[v3,1/4] arm64: dts: allwinner: h6: orangepi: Add CPU supply regulator
diff mbox series

Message ID 20190215155338.10564-2-tiny.windzz@gmail.com
State New
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Series
  • arm64: dts: allwinner: h6: Enable CPU DVFS(cpufreq)
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Commit Message

Frank Lee Feb. 15, 2019, 3:53 p.m. UTC
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 <tiny.windzz@gmail.com>
---
 arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi.dtsi | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

Patch
diff mbox series

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 = <&reg_dcdca>;
+};
+
 &uart0 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&uart0_ph_pins>;