已知问题及解决方法 - Qualcomm Dragonwing Documentation

本页记录 Qualcomm Linux 上蓝牙的临时解决方法和已知问题。一旦正式修复在版本中发布，相应条目预计将被删除。请勿在生产部署中依赖本页内容。

解决方法

在 Qualcomm Dragonwing IQ-9075 EVK 上将蓝牙芯片组更改为 QCC2072

默认情况下，Dragonwing IQ-9075 EVK 使用 WCN6855 芯片组软件。要使用 QCC2072，请应用以下更改。 步骤：

将以下补丁保存为文件名 0001-dts-change-bt-from-wcn6855-to-qcc2072.patch。

Subject: [PATCH] linux-qcom-6.18: Replace wcn6855 with qcc2072

Update the Bluetooth chip from wcn6855 to qcc2072
---
 ...emans-evk-Change-bluetooth-from-wcn6.patch | 28 +++++++++++++++++++
 recipes-kernel/linux/linux-qcom_6.18.bb       |  1 +
 2 files changed, 29 insertions(+)
 create mode 100644 recipes-kernel/linux/linux-qcom-6.18/0001-arm64-dts-qcom-lemans-evk-Change-bluetooth-from-wcn6.patch

diff --git a/recipes-kernel/linux/linux-qcom-6.18/0001-arm64-dts-qcom-lemans-evk-Change-bluetooth-from-wcn6.patch b/recipes-kernel/linux/linux-qcom-6.18/0001-arm64-dts-qcom-lemans-evk-Change-bluetooth-from-wcn6.patch
new file mode 100644
index 00000000..8e5ac1b2
--- /dev/null
+++ b/recipes-kernel/linux/linux-qcom-6.18/0001-arm64-dts-qcom-lemans-evk-Change-bluetooth-from-wcn6.patch
@@ -0,0 +1,28 @@

+Subject: [PATCH] arm64: dts: qcom: lemans-evk: Replace wcn6855 with qcc2072
+
+Update the Bluetooth chip from wcn6855 to qcc2072.
+
+Upstream-Status: Pending
+---
+ arch/arm64/boot/dts/qcom/lemans-evk.dts | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/arch/arm64/boot/dts/qcom/lemans-evk.dts b/arch/arm64/boot/dts/qcom/lemans-evk.dts
+index eec8b8a1d9ae..fc0b053f5c4b 100644
+--- a/arch/arm64/boot/dts/qcom/lemans-evk.dts
++++ b/arch/arm64/boot/dts/qcom/lemans-evk.dts
+@@ -1099,7 +1099,7 @@ &uart17 {
+ 	status = "okay";
+ 
+ 	bluetooth: bluetooth {
+-		compatible = "qcom,wcn6855-bt";
++		compatible = "qcom,qcc2072-bt";
+ 		max-speed = <3200000>;
+ 
+ 		vddrfacmn-supply = <&vreg_wcn_3p3>;
+-- 
+2.34.1
+
diff --git a/recipes-kernel/linux/linux-qcom_6.18.bb b/recipes-kernel/linux/linux-qcom_6.18.bb
index a1762ea5..82068146 100644
--- a/recipes-kernel/linux/linux-qcom_6.18.bb
+++ b/recipes-kernel/linux/linux-qcom_6.18.bb
@@ -25,6 +25,7 @@ SRCBRANCH:class-devupstream ?= "branch=qcom-6.18.y"
 SRC_URI = " \
     git://github.com/qualcomm-linux/kernel.git;${SRCBRANCH};protocol=https \
     file://0001-tools-use-basename-to-identify-file-in-gen-mach-type.patch \
+    file://0001-arm64-dts-qcom-lemans-evk-Change-bluetooth-from-wcn6.patch \
 "
 
 # Additional kernel configs.
-- 
2.34.1

将补丁应用到 meta-qcom 代码树。
构建并烧录镜像。
将以下固件文件推送到设备。这些文件可从 linux-firmware 仓库获取。
- ornbcscal11.bin → /lib/firmware/qca/ornbcscal11.bin
- ornbtfw11.tlv → /lib/firmware/qca/ornbtfw11.tlv
- ornnv11.bin → /lib/firmware/qca/ornnv11.bin
重启设备。

设备启动后，QCC2072 蓝牙将正常启动并按预期运行。

已知问题

暂无条目。