linux-kernel - Re: [PATCH 4/5] drm/msm/dpu: Add SA8775P support

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Message-ID: <CAA8EJpqTuj2j4mTKCTGpOX6ZfgGLocmDdwX1BwqEp6OkBejnDg@mail.gmail.com>
Date: Tue, 24 Sep 2024 14:36:35 +0200
From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To: Mahadevan P <quic_mahap@...cinc.com>
Cc: robdclark@...il.com, quic_abhinavk@...cinc.com, sean@...rly.run, 
	marijn.suijten@...ainline.org, airlied@...il.com, daniel@...ll.ch, 
	maarten.lankhorst@...ux.intel.com, mripard@...nel.org, tzimmermann@...e.de, 
	robh@...nel.org, krzk+dt@...nel.org, conor+dt@...nel.org, swboyd@...omium.org, 
	konrad.dybcio@...aro.org, danila@...xyga.com, bigfoot@...ssfun.cn, 
	neil.armstrong@...aro.org, mailingradian@...il.com, quic_jesszhan@...cinc.com, 
	andersson@...nel.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, 
	quic_kalyant@...cinc.com, quic_jmadiset@...cinc.com, 
	quic_vpolimer@...cinc.com
Subject: Re: [PATCH 4/5] drm/msm/dpu: Add SA8775P support

On Tue, 24 Sept 2024 at 14:31, Mahadevan P <quic_mahap@...cinc.com> wrote:
>
>
> On 9/24/2024 5:46 PM, Dmitry Baryshkov wrote:
> > On Tue, Sep 24, 2024 at 04:42:02PM GMT, Mahadevan P wrote:
> >> On 9/12/2024 1:34 PM, Dmitry Baryshkov wrote:
> >>> On Thu, Sep 12, 2024 at 12:44:36PM GMT, Mahadevan wrote:
> >>>> Add definitions for the display hardware used on the
> >>>> Qualcomm SA8775P platform.
> >>>>
> >>>> Signed-off-by: Mahadevan <quic_mahap@...cinc.com>
> >>>> ---
> >>>>    .../msm/disp/dpu1/catalog/dpu_8_4_sa8775p.h   | 485 ++++++++++++++++++
> >>>>    .../gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c    |   3 +-
> >>>>    .../gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h    |   3 +-
> >>>>    drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c       |   3 +-
> >>>>    4 files changed, 491 insertions(+), 3 deletions(-)
> >>>>    create mode 100644 drivers/gpu/drm/msm/disp/dpu1/catalog/dpu_8_4_sa8775p.h
> >>>>
> > [...]
> >
> >>>> +static const struct dpu_intf_cfg sa8775p_intf[] = {
> >>>> +  {
> >>>> +          .name = "intf_0", .id = INTF_0,
> >>>> +          .base = 0x34000, .len = 0x280,
> >>>> +          .features = INTF_SC7280_MASK,
> >>>> +          .type = INTF_DP,
> >>>> +          .controller_id = MSM_DP_CONTROLLER_0,
> >>>> +          .prog_fetch_lines_worst_case = 24,
> >>>> +          .intr_underrun = DPU_IRQ_IDX(MDP_SSPP_TOP0_INTR, 24),
> >>>> +          .intr_vsync = DPU_IRQ_IDX(MDP_SSPP_TOP0_INTR, 25),
> >>>> +  }, {
> >>>> +          .name = "intf_1", .id = INTF_1,
> >>>> +          .base = 0x35000, .len = 0x300,
> >>>> +          .features = INTF_SC7280_MASK,
> >>>> +          .type = INTF_DSI,
> >>>> +          .controller_id = MSM_DSI_CONTROLLER_0,
> >>>> +          .prog_fetch_lines_worst_case = 24,
> >>>> +          .intr_underrun = DPU_IRQ_IDX(MDP_SSPP_TOP0_INTR, 26),
> >>>> +          .intr_vsync = DPU_IRQ_IDX(MDP_SSPP_TOP0_INTR, 27),
> >>>> +          .intr_tear_rd_ptr = DPU_IRQ_IDX(MDP_INTF1_TEAR_INTR, 2),
> >>>> +  }, {
> >>>> +          .name = "intf_2", .id = INTF_2,
> >>>> +          .base = 0x36000, .len = 0x300,
> >>>> +          .features = INTF_SC7280_MASK,
> >>>> +          .type = INTF_DSI,
> >>>> +          .controller_id = MSM_DSI_CONTROLLER_1,
> >>>> +          .prog_fetch_lines_worst_case = 24,
> >>>> +          .intr_underrun = DPU_IRQ_IDX(MDP_SSPP_TOP0_INTR, 28),
> >>>> +          .intr_vsync = DPU_IRQ_IDX(MDP_SSPP_TOP0_INTR, 29),
> >>>> +          .intr_tear_rd_ptr = DPU_IRQ_IDX(MDP_INTF2_TEAR_INTR, 2),
> >>>> +  }, {
> >>>> +          .name = "intf_3", .id = INTF_3,
> >>>> +          .base = 0x37000, .len = 0x280,
> >>>> +          .features = INTF_SC7280_MASK,
> >>>> +          .type = INTF_NONE,
> >>>> +          .controller_id = MSM_DP_CONTROLLER_0,   /* pair with intf_0 for DP MST */
> >>>> +          .prog_fetch_lines_worst_case = 24,
> >>>> +          .intr_underrun = DPU_IRQ_IDX(MDP_SSPP_TOP0_INTR, 30),
> >>>> +          .intr_vsync = DPU_IRQ_IDX(MDP_SSPP_TOP0_INTR, 31),
> >>>> +  }, {
> >>>> +          .name = "intf_4", .id = INTF_4,
> >>>> +          .base = 0x38000, .len = 0x280,
> >>>> +          .features = INTF_SC7280_MASK,
> >>>> +          .type = INTF_DP,
> >>>> +          .controller_id = MSM_DP_CONTROLLER_1,
> >>>> +          .prog_fetch_lines_worst_case = 24,
> >>>> +          .intr_underrun = DPU_IRQ_IDX(MDP_SSPP_TOP0_INTR, 20),
> >>>> +          .intr_vsync = DPU_IRQ_IDX(MDP_SSPP_TOP0_INTR, 21),
> >>>> +  }, {
> >>> Where is intf_5 ?
> >>
> >> intf_5 of base address 0x39000 is not supported on this target.
> > Not supported by whom?
>
>
> In sa8775p mdss architecture intf_5 is not present. So we are not adding
> in SW too.

ack, thanks for the explanation. It's better now.

-- 
With best wishes
Dmitry