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From: Anna Maniscalco <anna.maniscalco2000@gmail.com>
To: Rob Clark <robin.clark@oss.qualcomm.com>,
	Will Deacon <will@kernel.org>,
	 Robin Murphy <robin.murphy@arm.com>,
	Joerg Roedel <joro@8bytes.org>,  Sean Paul <sean@poorly.run>,
	Konrad Dybcio <konradybcio@kernel.org>,
	 Akhil P Oommen <akhilpo@oss.qualcomm.com>,
	 Dmitry Baryshkov <lumag@kernel.org>,
	 Abhinav Kumar <abhinav.kumar@linux.dev>,
	 Jessica Zhang <jesszhan0024@gmail.com>,
	 Marijn Suijten <marijn.suijten@somainline.org>,
	 David Airlie <airlied@gmail.com>,
	Simona Vetter <simona@ffwll.ch>,
	 Bjorn Andersson <andersson@kernel.org>,
	Rob Herring <robh@kernel.org>,
	 Krzysztof Kozlowski <krzk+dt@kernel.org>,
	 Conor Dooley <conor+dt@kernel.org>,
	 Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
	 Maxime Ripard <mripard@kernel.org>,
	Thomas Zimmermann <tzimmermann@suse.de>
Cc: iommu@lists.linux.dev, linux-arm-msm@vger.kernel.org,
	 linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org,  dri-devel@lists.freedesktop.org,
	freedreno@lists.freedesktop.org,  devicetree@vger.kernel.org,
	Anna Maniscalco <anna.maniscalco2000@gmail.com>
Subject: [PATCH RFC 04/13] arm64: dts: qcom: sm8650: move smmu sid 1 to new lpac device
Date: Sun, 05 Jul 2026 21:13:38 +0200	[thread overview]
Message-ID: <20260705-descriptive-name-lpac-upstream-v1-4-01d50c3e0c99@gmail.com> (raw)
In-Reply-To: <20260705-descriptive-name-lpac-upstream-v1-0-01d50c3e0c99@gmail.com>

Previously both SID 0 and 1 where associated with the same domain.

When LPAC is not used this is needed so firmware can acces memory when
initializing using the same page table as GFX.

To use LPAC however we need to move SID 1 to a different device.

Signed-off-by: Anna Maniscalco <anna.maniscalco2000@gmail.com>
---
 arch/arm64/boot/dts/qcom/sm8650.dtsi | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/qcom/sm8650.dtsi b/arch/arm64/boot/dts/qcom/sm8650.dtsi
index 1604bc8cff37..44e5f9d4b335 100644
--- a/arch/arm64/boot/dts/qcom/sm8650.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm8650.dtsi
@@ -4133,6 +4133,13 @@ tcsr: clock-controller@1fc0000 {
 			#reset-cells = <1>;
 		};
 
+		lpac: lpac@3d00000 {
+			compatible = "qcom,lpac";
+			reg = <0x0 0x03d00000 0x0 0x61000>;
+
+			iommus = <&adreno_smmu 1 0x0>;
+		};
+
 		gpu: gpu@3d00000 {
 			compatible = "qcom,adreno-43051401", "qcom,adreno";
 			reg = <0x0 0x03d00000 0x0 0x40000>,
@@ -4144,8 +4151,9 @@ gpu: gpu@3d00000 {
 
 			interrupts = <GIC_SPI 300 IRQ_TYPE_LEVEL_HIGH 0>;
 
-			iommus = <&adreno_smmu 0 0x0>,
-				 <&adreno_smmu 1 0x0>;
+			iommus = <&adreno_smmu 0 0x0>;
+
+			qcom,lpac= <&lpac>;
 
 			operating-points-v2 = <&gpu_opp_table>;
 

-- 
2.54.0



  parent reply	other threads:[~2026-07-05 19:14 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-07-05 19:13 [RFC PATCH 00/13] Enable LPAC on a7xx series GPUs Anna Maniscalco
2026-07-05 19:13 ` [PATCH RFC 01/13] iommu: arm-smmu-qcom: Configure lpac device with split address space Anna Maniscalco
2026-07-06 15:00   ` Dmitry Baryshkov
2026-07-07 15:04     ` Anna Maniscalco
2026-07-05 19:13 ` [PATCH RFC 02/13] drm/msm: add support for lpac_domain in msm_mmu Anna Maniscalco
2026-07-05 19:13 ` [PATCH RFC 03/13] drm/msm: look for lpac from dts Anna Maniscalco
2026-07-06 15:04   ` Dmitry Baryshkov
2026-07-07 15:02     ` Anna Maniscalco
2026-07-07 16:39       ` Dmitry Baryshkov
2026-07-05 19:13 ` Anna Maniscalco [this message]
2026-07-06  8:40   ` [PATCH RFC 04/13] arm64: dts: qcom: sm8650: move smmu sid 1 to new lpac device Konrad Dybcio
2026-07-05 19:13 ` [PATCH RFC 05/13] firmware: qcom: scm: Configure LPAC aperture Anna Maniscalco
2026-07-05 19:13 ` [PATCH RFC 06/13] DEBUGGING: print contextbank and other ttbrs on fault Anna Maniscalco
2026-07-05 19:13 ` [PATCH RFC 07/13] iommu: arm-smmu-qcom: Fixed mapping between sid and cb for gpu and lpac Anna Maniscalco
2026-07-05 19:13 ` [PATCH RFC 08/13] HACK: use cb1 address in lpac dtb node Anna Maniscalco
2026-07-05 19:13 ` [PATCH RFC 09/13] temp: add LPAC regs Anna Maniscalco
2026-07-05 19:13 ` [PATCH RFC 10/13] drm/msm: initialize LPAC ring Anna Maniscalco
2026-07-06  8:44   ` Konrad Dybcio
2026-07-06 11:07     ` Anna Maniscalco
2026-07-06 11:09       ` Konrad Dybcio
2026-07-06 21:56       ` Akhil P Oommen
2026-07-06 22:13         ` Anna Maniscalco
2026-07-05 19:13 ` [PATCH RFC 11/13] drm/msm: Add LPAC submitqueue Anna Maniscalco
2026-07-05 19:13 ` [PATCH RFC 12/13] drm/msm: set ctxbank and asid based on ring Anna Maniscalco
2026-07-05 19:13 ` [PATCH RFC 13/13] drm/msm: add lpac ring to devcoredump Anna Maniscalco
2026-07-06 14:57 ` [RFC PATCH 00/13] Enable LPAC on a7xx series GPUs Dmitry Baryshkov
2026-07-06 22:00   ` Akhil P Oommen

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