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[209.132.180.67]) by mx.google.com with ESMTP id w4si922108pbk.264.2014.02.12.22.43.35; Wed, 12 Feb 2014 22:43:35 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752911AbaBMGnY (ORCPT + 27 others); Thu, 13 Feb 2014 01:43:24 -0500 Received: from mail-pa0-f50.google.com ([209.85.220.50]:55399 "EHLO mail-pa0-f50.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752502AbaBMGnW (ORCPT ); Thu, 13 Feb 2014 01:43:22 -0500 Received: by mail-pa0-f50.google.com with SMTP id kp14so10402562pab.9 for ; Wed, 12 Feb 2014 22:43:21 -0800 (PST) X-Received: by 10.68.125.164 with SMTP id mr4mr55978539pbb.27.1392273801900; Wed, 12 Feb 2014 22:43:21 -0800 (PST) Received: from linaro.sisodomain.com ([115.113.119.130]) by mx.google.com with ESMTPSA id nv7sm2893781pbc.31.2014.02.12.22.43.18 for (version=TLSv1.1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Wed, 12 Feb 2014 22:43:20 -0800 (PST) From: Sachin Kamat To: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Cc: mark.rutland@arm.com, sbkim73@samsung.com, lee.jones@linaro.org, broonie@kernel.org, sachin.kamat@linaro.org Subject: [PATCH v3 3/3] Documentation: mfd: Add binding document for S2MPA01 Date: Thu, 13 Feb 2014 12:07:56 +0530 Message-Id: <1392273476-32736-3-git-send-email-sachin.kamat@linaro.org> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1392273476-32736-1-git-send-email-sachin.kamat@linaro.org> References: <1392273476-32736-1-git-send-email-sachin.kamat@linaro.org> Sender: linux-kernel-owner@vger.kernel.org Precedence: list List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Removed-Original-Auth: Dkim didn't pass. X-Original-Sender: sachin.kamat@linaro.org X-Original-Authentication-Results: mx.google.com; spf=neutral (google.com: 209.85.220.169 is neither permitted nor denied by best guess record for domain of patch+caf_=patchwork-forward=linaro.org@linaro.org) smtp.mail=patch+caf_=patchwork-forward=linaro.org@linaro.org Mailing-list: list patchwork-forward@linaro.org; contact patchwork-forward+owners@linaro.org X-Google-Group-Id: 836684582541 List-Post: , List-Help: , List-Archive: List-Unsubscribe: , Added initial binding documentation for S2MPA01 MFD. Signed-off-by: Sachin Kamat Acked-by: Mark Brown --- Changes since v2: * Re-worded as suggested by Mark Rutland --- Documentation/devicetree/bindings/mfd/s2mpa01.txt | 90 +++++++++++++++++++++ 1 file changed, 90 insertions(+) create mode 100644 Documentation/devicetree/bindings/mfd/s2mpa01.txt diff --git a/Documentation/devicetree/bindings/mfd/s2mpa01.txt b/Documentation/devicetree/bindings/mfd/s2mpa01.txt new file mode 100644 index 000000000000..c13d3d8c3947 --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/s2mpa01.txt @@ -0,0 +1,90 @@ + +* Samsung S2MPA01 Voltage and Current Regulator + +The Samsung S2MPA01 is a multi-function device which includes high +efficiency buck converters including Dual-Phase buck converter, various LDOs, +and an RTC. It is interfaced to the host controller using an I2C interface. +Each sub-block is addressed by the host system using different I2C slave +addresses. + +Required properties: +- compatible: Should be "samsung,s2mpa01-pmic". +- reg: Specifies the I2C slave address of the PMIC block. It should be 0x66. + +Optional properties: +- interrupt-parent: Specifies the phandle of the interrupt controller to which + the interrupts from s2mpa01 are delivered to. +- interrupts: An interrupt specifier for the sole interrupt generated by the + device. + +Optional nodes: +- regulators: The regulators of s2mpa01 that have to be instantiated should be + included in a sub-node named 'regulators'. Regulator nodes and constraints + included in this sub-node use the standard regulator bindings which are + documented elsewhere. + +Properties for BUCK regulator nodes: +- regulator-ramp-delay: ramp delay in uV/us. May be 6250, 12500 + (default), 25000, or 50000. May be 0 for disabling the ramp delay on + BUCK{1,2,3,4}. + + In the absence of the regulator-ramp-delay property, the default ramp + delay will be used. + + NOTE: Some BUCKs share the ramp rate setting i.e. same ramp value will be set + for a particular group of BUCKs. So provide same regulator-ramp-delay=. + + The following BUCKs share ramp settings: + * 1 and 6 + * 2 and 4 + * 8, 9, and 10 + +The following are the names of the regulators that the s2mpa01 PMIC block +supports. Note: The 'n' in LDOn and BUCKn represents the LDO or BUCK number +as per the datasheet of s2mpa01. + + - LDOn + - valid values for n are 1 to 26 + - Example: LDO1, LD02, LDO26 + - BUCKn + - valid values for n are 1 to 10. + - Example: BUCK1, BUCK2, BUCK9 + +Example: + + s2mpa01_pmic@66 { + compatible = "samsung,s2mpa01-pmic"; + reg = <0x66>; + + regulators { + ldo1_reg: LDO1 { + regulator-name = "VDD_ALIVE"; + regulator-min-microvolt = <1000000>; + regulator-max-microvolt = <1000000>; + }; + + ldo2_reg: LDO2 { + regulator-name = "VDDQ_MMC2"; + regulator-min-microvolt = <2800000>; + regulator-max-microvolt = <2800000>; + regulator-always-on; + }; + + buck1_reg: BUCK1 { + regulator-name = "vdd_mif"; + regulator-min-microvolt = <950000>; + regulator-max-microvolt = <1350000>; + regulator-always-on; + regulator-boot-on; + }; + + buck2_reg: BUCK2 { + regulator-name = "vdd_arm"; + regulator-min-microvolt = <950000>; + regulator-max-microvolt = <1350000>; + regulator-always-on; + regulator-boot-on; + regulator-ramp-delay = <50000>; + }; + }; + };