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Date: Wed, 19 Aug 2020 19:01:46 -0700 From: John Stultz <john.stultz@...aro.org> To: Mauro Carvalho Chehab <mchehab+huawei@...nel.org> Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, linuxarm@...wei.com, mauro.chehab@...wei.com, Manivannan Sadhasivam <mani@...nel.org>, Daniel Vetter <daniel@...ll.ch>, dri-devel <dri-devel@...ts.freedesktop.org>, Bogdan Togorean <bogdan.togorean@...log.com>, Liwei Cai <cailiwei@...ilicon.com>, linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>, Daniel Borkmann <daniel@...earbox.net>, Rob Herring <robh+dt@...nel.org>, "David S. Miller" <davem@...emloft.net>, Xinliang Liu <xinliang.liu@...aro.org>, Neil Armstrong <narmstrong@...libre.com>, Wanchun Zheng <zhengwanchun@...ilicon.com>, driverdevel <devel@...verdev.osuosl.org>, BPF Mailing List <bpf@...r.kernel.org>, linux-media <linux-media@...r.kernel.org>, Tomi Valkeinen <tomi.valkeinen@...com>, Jesper Dangaard Brouer <hawk@...nel.org>, Laurent Pinchart <laurent.pinchart@...asonboard.com>, Xinwei Kong <kong.kongxinwei@...ilicon.com>, Alexei Starovoitov <ast@...nel.org>, "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" <devicetree@...r.kernel.org>, Rob Clark <robdclark@...omium.org>, Laurentiu Palcu <laurentiu.palcu@....com>, Andrzej Hajda <a.hajda@...sung.com>, John Fastabend <john.fastabend@...il.com>, Liuyao An <anliuyao@...wei.com>, "moderated list:DMA BUFFER SHARING FRAMEWORK" <linaro-mm-sig@...ts.linaro.org>, Wei Xu <xuwei5@...ilicon.com>, Rongrong Zou <zourongrong@...il.com>, Philipp Zabel <p.zabel@...gutronix.de>, Sam Ravnborg <sam@...nborg.org>, Network Development <netdev@...r.kernel.org>, Sumit Semwal <sumit.semwal@...aro.org>, lkml <linux-kernel@...r.kernel.org>, Jakub Kicinski <kuba@...nel.org>, David Airlie <airlied@...ux.ie>, Chen Feng <puck.chen@...ilicon.com> Subject: Re: [PATCH 00/49] DRM driver for Hikey 970 On Wed, Aug 19, 2020 at 2:36 PM John Stultz <john.stultz@...aro.org> wrote: > > On Wed, Aug 19, 2020 at 4:46 AM Mauro Carvalho Chehab > <mchehab+huawei@...nel.org> wrote: > > So, IMO, the best is to keep it on staging for a while, until those > > remaining bugs gets solved. > > > > I added this series, together with the regulator driver and > > a few other patches (including a hack to fix a Kernel 5.8 > > regression at WiFi ) at: > > > > https://gitlab.freedesktop.org/mchehab_kernel/hikey-970/-/commits/master > > Sorry, one more small request: Could you create a branch that only has > the DRM driver changes in it? > > The reason I ask, is that since the HiKey960 isn't affected by the > majority of the problems you listed as motivation for going through > staging. So if we can validate that your tree works fine on HiKey960, > the series can be cleaned up and submitted properly upstream to enable > that SoC, and the outstanding 970 issues can be worked out afterwards > against mainline. Just as a heads up, I tried testing your tree with my HiKey960, and after fixing the compat string inconsistency, the drivers seem to load properly. However the drm_hwcomposer seems to have some trouble with the driver: 01-01 00:12:41.456 345 345 E hwc-drm-display-compositor: Commit test failed for display 0, FIXME 01-01 00:12:41.456 345 345 E hwc-drm-two: Failed to apply the frame composition ret=-22 01-01 00:12:41.456 351 351 E HWComposer: presentAndGetReleaseFences: present failed for display 0: BadParameter (4) I'll dig in a bit further as to why, but wanted to give you a heads up. thanks -john
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