[PATCH V3 2/5] dts/imx6q-b850v3: Configure IPU assignment order
From: l.stach@pengutronix.de (Lucas Stach)
Date: 2016-08-01 08:55:33
Also in:
dri-devel, linux-devicetree, lkml
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 <redacted> Cc: Philipp Zabel <p.zabel@pengutronix.de> Cc: Rob Herring <robh@kernel.org> Cc: Fabio Estevam <redacted> Signed-off-by: Peter Senna Tschudin <redacted>
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
quoted hunk ↗ jump to hunk
--- 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 {