linux-kernel - [PATCH 1/2] dt-bindings: regulator: Add Spreadtrum SC27xx regulator documentation

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <f6d8ff765f4864e5b6ace1f022202d8793a7becf.1512118703.git.erick.chen@spreadtrum.com>
Date:   Fri, 1 Dec 2017 16:58:15 +0800
From:   Erick Chen <erick.chen@...eadtrum.com>
To:     <broonie@...nel.org>, <robh+dt@...nel.org>, <mark.rutland@....com>,
        <lgirdwood@...il.com>
CC:     <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <baolin.wang@...aro.org>, <baolin.wang@...eadtrum.com>,
        <erick.chen@...eadtrum.com>
Subject: [PATCH 1/2] dt-bindings: regulator: Add Spreadtrum SC27xx regulator documentation

This patch adds support for the Spreadtrum SC2731
voltage regulator device.

Signed-off-by: Erick Chen <erick.chen@...eadtrum.com>
---
 .../bindings/regulator/sprd,sc2731-regulator.txt   |   45 ++++++++++++++++++++
 1 file changed, 45 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/regulator/sprd,sc2731-regulator.txt

diff --git a/Documentation/devicetree/bindings/regulator/sprd,sc2731-regulator.txt b/Documentation/devicetree/bindings/regulator/sprd,sc2731-regulator.txt
new file mode 100644
index 0000000..619385e
--- /dev/null
+++ b/Documentation/devicetree/bindings/regulator/sprd,sc2731-regulator.txt
@@ -0,0 +1,45 @@
+Spreadtrum SC2731 Voltage regulators
+
+The SC2731 integrates low-voltage and low quiescent current DCDC/LDO.
+14 LDO and 3 DCDCs are designed for external use. All DCDCs/LDOs have
+their own bypass (power-down) control signals. External tantalum or MLCC
+ceramic capacitors are recommended to use with these LDOs.
+
+Required properties:
+ - compatible: should be "sprd,sc2731-regulator".
+ - reg: address offset of regulator registers.
+ - regulators: List of regulators provided by this controller. It is named
+ according to its regulator type, BUCK_<name> and LDO_<name>. The definition
+ for each of these nodes is defined using the standard binding for regulators
+ at Documentation/devicetree/bindings/regulator/regulator.txt.
+
+The valid names for regulators are::
+BUCK:
+	BUCK_CPU0, BUCK_CPU1, BUCK_RF
+LDO:
+	LDO_CAMA0, LDO_CAMA1, LDO_CAMMOT, LDO_VLDO, LDO_EMMCCORE, LDO_SDCORE, LDO_SDIO,
+	LDO_WIFIPA, LDO_USB33, LDO_CAMD0, LDO_CAMD1, LDO_CON, LDO_CAMIO, LDO_SRAM
+
+Example:
+	power-controller@810 {
+		compatible = "sprd,sc2731-regulator";
+		reg = <0x810>;
+
+		regulators {
+			vddarm0: BUCK_CPU0 {
+				regulator-name = "vddarm0";
+				regulator-min-microvolt = <400000>;
+				regulator-max-microvolt = <1996875>;
+				regulator-ramp-delay = <25000>;
+				regulator-always-on;
+			};
+
+			vddcama0: LDO_CAMA0 {
+				regulator-name = "vddcama0";
+				regulator-min-microvolt = <1200000>;
+				regulator-max-microvolt = <3750000>;
+				regulator-enable-ramp-delay = <100>;
+			};
+			...
+		};
+	};
-- 
1.7.9.5