From 9fa750db2d682fa2c124dae609d05d15f93a5e52 Mon Sep 17 00:00:00 2001 From: Phil Elwell Date: Tue, 4 Feb 2020 15:22:55 +0000 Subject: [PATCH] overlays: Fix mcp23017's addr parameter The addr parameter of the mcp23017 overlay was broken by the addition of the noints parameter; splitting the mcp node in two without also modifying the second half from the addr parameter would cause the two halves to separate. Change the implementation strategy to patch fragment 2 (as was originally proposed). This will prevent the overlay from being applied at runtime until the "dtoverlay" command is improved, but the overlay already has this restriction due to fragment 3 so this isn't a step backwards. See: https://github.com/raspberrypi/linux/issues/3449 Signed-off-by: Phil Elwell --- arch/arm/boot/dts/overlays/mcp23017-overlay.dts | 16 +++++++--------- 1 file changed, 7 insertions(+), 9 deletions(-) --- a/arch/arm/boot/dts/overlays/mcp23017-overlay.dts +++ b/arch/arm/boot/dts/overlays/mcp23017-overlay.dts @@ -48,15 +48,13 @@ }; fragment@4 { - target = <&i2c1>; - __overlay__ { - mcp23017_irq: mcp@20 { - #interrupt-cells=<2>; - interrupt-parent = <&gpio>; - interrupts = <4 2>; - interrupt-controller; - microchip,irq-mirror; - }; + target = <&mcp23017>; + mcp23017_irq: __overlay__ { + #interrupt-cells=<2>; + interrupt-parent = <&gpio>; + interrupts = <4 2>; + interrupt-controller; + microchip,irq-mirror; }; };