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[176.150.251.154]) by smtp.gmail.com with ESMTPSA id z1sm12502125wrw.28.2019.03.19.13.30.18 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 19 Mar 2019 13:30:18 -0700 (PDT) Subject: Re: [PATCH v2 06/11] arm64: dts: meson-g12a-x96-max: add regulators To: Martin Blumenstingl Cc: khilman@baylibre.com, linux-amlogic@lists.infradead.org, Guillaume La Roque , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org References: <20190318100458.5619-1-narmstrong@baylibre.com> <20190318100458.5619-7-narmstrong@baylibre.com> From: Neil Armstrong Openpgp: preference=signencrypt Autocrypt: addr=narmstrong@baylibre.com; prefer-encrypt=mutual; keydata= mQENBE1ZBs8BCAD78xVLsXPwV/2qQx2FaO/7mhWL0Qodw8UcQJnkrWmgTFRobtTWxuRx8WWP GTjuhvbleoQ5Cxjr+v+1ARGCH46MxFP5DwauzPekwJUD5QKZlaw/bURTLmS2id5wWi3lqVH4 BVF2WzvGyyeV1o4RTCYDnZ9VLLylJ9bneEaIs/7cjCEbipGGFlfIML3sfqnIvMAxIMZrvcl9 qPV2k+KQ7q+aXavU5W+yLNn7QtXUB530Zlk/d2ETgzQ5FLYYnUDAaRl+8JUTjc0CNOTpCeik 80TZcE6f8M76Xa6yU8VcNko94Ck7iB4vj70q76P/J7kt98hklrr85/3NU3oti3nrIHmHABEB AAG0KE5laWwgQXJtc3Ryb25nIDxuYXJtc3Ryb25nQGJheWxpYnJlLmNvbT6JATsEEwEKACUC GyMGCwkIBwMCBhUIAgkKCwQWAgMBAh4BAheABQJXDO2CAhkBAAoJEBaat7Gkz/iubGIH/iyk RqvgB62oKOFlgOTYCMkYpm2aAOZZLf6VKHKc7DoVwuUkjHfIRXdslbrxi4pk5VKU6ZP9AKsN NtMZntB8WrBTtkAZfZbTF7850uwd3eU5cN/7N1Q6g0JQihE7w4GlIkEpQ8vwSg5W7hkx3yQ6 2YzrUZh/b7QThXbNZ7xOeSEms014QXazx8+txR7jrGF3dYxBsCkotO/8DNtZ1R+aUvRfpKg5 ZgABTC0LmAQnuUUf2PHcKFAHZo5KrdO+tyfL+LgTUXIXkK+tenkLsAJ0cagz1EZ5gntuheLD YJuzS4zN+1Asmb9kVKxhjSQOcIh6g2tw7vaYJgL/OzJtZi6JlIW5AQ0ETVkGzwEIALyKDN/O GURaHBVzwjgYq+ZtifvekdrSNl8TIDH8g1xicBYpQTbPn6bbSZbdvfeQPNCcD4/EhXZuhQXM coJsQQQnO4vwVULmPGgtGf8PVc7dxKOeta+qUh6+SRh3vIcAUFHDT3f/Zdspz+e2E0hPV2hi SvICLk11qO6cyJE13zeNFoeY3ggrKY+IzbFomIZY4yG6xI99NIPEVE9lNBXBKIlewIyVlkOa YvJWSV+p5gdJXOvScNN1epm5YHmf9aE2ZjnqZGoMMtsyw18YoX9BqMFInxqYQQ3j/HpVgTSv mo5ea5qQDDUaCsaTf8UeDcwYOtgI8iL4oHcsGtUXoUk33HEAEQEAAYkBHwQYAQIACQUCTVkG zwIbDAAKCRAWmrexpM/4rrXiB/sGbkQ6itMrAIfnM7IbRuiSZS1unlySUVYu3SD6YBYnNi3G 5EpbwfBNuT3H8//rVvtOFK4OD8cRYkxXRQmTvqa33eDIHu/zr1HMKErm+2SD6PO9umRef8V8 2o2oaCLvf4WeIssFjwB0b6a12opuRP7yo3E3gTCSKmbUuLv1CtxKQF+fUV1cVaTPMyT25Od+ RC1K+iOR0F54oUJvJeq7fUzbn/KdlhA8XPGzwGRy4zcsPWvwnXgfe5tk680fEKZVwOZKIEuJ C3v+/yZpQzDvGYJvbyix0lHnrCzq43WefRHI5XTTQbM0WUIBIcGmq38+OgUsMYu4NzLu7uZF Acmp6h8guQINBFYnf6QBEADQ+wBYa+X2n/xIQz/RUoGHf84Jm+yTqRT43t7sO48/cBW9vAn9 GNwnJ3HRJWKATW0ZXrCr40ES/JqM1fUTfiFDB3VMdWpEfwOAT1zXS+0rX8yljgsWR1UvqyEP 3xN0M/40Zk+rdmZKaZS8VQaXbveaiWMEmY7sBV3QvgOzB7UF2It1HwoCon5Y+PvyE3CguhBd 9iq5iEampkMIkbA3FFCpQFI5Ai3BywkLzbA3ZtnMXR8Qt9gFZtyXvFQrB+/6hDzEPnBGZOOx zkd/iIX59SxBuS38LMlhPPycbFNmtauOC0DNpXCv9ACgC9tFw3exER/xQgSpDVc4vrL2Cacr wmQp1k9E0W+9pk/l8S1jcHx03hgCxPtQLOIyEu9iIJb27TjcXNjiInd7Uea195NldIrndD+x 58/yU3X70qVY+eWbqzpdlwF1KRm6uV0ZOQhEhbi0FfKKgsYFgBIBchGqSOBsCbL35f9hK/JC 6LnGDtSHeJs+jd9/qJj4WqF3x8i0sncQ/gszSajdhnWrxraG3b7/9ldMLpKo/OoihfLaCxtv xYmtw8TGhlMaiOxjDrohmY1z7f3rf6njskoIXUO0nabun1nPAiV1dpjleg60s3OmVQeEpr3a K7gR1ljkemJzM9NUoRROPaT7nMlNYQL+IwuthJd6XQqwzp1jRTGG26J97wARAQABiQM+BBgB AgAJBQJWJ3+kAhsCAikJEBaat7Gkz/iuwV0gBBkBAgAGBQJWJ3+kAAoJEHfc29rIyEnRk6MQ AJDo0nxsadLpYB26FALZsWlN74rnFXth5dQVQ7SkipmyFWZhFL8fQ9OiIoxWhM6rSg9+C1w+ n45eByMg2b8H3mmQmyWztdI95OxSREKwbaXVapCcZnv52JRjlc3DoiiHqTZML5x1Z7lQ1T3F 8o9sKrbFO1WQw1+Nc91+MU0MGN0jtfZ0Tvn/ouEZrSXCE4K3oDGtj3AdC764yZVq6CPigCgs 6Ex80k6QlzCdVP3RKsnPO2xQXXPgyJPJlpD8bHHHW7OLfoR9DaBNympfcbQJeekQrTvyoASw EOTPKE6CVWrcQIztUp0WFTdRGgMK0cZB3Xfe6sOp24PQTHAKGtjTHNP/THomkH24Fum9K3iM /4Wh4V2eqGEgpdeSp5K+LdaNyNgaqzMOtt4HYk86LYLSHfFXywdlbGrY9+TqiJ+ZVW4trmui NIJCOku8SYansq34QzYM0x3UFRwff+45zNBEVzctSnremg1mVgrzOfXU8rt+4N1b2MxorPF8 619aCwVP7U16qNSBaqiAJr4e5SNEnoAq18+1Gp8QsFG0ARY8xp+qaKBByWES7lRi3QbqAKZf yOHS6gmYo9gBmuAhc65/VtHMJtxwjpUeN4Bcs9HUpDMDVHdfeRa73wM+wY5potfQ5zkSp0Jp bxnv/cRBH6+c43stTffprd//4Hgz+nJcCgZKtCYIAPkUxABC85ID2CidzbraErVACmRoizhT KR2OiqSLW2x4xdmSiFNcIWkWJB6Qdri0Fzs2dHe8etD1HYaht1ZhZ810s7QOL7JwypO8dscN KTEkyoTGn6cWj0CX+PeP4xp8AR8ot4d0BhtUY34UPzjE1/xyrQFAdnLd0PP4wXxdIUuRs0+n WLY9Aou/vC1LAdlaGsoTVzJ2gX4fkKQIWhX0WVk41BSFeDKQ3RQ2pnuzwedLO94Bf6X0G48O VsbXrP9BZ6snXyHfebPnno/te5XRqZTL9aJOytB/1iUna+1MAwBxGFPvqeEUUyT+gx1l3Acl ZaTUOEkgIor5losDrePdPgE= Organization: Baylibre Message-ID: <56b69e23-6844-eb89-7198-fd2ecf307391@baylibre.com> Date: Tue, 19 Mar 2019 21:30:18 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.5.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 19/03/2019 21:13, Martin Blumenstingl wrote: > Hi Neil, > > On Tue, Mar 19, 2019 at 9:29 AM Neil Armstrong wrote: >> >> On 18/03/2019 21:13, Martin Blumenstingl wrote: >>> Hi Neil, >>> >>> On Mon, Mar 18, 2019 at 11:06 AM Neil Armstrong wrote: >>>> >>>> From: Guillaume La Roque >>>> >>>> Add system regulators for the X96 Max Set-Top-Box. >>>> >>>> Still missing >>>> * VDD_EE (0.8V - PWM controlled) >>>> * VDD_CPU (PWM controlled) >>>> >>>> Signed-off-by: Guillaume La Roque >>>> Signed-off-by: Neil Armstrong >>>> --- >>>> .../boot/dts/amlogic/meson-g12a-x96-max.dts | 67 +++++++++++++++++++ >>>> 1 file changed, 67 insertions(+) >>>> >>>> diff --git a/arch/arm64/boot/dts/amlogic/meson-g12a-x96-max.dts b/arch/arm64/boot/dts/amlogic/meson-g12a-x96-max.dts >>>> index 0edbd00b358f..5c37930b09e2 100644 >>>> --- a/arch/arm64/boot/dts/amlogic/meson-g12a-x96-max.dts >>>> +++ b/arch/arm64/boot/dts/amlogic/meson-g12a-x96-max.dts >>> [...] >>>> + vcc_5v: regulator-vcc_5v { >>>> + compatible = "regulator-fixed"; >>>> + regulator-name = "VCC_5V"; >>>> + regulator-min-microvolt = <5000000>; >>>> + regulator-max-microvolt = <5000000>; >>>> + vin-supply = <&dc_in>; >>>> + >>>> + gpio = <&gpio GPIOH_8 GPIO_OPEN_DRAIN>; >>>> + enable-active-high; >>> is there any way to test whether this GPIO is the right one? >>> I couldn't find a reference to a GPIOH_8 regulator in >>> buildroot_openlinux_kernel_4.9_fbdev_20180706 >> >> The x96 is based on the U212 reference design, and the GPIOH_8 controls the 5V_EN signal, >> but you are right, it's the wrong polarity here, it should be enable-active-low instead. >> (FYI The SEI510 does not use this at all, 5V is always enabled) >> >> The schematics describes : >> VCC5V_EN (GPIOH_8-Hiz OD): 5V_EN >> L: Enable >> Hiz: Disable > thank you for this explanation! > >> FYI, the GPIOH_8 is Open-Drain only, this means this pin cannot pull to TTL 1, only to TTL 0 >> or set as input. We need to add a way to describe this in the pinctrl driver somehow.... > as far as I understand the pinctrl driver changes would result in an > error when the GPIO is used with "active high" (making incompatible > drivers or .dts easier to see). is this correct? I don't have a clear view of that, since it's really GPIO related. I don't know if we can really disable non-opendrain support for a specific gpio. We will need to investigate ! Anyway, using GPIO_OPEN_DRAIN in DT is the correct way to handle these GPIO lines. Neil > >> I will send a fix on v3 >> >> I didn't notice because I power the board using a Type-A to Type-A connector, >> and the 5V from the USB port bypasses this regulator... > this is good to know. > I'm also powering some of my boards using a Type-A to Type-A > connector. I'll need to remember this and this whether boards are > still booting with the DC plug > > > Regards > Martin > 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=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_PASS 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 3F6FAC10F03 for ; Tue, 19 Mar 2019 20:30:29 +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 0DE4B2146E for ; Tue, 19 Mar 2019 20:30:29 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="AhPys7sQ"; dkim=fail reason="signature verification failed" (2048-bit key) header.d=baylibre-com.20150623.gappssmtp.com header.i=@baylibre-com.20150623.gappssmtp.com header.b="SjAxkf7c" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0DE4B2146E Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=baylibre.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=EQt5op6dlfbny5GDYjCwdfNZZgHYT1YtQEYWiRvW7M4=; b=AhPys7sQLFLa6m +TeKEj+ZQnfhTWRtGDJUv/XtXArnljePkguzdAbldnYKpZNJRixdqe/d4KsB6xOwz82KiWTK/a0Xc GqpWuexn/FEG2WNCNf4IL8knmgiwPlJimTEYg77NaRxQsSVV8/JZP09RlCMfxFRDdHj6FkG1Dz5k6 KqzZ8OMc1nPq5vb7pUPE2Y4SMO+5rVdWjOwq3AWGjNI1v3SIXPJXdhzyRtLMMTsFV0j0piO1Y6S/u ZDvmMZXKqNrtLhqQ1dKOk/pZsVC0ya5bOjbx9Cd6sisW69noN4jXcy/gLE0ycnB2vy6oPgU3DCf1V bTIfd8Vh1g4E5wnpZObw==; 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 1h6LNR-0004tH-Dl; Tue, 19 Mar 2019 20:30:25 +0000 Received: from mail-wm1-x344.google.com ([2a00:1450:4864:20::344]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1h6LNN-0004rs-Jx for linux-arm-kernel@lists.infradead.org; Tue, 19 Mar 2019 20:30:22 +0000 Received: by mail-wm1-x344.google.com with SMTP id h18so9431307wml.1 for ; Tue, 19 Mar 2019 13:30:21 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=baylibre-com.20150623.gappssmtp.com; s=20150623; h=subject:to:cc:references:from:openpgp:autocrypt:organization :message-id:date:user-agent:mime-version:in-reply-to :content-language:content-transfer-encoding; bh=bSLQ8FK4Z1ngI7JlYt25VxWOyR3pz1WKo9ZRMM3iPO4=; b=SjAxkf7ch9JAWR3fdQuROTs9aIl4ZU0v/uFi4Ht3Mt9hEURDrx+0eqabju7E23p0vP eRno6WQoSy6njvlDOGVUuM6gcrkcwlK+gn2jB5nLJofhRVnm+Tb6ovTTUaXAuYTYdrrl bajEvqBauj3Bmo2VdtuWC16PkLoLEK7J3JxNqlMq7x99t8ghvZ9QGNJqGTxAHo+4gZN4 S7aQ5ibh68zBUf++hRg0Pq6iDOyB+iNhCEpySyXw+XMQXUtX/HcfY4lI6x0RO1ILzNz+ kuHN/yxgZDy6/wsJp2D2H/llKIvM2oZEgxHfC6mBkFbeq6KNXffw6fFg/JkNCZxLFDYY 0qgg== 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 :organization:message-id:date:user-agent:mime-version:in-reply-to :content-language:content-transfer-encoding; bh=bSLQ8FK4Z1ngI7JlYt25VxWOyR3pz1WKo9ZRMM3iPO4=; b=tAbfaTL7dQhGbix5qQdDJ+GYqEdI9PXWcWo6aLbNoAHNctoW7MKcaYrcryInprKv+O nO5t+6vIN5phOReAR8qiPTPxvjetZlKx7tAZV0LaaHKGKZC+ln66FZbIuLeJzW++m0Nu OCdSBlc4ZrTm7Cc+8BH29W6vuKyFsUEDd2XVSt9O57Ci1GC4lav+6FZhOgSzy6tFGWT5 8ezWQLnqSSJHRt1NIqpsQYtuDQInHs6v+f1fxD/Hv6VC0nE6LZDPuogt56GfGDKAcPhE r2ySKEJdi+xc+zhGvYyr7MnpXDJEWLz9DVYMlMlezC4hBnyua5O93AFA9z+Wxf3Iu0uM mrXw== X-Gm-Message-State: APjAAAXZ0bIBxt7R5BWsh35imtZVR5b3kW32VYSpJDGeV7H1grO2vwh8 BIVgj2NRGnuQOxoMDd3Lc0KQ56KAltlf1ZrW X-Google-Smtp-Source: APXvYqw2lyJLq4DbMOD857Wq8c+XlMfaYDGUKjb8YX5rz2XG1CemxXU1tLcorCP6wF2g07RxtItHwQ== X-Received: by 2002:a1c:a8d3:: with SMTP id r202mr5422527wme.106.1553027419681; Tue, 19 Mar 2019 13:30:19 -0700 (PDT) Received: from [192.168.1.62] (176-150-251-154.abo.bbox.fr. [176.150.251.154]) by smtp.gmail.com with ESMTPSA id z1sm12502125wrw.28.2019.03.19.13.30.18 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 19 Mar 2019 13:30:18 -0700 (PDT) Subject: Re: [PATCH v2 06/11] arm64: dts: meson-g12a-x96-max: add regulators To: Martin Blumenstingl References: <20190318100458.5619-1-narmstrong@baylibre.com> <20190318100458.5619-7-narmstrong@baylibre.com> From: Neil Armstrong Openpgp: preference=signencrypt Autocrypt: addr=narmstrong@baylibre.com; prefer-encrypt=mutual; keydata= mQENBE1ZBs8BCAD78xVLsXPwV/2qQx2FaO/7mhWL0Qodw8UcQJnkrWmgTFRobtTWxuRx8WWP GTjuhvbleoQ5Cxjr+v+1ARGCH46MxFP5DwauzPekwJUD5QKZlaw/bURTLmS2id5wWi3lqVH4 BVF2WzvGyyeV1o4RTCYDnZ9VLLylJ9bneEaIs/7cjCEbipGGFlfIML3sfqnIvMAxIMZrvcl9 qPV2k+KQ7q+aXavU5W+yLNn7QtXUB530Zlk/d2ETgzQ5FLYYnUDAaRl+8JUTjc0CNOTpCeik 80TZcE6f8M76Xa6yU8VcNko94Ck7iB4vj70q76P/J7kt98hklrr85/3NU3oti3nrIHmHABEB AAG0KE5laWwgQXJtc3Ryb25nIDxuYXJtc3Ryb25nQGJheWxpYnJlLmNvbT6JATsEEwEKACUC GyMGCwkIBwMCBhUIAgkKCwQWAgMBAh4BAheABQJXDO2CAhkBAAoJEBaat7Gkz/iubGIH/iyk RqvgB62oKOFlgOTYCMkYpm2aAOZZLf6VKHKc7DoVwuUkjHfIRXdslbrxi4pk5VKU6ZP9AKsN NtMZntB8WrBTtkAZfZbTF7850uwd3eU5cN/7N1Q6g0JQihE7w4GlIkEpQ8vwSg5W7hkx3yQ6 2YzrUZh/b7QThXbNZ7xOeSEms014QXazx8+txR7jrGF3dYxBsCkotO/8DNtZ1R+aUvRfpKg5 ZgABTC0LmAQnuUUf2PHcKFAHZo5KrdO+tyfL+LgTUXIXkK+tenkLsAJ0cagz1EZ5gntuheLD YJuzS4zN+1Asmb9kVKxhjSQOcIh6g2tw7vaYJgL/OzJtZi6JlIW5AQ0ETVkGzwEIALyKDN/O GURaHBVzwjgYq+ZtifvekdrSNl8TIDH8g1xicBYpQTbPn6bbSZbdvfeQPNCcD4/EhXZuhQXM coJsQQQnO4vwVULmPGgtGf8PVc7dxKOeta+qUh6+SRh3vIcAUFHDT3f/Zdspz+e2E0hPV2hi SvICLk11qO6cyJE13zeNFoeY3ggrKY+IzbFomIZY4yG6xI99NIPEVE9lNBXBKIlewIyVlkOa YvJWSV+p5gdJXOvScNN1epm5YHmf9aE2ZjnqZGoMMtsyw18YoX9BqMFInxqYQQ3j/HpVgTSv mo5ea5qQDDUaCsaTf8UeDcwYOtgI8iL4oHcsGtUXoUk33HEAEQEAAYkBHwQYAQIACQUCTVkG zwIbDAAKCRAWmrexpM/4rrXiB/sGbkQ6itMrAIfnM7IbRuiSZS1unlySUVYu3SD6YBYnNi3G 5EpbwfBNuT3H8//rVvtOFK4OD8cRYkxXRQmTvqa33eDIHu/zr1HMKErm+2SD6PO9umRef8V8 2o2oaCLvf4WeIssFjwB0b6a12opuRP7yo3E3gTCSKmbUuLv1CtxKQF+fUV1cVaTPMyT25Od+ RC1K+iOR0F54oUJvJeq7fUzbn/KdlhA8XPGzwGRy4zcsPWvwnXgfe5tk680fEKZVwOZKIEuJ C3v+/yZpQzDvGYJvbyix0lHnrCzq43WefRHI5XTTQbM0WUIBIcGmq38+OgUsMYu4NzLu7uZF Acmp6h8guQINBFYnf6QBEADQ+wBYa+X2n/xIQz/RUoGHf84Jm+yTqRT43t7sO48/cBW9vAn9 GNwnJ3HRJWKATW0ZXrCr40ES/JqM1fUTfiFDB3VMdWpEfwOAT1zXS+0rX8yljgsWR1UvqyEP 3xN0M/40Zk+rdmZKaZS8VQaXbveaiWMEmY7sBV3QvgOzB7UF2It1HwoCon5Y+PvyE3CguhBd 9iq5iEampkMIkbA3FFCpQFI5Ai3BywkLzbA3ZtnMXR8Qt9gFZtyXvFQrB+/6hDzEPnBGZOOx zkd/iIX59SxBuS38LMlhPPycbFNmtauOC0DNpXCv9ACgC9tFw3exER/xQgSpDVc4vrL2Cacr wmQp1k9E0W+9pk/l8S1jcHx03hgCxPtQLOIyEu9iIJb27TjcXNjiInd7Uea195NldIrndD+x 58/yU3X70qVY+eWbqzpdlwF1KRm6uV0ZOQhEhbi0FfKKgsYFgBIBchGqSOBsCbL35f9hK/JC 6LnGDtSHeJs+jd9/qJj4WqF3x8i0sncQ/gszSajdhnWrxraG3b7/9ldMLpKo/OoihfLaCxtv xYmtw8TGhlMaiOxjDrohmY1z7f3rf6njskoIXUO0nabun1nPAiV1dpjleg60s3OmVQeEpr3a K7gR1ljkemJzM9NUoRROPaT7nMlNYQL+IwuthJd6XQqwzp1jRTGG26J97wARAQABiQM+BBgB AgAJBQJWJ3+kAhsCAikJEBaat7Gkz/iuwV0gBBkBAgAGBQJWJ3+kAAoJEHfc29rIyEnRk6MQ AJDo0nxsadLpYB26FALZsWlN74rnFXth5dQVQ7SkipmyFWZhFL8fQ9OiIoxWhM6rSg9+C1w+ n45eByMg2b8H3mmQmyWztdI95OxSREKwbaXVapCcZnv52JRjlc3DoiiHqTZML5x1Z7lQ1T3F 8o9sKrbFO1WQw1+Nc91+MU0MGN0jtfZ0Tvn/ouEZrSXCE4K3oDGtj3AdC764yZVq6CPigCgs 6Ex80k6QlzCdVP3RKsnPO2xQXXPgyJPJlpD8bHHHW7OLfoR9DaBNympfcbQJeekQrTvyoASw EOTPKE6CVWrcQIztUp0WFTdRGgMK0cZB3Xfe6sOp24PQTHAKGtjTHNP/THomkH24Fum9K3iM /4Wh4V2eqGEgpdeSp5K+LdaNyNgaqzMOtt4HYk86LYLSHfFXywdlbGrY9+TqiJ+ZVW4trmui NIJCOku8SYansq34QzYM0x3UFRwff+45zNBEVzctSnremg1mVgrzOfXU8rt+4N1b2MxorPF8 619aCwVP7U16qNSBaqiAJr4e5SNEnoAq18+1Gp8QsFG0ARY8xp+qaKBByWES7lRi3QbqAKZf yOHS6gmYo9gBmuAhc65/VtHMJtxwjpUeN4Bcs9HUpDMDVHdfeRa73wM+wY5potfQ5zkSp0Jp bxnv/cRBH6+c43stTffprd//4Hgz+nJcCgZKtCYIAPkUxABC85ID2CidzbraErVACmRoizhT KR2OiqSLW2x4xdmSiFNcIWkWJB6Qdri0Fzs2dHe8etD1HYaht1ZhZ810s7QOL7JwypO8dscN KTEkyoTGn6cWj0CX+PeP4xp8AR8ot4d0BhtUY34UPzjE1/xyrQFAdnLd0PP4wXxdIUuRs0+n WLY9Aou/vC1LAdlaGsoTVzJ2gX4fkKQIWhX0WVk41BSFeDKQ3RQ2pnuzwedLO94Bf6X0G48O VsbXrP9BZ6snXyHfebPnno/te5XRqZTL9aJOytB/1iUna+1MAwBxGFPvqeEUUyT+gx1l3Acl ZaTUOEkgIor5losDrePdPgE= Organization: Baylibre Message-ID: <56b69e23-6844-eb89-7198-fd2ecf307391@baylibre.com> Date: Tue, 19 Mar 2019 21:30:18 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.5.1 MIME-Version: 1.0 In-Reply-To: Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190319_133021_654441_D744B319 X-CRM114-Status: GOOD ( 23.12 ) 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: khilman@baylibre.com, Guillaume La Roque , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-amlogic@lists.infradead.org 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 19/03/2019 21:13, Martin Blumenstingl wrote: > Hi Neil, > > On Tue, Mar 19, 2019 at 9:29 AM Neil Armstrong wrote: >> >> On 18/03/2019 21:13, Martin Blumenstingl wrote: >>> Hi Neil, >>> >>> On Mon, Mar 18, 2019 at 11:06 AM Neil Armstrong wrote: >>>> >>>> From: Guillaume La Roque >>>> >>>> Add system regulators for the X96 Max Set-Top-Box. >>>> >>>> Still missing >>>> * VDD_EE (0.8V - PWM controlled) >>>> * VDD_CPU (PWM controlled) >>>> >>>> Signed-off-by: Guillaume La Roque >>>> Signed-off-by: Neil Armstrong >>>> --- >>>> .../boot/dts/amlogic/meson-g12a-x96-max.dts | 67 +++++++++++++++++++ >>>> 1 file changed, 67 insertions(+) >>>> >>>> diff --git a/arch/arm64/boot/dts/amlogic/meson-g12a-x96-max.dts b/arch/arm64/boot/dts/amlogic/meson-g12a-x96-max.dts >>>> index 0edbd00b358f..5c37930b09e2 100644 >>>> --- a/arch/arm64/boot/dts/amlogic/meson-g12a-x96-max.dts >>>> +++ b/arch/arm64/boot/dts/amlogic/meson-g12a-x96-max.dts >>> [...] >>>> + vcc_5v: regulator-vcc_5v { >>>> + compatible = "regulator-fixed"; >>>> + regulator-name = "VCC_5V"; >>>> + regulator-min-microvolt = <5000000>; >>>> + regulator-max-microvolt = <5000000>; >>>> + vin-supply = <&dc_in>; >>>> + >>>> + gpio = <&gpio GPIOH_8 GPIO_OPEN_DRAIN>; >>>> + enable-active-high; >>> is there any way to test whether this GPIO is the right one? >>> I couldn't find a reference to a GPIOH_8 regulator in >>> buildroot_openlinux_kernel_4.9_fbdev_20180706 >> >> The x96 is based on the U212 reference design, and the GPIOH_8 controls the 5V_EN signal, >> but you are right, it's the wrong polarity here, it should be enable-active-low instead. >> (FYI The SEI510 does not use this at all, 5V is always enabled) >> >> The schematics describes : >> VCC5V_EN (GPIOH_8-Hiz OD): 5V_EN >> L: Enable >> Hiz: Disable > thank you for this explanation! > >> FYI, the GPIOH_8 is Open-Drain only, this means this pin cannot pull to TTL 1, only to TTL 0 >> or set as input. We need to add a way to describe this in the pinctrl driver somehow.... > as far as I understand the pinctrl driver changes would result in an > error when the GPIO is used with "active high" (making incompatible > drivers or .dts easier to see). is this correct? I don't have a clear view of that, since it's really GPIO related. I don't know if we can really disable non-opendrain support for a specific gpio. We will need to investigate ! Anyway, using GPIO_OPEN_DRAIN in DT is the correct way to handle these GPIO lines. Neil > >> I will send a fix on v3 >> >> I didn't notice because I power the board using a Type-A to Type-A connector, >> and the 5V from the USB port bypasses this regulator... > this is good to know. > I'm also powering some of my boards using a Type-A to Type-A > connector. I'll need to remember this and this whether boards are > still booting with the DC plug > > > Regards > Martin > _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel 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=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_PASS 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 EECECC43381 for ; Tue, 19 Mar 2019 20:30:28 +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 BC33A2082F for ; Tue, 19 Mar 2019 20:30:28 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="NFTfvU/S"; dkim=fail reason="signature verification failed" (2048-bit key) header.d=baylibre-com.20150623.gappssmtp.com header.i=@baylibre-com.20150623.gappssmtp.com header.b="SjAxkf7c" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org BC33A2082F Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=baylibre.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-amlogic-bounces+linux-amlogic=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=islB+fVdNXCwCpdAmPs27RFlAzvHe+gw68w/lS+IKmk=; b=NFTfvU/SQ5Q/Q/ iXEyqUksMyHlYjX8OkPjdy1GNAH+uQOH5KY5m6PYQ0zeDck//kmzQbyNpLbAjXWaC44XnPaTY+i6O zmE18i6vMreCVjWhHZk4McbUGGl2TtsGjie9Jec0o6TJtrA0R8NFJueyA/ENXlConOeeuGmoUDUbm t1n4mnAcfSklIno6D4rpxOsj8vPkPn8E5zjavyn1VGCKcaY0EgGvajA0p6uKjCcvYAxMk3RlyB/w5 CFcwuHUQrxxUZ3aQZPl7VIo/fOr+B6E++NGjA+26B+fOqjLDdCgFP3myCxBVnAs1hIaol19PhQVrE K/2GimEZALILMuvUYMyw==; 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 1h6LNP-0004sX-TQ; Tue, 19 Mar 2019 20:30:23 +0000 Received: from mail-wm1-x342.google.com ([2a00:1450:4864:20::342]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1h6LNN-0004rr-8D for linux-amlogic@lists.infradead.org; Tue, 19 Mar 2019 20:30:22 +0000 Received: by mail-wm1-x342.google.com with SMTP id v14so9334180wmf.2 for ; Tue, 19 Mar 2019 13:30:21 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=baylibre-com.20150623.gappssmtp.com; s=20150623; h=subject:to:cc:references:from:openpgp:autocrypt:organization :message-id:date:user-agent:mime-version:in-reply-to :content-language:content-transfer-encoding; bh=bSLQ8FK4Z1ngI7JlYt25VxWOyR3pz1WKo9ZRMM3iPO4=; b=SjAxkf7ch9JAWR3fdQuROTs9aIl4ZU0v/uFi4Ht3Mt9hEURDrx+0eqabju7E23p0vP eRno6WQoSy6njvlDOGVUuM6gcrkcwlK+gn2jB5nLJofhRVnm+Tb6ovTTUaXAuYTYdrrl bajEvqBauj3Bmo2VdtuWC16PkLoLEK7J3JxNqlMq7x99t8ghvZ9QGNJqGTxAHo+4gZN4 S7aQ5ibh68zBUf++hRg0Pq6iDOyB+iNhCEpySyXw+XMQXUtX/HcfY4lI6x0RO1ILzNz+ kuHN/yxgZDy6/wsJp2D2H/llKIvM2oZEgxHfC6mBkFbeq6KNXffw6fFg/JkNCZxLFDYY 0qgg== 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 :organization:message-id:date:user-agent:mime-version:in-reply-to :content-language:content-transfer-encoding; bh=bSLQ8FK4Z1ngI7JlYt25VxWOyR3pz1WKo9ZRMM3iPO4=; b=FLki0K8pgpECelOzQt7HwzI6NLLQG/qGcrykbMQkCfsq497kLq+t361s349YdWnay+ ZF8QKGKLvD4V00VLpQLRmcgD2ufuhKcBf5B8fvi+TkykyynZhi8CvQ3XkSnVWWmP+7j9 ik/OPGaKGeGfLI7pVLkcMG6b63P8NHiB6aaqHOwZDYbI1UT9zLJwqt6Eq5in9ns25js8 Kk81/pTpUkvHl/weoqVQnGPof14zZFZRPbPz3J9dGWTqZhHO4IuQyMrvcCyBok3wiH37 qMvuBa0j9n4mssXtb7mgQi5C5lkhEn97zZMTCHlAoPOe9fI8eQnBEqXJH4g2xb24zWVw nVZw== X-Gm-Message-State: APjAAAU2hAV41MTidFHxcOn8Re0GAeKhjIKWkXSPpw3VeMJZ2ZT5CN11 TZ3J0Qy6O+yOVYjroY7B9in/gg== X-Google-Smtp-Source: APXvYqw2lyJLq4DbMOD857Wq8c+XlMfaYDGUKjb8YX5rz2XG1CemxXU1tLcorCP6wF2g07RxtItHwQ== X-Received: by 2002:a1c:a8d3:: with SMTP id r202mr5422527wme.106.1553027419681; Tue, 19 Mar 2019 13:30:19 -0700 (PDT) Received: from [192.168.1.62] (176-150-251-154.abo.bbox.fr. [176.150.251.154]) by smtp.gmail.com with ESMTPSA id z1sm12502125wrw.28.2019.03.19.13.30.18 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 19 Mar 2019 13:30:18 -0700 (PDT) Subject: Re: [PATCH v2 06/11] arm64: dts: meson-g12a-x96-max: add regulators To: Martin Blumenstingl References: <20190318100458.5619-1-narmstrong@baylibre.com> <20190318100458.5619-7-narmstrong@baylibre.com> From: Neil Armstrong Openpgp: preference=signencrypt Autocrypt: addr=narmstrong@baylibre.com; prefer-encrypt=mutual; keydata= mQENBE1ZBs8BCAD78xVLsXPwV/2qQx2FaO/7mhWL0Qodw8UcQJnkrWmgTFRobtTWxuRx8WWP GTjuhvbleoQ5Cxjr+v+1ARGCH46MxFP5DwauzPekwJUD5QKZlaw/bURTLmS2id5wWi3lqVH4 BVF2WzvGyyeV1o4RTCYDnZ9VLLylJ9bneEaIs/7cjCEbipGGFlfIML3sfqnIvMAxIMZrvcl9 qPV2k+KQ7q+aXavU5W+yLNn7QtXUB530Zlk/d2ETgzQ5FLYYnUDAaRl+8JUTjc0CNOTpCeik 80TZcE6f8M76Xa6yU8VcNko94Ck7iB4vj70q76P/J7kt98hklrr85/3NU3oti3nrIHmHABEB AAG0KE5laWwgQXJtc3Ryb25nIDxuYXJtc3Ryb25nQGJheWxpYnJlLmNvbT6JATsEEwEKACUC GyMGCwkIBwMCBhUIAgkKCwQWAgMBAh4BAheABQJXDO2CAhkBAAoJEBaat7Gkz/iubGIH/iyk RqvgB62oKOFlgOTYCMkYpm2aAOZZLf6VKHKc7DoVwuUkjHfIRXdslbrxi4pk5VKU6ZP9AKsN NtMZntB8WrBTtkAZfZbTF7850uwd3eU5cN/7N1Q6g0JQihE7w4GlIkEpQ8vwSg5W7hkx3yQ6 2YzrUZh/b7QThXbNZ7xOeSEms014QXazx8+txR7jrGF3dYxBsCkotO/8DNtZ1R+aUvRfpKg5 ZgABTC0LmAQnuUUf2PHcKFAHZo5KrdO+tyfL+LgTUXIXkK+tenkLsAJ0cagz1EZ5gntuheLD YJuzS4zN+1Asmb9kVKxhjSQOcIh6g2tw7vaYJgL/OzJtZi6JlIW5AQ0ETVkGzwEIALyKDN/O GURaHBVzwjgYq+ZtifvekdrSNl8TIDH8g1xicBYpQTbPn6bbSZbdvfeQPNCcD4/EhXZuhQXM coJsQQQnO4vwVULmPGgtGf8PVc7dxKOeta+qUh6+SRh3vIcAUFHDT3f/Zdspz+e2E0hPV2hi SvICLk11qO6cyJE13zeNFoeY3ggrKY+IzbFomIZY4yG6xI99NIPEVE9lNBXBKIlewIyVlkOa YvJWSV+p5gdJXOvScNN1epm5YHmf9aE2ZjnqZGoMMtsyw18YoX9BqMFInxqYQQ3j/HpVgTSv mo5ea5qQDDUaCsaTf8UeDcwYOtgI8iL4oHcsGtUXoUk33HEAEQEAAYkBHwQYAQIACQUCTVkG zwIbDAAKCRAWmrexpM/4rrXiB/sGbkQ6itMrAIfnM7IbRuiSZS1unlySUVYu3SD6YBYnNi3G 5EpbwfBNuT3H8//rVvtOFK4OD8cRYkxXRQmTvqa33eDIHu/zr1HMKErm+2SD6PO9umRef8V8 2o2oaCLvf4WeIssFjwB0b6a12opuRP7yo3E3gTCSKmbUuLv1CtxKQF+fUV1cVaTPMyT25Od+ RC1K+iOR0F54oUJvJeq7fUzbn/KdlhA8XPGzwGRy4zcsPWvwnXgfe5tk680fEKZVwOZKIEuJ C3v+/yZpQzDvGYJvbyix0lHnrCzq43WefRHI5XTTQbM0WUIBIcGmq38+OgUsMYu4NzLu7uZF Acmp6h8guQINBFYnf6QBEADQ+wBYa+X2n/xIQz/RUoGHf84Jm+yTqRT43t7sO48/cBW9vAn9 GNwnJ3HRJWKATW0ZXrCr40ES/JqM1fUTfiFDB3VMdWpEfwOAT1zXS+0rX8yljgsWR1UvqyEP 3xN0M/40Zk+rdmZKaZS8VQaXbveaiWMEmY7sBV3QvgOzB7UF2It1HwoCon5Y+PvyE3CguhBd 9iq5iEampkMIkbA3FFCpQFI5Ai3BywkLzbA3ZtnMXR8Qt9gFZtyXvFQrB+/6hDzEPnBGZOOx zkd/iIX59SxBuS38LMlhPPycbFNmtauOC0DNpXCv9ACgC9tFw3exER/xQgSpDVc4vrL2Cacr wmQp1k9E0W+9pk/l8S1jcHx03hgCxPtQLOIyEu9iIJb27TjcXNjiInd7Uea195NldIrndD+x 58/yU3X70qVY+eWbqzpdlwF1KRm6uV0ZOQhEhbi0FfKKgsYFgBIBchGqSOBsCbL35f9hK/JC 6LnGDtSHeJs+jd9/qJj4WqF3x8i0sncQ/gszSajdhnWrxraG3b7/9ldMLpKo/OoihfLaCxtv xYmtw8TGhlMaiOxjDrohmY1z7f3rf6njskoIXUO0nabun1nPAiV1dpjleg60s3OmVQeEpr3a K7gR1ljkemJzM9NUoRROPaT7nMlNYQL+IwuthJd6XQqwzp1jRTGG26J97wARAQABiQM+BBgB AgAJBQJWJ3+kAhsCAikJEBaat7Gkz/iuwV0gBBkBAgAGBQJWJ3+kAAoJEHfc29rIyEnRk6MQ AJDo0nxsadLpYB26FALZsWlN74rnFXth5dQVQ7SkipmyFWZhFL8fQ9OiIoxWhM6rSg9+C1w+ n45eByMg2b8H3mmQmyWztdI95OxSREKwbaXVapCcZnv52JRjlc3DoiiHqTZML5x1Z7lQ1T3F 8o9sKrbFO1WQw1+Nc91+MU0MGN0jtfZ0Tvn/ouEZrSXCE4K3oDGtj3AdC764yZVq6CPigCgs 6Ex80k6QlzCdVP3RKsnPO2xQXXPgyJPJlpD8bHHHW7OLfoR9DaBNympfcbQJeekQrTvyoASw EOTPKE6CVWrcQIztUp0WFTdRGgMK0cZB3Xfe6sOp24PQTHAKGtjTHNP/THomkH24Fum9K3iM /4Wh4V2eqGEgpdeSp5K+LdaNyNgaqzMOtt4HYk86LYLSHfFXywdlbGrY9+TqiJ+ZVW4trmui NIJCOku8SYansq34QzYM0x3UFRwff+45zNBEVzctSnremg1mVgrzOfXU8rt+4N1b2MxorPF8 619aCwVP7U16qNSBaqiAJr4e5SNEnoAq18+1Gp8QsFG0ARY8xp+qaKBByWES7lRi3QbqAKZf yOHS6gmYo9gBmuAhc65/VtHMJtxwjpUeN4Bcs9HUpDMDVHdfeRa73wM+wY5potfQ5zkSp0Jp bxnv/cRBH6+c43stTffprd//4Hgz+nJcCgZKtCYIAPkUxABC85ID2CidzbraErVACmRoizhT KR2OiqSLW2x4xdmSiFNcIWkWJB6Qdri0Fzs2dHe8etD1HYaht1ZhZ810s7QOL7JwypO8dscN KTEkyoTGn6cWj0CX+PeP4xp8AR8ot4d0BhtUY34UPzjE1/xyrQFAdnLd0PP4wXxdIUuRs0+n WLY9Aou/vC1LAdlaGsoTVzJ2gX4fkKQIWhX0WVk41BSFeDKQ3RQ2pnuzwedLO94Bf6X0G48O VsbXrP9BZ6snXyHfebPnno/te5XRqZTL9aJOytB/1iUna+1MAwBxGFPvqeEUUyT+gx1l3Acl ZaTUOEkgIor5losDrePdPgE= Organization: Baylibre Message-ID: <56b69e23-6844-eb89-7198-fd2ecf307391@baylibre.com> Date: Tue, 19 Mar 2019 21:30:18 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.5.1 MIME-Version: 1.0 In-Reply-To: Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190319_133021_325150_1D4D0D22 X-CRM114-Status: GOOD ( 21.64 ) X-BeenThere: linux-amlogic@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: khilman@baylibre.com, Guillaume La Roque , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-amlogic@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-amlogic" Errors-To: linux-amlogic-bounces+linux-amlogic=archiver.kernel.org@lists.infradead.org On 19/03/2019 21:13, Martin Blumenstingl wrote: > Hi Neil, > > On Tue, Mar 19, 2019 at 9:29 AM Neil Armstrong wrote: >> >> On 18/03/2019 21:13, Martin Blumenstingl wrote: >>> Hi Neil, >>> >>> On Mon, Mar 18, 2019 at 11:06 AM Neil Armstrong wrote: >>>> >>>> From: Guillaume La Roque >>>> >>>> Add system regulators for the X96 Max Set-Top-Box. >>>> >>>> Still missing >>>> * VDD_EE (0.8V - PWM controlled) >>>> * VDD_CPU (PWM controlled) >>>> >>>> Signed-off-by: Guillaume La Roque >>>> Signed-off-by: Neil Armstrong >>>> --- >>>> .../boot/dts/amlogic/meson-g12a-x96-max.dts | 67 +++++++++++++++++++ >>>> 1 file changed, 67 insertions(+) >>>> >>>> diff --git a/arch/arm64/boot/dts/amlogic/meson-g12a-x96-max.dts b/arch/arm64/boot/dts/amlogic/meson-g12a-x96-max.dts >>>> index 0edbd00b358f..5c37930b09e2 100644 >>>> --- a/arch/arm64/boot/dts/amlogic/meson-g12a-x96-max.dts >>>> +++ b/arch/arm64/boot/dts/amlogic/meson-g12a-x96-max.dts >>> [...] >>>> + vcc_5v: regulator-vcc_5v { >>>> + compatible = "regulator-fixed"; >>>> + regulator-name = "VCC_5V"; >>>> + regulator-min-microvolt = <5000000>; >>>> + regulator-max-microvolt = <5000000>; >>>> + vin-supply = <&dc_in>; >>>> + >>>> + gpio = <&gpio GPIOH_8 GPIO_OPEN_DRAIN>; >>>> + enable-active-high; >>> is there any way to test whether this GPIO is the right one? >>> I couldn't find a reference to a GPIOH_8 regulator in >>> buildroot_openlinux_kernel_4.9_fbdev_20180706 >> >> The x96 is based on the U212 reference design, and the GPIOH_8 controls the 5V_EN signal, >> but you are right, it's the wrong polarity here, it should be enable-active-low instead. >> (FYI The SEI510 does not use this at all, 5V is always enabled) >> >> The schematics describes : >> VCC5V_EN (GPIOH_8-Hiz OD): 5V_EN >> L: Enable >> Hiz: Disable > thank you for this explanation! > >> FYI, the GPIOH_8 is Open-Drain only, this means this pin cannot pull to TTL 1, only to TTL 0 >> or set as input. We need to add a way to describe this in the pinctrl driver somehow.... > as far as I understand the pinctrl driver changes would result in an > error when the GPIO is used with "active high" (making incompatible > drivers or .dts easier to see). is this correct? I don't have a clear view of that, since it's really GPIO related. I don't know if we can really disable non-opendrain support for a specific gpio. We will need to investigate ! Anyway, using GPIO_OPEN_DRAIN in DT is the correct way to handle these GPIO lines. Neil > >> I will send a fix on v3 >> >> I didn't notice because I power the board using a Type-A to Type-A connector, >> and the 5V from the USB port bypasses this regulator... > this is good to know. > I'm also powering some of my boards using a Type-A to Type-A > connector. I'll need to remember this and this whether boards are > still booting with the DC plug > > > Regards > Martin > _______________________________________________ linux-amlogic mailing list linux-amlogic@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-amlogic