From: Maxime Ripard <maxime.ripard@bootlin.com>
To: Yangtao Li <tiny.windzz@gmail.com>
Cc: mark.rutland@arm.com, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, wens@csie.org, robh+dt@kernel.org,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH 1/4] arm64: dts: allwinner: h6: orangepi: Add CPU supply regulator
Date: Thu, 14 Feb 2019 14:46:17 +0100 [thread overview]
Message-ID: <20190214134617.b44pa7onf3brmhhj@flea> (raw)
In-Reply-To: <20190214130910.9201-2-tiny.windzz@gmail.com>
Hi!
Thanks for your patches
On Thu, Feb 14, 2019 at 08:09:07AM -0500, Yangtao Li wrote:
> 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.
>
> 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(-)
>
> 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>;
This violates the minimum and maximum recommended voltages in the H6
datasheet. Could you clarify why you are doing so (ideally in the
commit log)?
Thanks!
Maxime
--
Maxime Ripard, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com
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next prev parent reply other threads:[~2019-02-14 13:46 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-14 13:09 [PATCH 0/4] arm64: dts: allwinner: h6: Enable CPU DVFS(cpufreq) Yangtao Li
2019-02-14 13:09 ` [PATCH 1/4] arm64: dts: allwinner: h6: orangepi: Add CPU supply regulator Yangtao Li
2019-02-14 13:46 ` Maxime Ripard [this message]
2019-02-14 14:07 ` Frank Lee
2019-02-14 14:35 ` Maxime Ripard
2019-02-14 13:09 ` [PATCH 2/4] arm64: dts: allwinner: h6: pine: " Yangtao Li
2019-02-14 13:09 ` [PATCH 3/4] arm64: dts: allwinner: h6: Add clock to CPU cores Yangtao Li
2019-02-14 13:09 ` [PATCH 4/4] arm64: dts: allwinner: h6: Add CPU Operating Performance Points table Yangtao Li
2019-02-14 14:38 ` Maxime Ripard
2019-02-14 14:52 ` Frank Lee
2019-02-14 16:56 ` Frank Lee
2019-02-15 13:56 ` Maxime Ripard
2019-02-15 14:09 ` Frank Lee
2019-02-18 9:33 ` Maxime Ripard
2019-02-15 13:53 ` Maxime Ripard
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