Hej,

On Thu, Jun 12, 2025 at 09:11:24PM +0000, Sven Peter wrote:

When support for Apple Silicon was originally upstreamed we somehow
started using `default ARCH_APPLE` for most drivers. arm64 defconfig
also contains ARCH_APPLE=y such that this will turn into `default y`
there by default which is neither what we want nor how this is usually
done.

It's not such an uncommon pattern. `git grep 'default ARCH_' --
'*Kconfig'` has over 250 matches (not counting ARCH_APPLE) and from a
cursory look not all CONFIG_* look essential for booting.
I agree that the drivers covered here should not be built-in by default.
An alternative would be using `default m if ARCH_APPLE` instead but that
pattern is not common in the kernel. So just moving this to defconfig is
fine by me.

Let's fix all that by dropping the default everywhere and adding the
drivers to defconfig as modules instead of built-ins.
None of these patches depend on each other so we can just take them all
independently through the respective subsystem trees.

Best,

Sven

Signed-off-by: Sven Peter <sven@kernel.org>
---
Sven Peter (11):
      pmdomain: apple: Drop default ARCH_APPLE in Kconfig
      soc: apple: Drop default ARCH_APPLE in Kconfig
      clk: apple-nco: Drop default ARCH_APPLE in Kconfig
      nvmem: apple: drop default ARCH_APPLE in Kconfig
      i2c: apple: Drop default ARCH_APPLE in Kconfig
      cpufreq: apple: drop default ARCH_APPLE in Kconfig
      iommu/apple-dart: Drop default ARCH_APPLE in Kconfig
      Input: apple_z2: Drop default ARCH_APPLE in Kconfig
      dmaengine: apple-admac: Drop default ARCH_APPLE in Kconfig
      ASoC: apple: mca: Drop default ARCH_APPLE in Kconfig
      arm64: defconfig: Enable Apple Silicon drivers

 arch/arm64/configs/defconfig      | 19 +++++++++++++++++++
 drivers/clk/Kconfig               |  1 -
 drivers/cpufreq/Kconfig.arm       |  1 -
 drivers/dma/Kconfig               |  1 -
 drivers/i2c/busses/Kconfig        |  1 -
 drivers/input/touchscreen/Kconfig |  1 -
 drivers/iommu/Kconfig             |  1 -
 drivers/nvmem/Kconfig             |  1 -
 drivers/pmdomain/apple/Kconfig    |  1 -
 drivers/soc/apple/Kconfig         |  3 ---
 sound/soc/apple/Kconfig           |  1 -
 11 files changed, 19 insertions(+), 12 deletions(-)

whole series

Reviewed-by: Janne Grunau <j@jannau.net>