[PATCH] ARM: dts: dra7-evm: Keep all VDD rails always-on
tony at atomide.com
Mon Nov 10 12:39:23 PST 2014
* Roger Quadros <rogerq at ti.com> [141103 06:44]:
> Hi Nishant,
> On 10/21/2014 05:38 PM, Nishanth Menon wrote:
> > DRA7 Data Manual (SPRS857L - 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 Vayu 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.
> > J6eco-evm dts file already considers this, however j6evm-dts file needs
> > to be fixed to consider this constraint of the SoC.
> > Signed-off-by: Nishanth Menon <nm at ti.com>
> Acked-by: Roger Quadros <rogerq at ti.com>
> I'm assuming that vddshv8 (MMC1 power group) can be switched off.
Applying into omap-for-v3.19/dt thanks.
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