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arm64: dts: allwinner: h6: Enable CPU opp tables for Orange Pi 3

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Enable CPU opp tables for Orange Pi 3.

This needs to change the CPU regulator max voltage to fit
the OPP table.

Also add the ramp-delay information to avoid any out of spec
running as the regulator is slower at reaching the voltage
requested compare to the PLL reaching the frequency.

There is no such information for AXP805 but similar PMIC (AXP813)
has a DVM (Dynamic Voltage scaling Management) ramp rate equal
to 2500uV/us.

Signed-off-by: Clément Péron <peron.clem@gmail.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
This commit is contained in:
Clément Péron
2020-04-20 15:00:18 +02:00
committed by Maxime Ripard
parent 67533f873a
commit ebae33c3f6
1 changed files with 3 additions and 0 deletions
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3
arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi-3.dts
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@@ -4,6 +4,7 @@
/dts-v1/;
#include "sun50i-h6.dtsi"
#include "sun50i-h6-cpu-opp.dtsi"
#include <dt-bindings/gpio/gpio.h>
@@ -257,6 +258,7 @@ reg_dcdca: dcdca {
regulator-always-on;
regulator-min-microvolt = <800000>;
regulator-max-microvolt = <1160000>;
regulator-ramp-delay = <2500>;
regulator-name = "vdd-cpu";
};
@@ -264,6 +266,7 @@ reg_dcdcc: dcdcc {
regulator-enable-ramp-delay = <32000>;
regulator-min-microvolt = <810000>;
regulator-max-microvolt = <1080000>;
regulator-ramp-delay = <2500>;
regulator-name = "vdd-gpu";
};