linux-kernel - Re: [PATCH v1] drm/msm: add support for 2.4.1 DSI version for sc7180 soc

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Date:   Tue, 3 Dec 2019 14:34:44 -0800
From:   Rob Clark <robdclark@...il.com>
To:     Matthias Kaehlcke <mka@...omium.org>
Cc:     Harigovindan P <harigovi@...eaurora.org>,
        dri-devel <dri-devel@...ts.freedesktop.org>,
        linux-arm-msm <linux-arm-msm@...r.kernel.org>,
        freedreno <freedreno@...ts.freedesktop.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Sean Paul <seanpaul@...omium.org>,
        "Kristian H. Kristensen" <hoegsberg@...omium.org>,
        Abhinav Kumar <abhinavk@...eaurora.org>,
        Jeykumar Sankaran <jsanka@...eaurora.org>,
        Chandan Uddaraju <chandanu@...eaurora.org>,
        nganji@...eaurora.org
Subject: Re: [PATCH v1] drm/msm: add support for 2.4.1 DSI version for sc7180 soc

On Tue, Dec 3, 2019 at 2:22 PM Matthias Kaehlcke <mka@...omium.org> wrote:
>
> Hi,
>
> On Fri, Nov 29, 2019 at 12:35:05PM +0530, Harigovindan P wrote:
> > Changes in v1:
> >       -Modify commit text to indicate DSI version and SOC detail(Jeffrey Hugo).
> >       -Splitting visionox panel driver code out into a
> >        different patch(set), since panel drivers are merged into
> >        drm-next via a different tree(Rob Clark).
>
> The change log shouldn't be part of the commit message, please place it
> after the '---' separator.

jfyi, the changelog and version #'s showing up in final commit msg is
one thing that drm does differently from other parts of the kernel.
So it is ok to keep the changelog before "---".

But agreed about the need for a commit message (in addition to just
the changelog)

BR,
-R

> I think at least a one line commit message besides the subject is
> mandatory, so if you move the change log down you'll have to add
> some short summary.
>
> > Signed-off-by: Harigovindan P <harigovi@...eaurora.org>
> > ---
> >  drivers/gpu/drm/msm/dsi/dsi_cfg.c | 21 +++++++++++++++++++++
> >  drivers/gpu/drm/msm/dsi/dsi_cfg.h |  1 +
> >  2 files changed, 22 insertions(+)
> >
> > diff --git a/drivers/gpu/drm/msm/dsi/dsi_cfg.c b/drivers/gpu/drm/msm/dsi/dsi_cfg.c
> > index b7b7c1a..7b967dd 100644
> > --- a/drivers/gpu/drm/msm/dsi/dsi_cfg.c
> > +++ b/drivers/gpu/drm/msm/dsi/dsi_cfg.c
> > @@ -133,6 +133,10 @@ static const char * const dsi_sdm845_bus_clk_names[] = {
> >       "iface", "bus",
> >  };
> >
> > +static const char * const dsi_sc7180_bus_clk_names[] = {
> > +     "iface", "bus",
> > +};
> > +
> >  static const struct msm_dsi_config sdm845_dsi_cfg = {
> >       .io_offset = DSI_6G_REG_SHIFT,
> >       .reg_cfg = {
> > @@ -147,6 +151,20 @@ static const struct msm_dsi_config sdm845_dsi_cfg = {
> >       .num_dsi = 2,
> >  };
> >
> > +static const struct msm_dsi_config sc7180_dsi_cfg = {
> > +     .io_offset = DSI_6G_REG_SHIFT,
> > +     .reg_cfg = {
> > +             .num = 1,
> > +             .regs = {
> > +                     {"vdda", 21800, 4 },    /* 1.2 V */
> > +             },
> > +     },
> > +     .bus_clk_names = dsi_sc7180_bus_clk_names,
> > +     .num_bus_clks = ARRAY_SIZE(dsi_sc7180_bus_clk_names),
> > +     .io_start = { 0xae94000 },
> > +     .num_dsi = 1,
> > +};
> > +
> >  const static struct msm_dsi_host_cfg_ops msm_dsi_v2_host_ops = {
> >       .link_clk_enable = dsi_link_clk_enable_v2,
> >       .link_clk_disable = dsi_link_clk_disable_v2,
> > @@ -201,6 +219,9 @@ static const struct msm_dsi_cfg_handler dsi_cfg_handlers[] = {
> >               &msm8998_dsi_cfg, &msm_dsi_6g_v2_host_ops},
> >       {MSM_DSI_VER_MAJOR_6G, MSM_DSI_6G_VER_MINOR_V2_2_1,
> >               &sdm845_dsi_cfg, &msm_dsi_6g_v2_host_ops},
> > +     {MSM_DSI_VER_MAJOR_6G, MSM_DSI_6G_VER_MINOR_V2_4_1,
> > +             &sc7180_dsi_cfg, &msm_dsi_6g_v2_host_ops},
> > +
> >  };
> >
> >  const struct msm_dsi_cfg_handler *msm_dsi_cfg_get(u32 major, u32 minor)
> > diff --git a/drivers/gpu/drm/msm/dsi/dsi_cfg.h b/drivers/gpu/drm/msm/dsi/dsi_cfg.h
> > index e2b7a7d..9919536 100644
> > --- a/drivers/gpu/drm/msm/dsi/dsi_cfg.h
> > +++ b/drivers/gpu/drm/msm/dsi/dsi_cfg.h
> > @@ -19,6 +19,7 @@
> >  #define MSM_DSI_6G_VER_MINOR_V1_4_1  0x10040001
> >  #define MSM_DSI_6G_VER_MINOR_V2_2_0  0x20000000
> >  #define MSM_DSI_6G_VER_MINOR_V2_2_1  0x20020001
> > +#define MSM_DSI_6G_VER_MINOR_V2_4_1  0x20040001
> >
> >  #define MSM_DSI_V2_VER_MINOR_8064    0x0
> >
> > --
> > 2.7.4
> >