From: Russell King - ARM Linux <linux@arm.linux.org.uk>
To: Philipp Zabel <p.zabel@pengutronix.de>
Cc: devel@driverdev.osuosl.org,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org,
kernel@pengutronix.de
Subject: Re: [PATCH 0/7] Reorder i.MX IPU display enable/disable sequence
Date: Mon, 14 Apr 2014 20:57:18 +0100 [thread overview]
Message-ID: <20140414195718.GK24070@n2100.arm.linux.org.uk> (raw)
In-Reply-To: <1397488895-17930-1-git-send-email-p.zabel@pengutronix.de>
On Mon, Apr 14, 2014 at 05:21:28PM +0200, Philipp Zabel wrote:
> Repeatedly enabling and disabling the display currently can lead to a state
> in which the IPU doesn't produce a valid signal anymore because we disable
> IPU submodules before they can finish their interaction.
Well done at finding the cause of this - I've encounted this several
times, while testing imx-hdmi and it's good that it should hopefully
be fixed!
--
FTTC broadband for 0.8mile line: now at 9.7Mbps down 460kbps up... slowly
improving, and getting towards what was expected from it.
next prev parent reply other threads:[~2014-04-14 19:58 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-04-14 15:21 Philipp Zabel
2014-04-14 15:21 ` [PATCH 1/7] imx-drm: ipu-common: add ipu_map_irq to request non-IDMAC interrupts Philipp Zabel
2014-04-14 15:21 ` [PATCH 2/7] imx-drm: ipu-common: Add helpers to check for a busy IDMAC channel and to busywait for an interrupt Philipp Zabel
2014-04-14 15:21 ` [PATCH 3/7] imx-drm: ipu-dmfc: Wait for FIFOs to run empty before disabling Philipp Zabel
2014-04-14 15:21 ` [PATCH 4/7] imx-drm: ipu-dc: Wait for DC_FC_1 / DP_SF_END interrupt Philipp Zabel
2014-04-14 21:45 ` Russell King - ARM Linux
2014-04-14 15:21 ` [PATCH 5/7] imx-drm: ipu-dp: Split disabling the DP foreground channel from disabling the DP module Philipp Zabel
2014-04-14 15:21 ` [PATCH 6/7] imx-drm: imx-dp: When disabling the DP foreground channel, wait until the DP background channel is finished before disabling the IDMAC channel Philipp Zabel
2014-04-14 15:21 ` [PATCH 7/7] imx-drm: ipuv3-crtc: Change display enable/disable order Philipp Zabel
2014-04-14 19:57 ` Russell King - ARM Linux [this message]
2014-04-14 21:31 ` [PATCH 0/7] Reorder i.MX IPU display enable/disable sequence Russell King - ARM Linux
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