linux-kernel - Re: [PATCH 3/5] drm/msm: mdss: Add X1E80100 support

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Date: Thu, 8 Feb 2024 15:46:28 +0200
From: Abel Vesa <abel.vesa@...aro.org>
To: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Cc: Rob Clark <robdclark@...il.com>,
	Abhinav Kumar <quic_abhinavk@...cinc.com>,
	Sean Paul <sean@...rly.run>,
	Marijn Suijten <marijn.suijten@...ainline.org>,
	David Airlie <airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>,
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
	Maxime Ripard <mripard@...nel.org>,
	Thomas Zimmermann <tzimmermann@...e.de>,
	Rob Herring <robh+dt@...nel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Neil Armstrong <neil.armstrong@...aro.org>,
	linux-arm-msm@...r.kernel.org, dri-devel@...ts.freedesktop.org,
	freedreno@...ts.freedesktop.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/5] drm/msm: mdss: Add X1E80100 support

On 24-02-08 15:42:04, Dmitry Baryshkov wrote:
> On Thu, 8 Feb 2024 at 15:37, Abel Vesa <abel.vesa@...aro.org> wrote:
> >
> > On 24-01-29 17:11:25, Dmitry Baryshkov wrote:
> > > On Mon, 29 Jan 2024 at 15:19, Abel Vesa <abel.vesa@...aro.org> wrote:
> > > >
> > > > Add support for MDSS on X1E80100.
> > > >
> > > > Signed-off-by: Abel Vesa <abel.vesa@...aro.org>
> > > > ---
> > > >  drivers/gpu/drm/msm/msm_mdss.c | 10 ++++++++++
> > > >  1 file changed, 10 insertions(+)
> > > >
> > > > diff --git a/drivers/gpu/drm/msm/msm_mdss.c b/drivers/gpu/drm/msm/msm_mdss.c
> > > > index 455b2e3a0cdd..eddf7fdbb60a 100644
> > > > --- a/drivers/gpu/drm/msm/msm_mdss.c
> > > > +++ b/drivers/gpu/drm/msm/msm_mdss.c
> > > > @@ -564,6 +564,15 @@ static const struct msm_mdss_data sdm670_data = {
> > > >         .highest_bank_bit = 1,
> > > >  };
> > > >
> > > > +static const struct msm_mdss_data x1e80100_data = {
> > > > +       .ubwc_enc_version = UBWC_4_0,
> > > > +       .ubwc_dec_version = UBWC_4_3,
> > > > +       .ubwc_swizzle = 6,
> > > > +       .ubwc_static = 1,
> > > > +       .highest_bank_bit = 2,
> > > > +       .macrotile_mode = 1,
> > >
> > > Missing .reg_bus_bw, LGTM otherwise
> >
> > Dmitry, I do not have the exact value yet.
> >
> > Can I come back with a subsequent (different) patch to add it at a later stage
> > when I have that information?
> >
> > I see no point in holding display support any further since it works
> > fine with the default bandwith.
> >
> > If yes, I'll respin this series right away, but without the reg_bus_bw.
> 
> Please add a TODO or FIXME comment there.

Sure thing. Thanks.

> 
> >
> > >
> > > > +};
> > > > +
> > > >  static const struct msm_mdss_data sdm845_data = {
> > > >         .ubwc_enc_version = UBWC_2_0,
> > > >         .ubwc_dec_version = UBWC_2_0,
> > > > @@ -655,6 +664,7 @@ static const struct of_device_id mdss_dt_match[] = {
> > > >         { .compatible = "qcom,sm8450-mdss", .data = &sm8350_data },
> > > >         { .compatible = "qcom,sm8550-mdss", .data = &sm8550_data },
> > > >         { .compatible = "qcom,sm8650-mdss", .data = &sm8550_data},
> > > > +       { .compatible = "qcom,x1e80100-mdss", .data = &x1e80100_data},
> > > >         {}
> > > >  };
> > > >  MODULE_DEVICE_TABLE(of, mdss_dt_match);
> > > >
> > > > --
> > > > 2.34.1
> > > >
> > >
> > >
> > > --
> > > With best wishes
> > > Dmitry
> 
> 
> 
> -- 
> With best wishes
> Dmitry