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Date:   Thu, 22 Jul 2021 18:45:40 +0300
From:   Andy Shevchenko <>
To:     Greg Kroah-Hartman <>,,
Cc:     Jiri Slaby <>, Dennis Giaya <>
Subject: Re: [PATCH v1 1/1] serial: max310x: Use clock-names property
 matching to recognize XTAL

On Thu, Jul 22, 2021 at 06:02:33PM +0300, Andy Shevchenko wrote:
> Dennis reported that on ACPI-based systems the clock frequency
> isn't enough to configure device properly. We have to respect
> the clock source as well. To achieve this match the clock-names
> property against "xtal" to recognize crystal connection.

Dennis, please test this.


> -	s->clk = devm_clk_get_optional(dev, "osc");
> +	xtal = device_property_match_string(dev, "clock-names", "xtal") >= 0;

Meanwhile I will change this (not affects the testing in your case) to actually
negative one as:

	..., "osc") < 0;

to be compatible with the original flow (in case there are two clock names, the
"osc" has a priority).

With Best Regards,
Andy Shevchenko

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