From: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
To: Yongxing Mou <yongxing.mou@oss.qualcomm.com>,
Rob Clark <robin.clark@oss.qualcomm.com>,
Dmitry Baryshkov <lumag@kernel.org>,
Abhinav Kumar <abhinav.kumar@linux.dev>,
Jessica Zhang <jesszhan0024@gmail.com>,
Sean Paul <sean@poorly.run>,
Marijn Suijten <marijn.suijten@somainline.org>,
David Airlie <airlied@gmail.com>, Simona Vetter <simona@ffwll.ch>,
Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
Maxime Ripard <mripard@kernel.org>,
Thomas Zimmermann <tzimmermann@suse.de>,
Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
Krishna Manikandan <quic_mkrishn@quicinc.com>,
Abel Vesa <abelvesa@kernel.org>,
Yuanjie Yang <yuanjie.yang@oss.qualcomm.com>,
Bjorn Andersson <andersson@kernel.org>,
Konrad Dybcio <konradybcio@kernel.org>
Cc: linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org,
freedreno@lists.freedesktop.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/3] dt-bindings: display: msm: Allow two MDSS power domains
Date: Mon, 17 Aug 2026 16:13:36 +0200 [thread overview]
Message-ID: <5341e732-0deb-4d00-9a7c-595e317bf1e8@oss.qualcomm.com> (raw)
In-Reply-To: <ccab8aae-d980-423a-b39e-3ce2a7c82542@oss.qualcomm.com>
On 8/13/26 9:44 AM, Yongxing Mou wrote:
>
>
> On 7/20/2026 4:49 PM, Konrad Dybcio wrote:
>> On 7/20/26 10:43 AM, Yongxing Mou wrote:
>>> Kaanapali (SM8750) and Glymur use two display power domains.
>>> CORE_GDSC powers the main display hardware while INT2_GDSC
>>> powers a subset of SSPP blocks.
>>
>> Can they operate independently? Does INT2_GDSC need to be
>> powered on after CORE_GDSC?
>>
> On Kaanapali, my understanding is that CORE_GDSC and INT2_GDSC should generally track the same state, except that INT2_GDSC may be powered down when SSPP1 (VIG2/VIG3/DMA5) is unused.
Is the MDSS any useful if *only* INT2_GDSC is enabled? Can the INT2_GDSC
be enabled itself if CORE_GDSC is off?
Konrad
next prev parent reply other threads:[~2026-08-17 14:13 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-20 8:43 [PATCH 0/3] drm/msm: Enable dual MDSS power domains Yongxing Mou
2026-07-20 8:43 ` [PATCH 1/3] dt-bindings: display: msm: Allow two " Yongxing Mou
2026-07-20 8:49 ` Konrad Dybcio
2026-08-13 7:44 ` Yongxing Mou
2026-08-17 14:12 ` Konrad Dybcio
2026-08-18 3:32 ` Dmitry Baryshkov
2026-08-17 14:13 ` Konrad Dybcio [this message]
2026-08-17 14:14 ` Konrad Dybcio
2026-08-19 3:27 ` Yongxing Mou
2026-08-25 6:28 ` Yongxing Mou
2026-08-25 8:30 ` Konrad Dybcio
2026-08-26 2:53 ` Yongxing Mou
2026-08-26 13:19 ` Konrad Dybcio
2026-08-19 3:23 ` Yongxing Mou
2026-08-18 3:31 ` Dmitry Baryshkov
2026-08-19 5:50 ` Yongxing Mou
2026-07-20 8:54 ` sashiko-bot
2026-07-21 18:18 ` Dmitry Baryshkov
2026-08-13 7:45 ` Yongxing Mou
2026-07-21 18:20 ` Dmitry Baryshkov
2026-08-13 8:06 ` Yongxing Mou
2026-07-24 9:36 ` Krzysztof Kozlowski
2026-08-13 7:45 ` Yongxing Mou
2026-08-18 3:29 ` Dmitry Baryshkov
2026-07-20 8:43 ` [PATCH 2/3] drm/msm/mdss: Enable INT2_GDSC alongside CORE_GDSC Yongxing Mou
2026-07-20 8:58 ` sashiko-bot
2026-07-21 18:40 ` Dmitry Baryshkov
2026-08-13 7:45 ` Yongxing Mou
2026-07-20 8:43 ` [PATCH 3/3] arm64: dts: qcom: Add INT2_GDSC to MDSS on Kaanapali and Glymur Yongxing Mou
2026-07-20 9:05 ` sashiko-bot
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