Linux-mediatek Archive on lore.kernel.org
 help / color / Atom feed
* [PATCH v7 00/13] arm/arm64: mediatek: Fix mmsys device probing
@ 2020-02-13 20:19 matthias.bgg
  2020-02-13 20:19 ` [PATCH v7 01/13] dt-bindings: arm: move mmsys description to display matthias.bgg
                   ` (12 more replies)
  0 siblings, 13 replies; 22+ messages in thread
From: matthias.bgg @ 2020-02-13 20:19 UTC (permalink / raw)
  To: robh+dt, mark.rutland, ck.hu, p.zabel, airlied, mturquette,
	sboyd, ulrich.hecht+renesas, laurent.pinchart, enric.balletbo
  Cc: Kate Stewart, Andrew-CT Chen, Minghsiu Tsai, dri-devel,
	Richard Fontana, linux-clk, drinkcat, Weiyi Lu, wens,
	linux-arm-kernel, mtk01761, linux-media, devicetree, frank-w,
	Seiya Wang, sean.wang, Houlong Wei, linux-mediatek, hsinyi,
	Matthias Brugger, Thomas Gleixner, Mauro Carvalho Chehab,
	Allison Randal, Matthias Brugger, Greg Kroah-Hartman, rdunlap,
	linux-kernel, Daniel Vetter, matthias.bgg

From: Matthias Brugger <mbrugger@suse.com>

This is version seven of the series. The biggest change is, that I added
a first patch that actually moves the mmsys binding from arm/mediatek to
display/mediatek, as in effect the mmsys is part of the display
subsystem.

Since version five, the clock probing is implemented through a platform driver.
The corresponding platform device get's created in the DRM driver. I converted
all the clock drivers to platform drivers and tested the approach on the Acer
Chromebook R13 (mt8173 based).
Apart from that I reordered the patches so that the DT bindings update are the
first patches.

MMSYS in Mediatek SoCs has some registers to control clock gates (which is
used in the clk driver) and some registers to set the routing and enable
the differnet blocks of the display subsystem.

Up to now both drivers, clock and drm are probed with the same device tree
compatible. But only the first driver get probed, which in effect breaks
graphics on mt8173 and mt2701.

This patch uses a platform device registration in the DRM driver, which
will trigger the probe of the corresponding clock driver. It was tested on the
Acer R13 Chromebook.

Changes in v7:
- move the binding description
- add hint to the mmsys binding document
- make mmsys description generic
- fix typo in commit message
- fix check of return value of of_clk_get
- free clk_data->clks as well
- get rid of private data structure

Changes in v6:
- re-arrange the patch order
- generate platform_device for mmsys clock driver inside the DRM driver
- fix DTS binding accordingly
- switch all mmsys clock driver to platform probing
- fix mt8173 platform driver remove function
- fix probe defer path in HDMI driver
- fix probe defer path in mtk_mdp_comp
- fix identation of error messages

Changes in v5:
- fix missing regmap accessors in drm diver (patch 1)
- omit probe deffered warning on all drivers (patch 5)
- update drm and clk bindings (patch 6 and 7)
- put mmsys clock part in dts child node of mmsys. Only done
for HW where no dts backport compatible breakage is expected
(either DRM driver not yet implemented or no HW available to
the public) (patch 9 to 12)

Changes in v4:
- use platform device to probe clock driver
- add Acked-by CK Hu for the probe deferred patch

Changes in v3:
- fix kconfig typo (shame on me)
- delete __initconst from mm_clocks as converted to a platform driver

Changes in v2:
- add binding documentation
- ddp: use regmap_update_bits
- ddp: ignore EPROBE_DEFER on clock probing
- mfd: delete mmsys_private
- add Reviewed-by and Acked-by tags

Matthias Brugger (13):
  dt-bindings: arm: move mmsys description to display
  dt-bindings: display: mediatek: Add mmsys binding description
  dt-bindings: mediatek: Add compatible for mt7623
  drm/mediatek: Use regmap for register access
  drm: mediatek: Omit warning on probe defers
  media: mtk-mdp: Check return value of of_clk_get
  clk: mediatek: mt2701: switch mmsys to platform device probing
  clk: mediatek: mt2712e: switch to platform device probing
  clk: mediatek: mt6779: switch mmsys to platform device probing
  clk: mediatek: mt6797: switch to platform device probing
  clk: mediatek: mt8183: switch mmsys to platform device probing
  clk: mediatek: mt8173: switch mmsys to platform device probing
  drm/mediatek: Add support for mmsys through a pdev

 .../display/mediatek/mediatek,disp.txt        |  5 ++
 .../mediatek/mediatek,mmsys.txt               |  9 +---
 drivers/clk/mediatek/clk-mt2701-mm.c          | 34 ++++++++----
 drivers/clk/mediatek/clk-mt2712-mm.c          | 32 +++++++----
 drivers/clk/mediatek/clk-mt6779-mm.c          | 32 +++++++----
 drivers/clk/mediatek/clk-mt6797-mm.c          | 34 ++++++++----
 drivers/clk/mediatek/clk-mt8173.c             | 45 +++++++++++++---
 drivers/clk/mediatek/clk-mt8183-mm.c          | 30 +++++++----
 drivers/gpu/drm/mediatek/mtk_disp_color.c     |  5 +-
 drivers/gpu/drm/mediatek/mtk_disp_ovl.c       |  5 +-
 drivers/gpu/drm/mediatek/mtk_disp_rdma.c      |  5 +-
 drivers/gpu/drm/mediatek/mtk_dpi.c            | 12 +++--
 drivers/gpu/drm/mediatek/mtk_drm_crtc.c       |  4 +-
 drivers/gpu/drm/mediatek/mtk_drm_ddp.c        | 53 ++++++++-----------
 drivers/gpu/drm/mediatek/mtk_drm_ddp.h        |  4 +-
 drivers/gpu/drm/mediatek/mtk_drm_drv.c        | 35 +++++++++---
 drivers/gpu/drm/mediatek/mtk_drm_drv.h        |  4 +-
 drivers/gpu/drm/mediatek/mtk_dsi.c            |  8 ++-
 drivers/gpu/drm/mediatek/mtk_hdmi.c           |  4 +-
 drivers/media/platform/mtk-mdp/mtk_mdp_comp.c |  6 +++
 20 files changed, 246 insertions(+), 120 deletions(-)
 rename Documentation/devicetree/bindings/{arm => display}/mediatek/mediatek,mmsys.txt (61%)

-- 
2.24.1


_______________________________________________
Linux-mediatek mailing list
Linux-mediatek@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-mediatek

^ permalink raw reply	[flat|nested] 22+ messages in thread

end of thread, back to index

Thread overview: 22+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-02-13 20:19 [PATCH v7 00/13] arm/arm64: mediatek: Fix mmsys device probing matthias.bgg
2020-02-13 20:19 ` [PATCH v7 01/13] dt-bindings: arm: move mmsys description to display matthias.bgg
2020-02-14  6:42   ` CK Hu
2020-02-14 10:01     ` Matthias Brugger
2020-02-14 12:19       ` Enric Balletbo i Serra
2020-02-14 16:22         ` CK Hu
2020-02-13 20:19 ` [PATCH v7 02/13] dt-bindings: display: mediatek: Add mmsys binding description matthias.bgg
2020-02-18 20:31   ` Rob Herring
2020-02-13 20:19 ` [PATCH v7 03/13] dt-bindings: mediatek: Add compatible for mt7623 matthias.bgg
2020-02-13 20:19 ` [PATCH v7 04/13] drm/mediatek: Use regmap for register access matthias.bgg
2020-02-13 20:19 ` [PATCH v7 05/13] drm: mediatek: Omit warning on probe defers matthias.bgg
2020-02-13 20:19 ` [PATCH v7 06/13] media: mtk-mdp: Check return value of of_clk_get matthias.bgg
2020-02-24 17:36   ` Hans Verkuil
2020-02-24 21:47     ` Matthias Brugger
2020-02-13 20:19 ` [PATCH v7 07/13] clk: mediatek: mt2701: switch mmsys to platform device probing matthias.bgg
2020-02-13 20:19 ` [PATCH v7 08/13] clk: mediatek: mt2712e: switch " matthias.bgg
2020-02-13 20:19 ` [PATCH v7 09/13] clk: mediatek: mt6779: switch mmsys " matthias.bgg
2020-02-13 20:19 ` [PATCH v7 10/13] clk: mediatek: mt6797: switch " matthias.bgg
2020-02-13 20:19 ` [PATCH v7 11/13] clk: mediatek: mt8183: switch mmsys " matthias.bgg
2020-02-14  1:52   ` CK Hu
2020-02-13 20:19 ` [PATCH v7 12/13] clk: mediatek: mt8173: " matthias.bgg
2020-02-13 20:19 ` [PATCH v7 13/13] drm/mediatek: Add support for mmsys through a pdev matthias.bgg

Linux-mediatek Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-mediatek/0 linux-mediatek/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-mediatek linux-mediatek/ https://lore.kernel.org/linux-mediatek \
		linux-mediatek@lists.infradead.org
	public-inbox-index linux-mediatek

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.infradead.lists.linux-mediatek


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git