2016-09-10 12:54:26 +00:00
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From 740fa92fd41e2c4dd5798d462fe4646d0cc6cc48 Mon Sep 17 00:00:00 2001
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2016-07-07 07:22:07 +00:00
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From: David Lechner <david@lechnology.com>
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Date: Mon, 27 Jun 2016 22:52:22 -0500
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2016-09-10 12:54:26 +00:00
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Subject: [PATCH] Add critical information for getting pi3-miniuart-bt overlay
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to work
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2016-07-07 07:22:07 +00:00
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Bluetooth on RPi 3 using uart1 will not work without setting core_freq=250 in config.txt. This is not
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documented anywhere, so this seems like a good place to start.
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---
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arch/arm/boot/dts/overlays/README | 4 +++-
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1 file changed, 3 insertions(+), 1 deletion(-)
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--- a/arch/arm/boot/dts/overlays/README
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+++ b/arch/arm/boot/dts/overlays/README
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@@ -691,7 +691,9 @@ Info: Switch Pi3 Bluetooth function to
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N.B. It is also necessary to edit /lib/systemd/system/hciuart.service
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and replace ttyAMA0 with ttyS0, unless you have a system with udev rules
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that create /dev/serial0 and /dev/serial1, in which case use
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- /dev/serial1 instead because it will always be correct.
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+ /dev/serial1 instead because it will always be correct. Furthermore,
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+ you must also set core_freq=250 in config.txt or the miniuart will not
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+ work.
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Load: dtoverlay=pi3-miniuart-bt
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Params: <None>
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