linux-kernel - Re: [PATCH POST V2] ARM: dts: Add am57xx-beagle-x15

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Date:	Fri, 7 Nov 2014 13:37:04 -0500
From:	Tom Rini <trini@...com>
To:	Nishanth Menon <nm@...com>, Tony Lindgren <tony@...mide.com>
CC:	<linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	<devicetree@...r.kernel.org>, <linux-omap@...r.kernel.org>,
	<balbi@...com>, <gerald@...nddesignsgroup.com>, <fcooper@...com>,
	<beagleboard@...glegroups.com>
Subject: Re: [PATCH POST V2] ARM: dts: Add am57xx-beagle-x15

On 11/07/2014 12:47 PM, Nishanth Menon wrote:
> BeagleBoard-X15 is the next generation Open Source Hardware
> BeagleBoard based on TI's AM5728 SoC featuring dual core 1.5GHz A15
> processor. The platform features 2GB DDR3L (w/dual 32bit busses),
> eSATA, 3 USB3.0 ports, integrated HDMI (1920x1080@60), separate LCD
> port, video In port, 4GB eMMC, uSD, Analog audio in/out, dual 1G
> Ethernet.
> 
> For more information, refer to:
> BeagleBoard-X15 Wiki:
> http://www.elinux.org/Beagleboard:BeagleBoard-X15
> 
> AM5728 is part of the Sitara product family whose additional details
> will be available: http://www.ti.com/lsds/ti/arm/overview.page
> 
> Technical Reference Manual for AM5728 is public domain at:
> http://www.ti.com/lit/spruhz6
> 
> Just add basic support for the moment, the following updates are needed:
>   i)	Ethernet - depends on SoC dts fixes
>   ii)	USB Client (USB2) - depends on GPIO extcon
>   ii)	HDMI - additional driver fixes pending
>   iii)	Audio - additional driver fixes pending
> 
> NOTE:
> AM5728 Data Manual (SPRS915L - August 2014) section 4.1.1 states: "All
> unused power supply balls must be supplied with the voltages specified
> in the Section 5.2, Recommended Operating Conditions". This implies
> that all unused voltage rails for AM5728 can never be switched off even
> if the hardware blocks inside that voltage domain is unused. Switching
> off these unused rails may result in stability issues on other domains
> and increased leakage and power-on-hour impacts.
> 
> Signed-off-by: Felipe Balbi <balbi@...com>
> Signed-off-by: Nishanth Menon <nm@...com>

Reviewed-by: Tom Rini <trini@...com>


-- 
Tom
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