On 07/04/2025, Liu Ying wrote: > Hi, > > This patch series aims to use prefetch engine in imx8-dc KMS driver. > > One prefetch engine consists of one DPR Channel(DPRC) and one or two > Display Prefetch Resolve Gaskets(PRGs). It prefetches data from > DDR, resolves data in tile formats if needed and outputs the result > data to FetchUnit(s). When one PRG is used, a prefetch engine supports > processing pixel formats with one planar, e.g., RGB formats. When two > are used, pixel formats with two planars are supported, e.g., NV12. > > For now, this patch series only supports prefetch engines with one PRG > because it is enough for XRGB8888 which is the only pixel format > supported by imx8-dc plane driver. Two PRGs would be supported by > future patches. > > Patch 1 and 2 add dt-bindings for DPRC and PRG. They were reviewed > by Rob[1][2]. I slightly modified the patches' commit message to use > imperative mood. > > Patch 3 adds DPRC and PRG dt-binding files to MAINTAINERS. > > Patch 4 fixes FetchUnit dimensions as related to prefetch engine function. > > Patch 5 disables CRTC at boot if needed to support prefetch engine better. > > Patch 6 and 7 add PRG and DPRC drivers. > > Patch 8 to 13 do preparations before using prefetch engine in imx8-dc KMS > driver. > > Patch 14 uses prefetch engine in imx8-dc KMS driver. > > [1] https://lore.kernel.org/lkml/20201207165945.ga430...@robh.at.kernel.org/ > [2] https://lore.kernel.org/lkml/20201207170206.ga434...@robh.at.kernel.org/ > > Signed-off-by: Liu Ying <victor....@nxp.com> > --- > Liu Ying (14): > dt-bindings: display: imx: Add i.MX8qxp/qm PRG binding > dt-bindings: display: imx: Add i.MX8qxp/qm DPR channel binding > MAINTAINERS: Add i.MX8qxp prefetch engine DT binding files > drm/imx: dc-fu: Fix dimensions > drm/imx: dc-crtc: Disable at boot > drm/imx: dc: Add PRG support > drm/imx: dc: Add DPR channel support > drm/imx: dc: Use TCON operation mode > drm/imx: dc-ed: Support getting source selection > drm/imx: dc-lb: Support getting secondary input selection > drm/imx: dc-ed: Drop initial source selection > drm/imx: dc-lb: Drop initial primary and secondary input selections > drm/imx: dc-fu: Get DPR channel > drm/imx: dc: Use prefetch engine > > .../bindings/display/imx/fsl,imx8qxp-dprc.yaml | 100 +++++ > .../bindings/display/imx/fsl,imx8qxp-prg.yaml | 60 +++ > MAINTAINERS | 2 + > drivers/gpu/drm/imx/dc/Kconfig | 1 + > drivers/gpu/drm/imx/dc/Makefile | 6 +- > drivers/gpu/drm/imx/dc/dc-crtc.c | 191 +++++++- > drivers/gpu/drm/imx/dc/dc-de.h | 2 + > drivers/gpu/drm/imx/dc/dc-dprc.c | 499 > +++++++++++++++++++++ > drivers/gpu/drm/imx/dc/dc-dprc.h | 35 ++ > drivers/gpu/drm/imx/dc/dc-drv.c | 7 + > drivers/gpu/drm/imx/dc/dc-drv.h | 5 + > drivers/gpu/drm/imx/dc/dc-ed.c | 27 +- > drivers/gpu/drm/imx/dc/dc-fl.c | 7 +- > drivers/gpu/drm/imx/dc/dc-fu.c | 49 +- > drivers/gpu/drm/imx/dc/dc-fu.h | 11 +- > drivers/gpu/drm/imx/dc/dc-fw.c | 7 +- > drivers/gpu/drm/imx/dc/dc-kms.h | 7 + > drivers/gpu/drm/imx/dc/dc-lb.c | 23 +- > drivers/gpu/drm/imx/dc/dc-pe.h | 2 + > drivers/gpu/drm/imx/dc/dc-plane.c | 46 +- > drivers/gpu/drm/imx/dc/dc-prg.c | 335 ++++++++++++++ > drivers/gpu/drm/imx/dc/dc-prg.h | 39 ++ > drivers/gpu/drm/imx/dc/dc-tc.c | 114 ++++- > 23 files changed, 1545 insertions(+), 30 deletions(-) > --- > base-commit: 50c8770a42faf8b1c7abe93e7c114337f580a97d > change-id: 20250703-imx8-dc-prefetch-028e306591c6 > > Best regards,
Gentle ping. -- Regards, Liu Ying
