linux-kernel - Re: [PATCH v10] arm64: dts: qcom: sc7180: Add WCN3990 WLAN module device node

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Message-ID: <CAD=FV=XXRhh-1cWH5rMPq4W_Dh4yE=++sga_aJ8cwFkKkrAXbg@mail.gmail.com>
Date:   Tue, 19 May 2020 13:07:32 -0700
From:   Doug Anderson <dianders@...omium.org>
To:     Rakesh Pillai <pillair@...eaurora.org>
Cc:     "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        linux-arm-msm <linux-arm-msm@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v10] arm64: dts: qcom: sc7180: Add WCN3990 WLAN module
 device node

Hi,

On Tue, May 19, 2020 at 11:53 AM Rakesh Pillai <pillair@...eaurora.org> wrote:
>
> Add device node for the ath10k SNOC platform driver probe
> and add resources required for WCN3990 on sc7180 soc.
>
> Signed-off-by: Rakesh Pillai <pillair@...eaurora.org>
> ---
> Changes from v9:
> - Place the wlan_fw_mem under reserved-memory node
> ---
>  arch/arm64/boot/dts/qcom/sc7180-idp.dts |  7 +++++++
>  arch/arm64/boot/dts/qcom/sc7180.dtsi    | 27 +++++++++++++++++++++++++++
>  2 files changed, 34 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/qcom/sc7180-idp.dts b/arch/arm64/boot/dts/qcom/sc7180-idp.dts
> index 4e9149d..38b102e 100644
> --- a/arch/arm64/boot/dts/qcom/sc7180-idp.dts
> +++ b/arch/arm64/boot/dts/qcom/sc7180-idp.dts
> @@ -389,6 +389,13 @@
>         };
>  };
>
> +&wifi {
> +       status = "okay";
> +       wifi-firmware {
> +               iommus = <&apps_smmu 0xc2 0x1>;
> +       };
> +};
> +
>  /* PINCTRL - additions to nodes defined in sc7180.dtsi */
>
>  &qspi_clk {
> diff --git a/arch/arm64/boot/dts/qcom/sc7180.dtsi b/arch/arm64/boot/dts/qcom/sc7180.dtsi
> index f1280e0..19bd7d0 100644
> --- a/arch/arm64/boot/dts/qcom/sc7180.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sc7180.dtsi
> @@ -106,6 +106,11 @@
>                         no-map;
>                 };
>
> +               wlan_fw_mem: memory@...00000 {
> +                       reg = <0 0x94100000 0 0x200000>;
> +                       no-map;
> +               };
> +
>                 rmtfs_mem: memory@...00000 {
>                         compatible = "qcom,rmtfs-mem";
>                         reg = <0x0 0x84400000 0x0 0x200000>;

This is less wrong than v9, but still a little wrong.  You should be
keeping these ordered by unit address.  94100000 comes after 84400000.

-Doug