| From: |
| Liu Ying <victor.liu-AT-nxp.com> |
| To: |
| Philipp Zabel <p.zabel-AT-pengutronix.de>, Maarten Lankhorst <maarten.lankhorst-AT-linux.intel.com>, Maxime Ripard <mripard-AT-kernel.org>, Thomas Zimmermann <tzimmermann-AT-suse.de>, David Airlie <airlied-AT-gmail.com>, Simona Vetter <simona-AT-ffwll.ch>, Rob Herring <robh-AT-kernel.org>, Krzysztof Kozlowski <krzk+dt-AT-kernel.org>, Conor Dooley <conor+dt-AT-kernel.org>, Shawn Guo <shawnguo-AT-kernel.org>, Sascha Hauer <s.hauer-AT-pengutronix.de>, Pengutronix Kernel Team <kernel-AT-pengutronix.de>, Fabio Estevam <festevam-AT-gmail.com>, Dmitry Baryshkov <lumag-AT-kernel.org> |
| Subject: |
| [PATCH v3 00/14] drm/imx: dc: Use prefetch engine |
| Date: |
| Mon, 29 Sep 2025 10:41:35 +0800 |
| Message-ID: |
| <20250929-imx8-dc-prefetch-v3-0-c01d0608add2@nxp.com> |
| Cc: |
| dri-devel-AT-lists.freedesktop.org, devicetree-AT-vger.kernel.org, imx-AT-lists.linux.dev, linux-arm-kernel-AT-lists.infradead.org, linux-kernel-AT-vger.kernel.org, Liu Ying <victor.liu-AT-nxp.com>, Frank Li <Frank.Li-AT-nxp.com>, Alexander Stein <alexander.stein-AT-ew.tq-group.com> |
| Archive-link: |
| Article |
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.GA430214@robh...
[2] https://lore.kernel.org/lkml/20201207170206.GA434964@robh...
Signed-off-by: Liu Ying <victor.liu@nxp.com>
---
Changes in v3:
- Call dc_dprc_enable() only when start == true in patch 7. (Frank)
- Collect Frank's R-b tags.
- Link to v2: https://lore.kernel.org/r/20250923-imx8-dc-prefetch-v2-0-...
Changes in v2:
- Rebase the patch series onto next-20250922.
- Collect Alexander's and Frank's R-b tags.
- Manage PRG's and DPRC's clocks with bulk interfaces in patch 6&7. (Frank)
- Sort variables in probe function in reverse Christmas tree fashion in patch 7. (Frank)
- Link to v1: https://lore.kernel.org/r/20250704-imx8-dc-prefetch-v1-0-...
---
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 | 466 +++++++++++++++++++++
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 | 320 ++++++++++++++
drivers/gpu/drm/imx/dc/dc-prg.h | 39 ++
drivers/gpu/drm/imx/dc/dc-tc.c | 114 ++++-
23 files changed, 1497 insertions(+), 30 deletions(-)
---
base-commit: bf2602a3cb2381fb1a04bf1c39a290518d2538d1
change-id: 20250703-imx8-dc-prefetch-028e306591c6
Best regards,
--
Liu Ying <victor.liu@nxp.com>
