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ARM: dts: am437x-idk-evm: Disable OPP50 for MPU

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AM437x IDK has a TPS386000 supply voltage supervisor on the VDD_MPU rail
set to trigger undervoltage condition at 0.96V. Because of this, OPP50,
which is normally configured to 300MHz at 0.95V, must be disabled to
avoid triggering the undervoltage condition. Also mark OPP100 as the
suspend-opp as it is now our lowest OPP.

Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
Dave Gerlach 2017-12-15 11:16:42 -06:00 committed by Tony Lindgren
parent b155232dd8
commit 337c6c9a69
1 changed files with 14 additions and 0 deletions
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14
arch/arm/boot/dts/am437x-idk-evm.dts
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@ -519,3 +519,17 @@
&cpu {
cpu0-supply = <&tps>;
};
&cpu0_opp_table {
/*
* Supply voltage supervisor on board will not allow opp50 so
* disable it and set opp100 as suspend OPP.
*/
opp50@300000000 {
status = "disabled";
};
opp100@600000000 {
opp-suspend;
};
};