linux-kernel - Re: [PATCH] arm64: dts: qcom: sc7180-trogdor: Fix lpass dai link for HDMI

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Message-ID: <CAE-0n50qS-SgDTTMq33fu_q_Bnj6xKaKGta48JXQs_uuv_5BWA@mail.gmail.com>
Date:   Wed, 11 Aug 2021 15:41:29 -0700
From:   Stephen Boyd <swboyd@...omium.org>
To:     Doug Anderson <dianders@...omium.org>
Cc:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        LKML <linux-kernel@...r.kernel.org>,
        linux-arm-msm <linux-arm-msm@...r.kernel.org>,
        Srinivasa Rao Mandadapu <srivasam@....qualcomm.com>,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Subject: Re: [PATCH] arm64: dts: qcom: sc7180-trogdor: Fix lpass dai link for HDMI

Quoting Doug Anderson (2021-08-11 15:28:02)
> Hi,
>
> On Wed, Aug 11, 2021 at 12:47 PM Stephen Boyd <swboyd@...omium.org> wrote:
> >
> > This should be the dai for display port. Without this set properly we
> > fail to get audio routed through external displays on trogdor. It looks
> > like we picked up v4[1] of this patch when there was a v7[2]. The v7
> > patch still had the wrong sound-dai but at least we can fix all this up
> > and audio works.
> >
> > Cc: V Sujith Kumar Reddy <vsujithk@...eaurora.org>
> > Cc: Srinivasa Rao Mandadapu <srivasam@....qualcomm.com>
> > Cc: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
> > Fixes: b22d313e1772 ("arm64: dts: qcom: sc7180-trogdor: Add lpass dai link for HDMI")
> > Link: https://lore.kernel.org/r/20210721080549.28822-3-srivasam@qti.qualcomm.com [1]
> > Link: https://lore.kernel.org/r/20210726120910.20335-3-srivasam@codeaurora.org [2]
> > Signed-off-by: Stephen Boyd <swboyd@...omium.org>
> > ---
> >  arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi | 8 ++++----
> >  1 file changed, 4 insertions(+), 4 deletions(-)
>
> There were other changes between v4 and v7. Do we want to take those
> too? Basically two things discussed in my response to v5 [1].

Will you provide a Reviewed-by if I do? :)

>
> 1. I think we don't need `#sound-dai-cells = <0>;`
>
> 2. It seemed marginally better to call the node `hdmi@5`, not `hdmi-primary@5`.
>
> Also, in case you're comparing to v7, it looks like v7 still had a
> bug, though, that your patch fixes. It still had "sound-dai =
> <&lpass_cpu 2>;"
>
> So confusing!

Thanks. Hopefully v2 is better.