[PATCH 8/9] ARM: dts: sun7i: bananapi-m1-plus: Add PMIC regulators and OPPs for cpufreq
From: Chen-Yu Tsai <hidden>
Date: 2016-07-06 09:10:49
Also in:
linux-arm-kernel
Subsystem:
the rest · Maintainer:
Linus Torvalds
Possibly related (same subject, not in this thread)
- 2016-07-12 · Re: [PATCH 8/9] ARM: dts: sun7i: bananapi-m1-plus: Add PMIC regulators and OPPs for cpufreq · Chen-Yu Tsai <hidden>
- 2016-07-09 · Re: [PATCH 8/9] ARM: dts: sun7i: bananapi-m1-plus: Add PMIC regulators and OPPs for cpufreq · Maxime Ripard <hidden>
The Bananapi M1+, like other Allwinner A20 based boards, uses the AXP209 PMIC to supply its power. The vendor FEX file's DVFS table suggests the board's CPU power rail has a voltage drop of 25 ~ 50 mV. Add the PMIC regulator nodes and copy the DVFS table from the FEX file. Signed-off-by: Chen-Yu Tsai <redacted> --- arch/arm/boot/dts/sun7i-a20-bananapi-m1-plus.dts | 48 ++++++++++++++++++++++-- 1 file changed, 44 insertions(+), 4 deletions(-)
diff --git a/arch/arm/boot/dts/sun7i-a20-bananapi-m1-plus.dts b/arch/arm/boot/dts/sun7i-a20-bananapi-m1-plus.dts
index ba5bca0fe997..7bb418bd1b6e 100644
--- a/arch/arm/boot/dts/sun7i-a20-bananapi-m1-plus.dts
+++ b/arch/arm/boot/dts/sun7i-a20-bananapi-m1-plus.dts@@ -105,6 +105,22 @@ status = "okay"; }; +&cpu0 { + cpu-supply = <®_dcdc2>; + + /* The custom DVFS table suggests a voltage drop of 25 ~ 50 mV */ + operating-points = < + /* kHz uV */ + 1080000 1450000 + 912000 1425000 + 864000 1350000 + 720000 1250000 + 528000 1150000 + 312000 1100000 + 144000 1050000 + >; +}; + &ehci0 { status = "okay"; };
@@ -132,13 +148,9 @@ status = "okay"; axp209: pmic@34 { - compatible = "x-powers,axp209"; reg = <0x34>; interrupt-parent = <&nmi_intc>; interrupts = <0 IRQ_TYPE_LEVEL_LOW>; - - interrupt-controller; - #interrupt-cells = <1>; }; };
@@ -222,6 +234,34 @@ }; }; +#include "axp209.dtsi" + +®_dcdc2 { + /* The custom DVFS table suggests a voltage drop of 25 ~ 50 mV */ + regulator-always-on; + regulator-min-microvolt = <1050000>; + regulator-max-microvolt = <1450000>; + regulator-name = "vdd-cpu"; +}; + +®_dcdc3 { + regulator-always-on; + regulator-min-microvolt = <1000000>; + regulator-max-microvolt = <1400000>; + regulator-name = "vdd-int-dll"; +}; + +®_ldo1 { + regulator-name = "vdd-rtc"; +}; + +®_ldo2 { + regulator-always-on; + regulator-min-microvolt = <3000000>; + regulator-max-microvolt = <3000000>; + regulator-name = "avcc"; +}; + &uart0 { pinctrl-names = "default"; pinctrl-0 = <&uart0_pins_a>;
--
2.8.1