linux-kernel - Re: [PATCH] drm/msm/dpu: fix x1e80100 intf

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Message-ID: <ZzdKBMRKs2MgLGon@hovoldconsulting.com>
Date: Fri, 15 Nov 2024 14:17:56 +0100
From: Johan Hovold <johan@...nel.org>
To: Stephan Gerhold <stephan.gerhold@...aro.org>
Cc: Rob Clark <robdclark@...il.com>,
	Abhinav Kumar <quic_abhinavk@...cinc.com>,
	Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
	Sean Paul <sean@...rly.run>,
	Marijn Suijten <marijn.suijten@...ainline.org>,
	David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
	Abel Vesa <abel.vesa@...aro.org>, linux-arm-msm@...r.kernel.org,
	dri-devel@...ts.freedesktop.org, freedreno@...ts.freedesktop.org,
	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Subject: Re: [PATCH] drm/msm/dpu: fix x1e80100 intf_6 underrun/vsync interrupt

On Fri, Nov 15, 2024 at 01:55:13PM +0100, Stephan Gerhold wrote:
> The IRQ indexes for the intf_6 underrun/vsync interrupts are swapped.
> DPU_IRQ_IDX(MDP_SSPP_TOP0_INTR, 16) is the actual underrun interrupt and
> DPU_IRQ_IDX(MDP_SSPP_TOP0_INTR, 17) is the vsync interrupt.
> 
> This causes timeout errors when using the DP2 controller, e.g.
>   [dpu error]enc37 frame done timeout
>   *ERROR* irq timeout id=37, intf_mode=INTF_MODE_VIDEO intf=6 wb=-1, pp=2, intr=0
>   *ERROR* wait disable failed: id:37 intf:6 ret:-110
> 
> Correct them to fix these errors and make DP2 work properly.
> 
> Cc: stable@...r.kernel.org
> Fixes: e3b1f369db5a ("drm/msm/dpu: Add X1E80100 support")
> Signed-off-by: Stephan Gerhold <stephan.gerhold@...aro.org>

This fixes the errors I was seeing with the third usb-c port on the
x1e80100 CRD:

Tested-by: Johan Hovold <johan+linaro@...nel.org>

Johan