[PW_SID:1099303] [v1] Bluetooth: hci_qca: Increase SSR delay for rampatch and NVM loading#233
[PW_SID:1099303] [v1] Bluetooth: hci_qca: Increase SSR delay for rampatch and NVM loading#233BluezTestBot wants to merge 1 commit into
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When bt_en is pulled high by hardware, the host does not re-download the firmware after SSR. The controller loads the rampatch and NVM internally. On HMT chip, due to the large firmware file size, the loading process takes approximately 70ms. The previous 50ms delay is too short, causing the controller to not respond to the reset command sent by the host, which leads to BT initialization failure. Increase the delay to 100ms to ensure the controller has finished loading the firmware before the host sends commands. Steps to reproduce: 1. Trigger SSR and wait for SSR to complete: hcitool cmd 0x3f 0c 26 2. Run "bluetoothctl power on" and observe that BT fails to start. Fixes: fce1a92 ("Bluetooth: hci_qca: Fix SSR (SubSystem Restart) fail when BT_EN is pulled up by hw") Cc: stable@vger.kernel.org Signed-off-by: Shuai Zhang <shuai.zhang@oss.qualcomm.com>
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2 participants
When bt_en is pulled high by hardware, the host does not re-download
the firmware after SSR. The controller loads the rampatch and NVM
internally.
On HMT chip, due to the large firmware file size, the
loading process takes approximately 70ms. The previous 50ms delay is
too short, causing the controller to not respond to the reset command
sent by the host, which leads to BT initialization failure.
Increase the delay to 100ms to ensure the controller has finished
loading the firmware before the host sends commands.
Steps to reproduce:
hcitool cmd 0x3f 0c 26
Fixes: fce1a92 ("Bluetooth: hci_qca: Fix SSR (SubSystem Restart) fail when BT_EN is pulled up by hw")
Cc: stable@vger.kernel.org
Signed-off-by: Shuai Zhang shuai.zhang@oss.qualcomm.com
drivers/bluetooth/hci_qca.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)