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80cd79aecb
This will cause iommu fault as bellow: Temporarily disable it before we have better solution. [ 10.015974] drm_mode_atomic_ioctl [ 10.016027] drm_atomic_set_property 0xcccccccc MODE_ID [ 10.016081] drm_atomic_set_property 0xcccccccc ACTIVE [ 10.016115] drm_atomic_set_property 0xcccccccc MODE_ID [ 10.016157] drm_atomic_set_property 0xcccccccc ACTIVE [ 10.016187] drm_atomic_set_property 0xcccccccc MODE_ID [ 10.016295] drm_atomic_set_property 0xcccccccc ACTIVE [ 10.016337] drm_atomic_set_property 0xc0c0c0c0 CRTC_ID [ 10.016390] drm_atomic_set_property 0xc0c0c0c0 CRTC_ID [ 10.016507] drm_atomic_helper_check [ 10.016716] vop2_plane_atomic_update Esmart1-win0 [ 10.016781] vop2_crtc_atomic_flush iommu_enabled 1 iommu_needed :1 [ 10.032142] rockchip_atomic_commit_complete [ 10.032205] drm_atomic_helper_cleanup_planes [ 10.032310] vop2_plane_cleanup_fb [ 10.032405] vop2_atomic_plane_destroy_state [ 10.032424] rockchip_gem_free_object [ 10.048738] rk_iommu fe043e00.iommu: Page fault at 0x0000000000030000 of type read [ 10.048791] rk_iommu fe043e00.iommu: iova = 0x0000000000030000: dte_index: 0x0 pte_index: 0x30 page_offset: 0x0 [ 10.048812] rk_iommu fe043e00.iommu: mmu_dte_addr: 0x000000007abd7000 dte@0x000000007abd7000: 0x7a01d001 valid: 1 pte@0x000000007 a01d0c0: 0x7a629006 valid: 0 page@0x0000000000000000 flags: 0x0 [ 10.048870] [drm:rockchip_drm_fault_handler] *ERROR* iommu fault handler flags: 0x28b [ 10.048902] Video Port0: DISABLED [ 10.048927] [ 10.048927] 0x00000000: [ 10.048931] 00008000 [ 10.048956] 40158023 [ 10.048981] 80000000 [ 10.049008] 00000000 [ 10.049034] [ 10.049034] 0x00000010: [ 10.049043] 00000ac0 [ 10.049055] 00000000 [ 10.049063] 00000000 [ 10.049089] 00000000 [ 10.049100] [ 10.049100] 0x00000020: [ 10.049122] 00000000 [ 10.049147] e0000010 [ 10.049172] 00010010 [ 10.049196] 00000000 Change-Id: Id63a2f558f4ec096b405fad2f426dc525edc68b4 Signed-off-by: Andy Yan <andy.yan@rock-chips.com>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.