linux-kernel - Re: [PATCH v2 0/7] Renesas V4H DSI & DP output support

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Date:   Tue, 29 Nov 2022 03:58:00 +0200
From:   Laurent Pinchart <laurent.pinchart@...asonboard.com>
To:     Tomi Valkeinen <tomi.valkeinen+renesas@...asonboard.com>
Cc:     Kieran Bingham <kieran.bingham+renesas@...asonboard.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Magnus Damm <magnus.damm@...il.com>,
        dri-devel@...ts.freedesktop.org, linux-renesas-soc@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Andrzej Hajda <andrzej.hajda@...el.com>,
        Neil Armstrong <neil.armstrong@...aro.org>,
        Robert Foss <robert.foss@...aro.org>,
        Jonas Karlman <jonas@...boo.se>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        Tomi Valkeinen <tomi.valkeinen@...asonboard.com>
Subject: Re: [PATCH v2 0/7] Renesas V4H DSI & DP output support

Hi Tomi,

On Wed, Nov 23, 2022 at 08:59:39AM +0200, Tomi Valkeinen wrote:
> From: Tomi Valkeinen <tomi.valkeinen@...asonboard.com>
> 
> Hi,
> 
> These add support for DSI on V4H SoC (r8a779g0) and DP for Whitehawk
> board.
> 
> Changes in v2:
> - A few cosmetic changes
> - Increase vspd address range in dts to 0x7000
> - Arrange nodes in dts by the block address
> - Use gen = 4 for r8a779g0 du
> - Drop the CLOCKSET1 hack patch
> 
> The CLOCKSET1 patch is apparently not needed to get the DSI & DP
> working. Which is baffling, as I'm quite sure it was needed. There are a
> few possible explanations: 1) it was never needed and I was just messing
> things up, 2) it was needed, but some of my later improvements made it
> unnecessary, 3) Whitehawk board firmware was updated in the middle of
> the development of this series, possibly the firmware made the patch
> unnecessary.
> 
>  Tomi
> 
> Tomi Valkeinen (7):
>   dt-bindings: display: renesas,du: Provide bindings for r8a779g0
>   dt-bindings: display: bridge: renesas,dsi-csi2-tx: Add r8a779g0
>   clk: renesas: r8a779g0: Add display related clocks
>   arm64: dts: renesas: r8a779g0: Add display related nodes
>   arm64: dts: renesas: white-hawk-cpu: Add DP output support
>   drm: rcar-du: Add r8a779g0 support
>   drm: rcar-du: dsi: Add r8A779g0 support

I'll take patches 1/7, 2/7 and 6/7 in my tree already for v6.3. I expect
Geert to handle 3/7, 4/7 and 5/7. 7/7 needs a v3.

> 
>  .../display/bridge/renesas,dsi-csi2-tx.yaml   |   3 +-
>  .../bindings/display/renesas,du.yaml          |   2 +
>  .../dts/renesas/r8a779g0-white-hawk-cpu.dtsi  |  94 ++++
>  arch/arm64/boot/dts/renesas/r8a779g0.dtsi     | 130 +++++
>  drivers/clk/renesas/r8a779g0-cpg-mssr.c       |  14 +
>  drivers/gpu/drm/rcar-du/rcar_du_drv.c         |  22 +
>  drivers/gpu/drm/rcar-du/rcar_du_group.c       |   2 +-
>  drivers/gpu/drm/rcar-du/rcar_mipi_dsi.c       | 484 ++++++++++++++----
>  drivers/gpu/drm/rcar-du/rcar_mipi_dsi_regs.h  |   6 +-
>  9 files changed, 649 insertions(+), 108 deletions(-)
> 

-- 
Regards,

Laurent Pinchart