[PATCH] arm64: dts: ulcb: Enable display output

[PATCH] arm64: dts: ulcb: Enable display output

[Laurent Pinchart]

The DU is already wired up to the HDMI encoder, all we need to do is
enable it.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
---
 arch/arm64/boot/dts/renesas/ulcb.dtsi | 4 ++++
 1 file changed, 4 insertions(+)

This patch has been tested on the M3-W ULCB in Magnus' board farm. As no
display is connected to the HDMI output testing was limited, to probing the
device and verifying that it can be accessed from userspace.

Tests on the H3 ES1.1 and H3 ES2.0 ULCBs were less successful as I couldn't
get the boards to boot properly, but they failed without this patch as well,
so I don't think it should be a blocker.

diff --git a/arch/arm64/boot/dts/renesas/ulcb.dtsi b/arch/arm64/boot/dts/renesas/ulcb.dtsi
index 1b868df2393f..dfec9072718b 100644
--- a/arch/arm64/boot/dts/renesas/ulcb.dtsi
+++ b/arch/arm64/boot/dts/renesas/ulcb.dtsi
@@ -157,6 +157,10 @@
 	};
 };
 
+&du {
+	status = "okay";
+};
+
 &ehci1 {
 	status = "okay";
 };
-- 
Regards,

Laurent Pinchart

Re: [PATCH] arm64: dts: ulcb: Enable display output

[Simon Horman]

On Tue, Aug 22, 2017 at 05:23:26PM +0300, Laurent Pinchart wrote:
> The DU is already wired up to the HDMI encoder, all we need to do is
> enable it.
> 
> Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
> ---
>  arch/arm64/boot/dts/renesas/ulcb.dtsi | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> This patch has been tested on the M3-W ULCB in Magnus' board farm. As no
> display is connected to the HDMI output testing was limited, to probing the
> device and verifying that it can be accessed from userspace.
> 
> Tests on the H3 ES1.1 and H3 ES2.0 ULCBs were less successful as I couldn't
> get the boards to boot properly, but they failed without this patch as well,
> so I don't think it should be a blocker.

Thanks, applied.

Re: [PATCH] arm64: dts: ulcb: Enable display output

[Vladimir Barinov]

Hello,

On 30.08.2017 10:28, Simon Horman wrote:
> On Tue, Aug 22, 2017 at 05:23:26PM +0300, Laurent Pinchart wrote:
>> The DU is already wired up to the HDMI encoder, all we need to do is
>> enable it.
>>
>> Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
>> ---
>>   arch/arm64/boot/dts/renesas/ulcb.dtsi | 4 ++++
>>   1 file changed, 4 insertions(+)
>>
>> This patch has been tested on the M3-W ULCB in Magnus' board farm. As no
>> display is connected to the HDMI output testing was limited, to probing the
>> device and verifying that it can be accessed from userspace.
>>
>> Tests on the H3 ES1.1 and H3 ES2.0 ULCBs were less successful as I couldn't
>> get the boards to boot properly, but they failed without this patch as well,
>> so I don't think it should be a blocker.
> Thanks, applied.
Sorry for late reply.

This patch was verified with HDMI display on M3W and H3 ULCB boards with 
following patches applied:
https://patchwork.kernel.org/patch/9688551/
https://patchwork.kernel.org/patch/9831835/
https://patchwork.kernel.org/patch/9801239/