From: Chen-Yu Tsai <wens@csie.org>
To: Maxime Ripard <maxime.ripard@bootlin.com>
Cc: linux-sunxi@googlegroups.com, Icenowy Zheng <icenowy@aosc.io>,
Andre Przywara <andre.przywara@arm.com>,
Emmanuel Vadot <manu@freebsd.org>,
Jagan Teki <jagan@amarulasolutions.com>,
Sergey Matyukevich <geomatsi@gmail.com>,
Hauke Mehrtens <hauke@hauke-m.de>, Chen-Yu Tsai <wens@csie.org>,
linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [PATCH 04/10] arm64: dts: allwinner: h5: nanopi-neo2: Add CPU regulator supply
Date: Wed, 30 Jan 2019 16:41:57 +0800 [thread overview]
Message-ID: <20190130084203.25053-5-wens@csie.org> (raw)
In-Reply-To: <20190130084203.25053-1-wens@csie.org>
The Nanopi Neo 2 uses a fixed regulator to supply the CPU cores. The
feedback resistor network can be changed by toggling a GPIO line. This
is effectively a GPIO controlled regulator that can change between 1.1V
and 1.3V.
Cc: Icenowy Zheng <icenowy@aosc.io>
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
---
This patch is based on the schematics and has not been tested on an
actual board.
---
.../dts/allwinner/sun50i-h5-nanopi-neo2.dts | 20 +++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h5-nanopi-neo2.dts b/arch/arm64/boot/dts/allwinner/sun50i-h5-nanopi-neo2.dts
index cc268a69786c..08ffdfb78137 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-h5-nanopi-neo2.dts
+++ b/arch/arm64/boot/dts/allwinner/sun50i-h5-nanopi-neo2.dts
@@ -99,6 +99,26 @@
gpio = <&r_pio 0 2 GPIO_ACTIVE_HIGH>; /* PL2 */
status = "okay";
};
+
+ reg_vdd_cpux: vdd-cpux {
+ compatible = "regulator-gpio";
+ regulator-name = "vdd-cpux";
+ regulator-type = "voltage";
+ regulator-boot-on;
+ regulator-always-on;
+ regulator-min-microvolt = <1100000>;
+ regulator-max-microvolt = <1300000>;
+ regulator-ramp-delay = <50>; /* 4ms */
+ enable-gpios = <&r_pio 0 8 GPIO_ACTIVE_HIGH>; /* PL8 */
+ gpios = <&r_pio 0 1 GPIO_ACTIVE_HIGH>; /* PL6 */
+ gpios-states = <0x1>;
+ states = <1100000 0x0
+ 1300000 0x1>;
+ };
+};
+
+&cpu0 {
+ cpu-supply = <®_vdd_cpux>;
};
&ehci0 {
--
2.20.1
next prev parent reply other threads:[~2019-01-30 8:43 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-30 8:41 [PATCH 00/10] arm64: dts: allwinner: h5: Enable CPU DVFS (cpufreq) Chen-Yu Tsai
2019-01-30 8:41 ` [PATCH 01/10] ARM: dts: sunxi: bananapi-m2-plus-v1.2: Fix CPU supply voltages Chen-Yu Tsai
2019-01-30 8:41 ` [PATCH 02/10] ARM: dts: bananapi-m2-plus: Add CPU supply regulator Chen-Yu Tsai
2019-01-30 8:41 ` [PATCH 03/10] arm64: dts: allwinner: h5: Hook up cpu regulator supplies Chen-Yu Tsai
2019-01-30 8:41 ` Chen-Yu Tsai [this message]
2019-01-30 8:41 ` [PATCH 05/10] arm64: dts: allwinner: h5: orange-pi-zero-plus: Add CPU regulator supply Chen-Yu Tsai
2019-01-30 8:41 ` [PATCH 06/10] arm64: dts: allwinner: h5: orange-pi-zero-plus2: " Chen-Yu Tsai
2019-01-30 8:42 ` [PATCH 07/10] arm64: dts: allwinner: h5: orange-pi-pc2: " Chen-Yu Tsai
2019-01-30 8:42 ` [PATCH 08/10] arm64: dts: allwinner: h5: orange-pi-prime: " Chen-Yu Tsai
2019-01-30 8:42 ` [PATCH 09/10] arm64: dts: allwinner: h5: Add clock to CPU cores Chen-Yu Tsai
2019-01-30 8:42 ` [PATCH 10/10] arm64: dts: allwinner: h5: Add CPU Operating Performance Points table Chen-Yu Tsai
2019-01-30 9:29 ` Maxime Ripard
2019-01-30 9:41 ` Chen-Yu Tsai
2019-01-30 9:59 ` Maxime Ripard
2019-01-31 3:28 ` Chen-Yu Tsai
2019-09-02 14:03 ` [PATCH 00/10] arm64: dts: allwinner: h5: Enable CPU DVFS (cpufreq) Ondřej Jirman
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