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Date:   Tue, 2 Feb 2021 11:46:19 +0530
From:   Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
To:     Rob Herring <robh+dt@kernel.org>
Cc:     Dmitry Baryshkov <dmitry.baryshkov@linaro.org>,
        Andy Gross <agross@kernel.org>,
        Bjorn Andersson <bjorn.andersson@linaro.org>,
        Arnd Bergmann <arnd@arndb.de>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Stanimir Varbanov <svarbanov@mm-sol.com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
        Bjorn Helgaas <bhelgaas@google.com>,
        linux-arm-msm <linux-arm-msm@vger.kernel.org>,
        devicetree@vger.kernel.org,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        PCI <linux-pci@vger.kernel.org>
Subject: Re: [PATCH v2 5/5] arm64: dts: qcom: Add Bluetooth support on RB5
Message-ID: <20210202061619.GA13607@thinkpad>
References: <20210128175225.3102958-1-dmitry.baryshkov@linaro.org>
 <20210128175225.3102958-6-dmitry.baryshkov@linaro.org>
 <CAL_Jsq+nNRv3KceHthgktHR1oRMs+eKWC4O7n0k78izs1aTPfA@mail.gmail.com>
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On Thu, Jan 28, 2021 at 01:15:22PM -0600, Rob Herring wrote:
> On Thu, Jan 28, 2021 at 11:52 AM Dmitry Baryshkov
> <dmitry.baryshkov@linaro.org> wrote:
> >
> > From: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
> >
> > Add Bluetooth support on RB5 using the onboard QCA6391 WLAN+BT chipset.
> >
> > Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
> > [DB: added qca6391 power domain, removed s2f regulator]
> > Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
> > ---
> >  arch/arm64/boot/dts/qcom/qrb5165-rb5.dts | 29 ++++++++++++++++++++++++
> >  1 file changed, 29 insertions(+)
> >
> > diff --git a/arch/arm64/boot/dts/qcom/qrb5165-rb5.dts b/arch/arm64/boot/dts/qcom/qrb5165-rb5.dts
> > index b39a9729395f..c65c13994a86 100644
> > --- a/arch/arm64/boot/dts/qcom/qrb5165-rb5.dts
> > +++ b/arch/arm64/boot/dts/qcom/qrb5165-rb5.dts
> > @@ -19,6 +19,7 @@ / {
> >         compatible = "qcom,qrb5165-rb5", "qcom,sm8250";
> >
> >         aliases {
> > +               hsuart0 = &uart6;
> 
> Serial devices should be 'serialN'. Don't add custom aliases.
> 

Sorry, this is needed by the serial driver:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/tty/serial/qcom_geni_serial.c#n1364

Thanks,
Mani

> >                 serial0 = &uart12;
> >                 sdhc2 = &sdhc_2;
> 
> BTW, this should be dropped too.
> 
> >         };
> > @@ -689,6 +690,26 @@ &pm8150_rtc {
> >         status = "okay";
> >  };
> >
> > +&qup_uart6_default {
> > +       ctsrx {
> > +               pins = "gpio16", "gpio19";
> > +               drive-strength = <2>;
> > +               bias-disable;
> > +       };
> > +
> > +       rts {
> > +               pins = "gpio17";
> > +               drive-strength = <2>;
> > +               bias-disable;
> > +       };
> > +
> > +       tx {
> > +               pins = "gpio18";
> > +               drive-strength = <2>;
> > +               bias-pull-up;
> > +       };
> > +};
> > +
> >  &qupv3_id_0 {
> >         status = "okay";
> >  };
> > @@ -1194,6 +1215,14 @@ wlan-en {
> >         };
> >  };
> >
> > +&uart6 {
> > +       status = "okay";
> > +       bluetooth {
> > +               compatible = "qcom,qca6390-bt";
> > +               power-domains = <&qca6391>;
> > +       };
> > +};
> > +
> >  &uart12 {
> >         status = "okay";
> >  };
> > --
> > 2.29.2
> >