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SubjectRe: [PATCH RFC 4/6] ARM: dts: msm8974: add display support
On Mon, May 06, 2019 at 11:39:02PM -0700, Bjorn Andersson wrote:
> On Sun 05 May 06:04 PDT 2019, Brian Masney wrote:
> > diff --git a/arch/arm/boot/dts/qcom-msm8974.dtsi b/arch/arm/boot/dts/qcom-msm8974.dtsi
> [..]
> > + clocks = <&mmcc MDSS_MDP_CLK>,
> > + <&mmcc MDSS_AHB_CLK>,
> > + <&mmcc MDSS_AXI_CLK>,
> > + <&mmcc MDSS_BYTE0_CLK>,
> > + <&mmcc MDSS_PCLK0_CLK>,
> > + <&mmcc MDSS_ESC0_CLK>,
> > + <&mmcc MMSS_MISC_AHB_CLK>;
> > + clock-names = "mdp_core",
> > + "iface",
> > + "bus",
> > + "byte",
> > + "pixel",
> > + "core",
> > + "core_mmss";
>
> Unless I enable MMSS_MMSSNOC_AXI_CLK and MMSS_S0_AXI_CLK I get some
> underrun error from DSI. You don't see anything like this?
>
> (These clocks are controlled by msm_bus downstream and should be driven
> by interconnect upstream)
>
>
> Apart from this, I think this looks nice. Happy to see the progress.

No, I'm not seeing an underrun errors from the DSI. I think the clocks
are fine since I'm able to get this working with 4.17 using these same
clocks. I just sent out v2 and the cover letter has some details, along
with the full dmesg.

Brian

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