From mboxrd@z Thu Jan 1 00:00:00 1970 From: l.stach@pengutronix.de (Lucas Stach) Date: Mon, 01 Aug 2016 10:54:07 +0200 Subject: [PATCH V3 2/5] dts/imx6q-b850v3: Configure IPU assignment order 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> Message-ID: <1470041647.6640.3.camel@pengutronix.de> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.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 {