From patchwork Thu May 7 21:34:56 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Doug Anderson X-Patchwork-Id: 11534933 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 7CCC0139A for ; Thu, 7 May 2020 21:35:38 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (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 5B9AC216FD for ; Thu, 7 May 2020 21:35:38 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="JEPOGcmw" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5B9AC216FD Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=chromium.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id EB6616EA6C; Thu, 7 May 2020 21:35:30 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mail-pf1-x443.google.com (mail-pf1-x443.google.com [IPv6:2607:f8b0:4864:20::443]) by gabe.freedesktop.org (Postfix) with ESMTPS id CAD306EA6B for ; Thu, 7 May 2020 21:35:29 +0000 (UTC) Received: by mail-pf1-x443.google.com with SMTP id 18so3646026pfv.8 for ; Thu, 07 May 2020 14:35:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=XfNEDCRiXjCC8oOylpb9JNhfA9+c9hrQufk7O01EutI=; b=JEPOGcmwFBfW5QCKms1+maouE+hSH796fyxNeSs6NafNDFXUhutuNYMqtyu+Cz4ftE smDDleCiYarIBTBNcvs9qhyaX4KxL7re6xdgs706c6CBvnOPokM8Q5Hjxqfd+u70iMzN L4Nfj73BfoYxzl3kVdWZnth1x62n3HdcVf5uo= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=XfNEDCRiXjCC8oOylpb9JNhfA9+c9hrQufk7O01EutI=; b=aeXQNZi/olpmy1rNl7JhuTzviFMz9IChEP9f8VOPsDCRoSqKpyjS33GiPuegb1N4nf rkMxaPuKWQlBrYpiXUWJdrY/MvYmcj+R2sjVciNrNkGujJMMFevyvzI34V/Edym/Z3Op fbtssOyUOWtROC81++d1sJ/k2+wp8AFAWVyRkys8lFTAsqdeMdQN4Y1bUZ1gcJ9kuzCg +PfHF8BsrZkwIbffwnbxHY9zG2xRzQ3w4YaeSPG7WI/hEQfBr1M0NcLtiethkcB2X2tx gb3RL3pWU+gJ9WUTo2lP862fwZPCmUz2FGTvFmfnqDUPBp9pS45VePL1XWQHli8MKun1 KusA== X-Gm-Message-State: AGi0PuZXfHfRXqYaftdjNjhMCxNHmj4W5AgYLt4yrq+8fR6kAxicgcJn X6F0EWPJYU4BL0256/FvDBIMZQ== X-Google-Smtp-Source: APiQypIN4LGb4WwjVAsqDkdk6/Lm8XZyQnvUfoNsrt2XHG4HD0F4xJ4m0Ae8nle3ctmT2+GxbHwNUA== X-Received: by 2002:a63:741e:: with SMTP id p30mr13075429pgc.433.1588887329409; Thu, 07 May 2020 14:35:29 -0700 (PDT) Received: from tictac2.mtv.corp.google.com ([2620:15c:202:1:24fa:e766:52c9:e3b2]) by smtp.gmail.com with ESMTPSA id i10sm5884860pfa.166.2020.05.07.14.35.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 07 May 2020 14:35:28 -0700 (PDT) From: Douglas Anderson To: linus.walleij@linaro.org, bgolaszewski@baylibre.com, airlied@linux.ie, daniel@ffwll.ch, robh+dt@kernel.org, narmstrong@baylibre.com, a.hajda@samsung.com, Laurent.pinchart@ideasonboard.com, spanda@codeaurora.org Subject: [PATCH v5 2/6] dt-bindings: display: Add hpd-gpios to panel-common bindings Date: Thu, 7 May 2020 14:34:56 -0700 Message-Id: <20200507143354.v5.2.I1976736b400a3b30e46efa47782248b86b3bc627@changeid> X-Mailer: git-send-email 2.26.2.645.ge9eca65c58-goog In-Reply-To: <20200507213500.241695-1-dianders@chromium.org> References: <20200507213500.241695-1-dianders@chromium.org> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: robdclark@chromium.org, devicetree@vger.kernel.org, jernej.skrabec@siol.net, jeffrey.l.hugo@gmail.com, linux-arm-msm@vger.kernel.org, jonas@kwiboo.se, Douglas Anderson , dri-devel@lists.freedesktop.org, swboyd@chromium.org, linux-gpio@vger.kernel.org, Thierry Reding , Laurent Pinchart , bjorn.andersson@linaro.org, Sam Ravnborg , linux-kernel@vger.kernel.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" In the cases where there is no connector in a system there's no great place to put "hpd-gpios". As per discussion [1] the best place to put it is in the panel. Add this to the device tree bindings. [1] https://lore.kernel.org/r/20200417180819.GE5861@pendragon.ideasonboard.com Signed-off-by: Douglas Anderson Reviewed-by: Stephen Boyd Reviewed-by: Linus Walleij Reviewed-by: Laurent Pinchart --- Changes in v5: None Changes in v4: None Changes in v3: None Changes in v2: - ("dt-bindings: display: Add hpd-gpios to panel-common...") new for v2 .../devicetree/bindings/display/panel/panel-common.yaml | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/Documentation/devicetree/bindings/display/panel/panel-common.yaml b/Documentation/devicetree/bindings/display/panel/panel-common.yaml index ed051ba12084..e9a04a3a4f5f 100644 --- a/Documentation/devicetree/bindings/display/panel/panel-common.yaml +++ b/Documentation/devicetree/bindings/display/panel/panel-common.yaml @@ -96,6 +96,12 @@ properties: (hot plug detect) signal, but the signal isn't hooked up so we should hardcode the max delay from the panel spec when powering up the panel. + hpd-gpios: + maxItems: 1 + description: + If Hot Plug Detect (HPD) is connected to a GPIO in the system rather + than a dedicated HPD pin the pin can be specified here. + # Control I/Os # Many display panels can be controlled through pins driven by GPIOs. The nature