From: Yangtao Li <tiny.windzz@gmail.com> 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 <tiny.windzz@gmail.com> Subject: [PATCH v3 2/4] arm64: dts: allwinner: h6: pine: Add CPU supply regulator Date: Fri, 15 Feb 2019 10:53:36 -0500 [thread overview] Message-ID: <20190215155338.10564-3-tiny.windzz@gmail.com> (raw) In-Reply-To: <20190215155338.10564-1-tiny.windzz@gmail.com> 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(-) 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>; -- 2.17.0
WARNING: multiple messages have this Message-ID (diff)
From: Yangtao Li <tiny.windzz@gmail.com> To: maxime.ripard@bootlin.com, wens@csie.org, robh+dt@kernel.org, mark.rutland@arm.com Cc: Yangtao Li <tiny.windzz@gmail.com>, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH v3 2/4] arm64: dts: allwinner: h6: pine: Add CPU supply regulator Date: Fri, 15 Feb 2019 10:53:36 -0500 [thread overview] Message-ID: <20190215155338.10564-3-tiny.windzz@gmail.com> (raw) In-Reply-To: <20190215155338.10564-1-tiny.windzz@gmail.com> 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(-) 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>; -- 2.17.0 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2019-02-15 15:54 UTC|newest] Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-02-15 15:53 [PATCH v3 0/4] arm64: dts: allwinner: h6: Enable CPU DVFS(cpufreq) Yangtao Li 2019-02-15 15:53 ` Yangtao Li 2019-02-15 15:53 ` [PATCH v3 1/4] arm64: dts: allwinner: h6: orangepi: Add CPU supply regulator Yangtao Li 2019-02-15 15:53 ` Yangtao Li 2019-02-15 15:53 ` Yangtao Li [this message] 2019-02-15 15:53 ` [PATCH v3 2/4] arm64: dts: allwinner: h6: pine: " Yangtao Li 2019-02-15 15:53 ` [PATCH v3 3/4] arm64: dts: allwinner: h6: Add clock to CPU cores Yangtao Li 2019-02-15 15:53 ` Yangtao Li 2019-02-15 15:53 ` [PATCH v3 4/4] arm64: dts: allwinner: h6: Add CPU Operating Performance Points table Yangtao Li 2019-02-15 15:53 ` Yangtao Li
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=20190215155338.10564-3-tiny.windzz@gmail.com \ --to=tiny.windzz@gmail.com \ --cc=devicetree@vger.kernel.org \ --cc=linux-arm-kernel@lists.infradead.org \ --cc=linux-kernel@vger.kernel.org \ --cc=mark.rutland@arm.com \ --cc=maxime.ripard@bootlin.com \ --cc=robh+dt@kernel.org \ --cc=wens@csie.org \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes, see mirroring instructions on how to clone and mirror all data and code used by this external index.