From patchwork Fri May 6 09:40:48 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shawn Lin X-Patchwork-Id: 9030611 Return-Path: X-Original-To: patchwork-linux-rockchip@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id A643E9F39D for ; Fri, 6 May 2016 09:41:42 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id C075920384 for ; Fri, 6 May 2016 09:41:41 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id E296720382 for ; Fri, 6 May 2016 09:41:40 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1aycGR-0000d4-05; Fri, 06 May 2016 09:41:39 +0000 Received: from lucky1.263xmail.com ([211.157.147.130]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1aycGP-0000cK-15 for linux-rockchip@lists.infradead.org; Fri, 06 May 2016 09:41:37 +0000 Received: from shawn.lin?rock-chips.com (unknown [192.168.167.231]) by lucky1.263xmail.com (Postfix) with SMTP id D42A41EE903; Fri, 6 May 2016 17:41:10 +0800 (CST) X-263anti-spam: KSV:0; X-MAIL-GRAY: 1 X-MAIL-DELIVERY: 0 X-ABS-CHECKED: 4 X-ADDR-CHECKED: 0 X-KSVirus-check: 0 Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.263.net (Postfix) with ESMTP id A2DAD58028; Fri, 6 May 2016 17:41:11 +0800 (CST) X-RL-SENDER: shawn.lin@rock-chips.com X-FST-TO: jh80.chung@samsung.com X-SENDER-IP: 58.22.7.114 X-LOGIN-NAME: shawn.lin@rock-chips.com X-UNIQUE-TAG: X-ATTACHMENT-NUM: 0 X-SENDER: lintao@rock-chips.com X-DNS-TYPE: 0 Received: from localhost.localdomain (unknown [58.22.7.114]) by smtp.263.net (Postfix) whith ESMTP id 15583DLOY0B; Fri, 06 May 2016 17:41:12 +0800 (CST) From: Shawn Lin To: Jaehoon Chung Subject: [PATCH 1/2] mmc: dw_mmc-rockchip: add default drv phase support Date: Fri, 6 May 2016 17:40:48 +0800 Message-Id: <1462527648-24443-1-git-send-email-shawn.lin@rock-chips.com> X-Mailer: git-send-email 1.8.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20160506_024137_504226_EEED8077 X-CRM114-Status: UNSURE ( 7.67 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -1.9 (-) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, Ulf Hansson , Heiko Stuebner , Shawn Lin , Brian Norris , linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org, Doug Anderson , linux-rockchip@lists.infradead.org, Rob Herring MIME-Version: 1.0 Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+patchwork-linux-rockchip=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-6.3 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This patch introduces default drv phase exposed to dts for users to set drv phase. If default-drv-phase is not assigned, let's set it to 180 degrees. Signed-off-by: Shawn Lin --- drivers/mmc/host/dw_mmc-rockchip.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/mmc/host/dw_mmc-rockchip.c b/drivers/mmc/host/dw_mmc-rockchip.c index 8c20b81..482eff1 100644 --- a/drivers/mmc/host/dw_mmc-rockchip.c +++ b/drivers/mmc/host/dw_mmc-rockchip.c @@ -24,6 +24,7 @@ struct dw_mci_rockchip_priv_data { struct clk *drv_clk; struct clk *sample_clk; int default_sample_phase; + int default_drv_phase; }; static void dw_mci_rk3288_set_ios(struct dw_mci *host, struct mmc_ios *ios) @@ -66,6 +67,9 @@ static void dw_mci_rk3288_set_ios(struct dw_mci *host, struct mmc_ios *ios) /* Make sure we use phases which we can enumerate with */ if (!IS_ERR(priv->sample_clk)) clk_set_phase(priv->sample_clk, priv->default_sample_phase); + + if (!IS_ERR(priv->drv_clk)) + clk_set_phase(priv->drv_clk, priv->default_drv_phase); } #define NUM_PHASES 360 @@ -203,6 +207,10 @@ static int dw_mci_rk3288_parse_dt(struct dw_mci *host) &priv->default_sample_phase)) priv->default_sample_phase = 0; + if (of_property_read_u32(np, "rockchip,default-drv-phase", + &priv->default_drv_phase)) + priv->default_drv_phase = 180; + priv->drv_clk = devm_clk_get(host->dev, "ciu-drive"); if (IS_ERR(priv->drv_clk)) dev_dbg(host->dev, "ciu_drv not available\n");