4/5GHz */
 					compatible = "pci168c,0030";
 					reg = <0x00440000 0 0 0 0>;
+					interrupts = <4>; /* INTD */
 				};
 			};
 		};
diff --git a/target/linux/apm821xx/dts/netgear-wndr4700.dts b/target/linux/apm821xx/dts/netgear-wndr4700.dts
index f711eb7782..0a1b2f4f32 100644
--- a/target/linux/apm821xx/dts/netgear-wndr4700.dts
+++ b/target/linux/apm821xx/dts/netgear-wndr4700.dts
@@ -454,6 +454,7 @@
 					/* Atheros AR9380 5GHz */
 					compatible = "pci168c,0030";
 					reg = <0x00430000 0 0 0 0>;
+					interrupts = <3>; /* INTC */
 					qca,no-eeprom;
 					/* wifi CAL & MAC is stored in nvram */
 
@@ -476,6 +477,7 @@
 					/* Atheros AR9381 2.4GHz */
 					compatible = "pci168c,0033";
 					reg = <0x00440000 0 0 0 0>;
+					interrupts = <4>; /* INTD */
 					qca,no-eeprom;
 					/* wifi CAL & MAC is stored in nvram */
 				};
@@ -492,6 +494,7 @@
 					/* Renesas uPD720202 */
 					compatible = "pci1912,0015";
 					reg = <0x00450000 0 0 0 0>;
+					interrupts = <1>; /* INTA */
 
 					#address-cells = <1>;
 					#size-cells = <0>;