lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Thu, 30 Apr 2015 08:44:49 -0700 From: Kevin Hilman <khilman@...nel.org> To: Krzysztof Kozlowski <k.kozlowski@...sung.com> Cc: linux-fbdev@...r.kernel.org, linux-samsung-soc@...r.kernel.org, Joonyoung Shim <jy0922.shim@...sung.com>, David Airlie <airlied@...ux.ie>, Jingoo Han <jg1.han@...sung.com>, Seung-Woo Kim <sw0312.kim@...sung.com>, linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org, Inki Dae <inki.dae@...sung.com>, Andrzej Hajda <a.hajda@...sung.com>, Kyungmin Park <kyungmin.park@...sung.com>, Kukjin Kim <kgene@...nel.org>, stable@...r.kernel.org, Olof Johansson <olof@...om.net>, Javier Martinez Canillas <javier.martinez@...labora.co.uk>, linux-arm-kernel@...ts.infradead.org, Marek Szyprowski <m.szyprowski@...sung.com> Subject: Re: [RFT PATCH] drm/exynos: Enable DP clock to fix display on Exynos5250 and other Krzysztof Kozlowski <k.kozlowski@...sung.com> writes: > 2015-04-30 2:31 GMT+09:00 Kevin Hilman <khilman@...nel.org>: >> Krzysztof Kozlowski <k.kozlowski@...sung.com> writes: >> >>> After adding display power domain for Exynos5250 in commit >>> 2d2c9a8d0a4f ("ARM: dts: add display power domain for exynos5250") the >>> display on Chromebook Snow and others stopped working after boot. >>> >>> The reason for this suggested Andrzej Hajda: the DP clock was disabled. >>> This clock is required by Display Port and is enabled by bootloader. >>> However when FIMD driver probing was deferred, the display power domain >>> was turned off. This effectively reset the value of DP clock enable >>> register. >>> >>> When exynos-dp is later probed, the clock is not enabled and display is >>> not properly configured: >>> >>> exynos-dp 145b0000.dp-controller: Timeout of video streamclk ok >>> exynos-dp 145b0000.dp-controller: unable to config video >>> >>> Signed-off-by: Krzysztof Kozlowski <k.kozlowski@...sung.com> >>> Reported-by: Javier Martinez Canillas <javier.martinez@...labora.co.uk> >>> Fixes: 2d2c9a8d0a4f ("ARM: dts: add display power domain for exynos5250") >>> Cc: <stable@...r.kernel.org> >>> >>> --- >>> >>> This should fix issue reported by Javier [1][2]. >>> >>> Tested on Chromebook Snow (Exynos 5250). More testing would be great, >>> especially on other Exynos 5xxx products. >> >> I hoped to try this on my exynos5 boards, but it doesn't seem to apply >> to linux-next or to Linus' master branch. >> >> Are there some other dependencies here? > > It is already applied: > https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=1c363c7cccf64128087002b0779986ad16aff6dc Er, yup. That would explain it. ;) Sorry for the noise, Kevin -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists