From mboxrd@z Thu Jan 1 00:00:00 1970 From: Laurent Pinchart Date: Wed, 13 May 2015 21:56:20 +0000 Subject: Re: [Bug Report] DU: Error messages at boot log and can't show image on RGB Display. Message-Id: <1784861.2EDxqCpMCH@avalon> List-Id: References: <5552F298.2020201@jinso.co.jp> In-Reply-To: <5552F298.2020201@jinso.co.jp> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-sh@vger.kernel.org Hello, On Wednesday 13 May 2015 15:43:36 Cao Minh Hiep wrote: > Hi All. > > We are testing Linux upstream version-4.1-rc2 on Lager. > We found a Error message of DU(Display Unit) at boot logs: > The Warning messages is showed as below: > "rcar-du feb00000.display: encoder initialization failed, skipping" > Then we tried to show a .bmp image on RGB Display via RGB port. But it > didn't work. > > Testing method: > 1. Connect RGB Display to RGB port on Lager. > 2. Show a BMP image on Display by this command: > # bmap /dev/fb0 ./image.bmp > > We'd like to report this problem first. > There are no error message at version v4.0 stable. > And showed the image on RGB Display normally at version v4.0 stable. > We are looking for the error patch that added between v4.0 and v4.1-rc2. I've tried v4.1-rc2 and haven't experienced that problem. It might be related to kernel configuration, could you please share your .config file ? -- Regards, Laurent Pinchart