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2025-12-23soc: apple: Add hardware tunable supportSven Peter1-0/+62
Various hardware, like the Type-C PHY or the Thunderbolt/USB4 NHI, present on Apple SoCs need machine-specific tunables passed from our bootloader m1n1 to the device tree. Add generic helpers so that we don't have to duplicate this across multiple drivers. Reviewed-by: Alyssa Rosenzweig <alyssa@rosenzweig.io> Reviewed-by: Neal Gompa <neal@gompa.dev> Reviewed-by: Janne Grunau <j@jannau.net> Signed-off-by: Sven Peter <sven@kernel.org> Link: https://patch.msgid.link/20251214-b4-atcphy-v3-1-ba82b20e9459@kernel.org Signed-off-by: Vinod Koul <vkoul@kernel.org>