Re: [PATCH] arm64: dts: qcom: glymur-crd: Mark L4C regulator as boot-on to save power

From: Abel Vesa

Date: Fri Oct 09 2026 - 15:38:31 EST


On 26-10-09 17:36:05, Kamal Wadhwa wrote:
> On current Glymur Rev-1 boards, the third USB controller and PHY are
> not enabled, so the L4C regulator has no active consumers. The
> regulator node cannot be removed, however, since Rev-2 boards will
> enable the corresponding USB hardware.
>
> This rail may have been left enabled by the bootloader. The RPMH
> regulator driver cannot query real hardware state, so without
> regulator-boot-on the core assumes the rail is already off and never
> issues an explicit disable during late cleanup, leaving it enabled
> indefinitely while unused.
>
> Add regulator-boot-on so the core knows to explicitly disable the
> rail during late cleanup when no consumers are present.
>
> Signed-off-by: Kamal Wadhwa <kamal.wadhwa@xxxxxxxxxxxxxxxx>

Reviewed-by: Abel Vesa <abel.vesa@xxxxxxxxxxxxxxxx>