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From: Matthias Kaehlcke <mka@chromium.org>
To: Doug Anderson <dianders@chromium.org>
Cc: Rob Clark <robdclark@gmail.com>, David Airlie <airlied@linux.ie>,
	Rob Herring <robh+dt@kernel.org>,
	Mark Rutland <mark.rutland@arm.com>,
	Andy Gross <andy.gross@linaro.org>,
	David Brown <david.brown@linaro.org>,
	Archit Taneja <architt@codeaurora.org>,
	Sean Paul <seanpaul@chromium.org>,
	Rajesh Yadav <ryadav@codeaurora.org>,
	Stephen Boyd <swboyd@chromium.org>,
	Jeykumar Sankaran <jsanka@codeaurora.org>,
	linux-arm-msm <linux-arm-msm@vger.kernel.org>,
	dri-devel <dri-devel@lists.freedesktop.org>,
	freedreno <freedreno@lists.freedesktop.org>,
	devicetree@vger.kernel.org, LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v2 3/7] drm/msm/dsi: 28nm 8960 PHY: Get ref clock from the DT
Date: Fri, 30 Nov 2018 14:32:38 -0800	[thread overview]
Message-ID: <20181130223238.GD22824@google.com> (raw)
In-Reply-To: <CAD=FV=X5r1CCSeTDXy_cYOBDf4ExNe276pFQSC6T+WWg2=SchA@mail.gmail.com>

On Tue, Nov 27, 2018 at 10:00:50PM -0800, Doug Anderson wrote:
> Hi,
> 
> On Mon, Nov 26, 2018 at 3:12 PM Matthias Kaehlcke <mka@chromium.org> wrote:
> > @@ -409,8 +410,9 @@ static void dsi_pll_28nm_destroy(struct msm_dsi_pll *pll)
> >  static int pll_28nm_register(struct dsi_pll_28nm *pll_28nm)
> >  {
> >         char *clk_name, *parent_name, *vco_name;
> > +       const char *ref_clk_name = __clk_get_name(pll_28nm->vco_ref_clk);
> 
> IMO for the 28nm PHY driver you should probably make things work OK
> even if the "ref" clock wasn't supplied.  In the spirit of the stable
> device tree it would be nice (even if nobody actually ships device
> trees separate from kernels).  ...and also it makes the whole thing
> easier to land.  If you add compatibility here then the code and
> device tree patch can go in separately.

Ok, I'll make it fall back to the 'default' values if the ref clock is
not specified.

  reply	other threads:[~2018-11-30 22:32 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-11-26 23:11 [PATCH v2 0/7] drm/msm/dsi: Get PHY ref clocks from the DT Matthias Kaehlcke
2018-11-26 23:11 ` [PATCH v2 1/7] dt-bindings: msm/dsi: Add ref clock for PHYs Matthias Kaehlcke
2018-11-28  5:41   ` Doug Anderson
     [not found]     ` <CAD=FV=WvXFpZDJGbdvvY=HL_=tDWyhKpTg7zu8s=gUuJgK1ebg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2018-11-30 22:16       ` Matthias Kaehlcke
     [not found] ` <20181126231159.122298-1-mka-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
2018-11-26 23:11   ` [PATCH v2 2/7] drm/msm/dsi: 14nm PHY: Get ref clock from the DT Matthias Kaehlcke
2018-11-28  5:56     ` Doug Anderson
2018-11-30 22:18       ` Matthias Kaehlcke
2018-11-26 23:11   ` [PATCH v2 3/7] drm/msm/dsi: 28nm 8960 " Matthias Kaehlcke
     [not found]     ` <20181126231159.122298-4-mka-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
2018-11-28  6:00       ` Doug Anderson
2018-11-30 22:32         ` Matthias Kaehlcke [this message]
2018-11-26 23:11   ` [PATCH v2 5/7] drm/msm/dsi: 28nm " Matthias Kaehlcke
     [not found]     ` <20181126231159.122298-6-mka-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
2018-11-28  6:18       ` Doug Anderson
2018-11-26 23:11   ` [PATCH v2 7/7] drm/msm/dsi: 10nm " Matthias Kaehlcke
2018-11-28  6:13     ` Doug Anderson
2018-11-26 23:11 ` [PATCH v2 4/7] arm64: dts: qcom: msm8916: Set 'xo_board' as ref clock of the DSI PHY Matthias Kaehlcke
     [not found]   ` <20181126231159.122298-5-mka-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
2018-11-28  6:10     ` Doug Anderson
2018-11-26 23:11 ` [PATCH v2 6/7] arm64: dts: sdm845: Set 'bi_tcxo' as ref clock of the DSI PHYs Matthias Kaehlcke
2018-11-28  6:12   ` Doug Anderson

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