From patchwork Tue Oct 15 20:10:29 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Simon Goldschmidt X-Patchwork-Id: 1177380 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) 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="dcpcFQo3"; dkim-atps=neutral Received: from lists.denx.de (dione.denx.de [81.169.180.215]) by ozlabs.org (Postfix) with ESMTP id 46t6Fs0BKZz9sPF for ; Wed, 16 Oct 2019 07:18:56 +1100 (AEDT) Received: by lists.denx.de (Postfix, from userid 105) id B2DC4C21DC1; Tue, 15 Oct 2019 20:15:34 +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 2C9B9C21D72; Tue, 15 Oct 2019 20:13:50 +0000 (UTC) Received: by lists.denx.de (Postfix, from userid 105) id 16E33C21D74; Tue, 15 Oct 2019 20:11:03 +0000 (UTC) Received: from mail-wr1-f67.google.com (mail-wr1-f67.google.com [209.85.221.67]) by lists.denx.de (Postfix) with ESMTPS id D7251C21DB6 for ; Tue, 15 Oct 2019 20:11:00 +0000 (UTC) Received: by mail-wr1-f67.google.com with SMTP id j18so25348207wrq.10 for ; Tue, 15 Oct 2019 13:11:00 -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:in-reply-to:references :mime-version:content-transfer-encoding; bh=IU6M/MkHHv2NgclQl6LWQlnEwBq7k5MfJl4jsPK2muo=; b=dcpcFQo3zz0KfhHcmEVfBt61+51G7lrTCqg/yZs0F1o6k0iEhNuEqoORqbY7NWkyWs qlX/2ZAl9oco+k/pk+qP/DYlPjK4XiZPayXLKQfzKhj3/zalse99lXGGTI0AtPW5MQyX eFNIPhjhnTai1Q4Q4NYzw2Ma4y+0VCtqEVVYG6Cd3VH9I8SJ7xkTMd5y3/X7YV+RHvvf 2Obdz1YXav1aw64pwdgkWGbeDMAKV3HbAixsa19K0sOQHFT51K3dh/YrM1smXjjbQlSc k4FG4cwhArvbcNOW1TH5Gx+GePMXke6NIJ/4RIt94UxgCFzks+hdrm97JlMq6mqzMp4v zdfg== 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=IU6M/MkHHv2NgclQl6LWQlnEwBq7k5MfJl4jsPK2muo=; b=izcuEC7tA3wsUgfIFTSpX5Bctq5ChtsQP1wqaUSiQl8xGlaV/SQFcilvthyc8FBp7R A0OE0MMM1AAjHsvCe94UthCniG/z53u3I31wNqYDL+WXbQoLR+qVWL2W6WYgU/CT+EtA lkzokEYahGalC/UTW7OCV/U/9Zz7F49rc6AkZdd5a9BnSqWsUGrEntCThhYjR0ukfZ61 lj4nyzmAHcNrL5femzheIUZfv47eex/rdv3YnTExKgf5OTFl/Hs1iXLUoCitKzcbK7pt tQIehAbUPxCHXKCGZd4ukbZ8s63e6Q+Lf9o6xGJYfV+YGmMD9ZP0e0bsqmZH9WXcxheW Lt3w== X-Gm-Message-State: APjAAAWCpgvApbUDKWpRw/65pLfuO3qyGSS/FB9ZxfK1e8I53sKETwX+ L77YlvNCsv1jCYl+KDoaW+o= X-Google-Smtp-Source: APXvYqzFSxqMB53ADXAsJhRQNoCGzFT20czSAmWbZ2lwLgVoNU8ScGkQeyUBisFSm/oJfxGAkTUo3g== X-Received: by 2002:adf:e98d:: with SMTP id h13mr30747880wrm.70.1571170260544; Tue, 15 Oct 2019 13:11:00 -0700 (PDT) Received: from ubuntu.home ([2a02:8071:6a3:700:9d84:c831:fe55:4622]) by smtp.gmail.com with ESMTPSA id 79sm329194wmb.7.2019.10.15.13.10.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 15 Oct 2019 13:10:59 -0700 (PDT) From: Simon Goldschmidt To: Dalon L Westergreen Date: Tue, 15 Oct 2019 22:10:29 +0200 Message-Id: <20191015201032.20156-17-simon.k.r.goldschmidt@gmail.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191015201032.20156-1-simon.k.r.goldschmidt@gmail.com> References: <20191015201032.20156-1-simon.k.r.goldschmidt@gmail.com> MIME-Version: 1.0 Cc: u-boot@lists.denx.de Subject: [U-Boot] [RFC PATCH v2 16/18] 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" Support loading clk speed via DM instead of requiring ad-hoc code. Signed-off-by: Simon Goldschmidt --- Changes in v2: None drivers/spi/cadence_qspi.c | 20 ++++++++++++++++++-- 1 file changed, 18 insertions(+), 2 deletions(-) diff --git a/drivers/spi/cadence_qspi.c b/drivers/spi/cadence_qspi.c index e2e54cd277..0b89115885 100644 --- a/drivers/spi/cadence_qspi.c +++ b/drivers/spi/cadence_qspi.c @@ -5,6 +5,7 @@ */ #include +#include #include #include #include @@ -22,12 +23,27 @@ 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); + } 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);