From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758199AbcEFJzP (ORCPT ); Fri, 6 May 2016 05:55:15 -0400 Received: from lucky1.263xmail.com ([211.157.147.130]:42877 "EHLO lucky1.263xmail.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757073AbcEFJzL (ORCPT ); Fri, 6 May 2016 05:55:11 -0400 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 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-DNS-TYPE: 0 From: Shawn Lin To: Jaehoon Chung Cc: Ulf Hansson , Rob Herring , linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org, Doug Anderson , Brian Norris , Heiko Stuebner , linux-rockchip@lists.infradead.org, devicetree@vger.kernel.org, Shawn Lin 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 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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"); -- 2.3.7