[PATCH] Bluetooth: btusb: Add Realtek RTL8821CE device 13d3:3558

[PATCH] Bluetooth: btusb: Add Realtek RTL8821CE device 13d3:3558

[Richard Nunley via B4 Relay]

From: Richard Nunley <richard.w.nunley@gmail.com>

The IMC Networks Bluetooth controller with USB ID 13d3:3558 uses an
RTL8821CE. Without BTUSB_REALTEK, btusb uses generic initialization and
does not load the controller firmware. BLE connections then fail before
pairing with HCI error 0x3e.

Add the device ID to the RTL8821CE table. This enables loading
rtl_bt/rtl8821c_fw.bin and rtl_bt/rtl8821c_config.bin, after which a
BLE HID keyboard pairs successfully.

Signed-off-by: Richard Nunley <richard.w.nunley@gmail.com>
---
Tested on a CachyOS 7.1.6 kernel with BlueZ 5.87 and a Corsair K65
Plus BLE keyboard.
---
 drivers/bluetooth/btusb.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index be82bbbc1..2bae85b00 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -509,6 +509,8 @@ static const struct usb_device_id quirks_table[] = {
 						     BTUSB_WIDEBAND_SPEECH },
 	{ USB_DEVICE(0x13d3, 0x3533), .driver_info = BTUSB_REALTEK |
 						     BTUSB_WIDEBAND_SPEECH },
+	{ USB_DEVICE(0x13d3, 0x3558), .driver_info = BTUSB_REALTEK |
+						     BTUSB_WIDEBAND_SPEECH },
 
 	/* Realtek 8822CE Bluetooth devices */
 	{ USB_DEVICE(0x0bda, 0xb00c), .driver_info = BTUSB_REALTEK |

---
base-commit: 43a556b2fd43f2df6dded59c2e26560a27874c24
change-id: 20260809-master-aecb893ecf35

Best regards,
--  
Richard Nunley <richard.w.nunley@gmail.com>

[PATCH] Bluetooth: btusb: Add Realtek RTL8821CE device 13d3:3558

[Richard Nunley]

The IMC Networks Bluetooth controller with USB ID 13d3:3558 uses an
RTL8821CE. Without BTUSB_REALTEK, btusb uses generic initialization and
does not load the controller firmware. BLE connections then fail before
pairing with HCI error 0x3e.

Add the device ID to the RTL8821CE table. This enables loading
rtl_bt/rtl8821c_fw.bin and rtl_bt/rtl8821c_config.bin, after which a
BLE HID keyboard pairs successfully.

Signed-off-by: Richard Nunley <richard.w.nunley@gmail.com>
---
Tested on a CachyOS 7.1.6 kernel with BlueZ 5.87 and a Corsair K65
Plus BLE keyboard.
---
 drivers/bluetooth/btusb.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index be82bbbc1..2bae85b00 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -509,6 +509,8 @@ static const struct usb_device_id quirks_table[] = {
 						     BTUSB_WIDEBAND_SPEECH },
 	{ USB_DEVICE(0x13d3, 0x3533), .driver_info = BTUSB_REALTEK |
 						     BTUSB_WIDEBAND_SPEECH },
+	{ USB_DEVICE(0x13d3, 0x3558), .driver_info = BTUSB_REALTEK |
+						     BTUSB_WIDEBAND_SPEECH },
 
 	/* Realtek 8822CE Bluetooth devices */
 	{ USB_DEVICE(0x0bda, 0xb00c), .driver_info = BTUSB_REALTEK |

---
base-commit: 43a556b2fd43f2df6dded59c2e26560a27874c24
change-id: 20260809-master-aecb893ecf35

Best regards,
--  
Richard Nunley <richard.w.nunley@gmail.com>

RE: Bluetooth: btusb: Add Realtek RTL8821CE device 13d3:3558

[bluez.test.bot]

[-- Attachment #1: Type: text/plain, Size: 1362 bytes --]

This is automated email and please do not reply to this email!

Dear submitter,

Thank you for submitting the patches to the linux bluetooth mailing list.
This is a CI test results with your patch series:
PW Link:https://patchwork.kernel.org/project/bluetooth/list/?series=1142999

---Test result---

Test Summary:
CheckPatch                    PASS      14.04 seconds
VerifyFixes                   PASS      3.99 seconds
VerifySignedoff               PASS      3.69 seconds
GitLint                       FAIL      4.80 seconds
SubjectPrefix                 PASS      1.71 seconds
BuildKernel                   PASS      27.58 seconds
CheckAllWarning               PASS      30.31 seconds
CheckSparse                   PASS      33.96 seconds
BuildKernel32                 PASS      26.79 seconds
CheckKernelLLVM               SKIP      0.00 seconds
TestRunnerSetup               PASS      507.97 seconds
IncrementalBuild              PASS      35.52 seconds

Details
##############################
Test: GitLint - FAIL
Desc: Run gitlint
Output:
Bluetooth: btusb: Add Realtek RTL8821CE device 13d3:3558

28: B2 Line has trailing whitespace: "--  "
##############################
Test: CheckKernelLLVM - SKIP
Desc: Build kernel with LLVM + context analysis
Output:
Clang not found


https://github.com/bluez/bluetooth-next/pull/564

---
Regards,
Linux Bluetooth

Re: [PATCH] Bluetooth: btusb: Add Realtek RTL8821CE device 13d3:3558

[patchwork-bot+bluetooth]

Hello:

This patch was applied to bluetooth/bluetooth-next.git (master)
by Luiz Augusto von Dentz <luiz.von.dentz@intel.com>:

On Sun, 09 Aug 2026 15:30:50 -0500 you wrote:
> From: Richard Nunley <richard.w.nunley@gmail.com>
> 
> The IMC Networks Bluetooth controller with USB ID 13d3:3558 uses an
> RTL8821CE. Without BTUSB_REALTEK, btusb uses generic initialization and
> does not load the controller firmware. BLE connections then fail before
> pairing with HCI error 0x3e.
> 
> [...]

Here is the summary with links:
  - Bluetooth: btusb: Add Realtek RTL8821CE device 13d3:3558
    https://git.kernel.org/bluetooth/bluetooth-next/c/809a66378e9e

You are awesome, thank you!
-- 
Deet-doot-dot, I am a bot.
https://korg.docs.kernel.org/patchwork/pwbot.html