linux-kernel - Re: [RFC PATCH] ARM: dts: am33xx: Re-arrange the USB dt to reflect the h/w configuration

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Date:	Wed, 14 May 2014 14:50:35 -0700
From:	Tony Lindgren <tony@...mide.com>
To:	George Cherian <george.cherian@...com>
Cc:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	devicetree@...r.kernel.org, linux-omap@...r.kernel.org,
	linux@....linux.org.uk, galak@...eaurora.org,
	ijc+devicetree@...lion.org.uk, mark.rutland@....com,
	pawel.moll@....com, robh+dt@...nel.org, bcousson@...libre.com,
	ezequiel@...guardiasur.com.ar, bigeasy@...utronix.de,
	yegorslists@...glemail.com, balbi@...com
Subject: Re: [RFC PATCH] ARM: dts: am33xx: Re-arrange the USB dt to reflect
 the h/w configuration

* George Cherian <george.cherian@...com> [140508 23:34]:
> Re arrange the USB dt for AM33xx to take it a bit closer
> to the hardware configuration.
> 
> The USBSS is designed as follows
> 
> USB control Module	0x44e10_0620
> 
> USBSS			0x4740_0000
> 
> USB0			0x4740_1000
> USB0_PHY		0x4740_1300
> USB0_CORE		0x4740_1400
> 
> USB1			0x4740_1800
> USB1_PHY		0x4740_1b00
> USB1_CORE		0x4740_1c00
> 
> CPPI DMA Controller	0x4740_2000
> CPPI DMA Scheduler	0x4740_3000
> Queue Manager		0x4740_4000
> 
> So model the DT as follows
> USBSS {
>     usb_ctrl_mod: {
>         0x44e10_0620
>     }
>     usb0: {
>     0x4740_1000
>     0x4740_1400
>     }
>     usb0_phy:{
>     0x4740_1300
>     }
>     usb1:{
>     0x4740_1800
>     0x4740_1c00
>     }
>     usb1_phy: {
>     0x4740_1b00
>     }
>     cppi41dma: {
>     0x4740_2000
>     0x4740_3000
>     0x4740_4000
>     }
> }

Is this just a cosmetic change or is this trying to workaround
some edma related init order issue?

Regards,

Tony
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