Question regarding device tree definition of ls1021a.dtsi and .dts

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Question regarding device tree definition of ls1021a.dtsi and .dts

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jiye
Contributor V

Hi,

I understand that the .dtsi is from SoC chip level and .dts is from board level respectively.

I have a question when comes to this ls1021a.dtsi

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(1)Why there is a gpio3 there at the node section, what does that use for?

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(2)And why sysclk doesn't have a cell for address register because sysclk isn't a memory I/O device?

(3) Also the status section 

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can this be inside of the .dtsi as well, I thought this can only be inside of the .dts file only to disable or enable the node.

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yipingwang
NXP TechSupport
NXP TechSupport

1. It is used to define GPIO module.

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2. Yes, sysclk isn't a memory I/O device.

3. Status can be used inside of the .dtsi.

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