| Message ID | 20190215155338.10564-3-tiny.windzz@gmail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | arm64: dts: allwinner: h6: Enable CPU DVFS(cpufreq) | expand |
diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h6-pine-h64.dts b/arch/arm64/boot/dts/allwinner/sun50i-h6-pine-h64.dts index bdb8470fc8dc..95c81250c2b3 100644 --- a/arch/arm64/boot/dts/allwinner/sun50i-h6-pine-h64.dts +++ b/arch/arm64/boot/dts/allwinner/sun50i-h6-pine-h64.dts @@ -213,8 +213,8 @@ 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"; }; @@ -251,6 +251,10 @@ }; }; +&cpu0 { + cpu-supply = <®_dcdca>; +}; + &uart0 { pinctrl-names = "default"; pinctrl-0 = <&uart0_ph_pins>;
The original pine 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-pine-h64.dts | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-)