Hi Frank,

Missatge de Frank Wunderlich <fran...@public-files.de> del dia dl., 17
d’ag. 2020 a les 16:48:
>
> Hi
>
> at least my Bananapi R2/R64 does not bootup (no output on serial console) 
> with 5.9-rc1
>
> made a bisect which points me to this commit:
>
> commit f97dbf48ca43009e8b8bcdf07f47fc9f06149b36
> Author: Saravana Kannan <sarava...@google.com>
> Date:   Fri Jul 17 17:06:36 2020 -0700
>
>     irqchip/mtk-sysirq: Convert to a platform driver
>
>     This driver can work as a platform driver. So covert it to a platform
>     driver.
>
>     Signed-off-by: Saravana Kannan <sarava...@google.com>
>     Signed-off-by: Marc Zyngier <m...@kernel.org>
>     Reviewed-by: Hanks Chen <hanks.c...@mediatek.com>
>     Link: 
> https://lore.kernel.org/r/20200718000637.3632841-4-sarava...@google.com
>

Looks like all Mediatek devices are broken, you should try if this [1]
fixes the issue for you. It fixes for me.

[1] 
https://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git/commit/?h=irq/irqchip-next&id=7828a3ef8646fb2e69ed45616c8453a037ca7867

Cheers,
 Enric

>  drivers/irqchip/irq-mtk-sysirq.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
>
> at least on my devices i got 5.9 working by reverting the commit, will send a 
> revert-Patch
>
> $ git bisect log
> git bisect start
> # bad: [d24b5abc4640b46bb356bb5371d244866a5fe0a3] gitignore: add from 5.8 + 
> itb/mod
> git bisect bad d24b5abc4640b46bb356bb5371d244866a5fe0a3
> # good: [bcf876870b95592b52519ed4aafcf9d95999bc9c] Linux 5.8
> git bisect good bcf876870b95592b52519ed4aafcf9d95999bc9c
> # bad: [8186749621ed6b8fc42644c399e8c755a2b6f630] Merge tag 
> 'drm-next-2020-08-06' of git://anongit.freedesktop.org/drm/drm
> git bisect bad 8186749621ed6b8fc42644c399e8c755a2b6f630
> # bad: [2324d50d051ec0f14a548e78554fb02513d6dcef] Merge tag 'docs-5.9' of 
> git://git.lwn.net/linux
> git bisect bad 2324d50d051ec0f14a548e78554fb02513d6dcef
> # good: [92c59e126b21fd212195358a0d296e787e444087] Merge tag 
> 'arm-defconfig-5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
> git bisect good 92c59e126b21fd212195358a0d296e787e444087
> # good: [d4db4e553249eda9016fab2e363c26e52c47926f] Merge tag 'arm-newsoc-5.9' 
> of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
> git bisect good d4db4e553249eda9016fab2e363c26e52c47926f
> # good: [fd76a74d940ae3d6b8b2395cd12914630c7e1739] Merge tag 
> 'audit-pr-20200803' of 
> git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit
> git bisect good fd76a74d940ae3d6b8b2395cd12914630c7e1739
> # bad: [95ffa676583b23baed40861d30b65fe31397da00] Merge branch 'parisc-5.9-1' 
> of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
> git bisect bad 95ffa676583b23baed40861d30b65fe31397da00
> # bad: [f8b036a7fc231fe6e8297daddee5dffdbbf2581f] Merge tag 
> 'irq-core-2020-08-04' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
> git bisect bad f8b036a7fc231fe6e8297daddee5dffdbbf2581f
> # good: [4f30a60aa78410496e5ffe632a371c00f0d83a8d] Merge tag 
> 'close-range-v5.9' of 
> git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux
> git bisect good 4f30a60aa78410496e5ffe632a371c00f0d83a8d
> # good: [8d16f5b979660c0fdcfa21a418cc03f1fde60cf7] genirq: Export 
> irq_chip_retrigger_hierarchy and irq_chip_set_vcpu_affinity_parent
> git bisect good 8d16f5b979660c0fdcfa21a418cc03f1fde60cf7
> # bad: [c9c73a05413ea4a465cae1cb3593b01b190a233f] irqchip/loongson-liointc: 
> Fix misuse of gc->mask_cache
> git bisect bad c9c73a05413ea4a465cae1cb3593b01b190a233f
> # bad: [f97dbf48ca43009e8b8bcdf07f47fc9f06149b36] irqchip/mtk-sysirq: Convert 
> to a platform driver
> git bisect bad f97dbf48ca43009e8b8bcdf07f47fc9f06149b36
> # bad: [f97dbf48ca43009e8b8bcdf07f47fc9f06149b36] irqchip/mtk-sysirq: Convert 
> to a platform driver
> git bisect bad f97dbf48ca43009e8b8bcdf07f47fc9f06149b36 //needs change from 
> 762a21fd45e0 as build-fix
> # good: [3af9571cd585efafc2facbd8dbd407317ff898cf] irqchip/gic-v4.1: Ensure 
> accessing the correct RD when writing INVALLR
> git bisect good 3af9571cd585efafc2facbd8dbd407317ff898cf
> # good: [f8410e626569324cfe831aaecc0504cafc12b471] irqchip: Add 
> IRQCHIP_PLATFORM_DRIVER_BEGIN/END and IRQCHIP_MATCH helper macros
> git bisect good f8410e626569324cfe831aaecc0504cafc12b471
> # good: [5be57099d44550d2c4cf44a86c44df87edb79a57] irqchip/qcom-pdc: Switch 
> to using IRQCHIP_PLATFORM_DRIVER helper macros
> git bisect good 5be57099d44550d2c4cf44a86c44df87edb79a57
> # first bad commit: [f97dbf48ca43009e8b8bcdf07f47fc9f06149b36] 
> irqchip/mtk-sysirq: Convert to a platform driver
>
> regards Frank
>

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