From mboxrd@z Thu Jan 1 00:00:00 1970 From: Yangtao Li Subject: [PATVH v2 1/4] arm64: dts: allwinner: h6: orangepi: Add CPU supply regulator Date: Fri, 15 Feb 2019 08:49:34 -0500 Message-ID: <20190215134937.10259-2-tiny.windzz@gmail.com> References: <20190215134937.10259-1-tiny.windzz@gmail.com> Return-path: In-Reply-To: <20190215134937.10259-1-tiny.windzz@gmail.com> Sender: linux-kernel-owner@vger.kernel.org To: maxime.ripard@bootlin.com, wens@csie.org, robh+dt@kernel.org, mark.rutland@arm.com Cc: linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Yangtao Li List-Id: devicetree@vger.kernel.org The original orangepi use the dcdca to supply the CPU cores. According to the axp805 spec, the range of dcdca is 0.6 to 1.1v, 1.12 to 1.52v. In order to support more CPU frequency, slightly increase the voltage maximum and minimum. In fact, in sunxi's sdk, the actual minimum and maximum voltage of the cpu is smaller or larger than the datasheet. For some better quality ic, the minimum voltage can be smaller. For some poor quality ic, the maximum voltage needs to be increased a little. Signed-off-by: Yangtao Li --- arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi.dtsi | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi.dtsi index b2526dac2fcf..e7aebaf91ede 100644 --- a/arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi.dtsi +++ b/arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi.dtsi @@ -159,8 +159,8 @@ reg_dcdca: dcdca { regulator-always-on; - regulator-min-microvolt = <810000>; - regulator-max-microvolt = <1080000>; + regulator-min-microvolt = <800000>; + regulator-max-microvolt = <1160000>; regulator-name = "vdd-cpu"; }; @@ -191,6 +191,10 @@ }; }; +&cpu0 { + cpu-supply = <®_dcdca>; +}; + &uart0 { pinctrl-names = "default"; pinctrl-0 = <&uart0_ph_pins>; -- 2.17.0