linux-kernel - Re: [linux-sunxi] [PATCH v3 00/24] Add support for R40 HDMI pipeline

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Date:   Mon, 25 Jun 2018 14:07:22 +0200
From:   Jernej Škrabec <jernej.skrabec@...il.com>
To:     linux-sunxi@...glegroups.com
Cc:     maxime.ripard@...tlin.com, wens@...e.org, robh+dt@...nel.org,
        airlied@...ux.ie, gustavo@...ovan.org,
        maarten.lankhorst@...ux.intel.com, seanpaul@...omium.org,
        mark.rutland@....com, dri-devel@...ts.freedesktop.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-clk@...r.kernel.org
Subject: Re: [linux-sunxi] [PATCH v3 00/24] Add support for R40 HDMI pipeline

Dne ponedeljek, 25. junij 2018 ob 14:02:40 CEST je Jernej Skrabec napisal(a):
> This series adds support for R40 HDMI pipeline. It is a bit special
> than other already supported pipelines because it has additional unit
> called TCON TOP responsible for relationship configuration between
> mixers, TCONs and HDMI. Additionally, it has additional gates for DSI
> and TV TCONs, TV encoder clock settings and pin muxing between LCD
> and TV encoders.
> 
> However, it seems that TCON TOP will become a norm, since newer
> Allwinner SoCs like H6 also have this unit.
> 
> I tested different possible configurations:
> - mixer0 <> TCON-TV0 <> HDMI
> - mixer0 <> TCON-TV1 <> HDMI
> - mixer1 <> TCON-TV0 <> HDMI
> - mixer1 <> TCON-TV1 <> HDMI
> 
> Please review.
> 
> Best regards,
> Jernej
> 
> Changes from v2:
> - Collected tags
> - Exported drm_crtc_port_mask() symbol
> - Removed TCON TOP reset name
> - TCON TOP gates have now right parents
> - updated TCON TOP bindings
> - dropped new TCON quirk due TCON TOP rework

Forgot to add:
- in "drm/sun4i: Don't change clock bits in DW HDMI PHY driver" patch, only 
parent selection bit is reset to 0. Previously whole register was set to 0. 
Previous version broke H3 HDMI.

> 
> Changes from v1:
> - Split DT bindings patch and updated description
> - Split HDMI PHY patch
> - Move header file from TCON TOP patch to dt bindings patch
> - Added Rob reviewed-by tag
> - Used clk_hw_register_gate() instead of custom gate registration code
> - Reworked TCON TOP to be part of of-graph. Because of that, a lot of
>   new patches were added.
> - Droped mixer index quirk patch
> - Reworked TCON support for TCON TOP
> - Updated commit messages
> 
> Jernej Skrabec (24):
>   clk: sunxi-ng: r40: Add minimal rate for video PLLs
>   clk: sunxi-ng: r40: Allow setting parent rate to display related
>     clocks
>   clk: sunxi-ng: r40: Export video PLLs
>   dt-bindings: display: sunxi-drm: Add TCON TOP description
>   drm/sun4i: Add TCON TOP driver
>   drm/sun4i: Fix releasing node when enumerating enpoints
>   drm/sun4i: Split out code for enumerating endpoints in output port
>   drm/sun4i: Add support for traversing graph with TCON TOP
>   drm/sun4i: Don't skip TCONs if they don't have channel 0
>   drm/sun4i: tcon: Generalize engine search algorithm
>   drm/sun4i: Don't check for LVDS and RGB when TCON has only ch1
>   drm/sun4i: Don't check for panel or bridge on TV TCONs
>   dt-bindings: display: sun4i-drm: Add R40 mixer compatibles
>   drm/sun4i: Add support for R40 mixers
>   dt-bindings: display: sun4i-drm: Add description of A64 HDMI PHY
>   drm/sun4i: Enable DW HDMI PHY clock
>   drm/sun4i: Don't change clock bits in DW HDMI PHY driver
>   drm/sun4i: DW HDMI PHY: Add support for second PLL
>   drm/sun4i: Add support for second clock parent to DW HDMI PHY clk
>     driver
>   drm/sun4i: Add support for A64 HDMI PHY
>   drm: of: Export drm_crtc_port_mask()
>   drm/sun4i: DW HDMI: Expand algorithm for possible crtcs
>   ARM: dts: sun8i: r40: Add HDMI pipeline
>   ARM: dts: sun8i: r40: Enable HDMI output on BananaPi M2 Ultra
> 
>  .../bindings/display/sunxi/sun4i-drm.txt      |  62 +++-
>  .../boot/dts/sun8i-r40-bananapi-m2-ultra.dts  |  45 +++
>  arch/arm/boot/dts/sun8i-r40.dtsi              | 269 ++++++++++++++++
>  drivers/clk/sunxi-ng/ccu-sun8i-r40.c          |  58 ++--
>  drivers/clk/sunxi-ng/ccu-sun8i-r40.h          |   8 +-
>  drivers/gpu/drm/drm_of.c                      |   5 +-
>  drivers/gpu/drm/sun4i/Makefile                |   3 +-
>  drivers/gpu/drm/sun4i/sun4i_drv.c             | 121 +++++--
>  drivers/gpu/drm/sun4i/sun4i_tcon.c            |  66 ++--
>  drivers/gpu/drm/sun4i/sun8i_dw_hdmi.c         |  46 ++-
>  drivers/gpu/drm/sun4i/sun8i_dw_hdmi.h         |   8 +-
>  drivers/gpu/drm/sun4i/sun8i_hdmi_phy.c        |  54 +++-
>  drivers/gpu/drm/sun4i/sun8i_hdmi_phy_clk.c    |  90 ++++--
>  drivers/gpu/drm/sun4i/sun8i_mixer.c           |  24 ++
>  drivers/gpu/drm/sun4i/sun8i_tcon_top.c        | 300 ++++++++++++++++++
>  drivers/gpu/drm/sun4i/sun8i_tcon_top.h        |  40 +++
>  include/drm/drm_of.h                          |   8 +
>  include/dt-bindings/clock/sun8i-r40-ccu.h     |   4 +
>  include/dt-bindings/clock/sun8i-tcon-top.h    |  11 +
>  19 files changed, 1100 insertions(+), 122 deletions(-)
>  create mode 100644 drivers/gpu/drm/sun4i/sun8i_tcon_top.c
>  create mode 100644 drivers/gpu/drm/sun4i/sun8i_tcon_top.h
>  create mode 100644 include/dt-bindings/clock/sun8i-tcon-top.h