From patchwork Thu Apr 23 16:25:44 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Doug Anderson X-Patchwork-Id: 11506015 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 6849F13B2 for ; Thu, 23 Apr 2020 16:26:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4FB5A20781 for ; Thu, 23 Apr 2020 16:26:18 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="e12bR+Zp" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729667AbgDWQ0P (ORCPT ); Thu, 23 Apr 2020 12:26:15 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33900 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1729665AbgDWQ0O (ORCPT ); Thu, 23 Apr 2020 12:26:14 -0400 Received: from mail-pf1-x443.google.com (mail-pf1-x443.google.com [IPv6:2607:f8b0:4864:20::443]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 47553C09B045 for ; Thu, 23 Apr 2020 09:26:14 -0700 (PDT) Received: by mail-pf1-x443.google.com with SMTP id 145so3177148pfw.13 for ; Thu, 23 Apr 2020 09:26:14 -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=t+az60ThGdIE96zHd3j4C+YFzxV2ee2icRXc48MtdSg=; b=e12bR+ZpXLVjEEpan9cAEWHV4kDr8Z7MZkqcd7f2suEPYFg8jvkfNyq70AOvFiT7wa 4R/XyzA6cL0T1vpLIg314Ii0SKalB98Q4CK9r4ofREWXmfxZDtzOTMdjCYn1ytmbKmiX ZkpDOzjkjb2l8hrkAs+QCG1FNUaXWUvOjEhEc= 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=t+az60ThGdIE96zHd3j4C+YFzxV2ee2icRXc48MtdSg=; b=BBbkxrFKpPFih/4TObeb5ubCK9x2pcjgVThA2i+OZKZBCLQM1hOeD288ozowI1gT3p zkRUbamTqGWhXv2zYhIR9G5bv4beQcc4zbxTtZh9iylF1UAPjrogspX7KBojPJWsD1ct iDG22c4+hMXd+S5MYs5bAUOLUsC2Cw25Ww/4tbuhGQpfGxctMOYO8O80kxnFrvYIqkK1 bHszg7T3b9EvCbkcjyL0HW6ijPaElsCn3nO1UfgQ4MV3jFiIbeTV0ZetfBpY0KNYyisH iZ6fI2Cq246j9G4hoMtIhJEU6hThx+airxnUUdBTeCt+BNc8jfdCrWUfmg62DCWpbFxy 0A+g== X-Gm-Message-State: AGi0Pua+vc2CHzWGN97mIZThBYTNOU0bH0y7rUN4jPeULEcWQxp5Ctm2 uM59qeGQsBYYDZQQWib2eu+RcA== X-Google-Smtp-Source: APiQypKjcxU1Aq1NSUI9ytZOpl3JXA96PEo792irFM8Rg9bStYDnDS9zclolWyNi4CYW+A0kSTRQDw== X-Received: by 2002:aa7:9709:: with SMTP id a9mr4779536pfg.166.1587659173796; Thu, 23 Apr 2020 09:26:13 -0700 (PDT) Received: from tictac2.mtv.corp.google.com ([2620:15c:202:1:24fa:e766:52c9:e3b2]) by smtp.gmail.com with ESMTPSA id d12sm2841927pfq.36.2020.04.23.09.26.12 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 23 Apr 2020 09:26:13 -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 Cc: swboyd@chromium.org, devicetree@vger.kernel.org, linux-gpio@vger.kernel.org, jeffrey.l.hugo@gmail.com, dri-devel@lists.freedesktop.org, linux-arm-msm@vger.kernel.org, robdclark@chromium.org, jernej.skrabec@siol.net, jonas@kwiboo.se, bjorn.andersson@linaro.org, Douglas Anderson , Sam Ravnborg , Thierry Reding , linux-kernel@vger.kernel.org Subject: [PATCH v3 2/6] dt-bindings: display: Add hpd-gpios to panel-common bindings Date: Thu, 23 Apr 2020 09:25:44 -0700 Message-Id: <20200423092431.v3.2.I1976736b400a3b30e46efa47782248b86b3bc627@changeid> X-Mailer: git-send-email 2.26.1.301.g55bc3eb7cb9-goog In-Reply-To: <20200423162548.129661-1-dianders@chromium.org> References: <20200423162548.129661-1-dianders@chromium.org> MIME-Version: 1.0 Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org 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 --- 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