Hi,
is there a Debian based server distribution with 5.x kernel which supports M1 bluetooth ?
If not, what is missing and what can be done to help support ?

Chris

Hi,
is there a Debian based server distribution with 5.x kernel which supports M1 bluetooth ?
If not, what is missing and what can be done to help support ?

Chris

Because the debug serial port of ROC-3328-PC reuses uart2 to communicate with the Bluetooth serial port, the debug serial port is closed in the kernel and used as UART2. However, after customer feedback and our debugging, we found that the firmware we made cannot be opened on the board, because the first boot will fail to enter the recovery mode.
The reason is that the recovery mode of rk is deeply bound to the debug serial port. If the debug serial port is closed, the recovery will start abnormally, which will make it impossible to boot.Firefly has also tried to modify the recovery of rk, but because the binding is too deep, it also affects subsequent code iterations. So it is good for customers to switch and modify kernel/ when compiling firmware.



The following is the modification and compilation method:

1. First compile recovery.img

Modify kernel/ , close UART2 and open debug serial port

vim kernel/arch/arm64/boot/dts/rockchip/rk3328-roc-pc.dts
./build.sh recovery

Generate SDK/rockdev/recovery.img

--- a/arch/arm64/boot/dts/rockchip/rk3328-roc-pc.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3328-roc-pc.dts
@@ -2,7 +2,7 @@
#include "rk3328-roc-pc.dtsi"

&fiq_debugger {
-       status = "disabled";
+       status = "okay";
};

&wireless_bluetooth {
@@ -11,5 +11,5 @@

&uart2 {
        dma-names = "tx", "rx";
-       status = "okay";
+       status = "disabled";
};

2. Remove the previous kernel/modification, compile uboot and kernel

cd kernel/
git co arch/arm64/boot/dts/rockchip/rk3328-roc-pc.dts
cd ../
./build.sh uboot kernel

3. Package the firmware

./mkfirmware.sh
./build.sh updateimg

Firefly Posted at 2022-7-18 10:58
Because the debug serial port of ROC-3328-PC reuses uart2 to communicate with the Bluetooth serial p ...

Thanks Firefly for your answer.
I'm not sure we need serial debug port. On the last image I've tested (5.19.0-rc3-media) one see there is a problem with the rtl8723ds firmware loading, more specifically with rtl_bt/rtl8723ds_config.bin in which no uart config entry is found by btrtl (RTL: no UART config entry found).
All details at http://ix.io/44Ka (at dmesg 17.5xxxxx).

rtl_bt/rtl8723ds_config.bin is only 10 bytes long. Bad/wrong file ?

Chris

Hi, any news about that ?

Chris

Chris4arm Posted at 2022-8-25 22:59
Hi, any news about that ?

Chris

Hi Chris, sorry for the late reply. The bt-attach.sh script will run when the firefly ubuntu system is turned on. You can refer to it. You also need to open the Bluetooth serial port.

Hi, thanks but isn't it for 4.x kernels ?


In the last 5.x Ubuntu M1 image I know of (posted by @lonewolf31, see https://bbs.stationpc.com/thread-270-1-1.html), I see no  /usr/bin/rtk_hciattach or /usr/bin/bt_fwname called by this script

Chris