From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="basi74Xq" Received: from mail-wm1-x32f.google.com (mail-wm1-x32f.google.com [IPv6:2a00:1450:4864:20::32f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4AB72E5 for ; Sun, 3 Dec 2023 08:49:28 -0800 (PST) Received: by mail-wm1-x32f.google.com with SMTP id 5b1f17b1804b1-40bda47b7c1so16661825e9.1 for ; Sun, 03 Dec 2023 08:49:28 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1701622167; x=1702226967; darn=vger.kernel.org; h=content-transfer-encoding:in-reply-to:autocrypt:from:references:cc :to:content-language:subject:user-agent:mime-version:date:message-id :from:to:cc:subject:date:message-id:reply-to; bh=wASE+vrAvx7yA+Wgbsvmor7M/LoIosYELxObbCq6jRQ=; b=basi74Xqy/RKPmI7cLq1SLkugkZIHUIscU0v7eeC8B7eHMbVHbijuqsqp7wuvuEWGI VMnZ9lhbUc2ETdE312DKOgy+NylNFE11d8OWBOY0OU/5w/bbF9PbYOX9/UOejjyBWzHE rB2wGc+4Xk+ChVbvT5I/1ST4NOeFoJ5K9JNv7f5+njy/TuQ1mD/kxFUGQl1gfF/D9Uba lBisweL9HzWkWnRdqeLGMqILwGj3nNs9kMorNGZGCKSTSCiT30w0X6tss3ZH4pqanBYj QeYZ179zqqw76mOUzfJp/UWoivKCsL2WSfRQXn/1oIhW5acPxc7BjiLNMfiqPBkwjdJj ra4Q== X-Google-DKIM-Signature: v=1; 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Sun, 03 Dec 2023 08:49:26 -0800 (PST) Received: from [192.168.1.20] ([178.197.223.109]) by smtp.gmail.com with ESMTPSA id g10-20020a05600c4eca00b0040596352951sm15821817wmq.5.2023.12.03.08.49.24 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 03 Dec 2023 08:49:25 -0800 (PST) Message-ID: Date: Sun, 3 Dec 2023 17:49:23 +0100 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 01/10] dt-bindings: display: bridge: tc358775: make stby gpio and vdd supplies optional Content-Language: en-US To: Tony Lindgren , Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Daniel Vetter , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Simha BN , Sam Ravnborg Cc: Carl Philipp Klemm , Ivaylo Dimitrov , Merlijn Wajer , Pavel Machek , Sebastian Reichel , Michael Walle , dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org References: <20231202075514.44474-1-tony@atomide.com> <20231202075514.44474-2-tony@atomide.com> From: Krzysztof Kozlowski Autocrypt: addr=krzysztof.kozlowski@linaro.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 02/12/2023 08:54, Tony Lindgren wrote: > From: Michael Walle > > For a normal operation, the vdd supplies nor the stby GPIO is needed. > There are boards, where these voltages are statically enabled during > board power-up. This means supply is still required. > > The reset pin is required because once the PPI (PHY protocol interface) > is started, it can only be stopped by asserting the reset pin. > > Signed-off-by: Michael Walle > Signed-off-by: Tony Lindgren > --- Best regards, Krzysztof