linux-kernel - Re: [RESEND PATCH v2 0/3] Bluetooth: power-on QCA6390 correctly

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Message-ID: <CAMRc=MfR4hVAaJmYCyVYg=4bux7KrRE=fkwiZztD5opEY4VDjw@mail.gmail.com>
Date:   Fri, 8 Dec 2023 11:56:49 +0100
From:   Bartosz Golaszewski <brgl@...ev.pl>
To:     Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>,
        Abel Vesa <abel.vesa@...aro.org>
Cc:     Marcel Holtmann <marcel@...tmann.org>,
        Johan Hedberg <johan.hedberg@...il.com>,
        Luiz Augusto von Dentz <luiz.dentz@...il.com>,
        "David S . Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Balakrishna Godavarthi <quic_bgodavar@...cinc.com>,
        Rocky Liao <quic_rjliao@...cinc.com>,
        Alex Elder <elder@...aro.org>,
        Srini Kandagatla <srinivas.kandagatla@...aro.org>,
        linux-bluetooth@...r.kernel.org, netdev@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org,
        Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
Subject: Re: [RESEND PATCH v2 0/3] Bluetooth: power-on QCA6390 correctly

On Fri, Dec 8, 2023 at 11:32 AM Manivannan Sadhasivam
<manivannan.sadhasivam@...aro.org> wrote:
>
> On Fri, Dec 08, 2023 at 10:09:33AM +0100, Bartosz Golaszewski wrote:
> > From: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
> >
> > Resending with all maintainers in CC.
> >
> > Patch 1 is just a typo fix as we're already touching this bindings. The
> > second patch adds more regulator definitions and enforces them for the
> > QCA6390 model. The final patch enables the power sequence for the BT
> > module of QCA6390 in the hci_qca driver.
> >
>
> Is bluetooth fully functional without handling WLAN specific resources like
> regulators, enable GPIO? When I checked last time, the chip requires both
> Bluetooth and WLAN resources to become fully operational.
>

WLAN-specific regulators for PCIe are enabled anyway but the WLAN
enable GPIO is low and the relevant pin function is not even
configured. I can confirm Bluetooth is functional.

I too thought we'd need a common power-sequence here but Abel pointed
out that neither RB5 nor X13s require it, it's only needed in later
models.

Bart

> - Mani
>
> > v1 -> v2:
> > - squashed the two bluetooth patches into one
> > - changed the naming convention for the RFA regulators to follow the
> >   existing ones
> > - added dt-bindings patches
> >
> > Bartosz Golaszewski (3):
> >   dt-bindings: net: bluetooth: qualcomm: fix a typo
> >   dt-bindings: net: bluetooth: qualcomm: add regulators for QCA6390
> >   Bluetooth: qca: run the power-on/off sequence for QCA6390 too
> >
> >  .../net/bluetooth/qualcomm-bluetooth.yaml     | 26 ++++++++++++++++++-
> >  drivers/bluetooth/hci_qca.c                   | 14 +++++++++-
> >  2 files changed, 38 insertions(+), 2 deletions(-)
> >
> > --
> > 2.40.1
> >
> >
>
> --
> மணிவண்ணன் சதாசிவம்