From patchwork Mon May 20 10:12:00 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "(Exiting) Baolin Wang" X-Patchwork-Id: 10950755 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id EC327933 for ; Mon, 20 May 2019 10:12:57 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id DBC0E28762 for ; Mon, 20 May 2019 10:12:57 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id CF8D528767; Mon, 20 May 2019 10:12:57 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 755AA28762 for ; Mon, 20 May 2019 10:12:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732514AbfETKMz (ORCPT ); Mon, 20 May 2019 06:12:55 -0400 Received: from mail-pf1-f196.google.com ([209.85.210.196]:44077 "EHLO mail-pf1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732497AbfETKMy (ORCPT ); Mon, 20 May 2019 06:12:54 -0400 Received: by mail-pf1-f196.google.com with SMTP id g9so6973852pfo.11 for ; Mon, 20 May 2019 03:12:54 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :in-reply-to:references; bh=psGipp4xyvA6ITMw9MQePCESgWaNPblRsxWV83tCX+4=; b=DDe6R5++Fzja9VoGMt+SiLItI4KCRzkHl1b612rdgS5J8T5Qo1eIV3EEf38bAPOSdX TBv+I1VgFq1YeFO/fFRQRdPJ6yP5ucgrpKCWk5BCNuPPINN0PWn5aD6QgPmuzNveadlu z5b/l/Apk0KMKQQSP15dUy5V2i24M/9JCfl6AGpouxMxxq6jpBGZeJEGhmp0DVEJ9Mgc rViySazF3M83zMmXn0ze7FWpzMkzuWVcq1y77Ry53gK5IVKl7fWbhNWrcXAeaEaEwgZo IL+bDsrmOJ7riSZ/XjjTj9qBDLdOzEOWfW39uNyHzXJfoylddvQhKcTfId6Sn3+7lWo+ k4GQ== 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:in-reply-to:references; bh=psGipp4xyvA6ITMw9MQePCESgWaNPblRsxWV83tCX+4=; b=pxqRvlqGm7VZ1iYQR0/imE38aMq9dmxlSa/TZhsmLWebIHEIm0A+mEMoh9QfzaDrNP DQ2ZECHWGBV5HtnKvJHmDWkM7rn1ZeAiSkBfwplCG1fR4e6hg3FUGyBGpVxJmKC+pcgl tXCrvAnl8Zb02DvIU6YIokboAcJuCkvFc8rUXy3s47S/5vg81A2dNzPUHWwD5gujUb6S ciPKxZjGDe8l6BfS0UNrB+WAMMzIuEka7q1fDBubLJJ6L73PyOg1XFhW4oAJ51B2ZXfi XYYBJhwcDppKc4q/3KHc+tP2w2bxC9hKXz0SA1C2/jYAVgqPr4zaoKoXRpXDSX/t0tKg Z+7g== X-Gm-Message-State: APjAAAXsm9JSQPzowZ5WcSaj1DEAltyrafjSRytfDH/OeleFz9o0G4U8 HaZ7oQPg5QlCQHdfbGH2h9toZg== X-Google-Smtp-Source: APXvYqyJUQl1Mf5fAZLcOV0IUUXJWaBCvUX3etV6Sos7Hp/LITH/u60ghjIXaOUVvU/apfO53ZFuRA== X-Received: by 2002:a63:d54f:: with SMTP id v15mr33040134pgi.107.1558347174204; Mon, 20 May 2019 03:12:54 -0700 (PDT) Received: from baolinwangubtpc.spreadtrum.com ([117.18.48.102]) by smtp.gmail.com with ESMTPSA id b3sm30098127pfr.146.2019.05.20.03.12.49 (version=TLS1 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Mon, 20 May 2019 03:12:53 -0700 (PDT) From: Baolin Wang To: adrian.hunter@intel.com, ulf.hansson@linaro.org, zhang.lyra@gmail.com, orsonzhai@gmail.com, robh+dt@kernel.org, mark.rutland@arm.com, arnd@arndb.de, olof@lixom.net Cc: baolin.wang@linaro.org, vincent.guittot@linaro.org, arm@kernel.org, linux-arm-kernel@lists.infradead.org, linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org Subject: [PATCH 7/9] dt-bindings: mmc: sprd: Add PHY DLL delay documentation Date: Mon, 20 May 2019 18:12:00 +0800 Message-Id: <96f4304c001c0cf81ecc6bec69665d239203b9b7.1558346019.git.baolin.wang@linaro.org> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: References: In-Reply-To: References: Sender: linux-mmc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Introduce some PHY DLL delays properties to help to sample the PHY clock. Signed-off-by: Baolin Wang --- .../devicetree/bindings/mmc/sdhci-sprd.txt | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/Documentation/devicetree/bindings/mmc/sdhci-sprd.txt b/Documentation/devicetree/bindings/mmc/sdhci-sprd.txt index a285c77..e675397 100644 --- a/Documentation/devicetree/bindings/mmc/sdhci-sprd.txt +++ b/Documentation/devicetree/bindings/mmc/sdhci-sprd.txt @@ -20,6 +20,23 @@ Optional properties: - assigned-clocks: the same with "sdio" clock - assigned-clock-parents: the default parent of "sdio" clock +PHY DLL delays are used to delay the data valid window, and align the window +to sampling clock. PHY DLL delays can be configured by following properties, +and each property contains 4 cells which are used to configure the clock data +write line delay value, clock read command line delay value, clock read data +positive edge delay value and clock read data negative edge delay value. +Each cell's delay value unit is cycle of the PHY clock. + +- sprd,phy-delay-legacy: Delay value for legacy timing. +- sprd,phy-delay-sd-highspeed: Delay value for SD high-speed timing. +- sprd,phy-delay-sd-uhs-sdr50: Delay value for SD UHS SDR50 timing. +- sprd,phy-delay-sd-uhs-sdr104: Delay value for SD UHS SDR50 timing. +- sprd,phy-delay-mmc-highspeed: Delay value for MMC high-speed timing. +- sprd,phy-delay-mmc-ddr52: Delay value for MMC DDR52 timing. +- sprd,phy-delay-mmc-hs200: Delay value for MMC HS200 timing. +- sprd,phy-delay-mmc-hs400: Delay value for MMC HS400 timing. +- sprd,phy-delay-mmc-hs400es: Delay value for MMC HS400 enhanced strobe timing. + Examples: sdio0: sdio@20600000 { @@ -33,6 +50,7 @@ sdio0: sdio@20600000 { assigned-clocks = <&ap_clk CLK_EMMC_2X>; assigned-clock-parents = <&rpll CLK_RPLL_390M>; + sprd,phy-delay-sd-uhs-sdr104 = <0x3f 0x7f 0x2e 0x2e>; bus-width = <8>; non-removable; no-sdio;