[PATCH v2] power: supply: macsmc: Support macOS 27 SMC firmware

Joshua Peisach jpeisach at ubuntu.com
Fri Jun 12 12:53:27 PDT 2026


On Fri Jun 12, 2026 at 2:36 PM EDT, Sasha Finkelstein wrote:
> The SMC firmware included in macOS 27 changed the size of BCF0 key from
> 4 to 1 bytes. This key is used for indicating that battery state is
> critically low.
>
> Reviewed-by: Sven Peter <sven at kernel.org>
> Signed-off-by: Sasha Finkelstein <k at chaosmail.tech>
> ---
> Changes in v2:
> - Addressing review feedback
> - Link to v1: https://patch.msgid.link/20260611-gate-power-v1-1-8a62721086c7@chaosmail.tech
> ---
>  drivers/power/supply/macsmc-power.c | 35 ++++++++++++++++++++++++++++++++---
>  1 file changed, 32 insertions(+), 3 deletions(-)
>

Reviewed-by: Joshua Peisach <jpeisach at ubuntu.com>



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