linux-kernel - Re: [PATCH] drivers: gpu: drm: Add MDP5 configuration for MSM8x36 and its derivatives, such as MSM8939.

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Date:   Mon, 11 May 2020 11:18:07 -0600
From:   Jeffrey Hugo <jeffrey.l.hugo@...il.com>
To:     Konrad Dybcio <konradybcio@...il.com>
Cc:     skrzynka@...radybcio.pl, Rob Clark <robdclark@...il.com>,
        Sean Paul <sean@...rly.run>, David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Allison Randal <allison@...utok.net>,
        Alexios Zavras <alexios.zavras@...el.com>,
        zhengbin <zhengbin13@...wei.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        AngeloGioacchino Del Regno <kholk11@...il.com>,
        Ben Dooks <ben.dooks@...ethink.co.uk>,
        MSM <linux-arm-msm@...r.kernel.org>,
        "open list:DRM PANEL DRIVERS" <dri-devel@...ts.freedesktop.org>,
        freedreno <freedreno@...ts.freedesktop.org>,
        lkml <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] drivers: gpu: drm: Add MDP5 configuration for MSM8x36 and
 its derivatives, such as MSM8939.

On Fri, May 1, 2020 at 2:52 PM Konrad Dybcio <konradybcio@...il.com> wrote:
>
> Signed-off-by: Konrad Dybcio <konradybcio@...il.com>
> ---
>  drivers/gpu/drm/msm/disp/mdp5/mdp5_cfg.c | 70 ++++++++++++++++++++++++
>  1 file changed, 70 insertions(+)
>
> diff --git a/drivers/gpu/drm/msm/disp/mdp5/mdp5_cfg.c b/drivers/gpu/drm/msm/disp/mdp5/mdp5_cfg.c
> index e3c4c250238b7..1c7de7d6870cf 100644
> --- a/drivers/gpu/drm/msm/disp/mdp5/mdp5_cfg.c
> +++ b/drivers/gpu/drm/msm/disp/mdp5/mdp5_cfg.c
> @@ -342,6 +342,75 @@ static const struct mdp5_cfg_hw msm8x16_config = {
>         .max_clk = 320000000,
>  };
>
> +static const struct mdp5_cfg_hw msm8x36_config = {
> +       .name = "msm8x36",
> +       .mdp = {
> +               .count = 1,
> +               .base = { 0x0 },
> +               .caps = MDP_CAP_SMP |
> +                       0,

Is the "| 0" really adding value here?