From patchwork Thu Nov 5 11:37:43 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Vaittinen, Matti" X-Patchwork-Id: 318375 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=-9.7 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 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 889C2C388F7 for ; Thu, 5 Nov 2020 11:40:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 38E472083B for ; Thu, 5 Nov 2020 11:40:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729827AbgKELkI (ORCPT ); Thu, 5 Nov 2020 06:40:08 -0500 Received: from mail-lj1-f196.google.com ([209.85.208.196]:46045 "EHLO mail-lj1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730266AbgKELhx (ORCPT ); Thu, 5 Nov 2020 06:37:53 -0500 Received: by mail-lj1-f196.google.com with SMTP id t13so1199883ljk.12; Thu, 05 Nov 2020 03:37:51 -0800 (PST) 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; bh=l6GNHxWenXClMpzDH8vAZfwF26Q3bXxn5PspaMcty4Y=; b=Kntr2hRb/Q37alBSYES+3BiQ2Q30Ux8kiGM1UEa33L4YDu4UFPsvpkqaeV1l2AupPW TGjzgDIyWTjAfAkBkcJH5+qw6QgnTDPSw9FVUhBTtkrfR0W1eq+6g7glkORgBQ8pSV23 guiox8TVnqt6V0wHX+dt5ZcAz5OQ33q6Uhw/rYAdSKb27lJjgUADCj/GD+HoELGhr13w TlqzZOXJDgUQopHQ3QHWZK2P91/iZX+vvYIVjU/DQ3vcrkuzrgrUYppafhSoSckms8Qq zA4aIcBH8jwn1idS59glIan6Oo00Wq/FVUbVozNXwAPyNZD9F+3cYLzGDfA5z3Pa7Z9z oxVA== X-Gm-Message-State: AOAM53130rMP91WiDkwUYxGDB49wiGeZmg55Sy4ZUIl/DmtkzE7Mu9h7 OIPyP476G7r2kYfV1DuhAYs= X-Google-Smtp-Source: ABdhPJx4kEGRJ3yy4aBPZCqAS4ORuF7w47nAJV1xwDvOv4Fl1RFNR9ZpKoMWKtHR+3nACK67ZaL2pQ== X-Received: by 2002:a2e:81d4:: with SMTP id s20mr692925ljg.396.1604576270595; Thu, 05 Nov 2020 03:37:50 -0800 (PST) Received: from localhost.localdomain (62-78-225-252.bb.dnainternet.fi. [62.78.225.252]) by smtp.gmail.com with ESMTPSA id u25sm154756lfo.198.2020.11.05.03.37.49 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 05 Nov 2020 03:37:49 -0800 (PST) Date: Thu, 5 Nov 2020 13:37:43 +0200 From: Matti Vaittinen To: matti.vaittinen@fi.rohmeurope.com, mazziesaccount@gmail.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 v5 1/4] dt_bindings: mfd: Add ROHM BD9576MUF and BD9573MUF PMICs Message-ID: <36f11c031ff2988015ba73808cabe7279c1a2f49.1604574431.git.matti.vaittinen@fi.rohmeurope.com> References: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: 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 Reviewed-by: Rob Herring --- .../bindings/mfd/rohm,bd9576-pmic.yaml | 123 ++++++++++++++++++ 1 file changed, 123 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..6483860da955 --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/rohm,bd9576-pmic.yaml @@ -0,0 +1,123 @@ +# 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 + + rohm,hw-timeout-ms: + maxItems: 2 + description: + Watchog timeout in milliseconds. If single value is given it is + the maximum timeout. Eg. if pinging watchdog is not done within this time + limit the watchdog will be triggered. If two values are given watchdog + is configured in "window mode". Then first value is limit for short-ping + Eg. if watchdog is pinged sooner than that the watchdog will trigger. + When two values is given the second value is the maximum timeout. + # (HW) minimum for short timeout is 2ms, maximum 220 ms. + # (HW) minimum for max timeout is 4ms, maximum 4416 ms. + + 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>; + rohm,hw-timeout-ms = <150>, <2300>; + + 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"; + }; + }; + }; + };