diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.15/950-0784-overlays-iqs550-Enable-interrupt-pull-down.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.15/950-0784-overlays-iqs550-Enable-interrupt-pull-down.patch | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.15/950-0784-overlays-iqs550-Enable-interrupt-pull-down.patch b/target/linux/bcm27xx/patches-5.15/950-0784-overlays-iqs550-Enable-interrupt-pull-down.patch new file mode 100644 index 0000000000..21e037f708 --- /dev/null +++ b/target/linux/bcm27xx/patches-5.15/950-0784-overlays-iqs550-Enable-interrupt-pull-down.patch @@ -0,0 +1,46 @@ +From 14ea778d2a5281a0f4c94230abccf30bc72c2bdd Mon Sep 17 00:00:00 2001 +From: Jeff LaBundy <jeff@labundy.com> +Date: Sat, 19 Mar 2022 20:31:30 -0500 +Subject: [PATCH] overlays: iqs550: Enable interrupt pull-down + +The device's active-high interrupt normally serves as a push-pull +output, but becomes high-impedance during bootloader mode. Enable +a pull-down to hold the pin in the inactive state. + +Signed-off-by: Jeff LaBundy <jeff@labundy.com> +--- + arch/arm/boot/dts/overlays/iqs550-overlay.dts | 15 ++++++++++++++- + 1 file changed, 14 insertions(+), 1 deletion(-) + +--- a/arch/arm/boot/dts/overlays/iqs550-overlay.dts ++++ b/arch/arm/boot/dts/overlays/iqs550-overlay.dts +@@ -20,6 +20,8 @@ + reg = <0x74>; + interrupt-parent = <&gpio>; + interrupts = <4 IRQ_TYPE_LEVEL_HIGH>; ++ pinctrl-names = "default"; ++ pinctrl-0 = <&iqs550_pins>; + touchscreen-size-x = <800>; + touchscreen-size-y = <480>; + }; +@@ -34,8 +36,19 @@ + }; + }; + ++ fragment@2 { ++ target = <&gpio>; ++ __overlay__ { ++ iqs550_pins: iqs550_pins { ++ brcm,pins = <4>; ++ brcm,pull = <1>; ++ }; ++ }; ++ }; ++ + __overrides__ { +- interrupt = <&iqs550>,"interrupts:0"; ++ interrupt = <&iqs550>,"interrupts:0", ++ <&iqs550_pins>,"brcm,pins:0"; + reset = <0>,"+1", <&iqs550_reset>,"reset-gpios:4"; + sizex = <&iqs550>,"touchscreen-size-x:0"; + sizey = <&iqs550>,"touchscreen-size-y:0"; |