linux-kernel - Re: [RESEND PATCH v2 0/5] Fix the parse_dt of exynos dsi and remove the OF graph

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Message-ID: <CAJKOXPfv8wJ+0L4G_0sB1Qh-svXx4VvNJH_1THSy5SsXuUstzA@mail.gmail.com>
Date:   Tue, 28 Feb 2017 11:58:25 +0200
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     Hoegeun Kwon <hoegeun.kwon@...sung.com>
Cc:     Inki Dae <inki.dae@...sung.com>, jy0922.shim@...sung.com,
        Seung Woo Kim <sw0312.kim@...sung.com>, airlied@...ux.ie,
        kgene@...nel.org, robh+dt@...nel.org, mark.rutland@....com,
        catalin.marinas@....com, will.deacon@....com,
        Javier Martinez Canillas <javier@....samsung.com>,
        dri-devel@...ts.freedesktop.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org
Subject: Re: [RESEND PATCH v2 0/5] Fix the parse_dt of exynos dsi and remove
 the OF graph

On Tue, Feb 28, 2017 at 10:17 AM, Hoegeun Kwon <hoegeun.kwon@...sung.com> wrote:
> Hi All,
>
> [Resend this v2 patches, because i have missing TO and CC.]
>
> The dsi + panel is a parental relationship, so OF grpah is not needed.
> Therefore, the current dsi_parse_dt function will throw an error,
> because there is no linked OF graph for case such as fimd + dsi +
> panel.
>
> So the 1/5 patch parse the Pll, burst and esc clock frequency
> properties in dsi_parse_dt and modified to create a bridge_node only
> if there is an OF graph associated with dsi.
>
> Also fixed the dts, which depend on the 1/5 patch. So removed the
> ports node and move burst and esc clock frequency properties to the
> parent (DSI node).

Discussions in previous thread lead us to bisectability problem.
Bisectability in regular driver changes is one thing but in case of
driver + DTS the gap is much bigger. DTS will go through separate tree
and branches. How do you want to solve the problem?

Best regards,
Krzysztof