From patchwork Wed Sep 23 09:22:43 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Vaittinen, Matti" X-Patchwork-Id: 258954 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-11.2 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2D370C2D0A8 for ; Wed, 23 Sep 2020 09:23:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 03B8721D91 for ; Wed, 23 Sep 2020 09:23:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726406AbgIWJXG (ORCPT ); Wed, 23 Sep 2020 05:23:06 -0400 Received: from mail-lj1-f196.google.com ([209.85.208.196]:36319 "EHLO mail-lj1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726314AbgIWJXA (ORCPT ); Wed, 23 Sep 2020 05:23:00 -0400 Received: by mail-lj1-f196.google.com with SMTP id r24so16622379ljm.3; Wed, 23 Sep 2020 02:22:56 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=wAiiRdUD5PoxRNEJ68GQ4WItPJQxb6/445NDc6SLCCw=; b=eY4AJrylhQBbSpK/KMfIVsTlx8xir4FPKyATo8OcsA/+k1JcO3ZiAI9L9zNc8p67ft PBIsYv7o/wc0kZF+XDUBaKyZCQCgA7jZcHSxActOjtM85I3+lxfhEgEdGbVTOvNb0w5S zBewORsW76wgEJnO/IWqoovtHbIfzXpLwjNGJoWW15Rr5k+OBUazFFZ+cSuxRDVZTlrz UB1neoytH6mt+E9iaCAJ/FeROCupeVnKpMEIqb924zVW/eUGowD8GeF2EydXQo4KUYEJ kaE+lwQV9fel+x5E+CtuizItWYT2xUZ85eONYYezQyKQXgeWSBUqNdcBwu0Bmqd2hGoA VIjw== X-Gm-Message-State: AOAM532mN5Wt7mY5xfHiLMzzhiK0zGxfMcS+p6L9TIylGR9Dbfmjou2a TTjBG4t7XwNXnWTx1DvvrEw= X-Google-Smtp-Source: ABdhPJxB3Qzq3vj3rVF+lItDkQbHv0sfLO8Qo2D42dPY1HYtQiXLa5LsHX0OCmVG4IuFocwPEOkYvQ== X-Received: by 2002:a2e:b8d6:: with SMTP id s22mr3119798ljp.284.1600852976011; Wed, 23 Sep 2020 02:22:56 -0700 (PDT) Received: from localhost.localdomain ([213.255.186.46]) by smtp.gmail.com with ESMTPSA id n204sm4511674lfa.207.2020.09.23.02.22.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 23 Sep 2020 02:22:55 -0700 (PDT) Date: Wed, 23 Sep 2020 12:22:43 +0300 From: Matti Vaittinen To: mazziesaccount@gmail.com, matti.vaittinen@fi.rohmeurope.com Cc: Lee Jones , Rob Herring , Matti Vaittinen , Wim Van Sebroeck , Guenter Roeck , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-power@fi.rohmeurope.com, linux-watchdog@vger.kernel.org Subject: [PATCH v2 1/4] dt_bindings: mfd: Add ROHM BD9576MUF and BD9573MUF PMICs Message-ID: <7308c9d047d8533650cdbd17e328958da28182bf.1600852339.git.matti.vaittinen@fi.rohmeurope.com> References: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.12.1 (2019-06-15) Precedence: bulk List-ID: X-Mailing-List: linux-watchdog@vger.kernel.org Add bindings for ROHM BD9576MUF and BD9573MUF PMICs. These PMICs are primarily intended to be used to power the R-Car series processors. They provide 6 power outputs, safety features and a watchdog with two functional modes. Signed-off-by: Matti Vaittinen --- Changes since v1: - Fixed case for few regulator-names in the example .../bindings/mfd/rohm,bd9576-pmic.yaml | 129 ++++++++++++++++++ 1 file changed, 129 insertions(+) create mode 100644 Documentation/devicetree/bindings/mfd/rohm,bd9576-pmic.yaml diff --git a/Documentation/devicetree/bindings/mfd/rohm,bd9576-pmic.yaml b/Documentation/devicetree/bindings/mfd/rohm,bd9576-pmic.yaml new file mode 100644 index 000000000000..99d11ae76b1b --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/rohm,bd9576-pmic.yaml @@ -0,0 +1,129 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/mfd/rohm,bd9576-pmic.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: ROHM BD9576MUF and BD9573MUF Power Management Integrated Circuit bindings + +maintainers: + - Matti Vaittinen + +description: | + BD9576MUF and BD9573MUF are power management ICs primarily intended for + powering the R-Car series processors. + The IC provides 6 power outputs with configurable sequencing and safety + monitoring. A watchdog logic with slow ping/windowed modes is also included. + +properties: + compatible: + enum: + - rohm,bd9576 + - rohm,bd9573 + + reg: + description: + I2C slave address. + maxItems: 1 + + interrupts: + maxItems: 1 + + rohm,vout1-en-low: + description: + BD9576 and BD9573 VOUT1 regulator enable state can be individually + controlled by a GPIO. This is dictated by state of vout1-en pin during + the PMIC startup. If vout1-en is LOW during PMIC startup then the VOUT1 + enable sate is controlled via this pin. Set this property if vout1-en + is wired to be down at PMIC start-up. + type: boolean + + rohm,vout1-en-gpios: + description: + GPIO specifier to specify the GPIO connected to vout1-en for vout1 ON/OFF + state control. + maxItems: 1 + + rohm,ddr-sel-low: + description: + The BD9576 and BD9573 output voltage for DDR can be selected by setting + the ddr-sel pin low or high. Set this property if ddr-sel is grounded. + type: boolean + + rohm,watchdog-enable-gpios: + description: The GPIO line used to enable the watchdog. + maxItems: 1 + + rohm,watchdog-ping-gpios: + description: The GPIO line used to ping the watchdog. + maxItems: 1 + + hw_margin_ms: + minimum: 4 + maximum: 4416 + description: Watchog timeout in milliseconds + + rohm,hw-margin-min-ms: + minimum: 2 + maximum: 220 + description: + Watchdog on these ICs can be configured in a window mode where the ping + must come within certain time-window. Eg. too quick pinging will also + trigger timeout. Specify the minimum delay between pings if you wish to + use the window mode. Note, the maximum delay is internally configured as + a certain multiple of this value so maximum delay can be only up to 15 + times this value. For example for 73 ms short ping value the maximum + timeout will be close to 1 sec. + + regulators: + $ref: ../regulator/rohm,bd9576-regulator.yaml + description: + List of child nodes that specify the regulators. + +required: + - compatible + - reg + - regulators + +additionalProperties: false + +examples: + - | + #include + #include + i2c { + #address-cells = <1>; + #size-cells = <0>; + pmic: pmic@30 { + compatible = "rohm,bd9576"; + reg = <0x30>; + rohm,vout1-en-low; + rohm,vout1-en-gpios = <&gpio2 6 GPIO_ACTIVE_HIGH>; + rohm,ddr-sel-low; + rohm,watchdog-enable-gpios = <&gpio2 6 GPIO_ACTIVE_HIGH>; + rohm,watchdog-ping-gpios = <&gpio2 7 GPIO_ACTIVE_HIGH>; + hw_margin_ms = <30>; + rohm,hw-margin-min-ms = <4>; + + regulators { + boost1: regulator-vd50 { + regulator-name = "VD50"; + }; + buck1: regulator-vd18 { + regulator-name = "VD18"; + }; + buck2: regulator-vdddr { + regulator-name = "VDDDR"; + }; + buck3: regulator-vd10 { + regulator-name = "VD10"; + }; + ldo: regulator-voutl1 { + regulator-name = "VOUTL1"; + }; + sw: regulator-vouts1 { + regulator-name = "VOUTS1"; + }; + }; + }; + };