linux-kernel - Re: [PATCH v3 5/6] dts: ipq4019: Add support for IPQ4019 DK01 board

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Date:	Thu, 18 Feb 2016 18:43:50 -0800
From:	Stephen Boyd <sboyd@...eaurora.org>
To:	Matthew McClintock <mmcclint@...eaurora.org>
Cc:	Matthew McClintock <mmcclint@....qualcomm.com>,
	Andy Gross <agross@...eaurora.org>,
	linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	qca-upstream.external@....qualcomm.com,
	Senthilkumar N L <snlakshm@...eaurora.org>,
	Varadarajan Narayanan <varada@...eaurora.org>
Subject: Re: [PATCH v3 5/6] dts: ipq4019: Add support for IPQ4019 DK01 board

On 02/16, Matthew McClintock wrote:
> On Feb 8, 2016, at 4:43 PM, Stephen Boyd <sboyd@...eaurora.org> wrote:
> > 
> > On 11/19, Matthew McClintock wrote:
> >> +
> >> +/ {
> >> +	model = "Qualcomm Technologies, Inc. IPQ4019/AP-DK01.1";
> >> +	compatible = "qcom,ipq4019";
> >> +
> >> +	clocks {
> >> +                xo: xo {
> >> +                        compatible = "fixed-clock";
> >> +                        clock-frequency = <48000000>;
> >> +                        #clock-cells = <0>;
> >> +                };
> >> +	};
> > 
> > Is there a reason the xo is here and the sleep clk is in the SoC
> > dtsi file? Both are board clocks so I would think they would be
> > added in the same place.
> 
> I’m a little bit confused and I wanted to confirm. I can see the xo clock is on the board itself. However, the sleep_clk is not, can you clarify why they would both be in the same place?
> 

The sleep clk is typically a pin on the SoC package. Look at your
schematic. Same goes for the XO.

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