From: Hebbar, Gururaja <[email protected]> This adds a sleep and wake sequence to set the VDD core voltage to the OPP50 level, 0.950V. This saves power during suspend. The sequences are specific to the EVM-SK layout and PMIC, the TPS65910. The sequences are written out by the Cortex-M3.
Signed-off-by: Hebbar, Gururaja <[email protected]> Signed-off-by: Russ Dill <[email protected]> --- arch/arm/boot/dts/am335x-evmsk.dts | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/arch/arm/boot/dts/am335x-evmsk.dts b/arch/arm/boot/dts/am335x-evmsk.dts index 0c8ad17..704bbb3 100644 --- a/arch/arm/boot/dts/am335x-evmsk.dts +++ b/arch/arm/boot/dts/am335x-evmsk.dts @@ -174,6 +174,16 @@ status = "okay"; clock-frequency = <400000>; + /* Set OPP50 (0.95V) for VDD core */ + sleep_sequence = /bits/ 8 < + 0x02 0x2d 0x25 0x1f /* Set VDD2 to 0.95V */ + >; + + /* Set OPP100 (1.10V) for VDD core */ + wake_sequence = /bits/ 8 < + 0x02 0x2d 0x25 0x2b /* Set VDD2 to 1.1V */ + >; + tps: tps@2d { reg = <0x2d>; }; -- 1.8.3.2 -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
