From patchwork Thu Oct 24 18:23:18 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Simon Goldschmidt X-Patchwork-Id: 1183456 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (no SPF record) smtp.mailfrom=lists.denx.de (client-ip=81.169.180.215; helo=lists.denx.de; envelope-from=u-boot-bounces@lists.denx.de; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b="n95Kyrc/"; dkim-atps=neutral Received: from lists.denx.de (dione.denx.de [81.169.180.215]) by ozlabs.org (Postfix) with ESMTP id 46zbGg2bhCz9sPf for ; Fri, 25 Oct 2019 05:23:38 +1100 (AEDT) Received: by lists.denx.de (Postfix, from userid 105) id EEBA9C21E2B; Thu, 24 Oct 2019 18:23:28 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on lists.denx.de X-Spam-Level: X-Spam-Status: No, score=0.0 required=5.0 tests=FREEMAIL_FROM, RCVD_IN_MSPIKE_H2, T_DKIM_INVALID autolearn=unavailable autolearn_force=no version=3.4.0 Received: from lists.denx.de (localhost [IPv6:::1]) by lists.denx.de (Postfix) with ESMTP id 118CCC21D9A; Thu, 24 Oct 2019 18:23:27 +0000 (UTC) Received: by lists.denx.de (Postfix, from userid 105) id 43B88C21D9A; Thu, 24 Oct 2019 18:23:25 +0000 (UTC) Received: from mail-wm1-f68.google.com (mail-wm1-f68.google.com [209.85.128.68]) by lists.denx.de (Postfix) with ESMTPS id F010DC21D74 for ; Thu, 24 Oct 2019 18:23:24 +0000 (UTC) Received: by mail-wm1-f68.google.com with SMTP id c22so3555471wmd.1 for ; Thu, 24 Oct 2019 11:23:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=SgJGF8W7NgGIkjAZf2c2sIF8ps1acetG7CJ8DSZrE5U=; b=n95Kyrc/XvzzetCozXb673zuZGo0R3Ra05p1SbcaKR+6TTL8pahKfiDX3eVdKazhJA 0uDigot/PMThmRAmW91Kh3qlnmw4KBG6H3xDkg5jw4q3RQPErVFCaIxeLeOCiboaQ2xe 1q4GIBwXwgwEbi8vNozAlIkddWOp9j5eT7eekPEnBjKi2i4g7yMIv0+JqU0dHXfT7kA1 sVUoh5Q7cHd6BZyESHRh+3YVjTixLA1LEQv7ykdsv1+vcItzQos9yLLoxgWH3HwNUQ/V 4AUu3gsMZmZsBM6i2J7s0JYEdWWlX0fWRjAZD4IZolVmneGFaZZOhcUTwQcoC8VRHXEr CTXA== 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:mime-version :content-transfer-encoding; bh=SgJGF8W7NgGIkjAZf2c2sIF8ps1acetG7CJ8DSZrE5U=; b=njM1nCV9/t9a2EI2QJMS2hhWHviGsQuMRkYQjGaz6h19WJJC1dzJo7ia77/5Vi4Klf 1628023EzQc3b3wwZpK0SUo80BicDuA3SawbKj+HIgNgaTd128QIQaCkKDV2Z/FA2fXg +G+thXhJwbY22JCLjoGWoA9p1e+QnR52OHTOHb/TLUndSL46epWzWw7HK2c1qxNWCI+q 44m7zeiaH8ncKog5xjyu0xoSGV0rWMaxDfSbrVT0C3usHogHuAH1pUaTC8M0gqrJofUX jZmw7NcbqBspFPPRYCxm+cA+G4og+VqPTSYTIg2+nrnYCUR0kDasbyCtUJfylMl/8Ig4 He4g== X-Gm-Message-State: APjAAAWjymGBXJHzH05w4ZUCbgAjEwK+xwqG6xXBqd7OxqZVui1PqVz/ FThGRJH66nwnQ6Gq2Iuk81dWndUC X-Google-Smtp-Source: APXvYqzuIitWTlzwWax1FxFc0+Ltxg7ZM6+uW3y5Q7xc4cK5DiHHlXI1B1UCvFo/aHBZNojIPvRj5A== X-Received: by 2002:a1c:6144:: with SMTP id v65mr6295692wmb.53.1571941404644; Thu, 24 Oct 2019 11:23:24 -0700 (PDT) Received: from ubuntu.home ([2a02:8071:6a3:700:50e:1b2d:a4c8:d388]) by smtp.gmail.com with ESMTPSA id l6sm3242674wmg.2.2019.10.24.11.23.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 24 Oct 2019 11:23:24 -0700 (PDT) From: Simon Goldschmidt X-Google-Original-From: Simon Goldschmidt To: Jagan Teki Date: Thu, 24 Oct 2019 20:23:18 +0200 Message-Id: <20191024182318.10295-1-goldsimon@gmx.de> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 Cc: Marek Vasut , u-boot@lists.denx.de, Simon Goldschmidt Subject: [U-Boot] [PATCH v2] spi: cadence_qspi: support DM_CLK X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.18 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" From: Simon Goldschmidt Support loading clk speed via DM instead of requiring ad-hoc code. Signed-off-by: Simon Goldschmidt Signed-off-by: Simon Goldschmidt --- Changes in v2: - check return value of clk_get_rate for error drivers/spi/cadence_qspi.c | 22 ++++++++++++++++++++-- 1 file changed, 20 insertions(+), 2 deletions(-) diff --git a/drivers/spi/cadence_qspi.c b/drivers/spi/cadence_qspi.c index e2e54cd277..60af99a16a 100644 --- a/drivers/spi/cadence_qspi.c +++ b/drivers/spi/cadence_qspi.c @@ -5,6 +5,7 @@ */ #include +#include #include #include #include @@ -22,12 +23,29 @@ static int cadence_spi_write_speed(struct udevice *bus, uint hz) { struct cadence_spi_platdata *plat = bus->platdata; struct cadence_spi_priv *priv = dev_get_priv(bus); + unsigned int ref_clk_hz; + struct clk clk; + int ret; + + ret = clk_get_by_index(bus, 0, &clk); + if (ret) { +#ifdef CONFIG_CQSPI_REF_CLK + ref_clk_hz = CONFIG_CQSPI_REF_CLK; +#else + return ret; +#endif + } else { + ref_clk_hz = clk_get_rate(&clk); + clk_free(&clk); + if (IS_ERR_VALUE(ref_clk_hz)) + return ref_clk_hz; + } cadence_qspi_apb_config_baudrate_div(priv->regbase, - CONFIG_CQSPI_REF_CLK, hz); + ref_clk_hz, hz); /* Reconfigure delay timing if speed is changed. */ - cadence_qspi_apb_delay(priv->regbase, CONFIG_CQSPI_REF_CLK, hz, + cadence_qspi_apb_delay(priv->regbase, ref_clk_hz, hz, plat->tshsl_ns, plat->tsd2d_ns, plat->tchsh_ns, plat->tslch_ns);