From patchwork Sun Jan 12 00:24:57 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Martin Blumenstingl X-Patchwork-Id: 11329019 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 752EB109A for ; Sun, 12 Jan 2020 00:25:32 +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 4FE6420866 for ; Sun, 12 Jan 2020 00:25:32 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="K8v94dm5"; dkim=fail reason="signature verification failed" (2048-bit key) header.d=googlemail.com header.i=@googlemail.com header.b="vZ3qFYvj" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4FE6420866 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-arm-kernel-bounces+patchwork-linux-arm=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=ZgbJG7cVwV6XjC8X87lVwAxLFQgkIG5QT+UOoHuKyhg=; b=K8v94dm5G8Q6Kd T7LHUwplAakNTq3X/1mA1BodTfZo6e+CX6Q/ga89n50VUloFWvz2li3et4BQH6DAgvZANm83981zX iznh7yaDbjKYWfZxNRi9uN8pXKOHky/Wn2RZnraKCwNma2FoBpZxKnLnpfhVHEB7OyDvcuHi2nslj rjJkjCoQkap8SesXAnUwa9joeD/W3oN5PQlQ0wdQYhzK4jYIMj7i8tvGsJ6OZNDmDsnjlOrWbd3GF lSJ5ZOU+KtKa+Vi2IU3YEfL2i2DkJY51jIWFNR5T/P3CwHFLyg5LSzLs8l6C6FpqCfRkyLWDt9ON7 zpfFwVoHpyqJcbNzxF/Q==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1iqR4L-0000gc-GA; Sun, 12 Jan 2020 00:25:29 +0000 Received: from mail-wr1-x441.google.com ([2a00:1450:4864:20::441]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1iqR4E-0000c8-0J; Sun, 12 Jan 2020 00:25:23 +0000 Received: by mail-wr1-x441.google.com with SMTP id y11so5199715wrt.6; Sat, 11 Jan 2020 16:25:21 -0800 (PST) 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=CRYfuTJuy4ICmcEVYmYYaJ9iq8iqh3Fd6F2pqTPly4U=; b=vZ3qFYvjxPQnSXjLDUC2VIqRG1l5EmaQe6BwYk/le+x0rNyTYMiiTy7tYkf/z0eAy+ BA0bcljF3UTSGyq7u1Wsb8or9I0ddWWKb4xR13jdqzd/xJvxy0wF8WmjL8YUYd5M/asy 91Ea+lHlxn6rmY79AL0ex0ZFDc69lgvIMVwpyG5ikv5f9iH6Vz9K8QsupKPxhGN4grlX H8CYutfnwVMKL9V07i4wAPask6eNF6PYMgqpzoeuIcVKg3kNYIB5/9CTfbYMlt0o7coI FXy+yngMsfjR0uucp+IzRYdFSXOsnKHReCzKx2AOQElGRG+8X29B20wEmnfLaxbNUhM3 Sb0g== 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=CRYfuTJuy4ICmcEVYmYYaJ9iq8iqh3Fd6F2pqTPly4U=; b=TEVDIw4v0Ge3PEp4RoQR6iA13u0K92m3y2yITGlT5Pwc+sNHISos3oO7ORODWBPsdz 0nf8oun0z1eNY0Ka1OhvFviHrpPg7u3tAFyQurChZ9rn8rFNbUsoqGmg7S56WAizYsVG zgNS2f0+UrxFck1JMBIlDOYIGAsNQj3IgRp+050cjLLF53xTv0P2eCYiB/xBE86ET0CP fRbkv45gryYA8nfQD22TzzOkNHmQdpBsZjxJdYMcYCumpWdkgJg3XqNNDtLUgM2GXXVx yZFX6NYn08H0rbnzXU952uBm/sH7yDpKMlVQZAjR+Dn3tVelQdSsE1IxjY6MQZwFrJaC BdWg== X-Gm-Message-State: APjAAAV80J/AbBM+4rQM2c2wKDlN21+AMi2WUA0WGhCQOqj9IVy8CIM5 bW/iwOTHU7YiJL9YfUVAT2VKpdm2 X-Google-Smtp-Source: APXvYqzfkMPyJclbK5x1eGwqJu5YGbbeqrV0pR+3CV5gs2Vxkv//LYzheqNHhBRiJG4TWNach+NvlQ== X-Received: by 2002:a05:6000:1248:: with SMTP id j8mr10351489wrx.44.1578788720393; Sat, 11 Jan 2020 16:25:20 -0800 (PST) Received: from localhost.localdomain (p200300F1373A1900428D5CFFFEB99DB8.dip0.t-ipconnect.de. [2003:f1:373a:1900:428d:5cff:feb9:9db8]) by smtp.googlemail.com with ESMTPSA id t5sm8407389wrr.35.2020.01.11.16.25.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 11 Jan 2020 16:25:19 -0800 (PST) From: Martin Blumenstingl To: linux-amlogic@lists.infradead.org, devicetree@vger.kernel.org, linux-mmc@vger.kernel.org, ulf.hansson@linaro.org, robh+dt@kernel.org Subject: [PATCH v4 1/3] dt-bindings: mmc: Document the Amlogic Meson SDHC MMC host controller Date: Sun, 12 Jan 2020 01:24:57 +0100 Message-Id: <20200112002459.2124850-2-martin.blumenstingl@googlemail.com> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200112002459.2124850-1-martin.blumenstingl@googlemail.com> References: <20200112002459.2124850-1-martin.blumenstingl@googlemail.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200111_162522_074533_E91B7C23 X-CRM114-Status: GOOD ( 11.94 ) 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 Message has at least one valid DKIM or DK signature 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: mark.rutland@arm.com, jianxin.pan@amlogic.com, Martin Blumenstingl , linux-kernel@vger.kernel.org, yinxin_1989@aliyun.com, linux-arm-kernel@lists.infradead.org, lnykww@gmail.com Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org This documents the devicetree bindings for the SDHC MMC host controller found in Meson6, Meson8, Meson8b and Meson8m2 SoCs. It can use a bus-width of 1/4/8-bit and it supports eMMC spec 4.4x/4.5x including HS200 mode (up to 100MHz clock). It embeds an internal clock controller which outputs four clocks (mod_clk, sd_clk, tx_clk and rx_clk) and is fed by four external input clocks (clkin[0-3]). "pclk" is the module register clock, it has to be enabled to access the registers. Signed-off-by: Martin Blumenstingl --- .../bindings/mmc/amlogic,meson-mx-sdhc.yaml | 83 +++++++++++++++++++ .../dt-bindings/clock/meson-mx-sdhc-clkc.h | 8 ++ 2 files changed, 91 insertions(+) create mode 100644 Documentation/devicetree/bindings/mmc/amlogic,meson-mx-sdhc.yaml create mode 100644 include/dt-bindings/clock/meson-mx-sdhc-clkc.h diff --git a/Documentation/devicetree/bindings/mmc/amlogic,meson-mx-sdhc.yaml b/Documentation/devicetree/bindings/mmc/amlogic,meson-mx-sdhc.yaml new file mode 100644 index 000000000000..74632692ce26 --- /dev/null +++ b/Documentation/devicetree/bindings/mmc/amlogic,meson-mx-sdhc.yaml @@ -0,0 +1,83 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/mmc/amlogic,meson-mx-sdhc.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Amlogic Meson SDHC controller Device Tree Bindings + +allOf: + - $ref: "mmc-controller.yaml" + +maintainers: + - Martin Blumenstingl + +description: | + The SDHC MMC host controller on Amlogic SoCs provides an eMMC and MMC + card interface with 1/4/8-bit bus width. + It supports eMMC spec 4.4x/4.5x including HS200 (up to 100MHz clock). + +properties: + compatible: + items: + - enum: + - amlogic,meson8-sdhc + - amlogic,meson8b-sdhc + - amlogic,meson8m2-sdhc + - const: amlogic,meson-mx-sdhc + + reg: + minItems: 1 + + interrupts: + minItems: 1 + + "#clock-cells": + const: 1 + + clocks: + minItems: 9 + + clock-names: + items: + - const: pclk + - const: mod_clk + - const: sd_clk + - const: rx_clk + - const: tx_clk + - const: clkin0 + - const: clkin1 + - const: clkin2 + - const: clkin3 + +required: + - compatible + - reg + - interrupts + - "#clock-cells" + - clocks + - clock-names + +examples: + - | + #include ; + #include + #include + + sdhc: mmc@8e00 { + compatible = "amlogic,meson8-sdhc", "amlogic,meson-mx-sdhc"; + reg = <0x8e00 0x42>; + interrupts = ; + #clock-cells = <1>; + clocks = <&sdhc_pclk>, + <&sdhc SDHC_CLKID_MOD_CLK>, + <&sdhc SDHC_CLKID_SD_CLK>, + <&sdhc SDHC_CLKID_TX_CLK>, + <&sdhc SDHC_CLKID_RX_CLK>, + <&xtal>, + <&fclk_div4>, + <&fclk_div3>, + <&fclk_div5>; + clock-names = "pclk", "mod_clk", "sd_clk", "tx_clk", "rx_clk", + "clkin0", "clkin1", "clkin2", "clkin3"; + }; diff --git a/include/dt-bindings/clock/meson-mx-sdhc-clkc.h b/include/dt-bindings/clock/meson-mx-sdhc-clkc.h new file mode 100644 index 000000000000..ad9f6e4dc426 --- /dev/null +++ b/include/dt-bindings/clock/meson-mx-sdhc-clkc.h @@ -0,0 +1,8 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#define SDHC_CLKID_SRC_SEL 0 +#define SDHC_CLKID_DIV 1 +#define SDHC_CLKID_MOD_CLK 2 +#define SDHC_CLKID_SD_CLK 3 +#define SDHC_CLKID_TX_CLK 4 +#define SDHC_CLKID_RX_CLK 5