From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752050AbcHAIzd (ORCPT ); Mon, 1 Aug 2016 04:55:33 -0400 Received: from metis.ext.4.pengutronix.de ([92.198.50.35]:57833 "EHLO metis.ext.4.pengutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750954AbcHAIzc (ORCPT ); Mon, 1 Aug 2016 04:55:32 -0400 Message-ID: <1470041647.6640.3.camel@pengutronix.de> Subject: Re: [PATCH V3 2/5] dts/imx6q-b850v3: Configure IPU assignment order From: Lucas Stach To: Peter Senna Tschudin Cc: robh+dt@kernel.org, mark.rutland@arm.com, shawnguo@kernel.org, kernel@pengutronix.de, fabio.estevam@nxp.com, linux@armlinux.org.uk, airlied@linux.ie, p.zabel@pengutronix.de, davem@davemloft.net, geert@linux-m68k.org, gregkh@linuxfoundation.org, akpm@linux-foundation.org, mchehab@kernel.org, linux@roeck-us.net, treding@nvidia.com, architt@codeaurora.org, ykk@rock-chips.com, andrey.gusakov@cogentembedded.com, boris.brezillon@free-electrons.com, enric.balletbo@collabora.com, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, dri-devel@lists.freedesktop.org, Rob Herring Date: Mon, 01 Aug 2016 10:54:07 +0200 In-Reply-To: <7e5985c0b25505eeaf50294ea04ed750c6c0f576.1469993472.git.peter.senna@collabora.com> References: <1464626385-19253-1-git-send-email-peter.senna@collabora.com> <7e5985c0b25505eeaf50294ea04ed750c6c0f576.1469993472.git.peter.senna@collabora.com> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.12.9-1+b1 Mime-Version: 1.0 Content-Transfer-Encoding: 7bit X-SA-Exim-Connect-IP: 2001:67c:670:100:fa0f:41ff:fe58:4010 X-SA-Exim-Mail-From: l.stach@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-kernel@vger.kernel.org Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Am Sonntag, den 31.07.2016, 21:55 +0200 schrieb Peter Senna Tschudin: > As the IPU has combined limitations across multiple crtcs, and as that > can't be communicated to userspace at the moment, reorder the crtcs to > allow support to two Full-HD monitors by avoiding assigning two > monitors to a single IPU. > > Cc: Enric Balletbo i Serra > Cc: Philipp Zabel > Cc: Rob Herring > Cc: Fabio Estevam > Signed-off-by: Peter Senna Tschudin NACK. This is a userspace issue. Changing the assignment order of the CRTCs just shifts the failure to a userspace that want to use CRTC 0 and 2 now. imx-drm just got atomic support and with the atomic check it should be possible to inform userspace in a reasonable way about such issues. Regards, Lucas > --- > Unchanged from V2. > > Changes from V1: > - New commit message > > arch/arm/boot/dts/imx6q-b850v3.dts | 5 +++++ > 1 file changed, 5 insertions(+) > > diff --git a/arch/arm/boot/dts/imx6q-b850v3.dts b/arch/arm/boot/dts/imx6q-b850v3.dts > index 167f744..88a70de 100644 > --- a/arch/arm/boot/dts/imx6q-b850v3.dts > +++ b/arch/arm/boot/dts/imx6q-b850v3.dts > @@ -51,6 +51,11 @@ > chosen { > stdout-path = &uart3; > }; > + > + display-subsystem { > + compatible = "fsl,imx-display-subsystem"; > + ports = <&ipu1_di0>, <&ipu2_di0>, <&ipu1_di1>, <&ipu2_di1>; > + }; > }; > > &clks {