From patchwork Sat Sep 21 15:18:30 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Martin Blumenstingl X-Patchwork-Id: 11155555 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 77C7714DB for ; Sat, 21 Sep 2019 15:18:58 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 5553B208C0 for ; Sat, 21 Sep 2019 15:18:58 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="ZuBoXTbV"; dkim=fail reason="signature verification failed" (2048-bit key) header.d=googlemail.com header.i=@googlemail.com header.b="AwdZfkWa" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5553B208C0 Authentication-Results: mail.kernel.org; dmarc=fail (p=quarantine dis=none) header.from=googlemail.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-amlogic-bounces+patchwork-linux-amlogic=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=0URAnIsQsaK7vdLndfBoP/bfDnC6zSk/k3ND6o9EWSE=; b=ZuBoXTbVdKW4iH XBkEgUmvA08GrX0WhCpXSkg9Vly8+AUVhpFWtTKqLQtbmCebupYzejDbZF7PEUoftdzc1G4NuaPQW RE33SzWZQ2CcYbSVY7T8J2HD8ZJzWzi+ptyhRaSANxi98hR5U4Ch1GRW30U0xAMSw6yfql5/mv9rx jgs+iRdAZX9hFN1faUtqFcBBej0xMpA6JOG0qsHudX5IhGIwZcaniW7xutLfqJC8IjeAJIl7Ab7og nfMjlmmO9DqUmfXYRhsMCSpSe3VLIZExTcvIiKW4ARj6qWj0GA2sM76H/qpQ0d6tSWbSWcO9wz7VA x6BZ5ZUnuA4bpDEujlQg==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.2 #3 (Red Hat Linux)) id 1iBhA1-0002Bq-PS; Sat, 21 Sep 2019 15:18:57 +0000 Received: from mail-wr1-x441.google.com ([2a00:1450:4864:20::441]) by bombadil.infradead.org with esmtps (Exim 4.92.2 #3 (Red Hat Linux)) id 1iBh9w-000268-0I; Sat, 21 Sep 2019 15:18:54 +0000 Received: by mail-wr1-x441.google.com with SMTP id h7so9588608wrw.8; Sat, 21 Sep 2019 08:18:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=0VvVyYbylhhn27lwnpj3kEDmecswF/DtGt6I7xL1THE=; b=AwdZfkWa2Zgunj0RMms1Csk0t/Bg4v/uFPqVU7GERZOhx5a+rh7P2KefE2ys3mgPqu 8sp95P0w1G334sr3PxEdxmIvH2QCvBrTN8aHPLl2ln2VNjMp6QF5U41qAzgt07Vt3jNK etQuibrNO5D+4kjr6tb1quq6zE7UmuiM+whDQ0Pt/ca8TCmboJA/I8j3/SW2Rd1eHr5v Bt+60xkXfqkCmntTrq5oeWVgY5ZLULnV9aLK4uBFGEQAh9bMJLtL+wlSnXiPM1WCpoU/ JDdwt0avJHJ+mwWhE5P5hFn29PnNssxuJtf25y/JaSPcy2boWyrnXBP8saOOd30Vdqz+ NHWA== 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=0VvVyYbylhhn27lwnpj3kEDmecswF/DtGt6I7xL1THE=; b=lLc4+B+J2nbQumDW/5Wpz54ZETIr92BhkkZKpGlADBBK/3PtWZ+ShDZsYqUUZGe4Cr 2R88yQhjy6zCjMM18MU1RMlYVfPWXWQEsWWjGTatFUkQcWtbut8w04ZqUZbE2Demf4IG Jokltni78tgREiG8XMG/IOYzZLE/W70aXpeF8sTseXTYjqMtG7hBtsNjQYbFikN27Rwm UWGvNe+etAXbHunORvNx6TU61HIMoI4qHnbVa4t5io9yh7LEZEmdHhyVC3cnR5ZVJ5vn 172ShIzW48+4W7ZYCE2IUuDcOKqK4yL1y6R2S9E+Q4f6VGjToZfbMA71dUA/F4TiBR1Z N77g== X-Gm-Message-State: APjAAAWJrDdvbtraE9hIVeo8ocNkJ7m14ZDbhHIF9PUWSQp7EAxkt+8L xrPiWmL+aDIBhvmooPAh5IQ= X-Google-Smtp-Source: APXvYqzjLsxL6Hb5gWpypNfZmMuuKIqU6e8iKaQeFtNzeVg/UC9EEacsUopb1O4+mKK7gli1ftsl7g== X-Received: by 2002:a5d:6885:: with SMTP id h5mr16181417wru.92.1569079128474; Sat, 21 Sep 2019 08:18:48 -0700 (PDT) Received: from blackbox.darklights.net (p200300F133CE0B0028BAA8C744A6F562.dip0.t-ipconnect.de. [2003:f1:33ce:b00:28ba:a8c7:44a6:f562]) by smtp.googlemail.com with ESMTPSA id c6sm6003120wrb.60.2019.09.21.08.18.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 21 Sep 2019 08:18:47 -0700 (PDT) From: Martin Blumenstingl To: narmstrong@baylibre.com, jbrunet@baylibre.com, robh+dt@kernel.org, mark.rutland@arm.com, linux-amlogic@lists.infradead.org, devicetree@vger.kernel.org, khilman@baylibre.com Subject: [PATCH 1/6] dt-bindings: clock: add the Amlogic Meson8 DDR clock controller binding Date: Sat, 21 Sep 2019 17:18:30 +0200 Message-Id: <20190921151835.770263-2-martin.blumenstingl@googlemail.com> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20190921151835.770263-1-martin.blumenstingl@googlemail.com> References: <20190921151835.770263-1-martin.blumenstingl@googlemail.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190921_081852_817123_B0105DB1 X-CRM114-Status: GOOD ( 12.85 ) X-Spam-Score: -0.2 (/) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (-0.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [2a00:1450:4864:20:0:0:0:441 listed in] [list.dnswl.org] 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (martin.blumenstingl[at]googlemail.com) -0.0 SPF_PASS SPF: sender matches SPF record -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain X-BeenThere: linux-amlogic@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Martin Blumenstingl , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-clk@vger.kernel.org Sender: "linux-amlogic" Errors-To: linux-amlogic-bounces+patchwork-linux-amlogic=patchwork.kernel.org@lists.infradead.org Amlogic Meson8, Meson8b and Meson8m2 SoCs have a DDR clock controller in the MMCBUS registers. There is no public documentation on this, but the GPL u-boot sources from the Amlogic BSP show that: - it uses the same XTAL input as the main clock controller - it contains a PLL which seems to be implemented just like the other PLLs in this SoC - there is a power-of-two PLL post-divider Add the documentation and header file for this DDR clock controller. Signed-off-by: Martin Blumenstingl Reviewed-by: Rob Herring --- .../clock/amlogic,meson8-ddr-clkc.yaml | 50 +++++++++++++++++++ include/dt-bindings/clock/meson8-ddr-clkc.h | 4 ++ 2 files changed, 54 insertions(+) create mode 100644 Documentation/devicetree/bindings/clock/amlogic,meson8-ddr-clkc.yaml create mode 100644 include/dt-bindings/clock/meson8-ddr-clkc.h diff --git a/Documentation/devicetree/bindings/clock/amlogic,meson8-ddr-clkc.yaml b/Documentation/devicetree/bindings/clock/amlogic,meson8-ddr-clkc.yaml new file mode 100644 index 000000000000..bf3ca5888485 --- /dev/null +++ b/Documentation/devicetree/bindings/clock/amlogic,meson8-ddr-clkc.yaml @@ -0,0 +1,50 @@ +# SPDX-License-Identifier: GPL-2.0 +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/clock/amlogic,meson8-ddr-clkc.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Amlogic DDR Clock Controller Device Tree Bindings + +maintainers: + - Martin Blumenstingl + +properties: + compatible: + enum: + - amlogic,meson8-ddr-clkc + - amlogic,meson8b-ddr-clkc + + reg: + maxItems: 1 + + clocks: + maxItems: 1 + + clock-names: + items: + - const: xtal + + "#clock-cells": + const: 1 + +required: + - compatible + - reg + - clocks + - clock-names + - "#clock-cells" + +additionalProperties: false + +examples: + - | + ddr_clkc: clock-controller@400 { + compatible = "amlogic,meson8-ddr-clkc"; + reg = <0x400 0x20>; + clocks = <&xtal>; + clock-names = "xtal"; + #clock-cells = <1>; + }; + +... diff --git a/include/dt-bindings/clock/meson8-ddr-clkc.h b/include/dt-bindings/clock/meson8-ddr-clkc.h new file mode 100644 index 000000000000..a8e0fa2987ab --- /dev/null +++ b/include/dt-bindings/clock/meson8-ddr-clkc.h @@ -0,0 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#define DDR_CLKID_DDR_PLL_DCO 0 +#define DDR_CLKID_DDR_PLL 1