Re: [PATCH v2 1/2] gpio / CrystalCove: support virtual GPIO

From: Linus Walleij
Date: Thu Sep 25 2014 - 09:16:33 EST

On Thu, Sep 25, 2014 at 4:57 AM, Aaron Lu <> wrote:

> The virtual GPIO introduced in ACPI table of Baytrail-T based system is
> used to solve a problem under Windows. We do not have such problems
> under Linux so we do not actually need them. But we have to tell GPIO
> library that the Crystal Cove GPIO chip has this many GPIO pins or the
> common GPIO handler will refuse any access to those high number GPIO
> pins, which will resulted in a failure evaluation of every ACPI control
> method that is used to turn on/off power resource and/or report sensor
> temperatures.
> Signed-off-by: Aaron Lu <>
> ---
> v2: remove the hunk to increase NR_GPIO to 512.

Patch applied with Mika's ACK, also renumbered 0x5e to 94.

Linus Walleij
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