diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.14/950-0226-overlays-Add-overlay-for-missing-AUX-interrupt-contr.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.14/950-0226-overlays-Add-overlay-for-missing-AUX-interrupt-contr.patch | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.14/950-0226-overlays-Add-overlay-for-missing-AUX-interrupt-contr.patch b/target/linux/brcm2708/patches-4.14/950-0226-overlays-Add-overlay-for-missing-AUX-interrupt-contr.patch new file mode 100644 index 0000000000..a43e79f71f --- /dev/null +++ b/target/linux/brcm2708/patches-4.14/950-0226-overlays-Add-overlay-for-missing-AUX-interrupt-contr.patch @@ -0,0 +1,82 @@ +From 8134311059a478a79f7c9c9d08163bafa972fd39 Mon Sep 17 00:00:00 2001 +From: Alexander Graf <agraf@suse.de> +Date: Tue, 20 Feb 2018 17:36:21 +0100 +Subject: [PATCH 226/454] overlays: Add overlay for missing AUX interrupt + controller support (#2391) + +Upstream Linux today does not support the AUX interrupt controller +yet. To make sure it can use our device tree, add an overlay that +reverts it to something upstream understands again. + +See: https://github.com/raspberrypi/firmware/issues/943 + +Signed-off-by: Alexander Graf <agraf@suse.de> +--- + arch/arm/boot/dts/overlays/Makefile | 1 + + arch/arm/boot/dts/overlays/README | 7 ++++ + .../upstream-aux-interrupt-overlay.dts | 33 +++++++++++++++++++ + 3 files changed, 41 insertions(+) + create mode 100644 arch/arm/boot/dts/overlays/upstream-aux-interrupt-overlay.dts + +--- a/arch/arm/boot/dts/overlays/Makefile ++++ b/arch/arm/boot/dts/overlays/Makefile +@@ -122,6 +122,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \ + tinylcd35.dtbo \ + uart0.dtbo \ + uart1.dtbo \ ++ upstream-aux-interrupt.dtbo \ + vc4-fkms-v3d.dtbo \ + vc4-kms-v3d.dtbo \ + vga666.dtbo \ +--- a/arch/arm/boot/dts/overlays/README ++++ b/arch/arm/boot/dts/overlays/README +@@ -1721,6 +1721,13 @@ Params: txd1_pin GPIO pin + rxd1_pin GPIO pin for RXD1 (15, 33 or 41 - default 15) + + ++Name: upstream-aux-interrupt ++Info: Allow usage of downstream .dtb with upstream kernel by binding AUX ++ devices directly to the shared AUX interrupt line. ++Load: dtoverlay=upstream-aux-interrupt ++Params: <None> ++ ++ + Name: vc4-fkms-v3d + Info: Enable Eric Anholt's DRM VC4 V3D driver on top of the dispmanx + display stack. +--- /dev/null ++++ b/arch/arm/boot/dts/overlays/upstream-aux-interrupt-overlay.dts +@@ -0,0 +1,33 @@ ++// Overlay for missing AUX interrupt controller ++// Instead we bind all AUX devices to the generic AUX interrupt line ++/dts-v1/; ++/plugin/; ++ ++/ { ++ compatible = "brcm,bcm2708"; ++ ++ fragment@0 { ++ target = <&uart1>; ++ __overlay__ { ++ interrupt-parent = <&intc>; ++ interrupts = <0x1 0x1d>; ++ }; ++ }; ++ ++ fragment@1 { ++ target = <&spi1>; ++ __overlay__ { ++ interrupt-parent = <&intc>; ++ interrupts = <0x1 0x1d>; ++ }; ++ }; ++ ++ fragment@2 { ++ target = <&spi2>; ++ __overlay__ { ++ interrupt-parent = <&intc>; ++ interrupts = <0x1 0x1d>; ++ }; ++ }; ++}; ++ |