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SubjectRe: [PATCH v5 80/80] ARM: dts: bcm2711: Enable the display pipeline
On Thu, Sep 03, 2020 at 10:01:52AM +0200, Maxime Ripard wrote:
> Now that all the drivers have been adjusted for it, let's bring in the
> necessary device tree changes.
>
> The VEC and PV3 are left out for now, since it will require a more specific
> clock setup.
>
> Reviewed-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
> Tested-by: Chanwoo Choi <cw00.choi@samsung.com>
> Tested-by: Hoegeun Kwon <hoegeun.kwon@samsung.com>
> Tested-by: Stefan Wahren <stefan.wahren@i2se.com>
> Signed-off-by: Maxime Ripard <maxime@cerno.tech>

Apologies if this has already been reported or have a solution but this
patch (and presumably series) breaks output to the serial console after
a certain point during init. On Raspbian, I see systemd startup messages
then the output just turns into complete garbage. It looks like this
patch is merged first in linux-next, which is why my bisect fell on the
DRM merge. I am happy to provide whatever information could be helpful
for debugging this. I am on the latest version of the firmware
(currently 26620cc9a63c6cb9965374d509479b4ee2c30241).

$ git bisect log
# bad: [49e7e3e905e437a02782019570f70997e2da9101] Add linux-next specific files for 20200929
# good: [fb0155a09b0224a7147cb07a4ce6034c8d29667f] Merge tag 'nfs-for-5.9-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
git bisect start '49e7e3e905e437a02782019570f70997e2da9101' 'fb0155a09b0224a7147cb07a4ce6034c8d29667f'
# good: [a07bf9042465c0e4ab28947daf70517f99ef021f] Merge remote-tracking branch 'bluetooth/master' into master
git bisect good a07bf9042465c0e4ab28947daf70517f99ef021f
# bad: [546d06883722dfc5823d53042b924f4b4f76a459] Merge remote-tracking branch 'spi/for-next' into master
git bisect bad 546d06883722dfc5823d53042b924f4b4f76a459
# good: [06c14f5c2d311100a447caf60ecbcf558e4e60fe] Merge tag 'mediatek-drm-next-5.10' of https://git.kernel.org/pub/scm/linux/kernel/git/chunkuang.hu/linux into drm-next
git bisect good 06c14f5c2d311100a447caf60ecbcf558e4e60fe
# bad: [606865c11f2ed6429c7eddcbc59d3295771d41a4] Merge remote-tracking branch 'sound-asoc/for-next' into master
git bisect bad 606865c11f2ed6429c7eddcbc59d3295771d41a4
# bad: [7492f2f52acc72a1d08ad1f1d722237ba66189b9] Merge remote-tracking branch 'regmap/for-next' into master
git bisect bad 7492f2f52acc72a1d08ad1f1d722237ba66189b9
# good: [0b7e44d39c8aa7536352b57af2265e92fc253e4f] integrity: Asymmetric digsig supports SM2-with-SM3 algorithm
git bisect good 0b7e44d39c8aa7536352b57af2265e92fc253e4f
# good: [2ce595ba1cd7a2bc053fcc937b7bbbf743c21818] Merge remote-tracking branch 'nand/nand/next' into master
git bisect good 2ce595ba1cd7a2bc053fcc937b7bbbf743c21818
# good: [10e07ca312548f90d5e0fc1d862209285c9a858c] gpu/drm/radeon: fix spelling typo in comments
git bisect good 10e07ca312548f90d5e0fc1d862209285c9a858c
# bad: [be877462417f05af69729a9eeda1332b15e81de8] Merge remote-tracking branch 'imx-drm/imx-drm/next' into master
git bisect bad be877462417f05af69729a9eeda1332b15e81de8
# bad: [7a80fa2ada067aa633a91bce67f6c3e39aad7504] Merge remote-tracking branch 'drm-intel/for-linux-next' into master
git bisect bad 7a80fa2ada067aa633a91bce67f6c3e39aad7504
# good: [f4a336053725b689a65021edca26f8d058c0d6b4] drm/amdgpu/display: fix CFLAGS setup for DCN30
git bisect good f4a336053725b689a65021edca26f8d058c0d6b4
# bad: [64e05a0ebd7e6047c9f67c685fe8d4ec79a397ba] Merge remote-tracking branch 'drm/drm-next' into master
git bisect bad 64e05a0ebd7e6047c9f67c685fe8d4ec79a397ba
# good: [a4b0c1f80de8ec3f473b02918556650b683f044d] Merge remote-tracking branch 'crypto/master' into master
git bisect good a4b0c1f80de8ec3f473b02918556650b683f044d
# first bad commit: [64e05a0ebd7e6047c9f67c685fe8d4ec79a397ba] Merge remote-tracking branch 'drm/drm-next' into master

Cheers,
Nathan

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