[Buildroot] [RESEND PATCH 1/1] board/raspberrypi_{3_qt5we, cm4io*}: autoprobe of bluetooth driver

From: "Gaël PORTAY" <gael.portay@rtone.fr>
To: buildroot@buildroot.org
Cc: "Gaël PORTAY" <gael.portay@rtone.fr>,
	"Martin Bark" <martin@barkynet.com>,
	"Julien Grossholtz" <julien.grossholtz@openest.io>
Subject: [Buildroot] [RESEND PATCH 1/1] board/raspberrypi_{3_qt5we, cm4io*}: autoprobe of bluetooth driver
Date: Sat, 27 Apr 2024 03:55:17 +0200	[thread overview]
Message-ID: <20240427015517.413015-1-gael.portay@rtone.fr> (raw)

The config.txt of the Rasperry Pi's supporting Wi-Fi and Bluetooth (i.e.
zero W, zero 2 W, 3, and 4) switch the Bluetooth function to use the
mini-UART (ttyS0) and restore UART0 (ttyAMA0) over the GPIOs 14 and 15
(as per miniuart-bt-overlay.dts[1]). All of them turn on the parameter
krnbt to autoprobe the bluetooth driver.

However, the config.txt for Pi 3 (Qt5 WebEngine) and the Compute Module
4 IO (32-bit and 64-bit) add the miniuart-bt overlay as well but do not
turn on the parameter krnbt.

This adds the missing dtparam=krnbt=on for these config.txt for the
beauty of consistency.

[1]: https://github.com/raspberrypi/linux/blob/rpi-5.10.y/arch/arm/boot/dts/overlays/miniuart-bt-overlay.dts

Signed-off-by: Gaël PORTAY <gael.portay@rtone.fr>
---
 board/raspberrypi/config_3_qt5we.txt     | 3 +++
 board/raspberrypi/config_cm4io.txt       | 3 +++
 board/raspberrypi/config_cm4io_64bit.txt | 3 +++
 3 files changed, 9 insertions(+)

diff --git a/board/raspberrypi/config_3_qt5we.txt b/board/raspberrypi/config_3_qt5we.txt
index 752310b179..f68a1f28f5 100644
--- a/board/raspberrypi/config_3_qt5we.txt
+++ b/board/raspberrypi/config_3_qt5we.txt
@@ -24,3 +24,6 @@ gpu_mem_1024=200

 # fixes rpi (3B, 3B+, 3A+, 4B and Zero W) ttyAMA0 serial console
 dtoverlay=miniuart-bt
+
+# enable autoprobing of Bluetooth driver without need of hciattach/btattach
+dtparam=krnbt=on
diff --git a/board/raspberrypi/config_cm4io.txt b/board/raspberrypi/config_cm4io.txt
index cf7e6df1a1..d36795c4ff 100644
--- a/board/raspberrypi/config_cm4io.txt
+++ b/board/raspberrypi/config_cm4io.txt
@@ -25,6 +25,9 @@ gpu_mem_1024=100
 # fixes rpi (3B, 3B+, 3A+, 4B and Zero W) ttyAMA0 serial console
 dtoverlay=miniuart-bt

+# enable autoprobing of Bluetooth driver without need of hciattach/btattach
+dtparam=krnbt=on
+
 # enable RTC
 dtparam=i2c_vc=on
 dtoverlay=i2c-rtc,pcf85063a,i2c_csi_dsi
diff --git a/board/raspberrypi/config_cm4io_64bit.txt b/board/raspberrypi/config_cm4io_64bit.txt
index 813f6eba7b..b5d8406e69 100644
--- a/board/raspberrypi/config_cm4io_64bit.txt
+++ b/board/raspberrypi/config_cm4io_64bit.txt
@@ -25,6 +25,9 @@ gpu_mem_1024=100
 # fixes rpi (3B, 3B+, 3A+, 4B and Zero W) ttyAMA0 serial console
 dtoverlay=miniuart-bt

+# enable autoprobing of Bluetooth driver without need of hciattach/btattach
+dtparam=krnbt=on
+
 # enable RTC
 dtparam=i2c_vc=on
 dtoverlay=i2c-rtc,pcf85063a,i2c_csi_dsi
--
2.44.0

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