ARM: dts: dra7-evm: Keep all VDD rails always-on
authorNishanth Menon <nm@ti.com>
Tue, 21 Oct 2014 14:38:10 +0000 (09:38 -0500)
committerTony Lindgren <tony@atomide.com>
Mon, 10 Nov 2014 22:27:35 +0000 (14:27 -0800)
commit395b23ca57b46e79d7956ce1d5a9381dc6fe0e3a
treecbe1474f7fb911979dc07257e5538fa2216df000
parent5b434d7e9ebd5664dd2a649d08f0ab8d1c8a1f71
ARM: dts: dra7-evm: Keep all VDD rails always-on

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@ti.com>
Acked-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
arch/arm/boot/dts/dra7-evm.dts