From patchwork Fri Jul 10 23:02:17 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Doug Anderson X-Patchwork-Id: 11657493 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 AFFAB13B4 for ; Fri, 10 Jul 2020 23:02:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 94632207D0 for ; Fri, 10 Jul 2020 23:02:49 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="k8zU2rjL" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726914AbgGJXCs (ORCPT ); Fri, 10 Jul 2020 19:02:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38534 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726907AbgGJXCr (ORCPT ); Fri, 10 Jul 2020 19:02:47 -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 BA529C08C5DC for ; Fri, 10 Jul 2020 16:02:47 -0700 (PDT) Received: by mail-pl1-x644.google.com with SMTP id x9so2853518plr.2 for ; Fri, 10 Jul 2020 16:02:47 -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=SOEifiIh+gw1ksCpw3+MdPsiCbOdQ0cDfgdVRKb9Csc=; b=k8zU2rjLwwu9xxH6CtqzfzziVe1vGy1bbnfaYS4aV6d8OBtTZkbwlSOJJvvmPXJbSR e+lH31NsyffijpPqmezQuKlLqrpVO65l/rRqLmPGfkCVwXEwRCH5bYRYw15DCh6yEcR+ 41eQMVmiDyHYBBVuEs5cYvgWCaYuLUL9AnpjQ= 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=SOEifiIh+gw1ksCpw3+MdPsiCbOdQ0cDfgdVRKb9Csc=; b=eZT5LsleV1t4PRmyHkrj6hec0VW2XRBG8ngHoR5kyTWhogcWkHmD45a0LpgIO5tbJr ByvWuIFbuxZ7k8Q0+Af8UnzQPhoRTr6G/S7kkzqomIGp7sSriC0ra10fZkACOwTFL2v0 Ewz7Z63Tks5PEpNzTgCfFBD+nC5mMxXo/iikCToh95AYFhq7FkWOsSmK4x990SQYNPts uXyrzPbBZucBywK14E5XVRfuoiV6xoxuWwe/G2ku95MLYJ6u2swFikc5wBME0wdu0fH2 Le5YsFBV6cvD5QyZKks5kqy9+tJ7k4jXrRM9UG2CT38WnQacpVlxIwvC7c3iCP/06yI+ 9ung== X-Gm-Message-State: AOAM531RmaujX5zX/TJDTHQ/9Stuu7MBjiNtnVgHUiR2ltiY0oN0Ijle wyoXSQbeI2kpYzdaAinoby7Ulg== X-Google-Smtp-Source: ABdhPJzdSjyDJg2gb4e4NI73Cop7js70UClKGQIJKPQF33PAmLwF3oSqZOi78uGWEWIaJ81gbrnxfg== X-Received: by 2002:a17:90a:cc:: with SMTP id v12mr7439843pjd.96.1594422167234; Fri, 10 Jul 2020 16:02:47 -0700 (PDT) Received: from tictac2.mtv.corp.google.com ([2620:15c:202:1:42b0:34ff:fe3d:58e6]) by smtp.gmail.com with ESMTPSA id my9sm7266836pjb.44.2020.07.10.16.02.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 10 Jul 2020 16:02:46 -0700 (PDT) From: Douglas Anderson To: Rob Herring , Rob Clark , Sean Paul , Andy Gross , Bjorn Andersson Cc: dri-devel@lists.freedesktop.org, linux-arm-msm@vger.kernel.org, freedreno@lists.freedesktop.org, devicetree@vger.kernel.org, Douglas Anderson , Daniel Vetter , David Airlie , linux-kernel@vger.kernel.org Subject: [PATCH 2/9] dt-bindings: msm/dpu: Add simple-bus to dpu bindings Date: Fri, 10 Jul 2020 16:02:17 -0700 Message-Id: <20200710160131.2.Id4b5c92d28b7350d047218774afaf69b683651e0@changeid> X-Mailer: git-send-email 2.27.0.383.g050319c2ae-goog In-Reply-To: <20200710230224.2265647-1-dianders@chromium.org> References: <20200710230224.2265647-1-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 We have a whole bunch of child devices that we really just want treated as other devices to instantiate. Add the "simple-bus" property for this. Commit-notes This bindings file really needs to move over to yaml. Hopefully someone at Qualcomm who's working on display code can help with that. Right now on Linux we have a manual call to of_platform_populate() to populate our children. That's pretty non-ideal as described in another patch in this series and I'm trying to remove it. I'm not sure how much of a hack to consider "simple-bus". I've seen it used like this before, but if folks tell me that it's terrible then I guess we'll have to figure some other way out of our crazy -EPROBE_DEFER loop in Linux. END Signed-off-by: Douglas Anderson --- Documentation/devicetree/bindings/display/msm/dpu.txt | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/display/msm/dpu.txt b/Documentation/devicetree/bindings/display/msm/dpu.txt index 551ae26f60da..b88269524365 100644 --- a/Documentation/devicetree/bindings/display/msm/dpu.txt +++ b/Documentation/devicetree/bindings/display/msm/dpu.txt @@ -8,7 +8,9 @@ The DPU display controller is found in SDM845 SoC. MDSS: Required properties: -- compatible: "qcom,sdm845-mdss", "qcom,sc7180-mdss" +- compatible: One of: + - "qcom,sdm845-mdss", "simple-bus" + - "qcom,sc7180-mdss", "simple-bus" - reg: physical base address and length of contoller's registers. - reg-names: register region names. The following region is required: * "mdss"