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Subject: Re: [PATCH 01/32] arm64: Add platform selection for BCM2835.
From: Gerd Hoffmann <kraxel@redhat.com>
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> There is no need to add ARCH_BCM though?

There are Makefile(s) with

obj-$(CONFIG_ARCH_BCM)          += bcm/

in drivers/pinctrl for example, maybe more, didn't check the whole tree.

So without ARCH_BCM some drivers are dropped from the build ...

cheers,
  Gerd