From patchwork Mon Dec 16 09:57:09 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kishon Vijay Abraham I X-Patchwork-Id: 11293689 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 E7FEC1593 for ; Mon, 16 Dec 2019 09:59:24 +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 C3B8420725 for ; Mon, 16 Dec 2019 09:59:24 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="bW8u4bIb"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=ti.com header.i=@ti.com header.b="XrD5/KYc" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C3B8420725 Authentication-Results: mail.kernel.org; dmarc=fail (p=quarantine dis=none) header.from=ti.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=C2DS6rcncKkik+oQZEvL0qbregQQOLo7ZTx6bv5GmEs=; b=bW8u4bIbLzzoCu v6Cr2zhz3cicBfGLHzIzOshqo/cLPLm4ypzN/CDNFEYtR5q1cMvDF042Aka82bx9RqrumyCRfU5G/ a75TEAytDns4H0FZwKn285QyspqW5hFFXdLb9E24HCizdVzzVNrMGiAncn3CVs+NyTO8fdGoW7dfX FqVtLMgmVQrlDJhf8vi43WcTzJvFvStlK28j8tTrgd4flLK6uUkr3ZVR3WuThaqyC6HNTy0xXEz84 CabPJrJG5oVzS8rhbcZa6VyKu6NT2H12Iwuep75nMshTLOpR0iqtjqokCtru9E0N4otLrjJEIKebZ LzrH6gdGAQj44OYorVew==; 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 1ign9v-0008GJ-Da; Mon, 16 Dec 2019 09:59:23 +0000 Received: from lelv0143.ext.ti.com ([198.47.23.248]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1ign7F-0005mE-AY for linux-arm-kernel@lists.infradead.org; Mon, 16 Dec 2019 09:56:40 +0000 Received: from fllv0035.itg.ti.com ([10.64.41.0]) by lelv0143.ext.ti.com (8.15.2/8.15.2) with ESMTP id xBG9uSwc106137; Mon, 16 Dec 2019 03:56:28 -0600 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1576490188; bh=hOJHDmL6AFhdHJjk4PXU1SdyLIBqNQCFUPS9hn289rg=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=XrD5/KYc7fdQd9L1OvUsxoi7uX5JF+Zq0yu2PBvXqL19r9I54e5FWU3LPCcqWVfOB 3nji6WHd8N6detzrLV4YI+udsXsowZMbFmUEMco6FZFtSuQak1UTGSkshWhSg8dDK3 kJG8+Y0UlX6u+JlyvQpqBUt4iHJxMENJRKy9iEKE= Received: from DLEE113.ent.ti.com (dlee113.ent.ti.com [157.170.170.24]) by fllv0035.itg.ti.com (8.15.2/8.15.2) with ESMTP id xBG9uS4W038405; Mon, 16 Dec 2019 03:56:28 -0600 Received: from DLEE106.ent.ti.com (157.170.170.36) by DLEE113.ent.ti.com (157.170.170.24) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1847.3; Mon, 16 Dec 2019 03:56:28 -0600 Received: from lelv0326.itg.ti.com (10.180.67.84) by DLEE106.ent.ti.com (157.170.170.36) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1847.3 via Frontend Transport; Mon, 16 Dec 2019 03:56:28 -0600 Received: from a0393678ub.india.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by lelv0326.itg.ti.com (8.15.2/8.15.2) with ESMTP id xBG9tsJU084408; Mon, 16 Dec 2019 03:56:25 -0600 From: Kishon Vijay Abraham I To: Rob Herring , Anil Varughese , Roger Quadros , Jyri Sarha Subject: [PATCH v4 11/14] phy: cadence: Sierra: Set cmn_refclk_dig_div/cmn_refclk1_dig_div frequency to 25MHz Date: Mon, 16 Dec 2019 15:27:09 +0530 Message-ID: <20191216095712.13266-12-kishon@ti.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20191216095712.13266-1-kishon@ti.com> References: <20191216095712.13266-1-kishon@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191216_015637_504493_1DC85757 X-CRM114-Status: GOOD ( 15.08 ) X-Spam-Score: -2.5 (--) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (-2.5 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at https://www.dnswl.org/, medium trust [198.47.23.248 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record 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 -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.0 DKIMWL_WL_HIGH DKIMwl.org - Whitelisted High sender 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: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Kishon Vijay Abraham I Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org Set cmn_refclk_dig_div/cmn_refclk1_dig_div frequency to 25MHz as specified in "Common Module Clock Configurations" of the Cadence Sierra 16FFC Multi-Protocol PHY PMA Specification. It is set to 25MHz since the only user of Cadence Sierra SERDES, TI J721E SoC provides input clock frequency of 100MHz. For other frequencies, cmn_refclk_dig_div/cmn_refclk1_dig_div should be configured based on the "Common Module Clock Configurations". Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/cadence/phy-cadence-sierra.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/drivers/phy/cadence/phy-cadence-sierra.c b/drivers/phy/cadence/phy-cadence-sierra.c index 665a6dbc7816..82466d0e9b38 100644 --- a/drivers/phy/cadence/phy-cadence-sierra.c +++ b/drivers/phy/cadence/phy-cadence-sierra.c @@ -198,6 +198,8 @@ struct cdns_sierra_phy { struct regmap_field *phy_pll_cfg_1; struct regmap_field *pllctrl_lock[SIERRA_MAX_LANES]; struct clk *clk; + struct clk *cmn_refclk_dig_div; + struct clk *cmn_refclk1_dig_div; int nsubnodes; u32 num_lanes; bool autoconf; @@ -279,6 +281,8 @@ static int cdns_sierra_phy_init(struct phy *gphy) if (phy->autoconf) return 0; + clk_set_rate(phy->cmn_refclk_dig_div, 25000000); + clk_set_rate(phy->cmn_refclk1_dig_div, 25000000); if (ins->phy_type == PHY_TYPE_PCIE) { num_cmn_regs = phy->init_data->pcie_cmn_regs; num_ln_regs = phy->init_data->pcie_ln_regs; @@ -468,6 +472,7 @@ static int cdns_sierra_phy_probe(struct platform_device *pdev) struct resource *res; int i, ret, node = 0; void __iomem *base; + struct clk *clk; struct device_node *dn = dev->of_node, *child; if (of_get_child_count(dn) == 0) @@ -523,6 +528,22 @@ static int cdns_sierra_phy_probe(struct platform_device *pdev) return PTR_ERR(sp->apb_rst); } + clk = devm_clk_get_optional(dev, "cmn_refclk_dig_div"); + if (IS_ERR(clk)) { + dev_err(dev, "cmn_refclk_dig_div clock not found\n"); + ret = PTR_ERR(clk); + return ret; + } + sp->cmn_refclk_dig_div = clk; + + clk = devm_clk_get_optional(dev, "cmn_refclk1_dig_div"); + if (IS_ERR(clk)) { + dev_err(dev, "cmn_refclk1_dig_div clock not found\n"); + ret = PTR_ERR(clk); + return ret; + } + sp->cmn_refclk1_dig_div = clk; + ret = clk_prepare_enable(sp->clk); if (ret) return ret;