diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.4/0415-Add-critical-information-for-getting-pi3-miniuart-bt.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.4/0415-Add-critical-information-for-getting-pi3-miniuart-bt.patch | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.4/0415-Add-critical-information-for-getting-pi3-miniuart-bt.patch b/target/linux/brcm2708/patches-4.4/0415-Add-critical-information-for-getting-pi3-miniuart-bt.patch new file mode 100644 index 0000000000..dc3871d5b6 --- /dev/null +++ b/target/linux/brcm2708/patches-4.4/0415-Add-critical-information-for-getting-pi3-miniuart-bt.patch @@ -0,0 +1,25 @@ +From 740fa92fd41e2c4dd5798d462fe4646d0cc6cc48 Mon Sep 17 00:00:00 2001 +From: David Lechner <david@lechnology.com> +Date: Mon, 27 Jun 2016 22:52:22 -0500 +Subject: [PATCH] Add critical information for getting pi3-miniuart-bt overlay + to work + +Bluetooth on RPi 3 using uart1 will not work without setting core_freq=250 in config.txt. This is not +documented anywhere, so this seems like a good place to start. +--- + arch/arm/boot/dts/overlays/README | 4 +++- + 1 file changed, 3 insertions(+), 1 deletion(-) + +--- a/arch/arm/boot/dts/overlays/README ++++ b/arch/arm/boot/dts/overlays/README +@@ -691,7 +691,9 @@ Info: Switch Pi3 Bluetooth function to + N.B. It is also necessary to edit /lib/systemd/system/hciuart.service + and replace ttyAMA0 with ttyS0, unless you have a system with udev rules + that create /dev/serial0 and /dev/serial1, in which case use +- /dev/serial1 instead because it will always be correct. ++ /dev/serial1 instead because it will always be correct. Furthermore, ++ you must also set core_freq=250 in config.txt or the miniuart will not ++ work. + Load: dtoverlay=pi3-miniuart-bt + Params: <None> + |