Messages in this thread | | | From | Andy Shevchenko <> | Date | Thu, 13 Jan 2022 20:19:40 +0200 | Subject | Re: [PATCH v6 07/10] hda: cs35l41: Add support for CS35L41 in HDA systems |
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On Thu, Jan 13, 2022 at 8:13 PM Andy Shevchenko <andy.shevchenko@gmail.com> wrote: > On Thu, Jan 13, 2022 at 6:53 PM Lucas tanure > <tanureal@opensource.cirrus.com> wrote: > > On 1/6/22 12:29, Andy Shevchenko wrote: > > > On Fri, Dec 17, 2021 at 5:45 PM Lucas Tanure > > > <tanureal@opensource.cirrus.com> wrote:
...
> > >> + * Device CLSA0100 doesn't have _DSD so a gpiod_get by the label reset won't work. > > > > > > So, you need to add mapping tables and switch to regular APIs, tell > > > me, why it won't work.
> > The part about how the driver access the ACPI table is going to be > > improved later if possible. > > The laptop has already shipped and doesn't have a _DSD node, so the > > driver needs to read the reset GPIO from a hard coded index inside a > > node that contains more than one cs35l41. > > We have a lot of cases like this, hint: `git grep -n -w > devm_acpi_dev_add_driver_gpios`.
It's all described here: Documentation/firmware-guide/acpi/gpio-properties.rst
-- With Best Regards, Andy Shevchenko
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