From mboxrd@z Thu Jan 1 00:00:00 1970 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=-7.0 required=3.0 tests=DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED,DKIM_VALID,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,URIBL_BLOCKED autolearn=unavailable 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 92B34C43387 for ; Thu, 3 Jan 2019 19:31:48 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 5882A217F5 for ; Thu, 3 Jan 2019 19:31:48 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="mfZoCyKu"; dkim=fail reason="signature verification failed" (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="BJ+rSr8V" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5882A217F5 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:Date: Message-ID:From:References:To:Subject:Reply-To:Content-ID:Content-Description :Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=ZJNkA6XPpOEn9xSeNnFYn6bSfbI7jKBtp8BTICKNkRU=; b=mfZoCyKu1aS9aN zdnaB+I5md4lCeGhOo8+4DIonYy6te0Hu8cmi4zeMlLinrr3sfemYFLmBLI6KhOAa4WTJE+CFOkfm wFbhCOvDV4wyo6sdf5cM3pqnO7DWJOsxs6LEB+o7GVoN00R/ppjnFZN9erF7l6AKqntUyFNamXkO0 vqQxfvIGk6FOwC1GH/WzvjujAt1AlwvZ0oN2fWUdUofmEr8/svRKYmkx3zMff7oZH6AgQRmmh+AQ9 uCI5nzjzYDDJIRnd8g3HyfiwyqcMsMi/u8yy06A19d89xRMnzfvlEfSCjF/oEP3W+nEQK/E9ne8/s DaE4BUtI3y5BUfMm2byQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1gf8iS-00023N-W3; Thu, 03 Jan 2019 19:31:40 +0000 Received: from mail-yw1-xc42.google.com ([2607:f8b0:4864:20::c42]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1gf8iN-00022y-4V for linux-arm-kernel@lists.infradead.org; Thu, 03 Jan 2019 19:31:38 +0000 Received: by mail-yw1-xc42.google.com with SMTP id d190so13653985ywd.12 for ; Thu, 03 Jan 2019 11:31:34 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:cc:references:from:openpgp:autocrypt:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=xs22Cea2PrNQpDApl86Vw5dGBkwFpWseyAw0tz8dggg=; b=BJ+rSr8VnouiO/lupGHD/u08dRMbSvHtOdUAX0hXhSzQ4k6A3ED4gIsyoKnwIpYew5 Hd29wrMWnf0icjC6/gOjhREgRL4vu1SYerFb3ZNP/SzBkiK+BqMrZIoOPMas9SEYYQ93 iAnjMLNn7GgtHpku9uvldHQyWUId+PVktR3O5y1fsomAPeHnVdQ3K2ozwvOkGIeeVveI F9D/BI/qYoukPYwb467PTF/u6Tca49qWYkq0XJ+lZLCktaCbODydwwNh6QGwJuAdahMo Fus/xoW6AVozFDe6+QD262J5SpZ8pmjKo+QL/8USZTVNIutbeBwo7QjdRIK13ri9hrFX n1eg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:openpgp:autocrypt :message-id:date:user-agent:mime-version:in-reply-to :content-language:content-transfer-encoding; bh=xs22Cea2PrNQpDApl86Vw5dGBkwFpWseyAw0tz8dggg=; b=fcJNlFkOquyR0adKpYqjuxUi7K7H9cnLlQQr96iJaKw6G5b7QmDcmO+kPoyA0J25zm ARh3CpBI57YGjwZE8KlOxw44ItSP7fKyA8x07ypRIi9dYG+NVt0L3AJDRwJrCM5qrsWS ceMziZV/EREbGMwJheYRg4BGle7iUXu0cvVKGoB0OQd91F9KhenOJcWbddvPc1WDsf+l TFH3D5lK/V5RexztfExWhUEK1tcktVHTO/9f65/KkHwzBinHI4rXOHwTSgHrECXYfh4R Rbyu2L9zIyfL0jh/NFhbj17aOKeA9Dcc6eURTHsnAmgUYxFxX22cK+sS89B7fm6OTBY7 V5rw== X-Gm-Message-State: AA+aEWZAM85qFiC2js9bkirtqNljEFY2jlr69hrS4yl8fhh8YrIsUMhx gDIHNG9G219Y0HPGUZ2gnPojIwu3 X-Google-Smtp-Source: AFSGD/Wi1Rd8phbfJo7uDpUjB7omXc309SWTgq5WqpHXHDPhOfX4IDAk2LXHigWmUV1afpMVfT/Siw== X-Received: by 2002:a81:7d8a:: with SMTP id y132mr51229301ywc.501.1546543893312; Thu, 03 Jan 2019 11:31:33 -0800 (PST) Received: from [10.67.49.9] ([192.19.223.250]) by smtp.googlemail.com with ESMTPSA id p71sm22140390ywg.98.2019.01.03.11.31.31 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 03 Jan 2019 11:31:32 -0800 (PST) Subject: Re: [PATCH 1/2] dt-bindings: reset: Add document for Broadcom STB reset controller To: Rob Herring , Florian Fainelli References: <20181221013409.14324-1-f.fainelli@gmail.com> <20181221013409.14324-2-f.fainelli@gmail.com> <20190103174117.GA6613@bogus> <2a54c2cf-5595-ade5-fb29-40e8b6d3133e@gmail.com> <20190103191915.GB6613@bogus> From: Florian Fainelli Openpgp: preference=signencrypt Autocrypt: addr=f.fainelli@gmail.com; prefer-encrypt=mutual; keydata= mQGiBEjPuBIRBACW9MxSJU9fvEOCTnRNqG/13rAGsj+vJqontvoDSNxRgmafP8d3nesnqPyR xGlkaOSDuu09rxuW+69Y2f1TzjFuGpBk4ysWOR85O2Nx8AJ6fYGCoeTbovrNlGT1M9obSFGQ X3IzRnWoqlfudjTO5TKoqkbOgpYqIo5n1QbEjCCwCwCg3DOH/4ug2AUUlcIT9/l3pGvoRJ0E AICDzi3l7pmC5IWn2n1mvP5247urtHFs/uusE827DDj3K8Upn2vYiOFMBhGsxAk6YKV6IP0d ZdWX6fqkJJlu9cSDvWtO1hXeHIfQIE/xcqvlRH783KrihLcsmnBqOiS6rJDO2x1eAgC8meAX SAgsrBhcgGl2Rl5gh/jkeA5ykwbxA/9u1eEuL70Qzt5APJmqVXR+kWvrqdBVPoUNy/tQ8mYc nzJJ63ng3tHhnwHXZOu8hL4nqwlYHRa9eeglXYhBqja4ZvIvCEqSmEukfivk+DlIgVoOAJbh qIWgvr3SIEuR6ayY3f5j0f2ejUMYlYYnKdiHXFlF9uXm1ELrb0YX4GMHz7QnRmxvcmlhbiBG YWluZWxsaSA8Zi5mYWluZWxsaUBnbWFpbC5jb20+iGYEExECACYCGyMGCwkIBwMCBBUCCAME FgIDAQIeAQIXgAUCVF/S8QUJHlwd3wAKCRBhV5kVtWN2DvCVAJ4u4/bPF4P3jxb4qEY8I2gS 6hG0gACffNWlqJ2T4wSSn+3o7CCZNd7SLSC5BA0ESM+4EhAQAL/o09boR9D3Vk1Tt7+gpYr3 WQ6hgYVON905q2ndEoA2J0dQxJNRw3snabHDDzQBAcqOvdi7YidfBVdKi0wxHhSuRBfuOppu pdXkb7zxuPQuSveCLqqZWRQ+Cc2QgF7SBqgznbe6Ngout5qXY5Dcagk9LqFNGhJQzUGHAsIs hap1f0B1PoUyUNeEInV98D8Xd/edM3mhO9nRpUXRK9Bvt4iEZUXGuVtZLT52nK6Wv2EZ1TiT OiqZlf1P+vxYLBx9eKmabPdm3yjalhY8yr1S1vL0gSA/C6W1o/TowdieF1rWN/MYHlkpyj9c Rpc281gAO0AP3V1G00YzBEdYyi0gaJbCEQnq8Vz1vDXFxHzyhgGz7umBsVKmYwZgA8DrrB0M oaP35wuGR3RJcaG30AnJpEDkBYHznI2apxdcuTPOHZyEilIRrBGzDwGtAhldzlBoBwE3Z3MY 31TOpACu1ZpNOMysZ6xiE35pWkwc0KYm4hJA5GFfmWSN6DniimW3pmdDIiw4Ifcx8b3mFrRO BbDIW13E51j9RjbO/nAaK9ndZ5LRO1B/8Fwat7bLzmsCiEXOJY7NNpIEpkoNoEUfCcZwmLrU +eOTPzaF6drw6ayewEi5yzPg3TAT6FV3oBsNg3xlwU0gPK3v6gYPX5w9+ovPZ1/qqNfOrbsE FRuiSVsZQ5s3AAMFD/9XjlnnVDh9GX/r/6hjmr4U9tEsM+VQXaVXqZuHKaSmojOLUCP/YVQo 7IiYaNssCS4FCPe4yrL4FJJfJAsbeyDykMN7wAnBcOkbZ9BPJPNCbqU6dowLOiy8AuTYQ48m vIyQ4Ijnb6GTrtxIUDQeOBNuQC/gyyx3nbL/lVlHbxr4tb6YkhkO6shjXhQh7nQb33FjGO4P WU11Nr9i/qoV8QCo12MQEo244RRA6VMud06y/E449rWZFSTwGqb0FS0seTcYNvxt8PB2izX+ HZA8SL54j479ubxhfuoTu5nXdtFYFj5Lj5x34LKPx7MpgAmj0H7SDhpFWF2FzcC1bjiW9mjW HaKaX23Awt97AqQZXegbfkJwX2Y53ufq8Np3e1542lh3/mpiGSilCsaTahEGrHK+lIusl6mz Joil+u3k01ofvJMK0ZdzGUZ/aPMZ16LofjFA+MNxWrZFrkYmiGdv+LG45zSlZyIvzSiG2lKy kuVag+IijCIom78P9jRtB1q1Q5lwZp2TLAJlz92DmFwBg1hyFzwDADjZ2nrDxKUiybXIgZp9 aU2d++ptEGCVJOfEW4qpWCCLPbOT7XBr+g/4H3qWbs3j/cDDq7LuVYIe+wchy/iXEJaQVeTC y5arMQorqTFWlEOgRA8OP47L9knl9i4xuR0euV6DChDrguup2aJVU4hPBBgRAgAPAhsMBQJU X9LxBQkeXB3fAAoJEGFXmRW1Y3YOj4UAn3nrFLPZekMeqX5aD/aq/dsbXSfyAKC45Go0YyxV HGuUuzv+GKZ6nsysJ7kCDQRXG8fwARAA6q/pqBi5PjHcOAUgk2/2LR5LjjesK50bCaD4JuNc YDhFR7Vs108diBtsho3w8WRd9viOqDrhLJTroVckkk74OY8r+3t1E0Dd4wHWHQZsAeUvOwDM PQMqTUBFuMi6ydzTZpFA2wBR9x6ofl8Ax+zaGBcFrRlQnhsuXLnM1uuvS39+pmzIjasZBP2H UPk5ifigXcpelKmj6iskP3c8QN6x6GjUSmYx+xUfs/GNVSU1XOZn61wgPDbgINJd/THGdqiO iJxCLuTMqlSsmh1+E1dSdfYkCb93R/0ZHvMKWlAx7MnaFgBfsG8FqNtZu3PCLfizyVYYjXbV WO1A23riZKqwrSJAATo5iTS65BuYxrFsFNPrf7TitM8E76BEBZk0OZBvZxMuOs6Z1qI8YKVK UrHVGFq3NbuPWCdRul9SX3VfOunr9Gv0GABnJ0ET+K7nspax0xqq7zgnM71QEaiaH17IFYGS sG34V7Wo3vyQzsk7qLf9Ajno0DhJ+VX43g8+AjxOMNVrGCt9RNXSBVpyv2AMTlWCdJ5KI6V4 KEzWM4HJm7QlNKE6RPoBxJVbSQLPd9St3h7mxLcne4l7NK9eNgNnneT7QZL8fL//s9K8Ns1W t60uQNYvbhKDG7+/yLcmJgjF74XkGvxCmTA1rW2bsUriM533nG9gAOUFQjURkwI8jvMAEQEA AYkCaAQYEQIACQUCVxvH8AIbAgIpCRBhV5kVtWN2DsFdIAQZAQIABgUCVxvH8AAKCRCH0Jac RAcHBIkHD/9nmfog7X2ZXMzL9ktT++7x+W/QBrSTCTmq8PK+69+INN1ZDOrY8uz6htfTLV9+ e2W6G8/7zIvODuHk7r+yQ585XbplgP0V5Xc8iBHdBgXbqnY5zBrcH+Q/oQ2STalEvaGHqNoD UGyLQ/fiKoLZTPMur57Fy1c9rTuKiSdMgnT0FPfWVDfpR2Ds0gpqWePlRuRGOoCln5GnREA/ 2MW2rWf+CO9kbIR+66j8b4RUJqIK3dWn9xbENh/aqxfonGTCZQ2zC4sLd25DQA4w1itPo+f5 V/SQxuhnlQkTOCdJ7b/mby/pNRz1lsLkjnXueLILj7gNjwTabZXYtL16z24qkDTI1x3g98R/ xunb3/fQwR8FY5/zRvXJq5us/nLvIvOmVwZFkwXc+AF+LSIajqQz9XbXeIP/BDjlBNXRZNdo dVuSU51ENcMcilPr2EUnqEAqeczsCGpnvRCLfVQeSZr2L9N4svNhhfPOEscYhhpHTh0VPyxI pPBNKq+byuYPMyk3nj814NKhImK0O4gTyCK9b+gZAVvQcYAXvSouCnTZeJRrNHJFTgTgu6E0 caxTGgc5zzQHeX67eMzrGomG3ZnIxmd1sAbgvJUDaD2GrYlulfwGWwWyTNbWRvMighVdPkSF 6XFgQaosWxkV0OELLy2N485YrTr2Uq64VKyxpncLh50e2RnyAJ9Za0Dx0yyp44iD1OvHtkEI M5kY0ACeNhCZJvZ5g4C2Lc9fcTHu8jxmEkI= Message-ID: Date: Thu, 3 Jan 2019 11:31:22 -0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.2.1 MIME-Version: 1.0 In-Reply-To: <20190103191915.GB6613@bogus> Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190103_113137_189685_9C241A31 X-CRM114-Status: GOOD ( 21.80 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" , p.zabel@pengutronix.de, linux-kernel@vger.kernel.org, "maintainer:BROADCOM BCM7XXX ARM ARCHITECTURE" , Gregory Fong , Brian Norris , "moderated list:BROADCOM BCM7XXX ARM ARCHITECTURE" Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 1/3/19 11:19 AM, Rob Herring wrote: > On Thu, Jan 03, 2019 at 10:53:25AM -0800, Florian Fainelli wrote: >> On 1/3/19 9:41 AM, Rob Herring wrote: >>> On Thu, Dec 20, 2018 at 05:34:08PM -0800, Florian Fainelli wrote: >>>> Add a binding document for the Broadcom STB reset controller, also known >>>> as SW_INIT-style reset controller. >>>> >>>> Signed-off-by: Florian Fainelli >>>> --- >>>> .../devicetree/bindings/reset/brcm,reset.txt | 27 +++++++++++++++++++ >>>> 1 file changed, 27 insertions(+) >>>> create mode 100644 Documentation/devicetree/bindings/reset/brcm,reset.txt >>>> >>>> diff --git a/Documentation/devicetree/bindings/reset/brcm,reset.txt b/Documentation/devicetree/bindings/reset/brcm,reset.txt >>>> new file mode 100644 >>>> index 000000000000..6e5341b4f891 >>>> --- /dev/null >>>> +++ b/Documentation/devicetree/bindings/reset/brcm,reset.txt >>>> @@ -0,0 +1,27 @@ >>>> +Broadcom STB SW_INIT-style reset controller >>>> +=========================================== >>>> + >>>> +Broadcom STB SoCs have a SW_INIT-style reset controller with separate >>>> +SET/CLEAR/STATUS registers and possibly multiple banks, each of 32 bit >>>> +reset lines. >>>> + >>>> +Please also refer to reset.txt in this directory for common reset >>>> +controller binding usage. >>>> + >>>> +Required properties: >>>> +- compatible: should be brcm,brcmstb-reset >>>> +- reg: register base and length >>>> +- #reset-cells: must be set to 1 >>>> + >>>> +Example: >>>> + >>>> + reset: reset-controller@8404318 { >>>> + compatible = "brcm,brcmstb-reset"; >>>> + reg = <0x8404318 0x30>; >>> >>> Based on this address, should this be a sub-node of something else? Or >>> not even a sub-node and just make the parent be a reset provider? >> >> The reset controller is part of a larger "sundry" node which has a >> collection of functionality, from pinmux/pinctrl, reset controller, >> spare bits, chicken bits, anything the designers forgot to put somewhere >> else and decided to put there. >> >> If there is one thing consistent though is that given a set of 32-bit >> register groups, they have a self contained functionality such that you >> can break up the larger "sundry" space into smaller sub-blocks which >> have one an only one functionality. Do you think this warrants a >> different representation in Device Tree? > > With pinctrl in the mix, you're going to need sub-nodes anyways. So just > define what this is a sub-node of. pinctrl is not necessarily something I want the kernel to control, since we have a high level scripting language without our bootloader that makes sure pinctrl is properly configured from early boot on all the way to the kernel, and preserved across suspend/resume states. pinctrl-single does work, and was occasionally used. Everything else is typically muxes that the kernel does not need to touch/see/be aware of. > > Also, I'd prefer to have complete example for the "sundry" node and > child nodes than partial examples spread across the tree. I am afraid I can't provide that example because the sundry node is really changing from chip to chip, and there is a gazillion of things in there that the kernel typically does not even touch, like pinmuxing/pinctrl, various mux selections etc. I could provide the following example if that is what you are requesting?: sun-top-ctrl: simple-bus@8404000 { compatible = "brcm,brcmstb-sun-top-ctrl", "simple-bus"; reg = <0x8404000 0x708>; reset: reset-controller@318 { compatible = "brcm,brcmstb-reset"; reg = <0x318 0x30>; #reset-cells = <1>; }; }; Would that be what you expect to see? -- Florian _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel