[PATCH v3 0/4] Add support for iMX8MQ Display Controller Subsystem

[Lukas Hartmann]

Hi Laurentiu,

thanks for the updated patch! I can confirm after intensive testing that the hangs on boot are fixed in this version (I’m using DCSS->MIPI DSI->TI eDP Bridge).

Best
Lukas
-- 

Lukas F. Hartmann, CEO
MNT Research GmbH
https://mntre.com

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> On 6. Dec 2019, at 10:53, Laurentiu Palcu <laurentiu.palcu at nxp.com> wrote:
> 
> Hi,
> 
> This patchset adds initial DCSS support for iMX8MQ chip. Initial support
> includes only graphics plane support (no video planes), no HDR10 capabilities,
> no graphics decompression (only linear, tiled and super-tiled buffers allowed).
> 
> Support for the rest of the features will be added incrementally, in subsequent
> patches.
> 
> The patchset was tested with both HDP driver (not yet upstreamed) and MIPI-DSI
> (drivers already on the dri-devel ML).
> 
> Thanks,
> Laurentiu
> 
> Changes in v3:
> * rebased to latest linux-next and made it compile as drmP.h was
>   removed;
> * removed the patch adding the VIDEO2_PLL clock. It's already applied;
> * removed an unnecessary 50ms sleep in the dcss_dtg_sync_set();
> * fixed a a spurious hang reported by Lukas Hartmann and encountered
>   by me several times;
> * mask DPR and DTG interrupts by default, as they may come enabled from
>   U-boot;
> 
> Changes in v2:
> * Removed '0x' in node's unit-address both in DT and yaml;
> * Made the address region size lowercase, to be consistent;
> * Removed some left-over references to P010;
> * Added a Kconfig dependency of DRM && ARCH_MXC. This will also silence compilation
>   issues reported by kbuild for other architectures;
> 
> 
> Laurentiu Palcu (4):
>  drm/imx: compile imx directory by default
>  drm/imx: Add initial support for DCSS on iMX8MQ
>  dt-bindings: display: imx: add bindings for DCSS
>  arm64: dts: imx8mq: add DCSS node
> 
> .../bindings/display/imx/nxp,imx8mq-dcss.yaml      |  86 +++
> arch/arm64/boot/dts/freescale/imx8mq.dtsi          |  25 +
> drivers/gpu/drm/Makefile                           |   2 +-
> drivers/gpu/drm/imx/Kconfig                        |   2 +
> drivers/gpu/drm/imx/Makefile                       |   1 +
> drivers/gpu/drm/imx/dcss/Kconfig                   |   8 +
> drivers/gpu/drm/imx/dcss/Makefile                  |   6 +
> drivers/gpu/drm/imx/dcss/dcss-blkctl.c             |  75 ++
> drivers/gpu/drm/imx/dcss/dcss-crtc.c               | 224 ++++++
> drivers/gpu/drm/imx/dcss/dcss-ctxld.c              | 447 +++++++++++
> drivers/gpu/drm/imx/dcss/dcss-dev.c                | 286 +++++++
> drivers/gpu/drm/imx/dcss/dcss-dev.h                | 195 +++++
> drivers/gpu/drm/imx/dcss/dcss-dpr.c                | 550 ++++++++++++++
> drivers/gpu/drm/imx/dcss/dcss-drv.c                | 181 +++++
> drivers/gpu/drm/imx/dcss/dcss-dtg.c                | 442 +++++++++++
> drivers/gpu/drm/imx/dcss/dcss-kms.c                | 322 ++++++++
> drivers/gpu/drm/imx/dcss/dcss-kms.h                |  52 ++
> drivers/gpu/drm/imx/dcss/dcss-plane.c              | 418 +++++++++++
> drivers/gpu/drm/imx/dcss/dcss-scaler.c             | 826 +++++++++++++++++++++
> drivers/gpu/drm/imx/dcss/dcss-ss.c                 | 179 +++++
> 20 files changed, 4326 insertions(+), 1 deletion(-)
> create mode 100644 Documentation/devicetree/bindings/display/imx/nxp,imx8mq-dcss.yaml
> create mode 100644 drivers/gpu/drm/imx/dcss/Kconfig
> create mode 100644 drivers/gpu/drm/imx/dcss/Makefile
> create mode 100644 drivers/gpu/drm/imx/dcss/dcss-blkctl.c
> create mode 100644 drivers/gpu/drm/imx/dcss/dcss-crtc.c
> create mode 100644 drivers/gpu/drm/imx/dcss/dcss-ctxld.c
> create mode 100644 drivers/gpu/drm/imx/dcss/dcss-dev.c
> create mode 100644 drivers/gpu/drm/imx/dcss/dcss-dev.h
> create mode 100644 drivers/gpu/drm/imx/dcss/dcss-dpr.c
> create mode 100644 drivers/gpu/drm/imx/dcss/dcss-drv.c
> create mode 100644 drivers/gpu/drm/imx/dcss/dcss-dtg.c
> create mode 100644 drivers/gpu/drm/imx/dcss/dcss-kms.c
> create mode 100644 drivers/gpu/drm/imx/dcss/dcss-kms.h
> create mode 100644 drivers/gpu/drm/imx/dcss/dcss-plane.c
> create mode 100644 drivers/gpu/drm/imx/dcss/dcss-scaler.c
> create mode 100644 drivers/gpu/drm/imx/dcss/dcss-ss.c
> 
> -- 
> 2.7.4
> 
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