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: 11534953 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 8CF00139A for ; Thu, 7 May 2020 21:35:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 72C4A20CC7 for ; Thu, 7 May 2020 21:35:59 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="JEPOGcmw" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727071AbgEGVf6 (ORCPT ); Thu, 7 May 2020 17:35:58 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59224 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726937AbgEGVfa (ORCPT ); Thu, 7 May 2020 17:35:30 -0400 Received: from mail-pg1-x544.google.com (mail-pg1-x544.google.com [IPv6:2607:f8b0:4864:20::544]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DF5ADC05BD0C for ; Thu, 7 May 2020 14:35:29 -0700 (PDT) Received: by mail-pg1-x544.google.com with SMTP id r4so3392955pgg.4 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=fo+lYahnQv4OhAXIcyxd4lhi/InI8oPa1GWuU7dFMXeXXr8TEJz6k9okRysBSAkPYf 2PyKAjv6qUgW429zI0SpIi/JuKHrjQSIBzDQsFcKr+PR/KgVlZZlKermYXUf9ohNAYu6 qLvc578BQKv+nVfYj3Q4tYJf/y2qSXV2IJORstVkpySFlwWsHvbP8/7JR+nn+VNLgU+p NXSxRu3NUbkCa3SLWQMj3NL+G5aSahXy4LO9U1JXmieBibAu5sWyc7GCkWTAdviN49yp KoFVdXTl/z2iKbrjiyoftJCRMxrvQClxaYDIGCq33RCv/3enxrinJEnEYDlf90x5RUQy vtfA== X-Gm-Message-State: AGi0PuYtdpy7pkQMtDQk3U7DoQNfgj7NmunnD2GBEuG58Fc/ltAstGSm TNQCoDlSqRSinyyxrWggvKHiJA== 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 Cc: jonas@kwiboo.se, jeffrey.l.hugo@gmail.com, linux-gpio@vger.kernel.org, bjorn.andersson@linaro.org, swboyd@chromium.org, jernej.skrabec@siol.net, devicetree@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-arm-msm@vger.kernel.org, robdclark@chromium.org, Douglas Anderson , Laurent Pinchart , Sam Ravnborg , Thierry Reding , linux-kernel@vger.kernel.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 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 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