0414-Add-critical-information-for-getting-pi3-miniuart-bt.patch 1.1 KB

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  1. From d5daa09a0c5f5f6acf6f4445f24aa05c09f3b085 Mon Sep 17 00:00:00 2001
  2. From: David Lechner <david@lechnology.com>
  3. Date: Mon, 27 Jun 2016 22:52:22 -0500
  4. Subject: [PATCH] Add critical information for getting pi3-miniuart-bt overlay
  5. to work
  6. Bluetooth on RPi 3 using uart1 will not work without setting core_freq=250 in config.txt. This is not
  7. documented anywhere, so this seems like a good place to start.
  8. ---
  9. arch/arm/boot/dts/overlays/README | 4 +++-
  10. 1 file changed, 3 insertions(+), 1 deletion(-)
  11. --- a/arch/arm/boot/dts/overlays/README
  12. +++ b/arch/arm/boot/dts/overlays/README
  13. @@ -691,7 +691,9 @@ Info: Switch Pi3 Bluetooth function to
  14. N.B. It is also necessary to edit /lib/systemd/system/hciuart.service
  15. and replace ttyAMA0 with ttyS0, unless you have a system with udev rules
  16. that create /dev/serial0 and /dev/serial1, in which case use
  17. - /dev/serial1 instead because it will always be correct.
  18. + /dev/serial1 instead because it will always be correct. Furthermore,
  19. + you must also set core_freq=250 in config.txt or the miniuart will not
  20. + work.
  21. Load: dtoverlay=pi3-miniuart-bt
  22. Params: <None>