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CORE_GDSC powers the main display hardware while INT2_GDSC powers a subset of SSPP blocks. Allow the MDSS bindings to describe both power domains and their corresponding power-domain-names values. Signed-off-by: Yongxing Mou --- .../devicetree/bindings/display/msm/mdss-common.yaml | 3 ++- .../devicetree/bindings/display/msm/qcom,glymur-mdss.yaml | 13 +++++++++= +++- .../bindings/display/msm/qcom,kaanapali-mdss.yaml | 13 +++++++++= +++- 3 files changed, 26 insertions(+), 3 deletions(-) diff --git a/Documentation/devicetree/bindings/display/msm/mdss-common.yaml= b/Documentation/devicetree/bindings/display/msm/mdss-common.yaml index c6305a6e0334..c0b650ffd9ef 100644 --- a/Documentation/devicetree/bindings/display/msm/mdss-common.yaml +++ b/Documentation/devicetree/bindings/display/msm/mdss-common.yaml @@ -31,7 +31,8 @@ properties: const: mdss =20 power-domains: - maxItems: 1 + minItems: 1 + maxItems: 2 =20 clocks: minItems: 2 diff --git a/Documentation/devicetree/bindings/display/msm/qcom,glymur-mdss= .yaml b/Documentation/devicetree/bindings/display/msm/qcom,glymur-mdss.yaml index 64dde43373ac..685bedb26a12 100644 --- a/Documentation/devicetree/bindings/display/msm/qcom,glymur-mdss.yaml +++ b/Documentation/devicetree/bindings/display/msm/qcom,glymur-mdss.yaml @@ -38,6 +38,16 @@ properties: - const: mdp0-mem - const: cpu-cfg =20 + power-domains: + items: + - description: MDSS core GDSC power domain + - description: MDSS INT2 GDSC power domain + + power-domain-names: + items: + - const: core + - const: int2 + patternProperties: "^display-controller@[0-9a-f]+$": type: object @@ -95,7 +105,8 @@ examples: =20 resets =3D <&disp_cc_mdss_core_bcr>; =20 - power-domains =3D <&mdss_gdsc>; + power-domains =3D <&mdss_gdsc>, <&mdss_int2_gdsc>; + power-domain-names =3D "core", "int2"; =20 iommus =3D <&apps_smmu 0x1c00 0x2>; =20 diff --git a/Documentation/devicetree/bindings/display/msm/qcom,kaanapali-m= dss.yaml b/Documentation/devicetree/bindings/display/msm/qcom,kaanapali-mds= s.yaml index 9f935defd6b1..088010f464c3 100644 --- a/Documentation/devicetree/bindings/display/msm/qcom,kaanapali-mdss.yaml +++ b/Documentation/devicetree/bindings/display/msm/qcom,kaanapali-mdss.yaml @@ -40,6 +40,16 @@ properties: - const: mdp0-mem - const: cpu-cfg =20 + power-domains: + items: + - description: MDSS core GDSC power domain + - description: MDSS INT2 GDSC power domain + + power-domain-names: + items: + - const: core + - const: int2 + patternProperties: "^display-controller@[0-9a-f]+$": type: object @@ -89,7 +99,8 @@ examples: <&disp_cc_mdss_ahb_swi_clk>; resets =3D <&disp_cc_mdss_core_bcr>; =20 - power-domains =3D <&mdss_gdsc>; + power-domains =3D <&mdss_gdsc>, <&mdss_int2_gdsc>; 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CORE_GDSC powers the main display hardware while INT2_GDSC powers a subset of SSPP blocks (VIG2/VIG3/DMA5/DMA6). The MDSS driver currently relies on the default runtime PM handling and does not enable the secondary INT2_GDSC. As a result, display pipes backed by INT2_GDSC remain inaccessible. Attach and manage both power domains explicitly and enable them during MDSS runtime PM activation. Signed-off-by: Yongxing Mou --- drivers/gpu/drm/msm/msm_mdss.c | 53 ++++++++++++++++++++++++++++++++++++++= +++- 1 file changed, 52 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/msm/msm_mdss.c b/drivers/gpu/drm/msm/msm_mdss.c index 9087c4b290db..63ece55c4f2e 100644 --- a/drivers/gpu/drm/msm/msm_mdss.c +++ b/drivers/gpu/drm/msm/msm_mdss.c @@ -13,6 +13,7 @@ #include #include #include +#include #include #include =20 @@ -44,6 +45,7 @@ struct msm_mdss { struct icc_path *mdp_path[2]; u32 num_mdp_paths; struct icc_path *reg_bus_path; + struct dev_pm_domain_list *pd_list; }; =20 static int msm_mdss_parse_data_bus_icc_path(struct device *dev, @@ -233,6 +235,21 @@ static int msm_mdss_enable(struct msm_mdss *msm_mdss) int ret, i; u32 hw_rev; =20 + /* + * Platforms with two power domains (e.g. Kaanapali, Glymur) need both + * GDSCs enabled explicitly; the core framework only auto-attaches a + * single power domain. + */ + if (msm_mdss->pd_list) { + ret =3D pm_runtime_resume_and_get(msm_mdss->pd_list->pd_devs[0]); + if (ret < 0) + return ret; + + ret =3D pm_runtime_resume_and_get(msm_mdss->pd_list->pd_devs[1]); + if (ret < 0) + goto err_put_core; + } + /* * Several components have AXI clocks that can only be turned on if * the interconnect is enabled (non-zero bandwidth). Let's make sure @@ -255,7 +272,7 @@ static int msm_mdss_enable(struct msm_mdss *msm_mdss) ret =3D clk_bulk_prepare_enable(msm_mdss->num_clocks, msm_mdss->clocks); if (ret) { dev_err(msm_mdss->dev, "clock enable failed, ret:%d\n", ret); - return ret; + goto err_put_int2; } =20 /* @@ -276,6 +293,14 @@ static int msm_mdss_enable(struct msm_mdss *msm_mdss) /* else UBWC 1.0 or none, no params to program */ =20 return ret; + +err_put_int2: + if (msm_mdss->pd_list) + pm_runtime_put_sync(msm_mdss->pd_list->pd_devs[1]); +err_put_core: + if (msm_mdss->pd_list) + pm_runtime_put_sync(msm_mdss->pd_list->pd_devs[0]); + return ret; } =20 static int msm_mdss_disable(struct msm_mdss *msm_mdss) @@ -290,6 +315,11 @@ static int msm_mdss_disable(struct msm_mdss *msm_mdss) if (msm_mdss->reg_bus_path) icc_set_bw(msm_mdss->reg_bus_path, 0, 0); =20 + if (msm_mdss->pd_list) { + pm_runtime_put_sync(msm_mdss->pd_list->pd_devs[1]); + pm_runtime_put_sync(msm_mdss->pd_list->pd_devs[0]); + } + return 0; } =20 @@ -421,6 +451,27 @@ static struct msm_mdss *msm_mdss_init(struct platform_= device *pdev, bool is_mdp5 irq_set_chained_handler_and_data(irq, msm_mdss_irq, msm_mdss); =20 + /* + * When two power domains are listed in DT, the core framework does not + * auto-attach either of them. 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[129.46.232.65]) by smtp.gmail.com with ESMTPSA id 6a1803df08f44-9077871f650sm87061716d6.45.2026.07.20.01.44.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 20 Jul 2026 01:44:30 -0700 (PDT) From: Yongxing Mou Date: Mon, 20 Jul 2026 16:43:55 +0800 Subject: [PATCH 3/3] arm64: dts: qcom: Add INT2_GDSC to MDSS on Kaanapali and Glymur Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260720-msm_gdsc2-v1-3-4687866d6cb0@oss.qualcomm.com> References: <20260720-msm_gdsc2-v1-0-4687866d6cb0@oss.qualcomm.com> In-Reply-To: <20260720-msm_gdsc2-v1-0-4687866d6cb0@oss.qualcomm.com> To: Rob Clark , Dmitry Baryshkov , Abhinav Kumar , Jessica Zhang , Sean Paul , Marijn Suijten , David Airlie , Simona Vetter , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Krishna Manikandan , Abel Vesa , Yuanjie Yang , Bjorn Andersson , Konrad Dybcio 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, Yongxing Mou X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=ed25519-sha256; t=1784537040; l=1802; i=yongxing.mou@oss.qualcomm.com; s=20250910; h=from:subject:message-id; bh=CkRJFqt/VW4m5qRKt2q/9AJRY0uceEXzVx2depa2iLY=; b=eO1BQJDBvohcpLmoA6yL3Gujad6n9t74NuTPvHvef9LaH2vI8y8J2BlCtKOHVgqLCUIXL+afi Q4EaqItvlTbCCPXaBrGHnoOCal7EAG48XFCNy2Z2xbcjdSsLTrvOIuN X-Developer-Key: i=yongxing.mou@oss.qualcomm.com; a=ed25519; pk=rAy5J1eP+V7OXqH5FJ7ngMCtUrnHhut30ZTldOj52UM= X-Authority-Analysis: v=2.4 cv=Le0MLDfi c=1 sm=1 tr=0 ts=6a5ddff0 cx=c_pps a=oc9J++0uMp73DTRD5QyR2A==:117 a=C3Dk8TwHQYyIj7nOf9RCJw==:17 a=IkcTkHD0fZMA:10 a=RAioF0-LDSMA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=DJpcGTmdVt4CTyJn9g5Z:22 a=EUspDBNiAAAA:8 a=BnhMQQodrXrB4p16wh8A:9 a=QEXdDO2ut3YA:10 a=iYH6xdkBrDN1Jqds4HTS:22 X-Proofpoint-GUID: NmtM5Sf6LRQZKInTxfurlHBSFJ98x4R_ X-Proofpoint-ORIG-GUID: NmtM5Sf6LRQZKInTxfurlHBSFJ98x4R_ X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNzIwMDA5NiBTYWx0ZWRfX2VwzYtlwHSuK x4J7wdeaBxZarouohKxSRADxPfF/uLso5KRM59m/7hORvNIoFebHszOFUmrwYBWecsRYPjPzDf5 K0hXvu5WeTQQKvd71/3ikyGF6dWNWTWA7+4L7E0NzOKWPm/athItqfAf5g9IdWaV74u09Vp9XfE gMIbnuldZNY9C+PBq6hAUIe3e+/7tqZ457RBpxzK+qohPsToGdapnZjhTc17HmVZcBQ7u/VVRS2 bqahF4UqyArBDZxb9Xy8Ui+7+uQ9uKHpxS+Qsl+uZCajRjWj2Vay5Wo6vDfhez1fh2J3+G+umms FhMrjqACCpvUI2DnQtA04vqi7VJbOglRDP5Wne3RXcZmnH5jmTVSNXPQk8m4tTZreZqE5OTNybh bgWyx7UoyeyoVmr4pcyYEGxWdIIRRoW7cH01OBJC9K8BNapInwvjIk0qOqr9VlGRT/PokkShgZ1 R/2s3N3VTDagF8dfd+w== X-Proofpoint-Spam-Info: AW1haW4tMjYwNzIwMDA5NiBTYWx0ZWRfXxkH3LbrtZJ+T jrtbea4Nsz9ERK5P3VATz+gjrwNnhpKWPPWhU2yv5k+AunnYkaMRUu/0vchAZRwQWTqHrp0q3AF is3H2PDLM5zjYBeWYVaqW+303id5D10= X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-07-20_01,2026-07-17_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 lowpriorityscore=0 clxscore=1015 adultscore=0 phishscore=0 bulkscore=0 impostorscore=0 priorityscore=1501 malwarescore=0 spamscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2607200096 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 (VIG2/VIG3/DMA5/DMA6). Add DISP_CC_MDSS_CORE_INT2_GDSC alongside the existing CORE_GDSC reference in the MDSS node on both platforms and provide matching power-domain-names entries for the display power domains. Signed-off-by: Yongxing Mou --- arch/arm64/boot/dts/qcom/glymur.dtsi | 4 +++- arch/arm64/boot/dts/qcom/kaanapali.dtsi | 4 +++- 2 files changed, 6 insertions(+), 2 deletions(-) diff --git a/arch/arm64/boot/dts/qcom/glymur.dtsi b/arch/arm64/boot/dts/qco= m/glymur.dtsi index dd80da14ab10..1e447c1d69f7 100644 --- a/arch/arm64/boot/dts/qcom/glymur.dtsi +++ b/arch/arm64/boot/dts/qcom/glymur.dtsi @@ -4898,7 +4898,9 @@ &mc_virt SLAVE_EBI1 QCOM_ICC_TAG_ALWAYS>, interconnect-names =3D "mdp0-mem", "cpu-cfg"; =20 - power-domains =3D <&dispcc DISP_CC_MDSS_CORE_GDSC>; + power-domains =3D <&dispcc DISP_CC_MDSS_CORE_GDSC>, + <&dispcc DISP_CC_MDSS_CORE_INT2_GDSC>; + power-domain-names =3D "core", "int2"; =20 iommus =3D <&apps_smmu 0x1de0 0x2>; =20 diff --git a/arch/arm64/boot/dts/qcom/kaanapali.dtsi b/arch/arm64/boot/dts/= qcom/kaanapali.dtsi index ace19b8b12d7..ae851adec5a6 100644 --- a/arch/arm64/boot/dts/qcom/kaanapali.dtsi +++ b/arch/arm64/boot/dts/qcom/kaanapali.dtsi @@ -3581,7 +3581,9 @@ &mc_virt SLAVE_EBI1 QCOM_ICC_TAG_ALWAYS>, interconnect-names =3D "mdp0-mem", "cpu-cfg"; =20 - power-domains =3D <&dispcc DISP_CC_MDSS_CORE_GDSC>; + power-domains =3D <&dispcc DISP_CC_MDSS_CORE_GDSC>, + <&dispcc DISP_CC_MDSS_CORE_INT2_GDSC>; + power-domain-names =3D "core", "int2"; =20 iommus =3D <&apps_smmu 0x800 0x2>; =20 --=20 2.43.0