From patchwork Tue Apr 21 05:06:18 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Doug Anderson X-Patchwork-Id: 11500463 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 3D7D214B4 for ; Tue, 21 Apr 2020 05:07:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 25D7E22202 for ; Tue, 21 Apr 2020 05:07:17 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="mdzRnubw" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727043AbgDUFHQ (ORCPT ); Tue, 21 Apr 2020 01:07:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46418 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1726524AbgDUFGx (ORCPT ); Tue, 21 Apr 2020 01:06:53 -0400 Received: from mail-pl1-x644.google.com (mail-pl1-x644.google.com [IPv6:2607:f8b0:4864:20::644]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7B9A9C061A41 for ; Mon, 20 Apr 2020 22:06:52 -0700 (PDT) Received: by mail-pl1-x644.google.com with SMTP id w3so4829850plz.5 for ; Mon, 20 Apr 2020 22:06:52 -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=eGfBKJpSi90UFqlpYNStz7DM33anWi17Ai2zGXaXMWc=; b=mdzRnubwKP7krAS40Ea2KN23CScPHBKO1SR+AS0E+/6i+r66UtFj7LxigBVGbaH03H 6mOa4r/1UEkt+v0t8swjMLve4coTvqfK3oY1x5oYuCKpxeBZjJ45n/4QyONrWNhCCJr7 mxx+wneohm5w3rXhblsvBowD0WFWXphhzMzEk= 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=eGfBKJpSi90UFqlpYNStz7DM33anWi17Ai2zGXaXMWc=; b=ES5GNjT57o1U6mge5fibIdaFdGg5cN7xg0x2LfZ+OBCK1mj+Xo8FrHDObtlqlgOQ0Z 42kwIe8UvcXNJfxlVuswPzVOF7lgY4YBSGxhcdwwGjurkIi31oHCGRWvumPGS0YM1uWj 9X+yqiJQY8v43jOCvnASSuSUdBewxhSitk+j/Ng53g/X2/ACfervY60vHU1BhSIMR90l OwzcUnEZRh4MuZgNiSyBLjeFk6wTLMt4iqUQ8ZEUN4jJbjK7NoHSoRgoaYBSdiAzd2H3 /et/FTyjlT6HTzlnVKel+qtSAM6MoBlWcTDbR0budXwZuwzgMfY8bDeOEcrAmFzyvusm keGg== X-Gm-Message-State: AGi0PubY0Ru0xBYLeATYvwgzV4JUy+JASJfa3NbFWPPrPkhVYxuOi+MP FyuH7RZQOSsi/slwPBnk05xKcw== X-Google-Smtp-Source: APiQypJQNPdkuPcpRjjTTAYI/poAyKTtArgQxmjjnmtRkUI/zZQTGT50tl4mj8Sv4sxDO7Poue+Axw== X-Received: by 2002:a17:90a:dc01:: with SMTP id i1mr3278786pjv.94.1587445611989; Mon, 20 Apr 2020 22:06:51 -0700 (PDT) Received: from tictac2.mtv.corp.google.com ([2620:15c:202:1:24fa:e766:52c9:e3b2]) by smtp.gmail.com with ESMTPSA id p68sm1184780pfb.89.2020.04.20.22.06.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 20 Apr 2020 22:06:51 -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: jonas@kwiboo.se, jeffrey.l.hugo@gmail.com, linux-gpio@vger.kernel.org, linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, jernej.skrabec@siol.net, swboyd@chromium.org, bjorn.andersson@linaro.org, robdclark@chromium.org, Douglas Anderson , Sam Ravnborg , Thierry Reding , linux-kernel@vger.kernel.org Subject: [PATCH v2 2/6] dt-bindings: display: Add hpd-gpios to panel-common bindings Date: Mon, 20 Apr 2020 22:06:18 -0700 Message-Id: <20200420220458.v2.2.I1976736b400a3b30e46efa47782248b86b3bc627@changeid> X-Mailer: git-send-email 2.26.1.301.g55bc3eb7cb9-goog In-Reply-To: <20200421050622.8113-1-dianders@chromium.org> References: <20200421050622.8113-1-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 --- 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