From: Vyacheslav Bocharov <adeep@lexina.in>
To: marcel@holtmann.org, johan.hedberg@gmail.com,
luiz.dentz@gmail.com, linux-bluetooth@vger.kernel.org,
linux-kernel@vger.kernel.org
Cc: Rudi Heitbaum <rudi@heitbaum.com>
Subject: [PATCH v5 0/2] Bluetooth: hci_h5: btrtl: Add support for RTL8822CS hci_ver 0x08
Date: Tue, 25 Jan 2022 19:13:59 +0300 [thread overview]
Message-ID: <20220125161401.729179-1-adeep@lexina.in> (raw)
Add a variation of RTL8822CS with hci_ver = 0x08. This is fully similar
to RTL8822CS with hci_ver = 0x0a observed on the Tanix TX6 Android set-top
box and JetHome JetHub H1.
While testing the RTL8822CS SDIO WiFi/BT adapter, I found that in some
cases the kernel could not initialize it. However, manually resetting the
adapter via gpio allows it to start correctly.
Apparently at system start the adapter is in an undefined state (including
the unknown state of gpio after starting uboot). A forced reset helps to
initialize the adapter in most cases. Experimentally it was found that
100ms is enough to reset.
So, add power reset via enable-gpios in h5_btrtl_open function.
Changes from v4:
- fix patch desription
Changes from v3:
- add has_msft_ext option
Changes from v2:
- align the patches for bluetooth-next
Changes from v1:
- remove Signed-off-by chbgdn <chbgdn@gmail.com> as not reachable
Vyacheslav Bocharov (2):
Bluetooth: btrtl: Add support for RTL8822C hci_ver 0x08
Bluetooth: hci_h5: Add power reset via gpio in h5_btrtl_open
drivers/bluetooth/btrtl.c | 8 ++++++++
drivers/bluetooth/hci_h5.c | 5 +++++
2 files changed, 13 insertions(+)
--
2.30.2
next reply other threads:[~2022-01-25 16:21 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-25 16:13 Vyacheslav Bocharov [this message]
2022-01-25 16:14 ` [PATCH v5 1/2] Bluetooth: btrtl: Add support for RTL8822C hci_ver 0x08 Vyacheslav Bocharov
2022-01-25 16:14 ` [PATCH v5 2/2] Bluetooth: hci_h5: Add power reset via gpio in h5_btrtl_open Vyacheslav Bocharov
2022-01-25 21:42 ` Marcel Holtmann
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