From 65a07ef7cbe6a46fd0cd20825e5e30c95861ceaf Mon Sep 17 00:00:00 2001 From: Akhil P Oommen Date: Fri, 10 Apr 2026 02:38:51 +0530 Subject: [PATCH] FROMLIST: arm64: dts: qcom: purwa: Fix GPU IOMMU property Purwa's GPU does not support SID 1, which is typically used for LPAC-related traffic. Remove SID 1 from the GPU node's iommus property to accurately describe the hardware. This fixes the splat below, seen with some versions of Gunyah hypervisor: Internal error: synchronous external abort: 0000000096000010 [#1] SMP CPU: 0 UID: 0 PID: 80 Comm: kworker/u33:2 Tainted: G M Tainted: [M]=MACHINE_CHECK Hardware name: Qualcomm Technologies, Inc. Purwa IoT EVK (DT) Workqueue: events_unbound deferred_probe_work_func pstate: 21400005 (nzCv daif +PAN -UAO -TCO +DIT -SSBS BTYPE=--) pc : arm_smmu_write_s2cr+0x9c/0xbc lr : arm_smmu_master_install_s2crs+0x78/0xa4 sp : ffff80008039b570 x29: ffff80008039b570 x28: 0000000000000000 x27: ffffaddd62f1ab78 x26: ffff00080a4ff280 x25: 0000000000000018 x24: ffff00080b896480 x23: ffff00080ba9b7a0 x22: ffff00080bb05160 x21: 0000000000000000 x20: 0000000000000000 x19: 0000000000000001 x18: 00000000ffffffff x17: 0000000000000000 x16: 0000000000000000 x15: ffff80008039b1d0 x14: ffff80010039b37d x13: 00746c7561662d74 x12: 0000000000000000 x11: ffff00080b7fbd98 x10: ffffffffffffffc0 x9 : ffffffffffffffff x8 : 0000000000000228 x7 : 0000000000000e87 x6 : 0000000000000000 x5 : 0000000000000000 x4 : ffff00080a4ff280 x3 : 0000000000000000 x2 : ffff800082a40c04 x1 : 0000000000000000 x0 : ffff800082a40000 Call trace: arm_smmu_write_s2cr+0x9c/0xbc (P) arm_smmu_master_install_s2crs+0x78/0xa4 arm_smmu_attach_dev+0xb0/0x1d8 __iommu_device_set_domain+0x84/0x11c __iommu_group_set_domain_internal+0x60/0x120 __iommu_attach_group+0x88/0x9c iommu_attach_device+0x6c/0xa0 msm_iommu_new.part.0+0x84/0xe4 [msm] msm_iommu_gpu_new+0x3c/0x104 [msm] adreno_iommu_create_vm+0x24/0xc8 [msm] a6xx_create_vm+0x48/0x78 [msm] msm_gpu_init+0x2d8/0x508 [msm] adreno_gpu_init+0x208/0x324 [msm] a6xx_gpu_init+0x604/0x8cc [msm] adreno_bind+0xb4/0x124 [msm] component_bind_all+0x114/0x23c msm_drm_init+0x1b0/0x1ec [msm] msm_drm_bind+0x30/0x3c [msm] try_to_bring_up_aggregate_device+0x164/0x1d0 __component_add+0xa4/0x16c component_add+0x14/0x20 msm_dp_display_probe_tail+0x4c/0xac [msm] msm_dp_auxbus_done_probe+0x14/0x20 [msm] dp_aux_ep_probe+0x4c/0xf4 [drm_dp_aux_bus] really_probe+0xbc/0x29c __driver_probe_device+0x78/0x12c driver_probe_device+0x3c/0x15c __device_attach_driver+0xb8/0x134 bus_for_each_drv+0x88/0xe8 __device_attach+0xa0/0x190 device_initial_probe+0x50/0x54 bus_probe_device+0x38/0xa4 deferred_probe_work_func+0x88/0xc0 process_one_work+0x148/0x28c worker_thread+0x2cc/0x3d4 kthread+0x12c/0x204 ret_from_fork+0x10/0x20 ---[ end trace 0000000000000000 ]--- Fixes: 1aa0b4e36436 ("arm64: dts: qcom: x1p42100: Add GPU support") Signed-off-by: Akhil P Oommen Link: https://lore.kernel.org/r/20260410-purwa-gpu-dt-fix-v1-1-4637892156cf@oss.qualcomm.com --- arch/arm64/boot/dts/qcom/purwa.dtsi | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm64/boot/dts/qcom/purwa.dtsi b/arch/arm64/boot/dts/qcom/purwa.dtsi index 743eb12569f41..05e736a0f0935 100644 --- a/arch/arm64/boot/dts/qcom/purwa.dtsi +++ b/arch/arm64/boot/dts/qcom/purwa.dtsi @@ -55,6 +55,8 @@ &gpu { compatible = "qcom,adreno-43030c00", "qcom,adreno"; + iommus = <&adreno_smmu 0 0x0>; + nvmem-cells = <&gpu_speed_bin>; nvmem-cell-names = "speed_bin";