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ARM: dts: sun8i: h3: Add SY8106A regulator to Orange Pi PC

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Add SY8106A regulator to r_i2c bus and enable the r_i2c bus on
Orange Pi PC, then set the power supply of the ARM cores to this
regulator, in order to enable DVFS.

Signed-off-by: Ondrej Jirman <megous@megous.com>
[Icenowy: Enable DVFS in this patch, slight changes and change commit
 message]
Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
This commit is contained in:
Ondrej Jirman 2018-05-07 20:29:42 +08:00 committed by Maxime Ripard
parent af5d05bdc9
commit 06139c822c
1 changed files with 28 additions and 0 deletions
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28
arch/arm/boot/dts/sun8i-h3-orangepi-pc.dts
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@ -113,6 +113,10 @@
status = "okay";
};
&cpu0 {
cpu-supply = <&reg_vdd_cpux>;
};
&ehci0 {
status = "okay";
};
@ -182,6 +186,30 @@
};
};
&r_i2c {
status = "okay";
reg_vdd_cpux: regulator@65 {
compatible = "silergy,sy8106a";
reg = <0x65>;
regulator-name = "vdd-cpux";
silergy,fixed-microvolt = <1200000>;
/*
* The datasheet uses 1.1V as the minimum value of VDD-CPUX,
* however both the Armbian DVFS table and the official one
* have operating points with voltage under 1.1V, and both
* DVFS table are known to work properly at the lowest
* operating point.
*
* Use 1.0V as the minimum voltage instead.
*/
regulator-min-microvolt = <1000000>;
regulator-max-microvolt = <1300000>;
regulator-boot-on;
regulator-always-on;
};
};
&r_pio {
leds_r_opc: led_pins {
pins = "PL10";