[PATCH v2 08/10] ARM: sun8i: h3: Add SY8106A regulator to Orange Pi PC
From: icenowy@aosc.io (Icenowy Zheng)
Date: 2018-02-06 04:52:16
Also in:
linux-devicetree, lkml
Subsystem:
the rest · Maintainer:
Linus Torvalds
From: Ondrej Jirman <redacted> 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 <redacted> [Icenowy: Enable DVFS in this patch, slight changes and change commit message] Signed-off-by: Icenowy Zheng <icenowy@aosc.io> --- Changes in v2: - Reduce maximum voltage to 1.3V. - Slightly changed the comment at 1.0V minimum voltage for taking BSP DVFS table instead of Armbian one. arch/arm/boot/dts/sun8i-h3-orangepi-pc.dts | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+)
diff --git a/arch/arm/boot/dts/sun8i-h3-orangepi-pc.dts b/arch/arm/boot/dts/sun8i-h3-orangepi-pc.dts
index d22546df1b82..ded9d8d6d008 100644
--- a/arch/arm/boot/dts/sun8i-h3-orangepi-pc.dts
+++ b/arch/arm/boot/dts/sun8i-h3-orangepi-pc.dts@@ -98,6 +98,10 @@ status = "okay"; }; +&cpu0 { + cpu-supply = <®_sy8106a>; +}; + &ehci0 { status = "okay"; };
@@ -160,6 +164,29 @@ }; }; +&r_i2c { + status = "okay"; + + reg_sy8106a: regulator at 65 { + compatible = "silergy,sy8106a"; + reg = <0x65>; + regulator-name = "vdd-cpux"; + /* + * 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";
--
2.15.1