linux-kernel - Re: [PATCH v7 00/23] drm/sun4i: Allwinner A64 MIPI-DSI support

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Date:   Wed, 13 Feb 2019 10:03:08 +0100
From:   Maxime Ripard <maxime.ripard@...tlin.com>
To:     Jagan Teki <jagan@...rulasolutions.com>
Cc:     David Airlie <airlied@...ux.ie>, Daniel Vetter <daniel@...ll.ch>,
        Chen-Yu Tsai <wens@...e.org>,
        Michael Turquette <mturquette@...libre.com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        linux-clk <linux-clk@...r.kernel.org>,
        dri-devel <dri-devel@...ts.freedesktop.org>,
        devicetree <devicetree@...r.kernel.org>,
        Michael Trimarchi <michael@...rulasolutions.com>,
        linux-amarula@...rulasolutions.com,
        linux-sunxi <linux-sunxi@...glegroups.com>
Subject: Re: [PATCH v7 00/23] drm/sun4i: Allwinner A64 MIPI-DSI support

On Tue, Feb 12, 2019 at 03:16:02PM +0530, Jagan Teki wrote:
> On Fri, Feb 1, 2019 at 9:12 PM Jagan Teki <jagan@...rulasolutions.com> wrote:
> >
> > Here is next version changes for Allwinner A64 MIPI-DSI support
> >
> > This series grouped the changes like previous version[1] with different
> > sets to support three different panels types that can fit into the DSI
> > controller.
> >
> > set:1, for 4-lane, burst mode support
> > - patch 0001: 0009, DSI controller changes that support burst mode.
> >
> > set:2, for A64 DSI support
> > - patch 0010: tcon dclk divider computation based on A64 BSP.
> > - patch 0011: 0017, Allwinner A64 DSI controller changes.
> >
> > set:3, enable 4-lane burst mode panel:
> > - patch 0018: Overlay patch that enable Feiyang FY07024DI26A30-D
> >   burst mode panel on Pine64-LTS
> >
> > set:4, enable 4-lane video mode panel:
> > - patch 0019: msg type MIPI_DSI_GENERIC_SHORT_WRITE_2_PARAM support
> > - patch 0020: Overlay patch that enable Bananapi S070WV20-CT16 ICN6211
> >   panel on Bananapi M64
> >
> > set:5, enable 2-lane video mode panel:
> > - patch 0021, 0022: DSI hfp and hbp timings fixes
> > - patch 0023: Enable Techstar TS8550B panel on Amarula A64-Relic
> >
> > Changes for v7:
> > - moved vcc-dsi binding to required filed.
> > - drop quotes on fallback dphy bindings.
> > - drop min_rate clock pll-mipi patches.
> > - introduce dclk divider computation as like A64 BSP.
> > - add A64 DSI quark patches.
> > - fixed A64 DSI pipeline.
> > - add proper commit messages.
> > - collect Merlijn Wajer Tested-by credits.
> > Changes for v6:
> > - dropped unneeded changes, patches
> > - fixed all burst mode patches as per previous version comments
> > - rebase on master
> > - update proper commit message
> > - dropped unneeded comments
> > - order the patches that make review easy
> > Changes for v5:
> > - collect Rob, Acked-by
> > - droped "Fix VBP size calculation" patch
> > - updated vblk timing calculation.
> > - droped techstar, bananapi dsi panel drivers which may require
> >   bridge or other setup. it's under discussion.
> > Changes for v4:
> > - droppoed untested CCU_FEATURE_FIXED_POSTDIV check code in
> >   nkm min, max rate patches
> > - create two patches for "Add Allwinner A64 MIPI DSI support"
> >   one for has_mod_clk quirk and other one for A64 support
> > - use existing driver code construct for hblk computation
> > - dropped "Increase hfp packet overhead" patch [2], though BSP added
> >   this but we have no issues as of now.
> >   (no issues on panel side w/o this change)
> > - create separate function for vblk computation
> > - enable vcc-dsi regulator in dsi_runtime_resume
> > - collect Rob, Acked-by
> > - update MAINTAINERS file for panel drivers
> > - cleanup commit messages
> > - fixed checkpatch warnings/errors
> >
> > [1] https://patchwork.kernel.org/cover/10779893/
> >
> > Any inputs?
> > Jagan.
> >
> > Jagan Teki (23):
> >   drm/sun4i: sun6i_mipi_dsi: Compute burst mode loop N1 instruction
> >     delay
> >   drm/sun4i: sun6i_mipi_dsi: Support instruction loop selection
> >   drm/sun4i: sun6i_mipi_dsi: Setup burst mode timings
> >   drm/sun4i: sun6i_mipi_dsi: Simplify drq to support all modes
> >   drm/sun4i: tcon: Export get tcon0 routine
> >   drm/sun4i: sun6i_mipi_dsi: Probe tcon0 during dsi_bind
> >   drm/sun4i: sun6i_mipi_dsi: Setup burst mode
> >   drm/sun4i: sun6i_mipi_dsi: Enable trail_inv and trail_fill controls
> >   drm/sun4i: sun6i_mipi_dsi: Enable HBP, HSA_HSE for burst mode
> 
> Can you pick these burst changes which are generic to all SoCs. and
> reset will send once we decide the tcon clock.

These patches don't implement what we discussed last week, and as I
told you already, most of them really need some work on the commit log
and their explanations.

Maxime

-- 
Maxime Ripard, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com

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