From: Stephen Boyd <swboyd@chromium.org>
To: Sankeerth Billakanti <sbillaka@codeaurora.org>,
dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org,
linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: robdclark@gmail.com, seanpaul@chromium.org,
kalyan_t@codeaurora.org, abhinavk@codeaurora.org,
dianders@chromium.org, khsieh@codeaurora.org,
mkrishn@codeaurora.org
Subject: Re: [PATCH v1 1/2] drm/msm/dp: Add support for SC7280 eDP
Date: Mon, 13 Sep 2021 20:53:32 -0700 [thread overview]
Message-ID: <CAE-0n51EiVHB56AC5tdyRtkpy0B9OuOp_y5xBceaU_pyzr+_JA@mail.gmail.com> (raw)
In-Reply-To: <1628726882-27841-2-git-send-email-sbillaka@codeaurora.org>
Quoting Sankeerth Billakanti (2021-08-11 17:08:01)
> The eDP controller on SC7280 is similar to the eDP/DP controllers
> supported by the current driver implementation.
>
> SC7280 supports one EDP and one DP controller which can operate
> concurrently.
>
> The following are some required changes for the sc7280 sink:
> 1. Additional gpio configuration for backlight and pwm via pmic.
> 2. ASSR support programming on the sink.
> 3. SSC support programming on the sink.
>
> Signed-off-by: Sankeerth Billakanti <sbillaka@codeaurora.org>
> ---
> drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c | 4 ++--
> drivers/gpu/drm/msm/dp/dp_ctrl.c | 19 +++++++++++++++
> drivers/gpu/drm/msm/dp/dp_display.c | 32 ++++++++++++++++++++++++--
> drivers/gpu/drm/msm/dp/dp_parser.c | 31 +++++++++++++++++++++++++
> drivers/gpu/drm/msm/dp/dp_parser.h | 5 ++++
> 5 files changed, 87 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c
> index b131fd37..1096c44 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c
> @@ -856,9 +856,9 @@ static const struct dpu_intf_cfg sm8150_intf[] = {
> };
>
> static const struct dpu_intf_cfg sc7280_intf[] = {
> - INTF_BLK("intf_0", INTF_0, 0x34000, INTF_DP, 0, 24, INTF_SC7280_MASK, MDP_SSPP_TOP0_INTR, 24, 25),
> + INTF_BLK("intf_0", INTF_0, 0x34000, INTF_DP, 1, 24, INTF_SC7280_MASK, MDP_SSPP_TOP0_INTR, 24, 25),
> INTF_BLK("intf_1", INTF_1, 0x35000, INTF_DSI, 0, 24, INTF_SC7280_MASK, MDP_SSPP_TOP0_INTR, 26, 27),
> - INTF_BLK("intf_5", INTF_5, 0x39000, INTF_EDP, 0, 24, INTF_SC7280_MASK, MDP_SSPP_TOP0_INTR, 22, 23),
> + INTF_BLK("intf_5", INTF_5, 0x39000, INTF_DP, 0, 24, INTF_SC7280_MASK, MDP_SSPP_TOP0_INTR, 22, 23),
Why is this INTF_5? Instead of INTF_2? I noticed that if I changed it to
INTF_2 that I could get external DP to work but not the internal eDP.
Then changing it back to INTF_5 got eDP interface working but not DP. I
also noticed that we changed it from INTF_EDP to INTF_DP for the eDP
hardware. Can you please explain this struct? I looked at it and I still
don't understand what's going on.
The index (fifth element above) seems to need to match the index that is
set for the address in sc7280_edp_cfg[]. If the two don't match things
don't seem to work either. But then I also tried flipping that and still
things didn't work. Does that index matter? Or can the first INTF_DP be
0 still?
next prev parent reply other threads:[~2021-09-14 3:53 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-12 0:08 [PATCH v1 0/2] Add support for eDP on SC7280 Sankeerth Billakanti
2021-08-12 0:08 ` [PATCH v1 1/2] drm/msm/dp: Add support for SC7280 eDP Sankeerth Billakanti
2021-08-12 0:41 ` Stephen Boyd
2021-08-13 0:28 ` sbillaka
2021-08-25 23:11 ` Bjorn Andersson
2021-08-16 17:51 ` Matthias Kaehlcke
2021-09-14 3:53 ` Stephen Boyd [this message]
2021-08-12 0:08 ` [PATCH v1 2/2] dt-bindings: Add SC7280 compatible string Sankeerth Billakanti
2021-08-12 0:31 ` Stephen Boyd
2021-08-16 18:01 ` Matthias Kaehlcke
2021-08-24 23:07 ` Doug Anderson
2021-08-25 17:50 ` Stephen Boyd
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