linux-kernel - Re: [PATCH] drivers: mfd: ti_am335x_tscadc: increase ADC ref clock to 24MHz

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Message-ID: <b7232421-10f7-2bac-0ad8-847804126bf2@ti.com>
Date:   Thu, 10 Nov 2016 10:37:12 +0530
From:   Vignesh R <vigneshr@...com>
To:     John Syne <john3909@...il.com>
CC:     Lee Jones <lee.jones@...aro.org>,
        "N, Mugunthan V" <mugunthanvnm@...com>,
        "linux-iio@...r.kernel.org" <linux-iio@...r.kernel.org>,
        Tony Lindgren <tony@...mide.com>,
        Jonathan Cameron <jic23@...nel.org>,
        "linux-omap@...r.kernel.org" <linux-omap@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "Nori, Sekhar" <nsekhar@...com>,
        "Ujfalusi, Peter" <peter.ujfalusi@...com>
Subject: Re: [PATCH] drivers: mfd: ti_am335x_tscadc: increase ADC ref clock to
 24MHz

Hi,

On Thursday 10 November 2016 05:23 AM, John Syne wrote:
> OK, then back to my original question. Given that these DT properties are supported in the driver
> 

Below properties are supported by only by ti_am3335x_adc driver and not
ti_am335x_tsc driver. As author of this patch pointed out in another
reply, there is no need to change step-opendelay for tsc. AFAIK, I don't
see a use case where these values needs to be tweaked for tsc channels,
therefore it does not make sense to be DT properties.

> shouldn’t the following be added to am33xx.dtsi and am4372.dtsi?

Its totally upto board dts files to allocate channels for tsc and adc.
So, how could these be added to dtsi files?

> ti,chan-step-avg = <0x16 0x16 0x16 0x16 0x16 0x16 0x16>;
> ti,chan-step-opendelay = <0x500 0x500 0x500 0x500 0x500 0x500 0x500>;
> ti,chan-step-sampledelay = <0x0 0x0 0x0 0x0 0x0 0x0 0x0>;
> 
> Regards,
> John
>>
>> -- 
>> Regards
>> Vignesh
> 

-- 
Regards
Vignesh