MediaTek IOMMU block diagram always like below: M4U | smi-common | ------------- | | ... | | larb1 larb2 | | vdec venc All the consumer connect with smi-larb, then connect with smi-common. MediaTek IOMMU don't have its power-domain. When the consumer works, it should enable the smi-larb's power which also need enable the smi-common's power firstly. Thus, Firstly, use the device link connect the consumer and the smi-larbs. then add device link between the smi-larb and smi-common. After adding the device_link, then "mediatek,larb" property can be removed. the iommu consumer don't need call the mtk_smi_larb_get/put to enable the power and clock of smi-larb and smi-common. This patchset depends on v5.7-rc1 and several patchset. Mainly venc and MDP adjust their flow, then this patchset can work successfully. a) IOMMU depend on [1][2]. b) MDP depend on [3][4][5]. c) VENC depend on [6]. [1] iommu: Move iommu_group setup to IOMMU core code https://lore.kernel.org/linux-iommu/20200429133712.31431-1-joro@xxxxxxxxxx/ [2] iommu/mediatek-v1: Fix a build warning for a unused variable 'data' https://lore.kernel.org/linux-iommu/1589875064-662-1-git-send-email-yong.wu@xxxxxxxxxxxx/ [3] arm64: dts: mt8173: fix mdp aliases property name https://lore.kernel.org/linux-mediatek/20200414030815.192104-1-hsinyi@xxxxxxxxxxxx/ [4] MTK MDP driver cleanups to prep for futher work https://lore.kernel.org/linux-mediatek/20200507102345.81849-1-eizan@xxxxxxxxxxxx/ [5] Refactor MDP driver and add dummy component driver https://lore.kernel.org/linux-mediatek/20200506084039.249977-1-eizan@xxxxxxxxxxxx/ [6] media: mtk-vcodec: venc: support for MT8183 https://lore.kernel.org/linux-mediatek/20200520082723.96136-1-acourbot@xxxxxxxxxxxx/ [1][2][3] have already been in lastest linux-next. Change notes: v4: base on v5.7-rc1. 1) Move drm PM patch before smi patchs. 2) Change builtin_platform_driver to module_platform_driver since we may need build as module. 3) Rebase many patchset as above. v3: https://lore.kernel.org/linux-iommu/1567503456-24725-1-git-send-email-yong.wu@xxxxxxxxxxxx/ 1) rebase on v5.3-rc1 and the latest mt8183 patchset. 2) Use device_is_bound to check whether the driver is ready from Matthias. 3) Add DL_FLAG_STATELESS flag when calling device_link_add and explain the reason in the commit message[3/14]. 4) Add a display patch[12/14] into this series. otherwise it may affect display HW fastlogo even though it don't happen in mt8183. v2: http://lists.infradead.org/pipermail/linux-mediatek/2019-June/020440.html 1) rebase on v5.2-rc1. 2) Move adding device_link between the consumer and smi-larb into iommu_add_device from Robin. 3) add DL_FLAG_AUTOREMOVE_CONSUMER even though the smi is built-in from Evan. 4) Remove the shutdown callback in iommu. v1: https://lists.linuxfoundation.org/pipermail/iommu/2019-January/032387.html Irui Wang (1): arm64: dts: mt8173: Separate mtk-vcodec-enc node Maoguang Meng (2): media: dt-binding: mtk-vcodec: Separating mtk-vcodec encode node. media: mtk-vcodec: separate mtk-vcodec-enc node. Yong Wu (13): dt-binding: mediatek: Get rid of mediatek,larb for multimedia HW iommu/mediatek: Add probe_defer for smi-larb iommu/mediatek: Add device_link between the consumer and the larb devices memory: mtk-smi: Add device-link between smi-larb and smi-common media: mtk-jpeg: Get rid of mtk_smi_larb_get/put media: mtk-mdp: Get rid of mtk_smi_larb_get/put media: mtk-vcodec: Get rid of mtk_smi_larb_get/put drm/mediatek: Get rid of mtk_smi_larb_get/put memory: mtk-smi: Get rid of mtk_smi_larb_get/put iommu/mediatek: Use module_platform_driver memory: mtk-smi: Use device_is_bound to check if smi-common is ready arm: dts: mediatek: Get rid of mediatek,larb for MM nodes arm64: dts: mediatek: Get rid of mediatek,larb for MM nodes Yongqiang Niu (1): drm/mediatek: Add pm runtime support for ovl and rdma .../bindings/display/mediatek/mediatek,disp.txt | 9 -- .../bindings/media/mediatek-jpeg-decoder.txt | 4 - .../devicetree/bindings/media/mediatek-mdp.txt | 8 -- .../devicetree/bindings/media/mediatek-vcodec.txt | 58 +++++----- arch/arm/boot/dts/mt2701.dtsi | 1 - arch/arm/boot/dts/mt7623.dtsi | 1 - arch/arm64/boot/dts/mediatek/mt8173.dtsi | 72 +++++------- drivers/gpu/drm/mediatek/mtk_disp_ovl.c | 9 +- drivers/gpu/drm/mediatek/mtk_disp_rdma.c | 9 +- drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 19 +-- drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c | 21 +--- drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h | 2 +- drivers/iommu/mtk_iommu.c | 44 ++++--- drivers/iommu/mtk_iommu_v1.c | 39 +++++-- drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c | 22 ---- drivers/media/platform/mtk-jpeg/mtk_jpeg_core.h | 2 - drivers/media/platform/mtk-mdp/mtk_mdp_comp.c | 44 +------ drivers/media/platform/mtk-mdp/mtk_mdp_comp.h | 2 - drivers/media/platform/mtk-mdp/mtk_mdp_core.c | 1 - .../media/platform/mtk-vcodec/mtk_vcodec_dec_pm.c | 19 --- drivers/media/platform/mtk-vcodec/mtk_vcodec_drv.h | 13 +-- drivers/media/platform/mtk-vcodec/mtk_vcodec_enc.c | 24 +++- .../media/platform/mtk-vcodec/mtk_vcodec_enc_drv.c | 127 +++++++++------------ .../media/platform/mtk-vcodec/mtk_vcodec_enc_pm.c | 56 --------- .../media/platform/mtk-vcodec/mtk_vcodec_enc_pm.h | 1 - .../media/platform/mtk-vcodec/venc/venc_vp8_if.c | 4 +- drivers/memory/mtk-smi.c | 41 +++---- include/soc/mediatek/smi.h | 20 ---- 28 files changed, 246 insertions(+), 426 deletions(-) -- 1.9.1