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As usual these patches were extracted and rebased from the raspberry pi repo: https://github.com/raspberrypi/linux/tree/rpi-4.4.y Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
42 lines
2.0 KiB
Diff
42 lines
2.0 KiB
Diff
From 36b8544e144679820d51eaa2df304037cde3d790 Mon Sep 17 00:00:00 2001
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From: Phil Elwell <phil@raspberrypi.org>
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Date: Thu, 17 Mar 2016 10:16:16 +0000
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Subject: [PATCH] pi3-miniuart-bt-overlay: Correct and clarify info
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Signed-off-by: Phil Elwell <phil@raspberrypi.org>
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---
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arch/arm/boot/dts/overlays/README | 6 ++++--
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arch/arm/boot/dts/overlays/pi3-miniuart-bt-overlay.dts | 6 ++++--
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2 files changed, 8 insertions(+), 4 deletions(-)
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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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@@ -511,8 +511,10 @@ Name: pi3-miniuart-bt
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Info: Switch Pi3 Bluetooth function to use the mini-UART (ttyS0) and restore
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UART0/ttyAMA0 over GPIOs 14 & 15. Note that this may reduce the maximum
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usable baudrate.
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- N.B. It is also necessary to edit /lib/systemd/system/hciuart.server
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- and replace ttyAMA0 with ttyS0.
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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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Load: dtoverlay=pi3-miniuart-bt
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Params: <None>
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--- a/arch/arm/boot/dts/overlays/pi3-miniuart-bt-overlay.dts
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+++ b/arch/arm/boot/dts/overlays/pi3-miniuart-bt-overlay.dts
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@@ -5,8 +5,10 @@
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UART0/ttyAMA0 over GPIOs 14 & 15. Note that this may reduce the maximum
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usable baudrate.
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- It is also necessary to edit /lib/systemd/system/hciuart.server and
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- replace ttyAMA0 with ttyS0.
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+ It is also necessary to edit /lib/systemd/system/hciuart.service and
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+ 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 /dev/serial1
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+ instead because it will always be correct.
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If cmdline.txt uses the alias serial0 to refer to the user-accessable port
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then the firmware will replace with the appropriate port whether or not
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