diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.4/0171-BCM270X_DT-Add-pi3-disable-bt-overlay.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.4/0171-BCM270X_DT-Add-pi3-disable-bt-overlay.patch | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.4/0171-BCM270X_DT-Add-pi3-disable-bt-overlay.patch b/target/linux/brcm2708/patches-4.4/0171-BCM270X_DT-Add-pi3-disable-bt-overlay.patch new file mode 100644 index 0000000000..d00439eaa5 --- /dev/null +++ b/target/linux/brcm2708/patches-4.4/0171-BCM270X_DT-Add-pi3-disable-bt-overlay.patch @@ -0,0 +1,96 @@ +From 42a9bb566fe376a1add4b3780c1b830f64500faa Mon Sep 17 00:00:00 2001 +From: Phil Elwell <phil@raspberrypi.org> +Date: Wed, 2 Mar 2016 10:59:05 +0000 +Subject: [PATCH 171/180] BCM270X_DT: Add pi3-disable-bt overlay + +Disable Bluetooth and restore UART0/ttyAMA0 over GPIOs 14 & 15. To disable +the systemd service that initialises the modem so it doesn't use the UART: + + sudo systemctl disable hciuart + +Signed-off-by: Phil Elwell <phil@raspberrypi.org> +--- + arch/arm/boot/dts/overlays/Makefile | 1 + + arch/arm/boot/dts/overlays/README | 8 ++++ + .../boot/dts/overlays/pi3-disable-bt-overlay.dts | 48 ++++++++++++++++++++++ + 3 files changed, 57 insertions(+) + create mode 100644 arch/arm/boot/dts/overlays/pi3-disable-bt-overlay.dts + +--- a/arch/arm/boot/dts/overlays/Makefile ++++ b/arch/arm/boot/dts/overlays/Makefile +@@ -39,6 +39,7 @@ dtb-$(RPI_DT_OVERLAYS) += mcp2515-can0-o + dtb-$(RPI_DT_OVERLAYS) += mcp2515-can1-overlay.dtb + dtb-$(RPI_DT_OVERLAYS) += mmc-overlay.dtb + dtb-$(RPI_DT_OVERLAYS) += mz61581-overlay.dtb ++dtb-$(RPI_DT_OVERLAYS) += pi3-disable-bt-overlay.dtb + dtb-$(RPI_DT_OVERLAYS) += piscreen-overlay.dtb + dtb-$(RPI_DT_OVERLAYS) += piscreen2r-overlay.dtb + dtb-$(RPI_DT_OVERLAYS) += pitft28-capacitive-overlay.dtb +--- a/arch/arm/boot/dts/overlays/README ++++ b/arch/arm/boot/dts/overlays/README +@@ -496,6 +496,14 @@ Params: speed Display + [ The pcf8563-rtc overlay has been deleted. See i2c-rtc. ] + + ++Name: pi3-disable-bt ++Info: Disable Pi3 Bluetooth and restore UART0/ttyAMA0 over GPIOs 14 & 15 ++ N.B. To disable the systemd service that initialises the modem so it ++ doesn't use the UART, use 'sudo systemctl disable hciuart'. ++Load: dtoverlay=pi3-disable-bt ++Params: <None> ++ ++ + Name: piscreen + Info: PiScreen display by OzzMaker.com + Load: dtoverlay=piscreen,<param>=<val> +--- /dev/null ++++ b/arch/arm/boot/dts/overlays/pi3-disable-bt-overlay.dts +@@ -0,0 +1,48 @@ ++/dts-v1/; ++/plugin/; ++ ++/* Disable Bluetooth and restore UART0/ttyAMA0 over GPIOs 14 & 15. ++ To disable the systemd service that initialises the modem so it doesn't use ++ the UART: ++ ++ sudo systemctl disable hciuart ++*/ ++ ++/{ ++ compatible = "brcm,bcm2708"; ++ ++ fragment@0 { ++ target = <&uart1>; ++ __overlay__ { ++ status = "disabled"; ++ }; ++ }; ++ ++ fragment@1 { ++ target = <&uart0>; ++ __overlay__ { ++ pinctrl-names = "default"; ++ pinctrl-0 = <&uart0_pins>; ++ status = "okay"; ++ }; ++ }; ++ ++ fragment@2 { ++ target = <&gpio>; ++ __overlay__ { ++ uart0_pins: uart0_pins { ++ brcm,pins = <14 15>; ++ brcm,function = <4>; /* alt0 */ ++ brcm,pull = <0 2>; ++ }; ++ }; ++ }; ++ ++ fragment@3 { ++ target-path = "/aliases"; ++ __overlay__ { ++ serial0 = "/soc/uart@7e201000"; ++ serial1 = "/soc/uart@7e215040"; ++ }; ++ }; ++}; |