| Message ID | 20220126073905.3637841-1-adeep@lexina.in (mailing list archive) |
|---|---|
| Headers | show |
| Series | Bluetooth: hci_h5: btrtl: Add support for RTL8822CS hci_ver 0x08 | expand |
Hi Vyacheslav, > 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 v6..v4: > - fix patch description > 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(+) both patches have been applied to bluetooth-next tree. Regards Marcel
26.01.2022 16:40, Marcel Holtmann wrote: > Hi Vyacheslav, > >> 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 v6..v4: >> - fix patch description >> 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(+) > > both patches have been applied to bluetooth-next tree. Thanks! > > Regards > > Marcel >
On Wed, Jan 26, 2022 at 02:40:38PM +0100, Marcel Holtmann wrote: > Hi Vyacheslav, > > > 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 v6..v4: > > - fix patch description > > 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(+) > > both patches have been applied to bluetooth-next tree. Thanks Marcel and Vyacheslav > Regards > > Marcel >