Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756610AbYA3Ix3 (ORCPT ); Wed, 30 Jan 2008 03:53:29 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755334AbYA3Iwi (ORCPT ); Wed, 30 Jan 2008 03:52:38 -0500 Received: from nwd2mail11.analog.com ([137.71.25.57]:51389 "EHLO nwd2mail11.analog.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753312AbYA3Iwg (ORCPT ); Wed, 30 Jan 2008 03:52:36 -0500 X-IronPort-AV: E=Sophos;i="4.25,276,1199682000"; d="scan'208";a="47621979" From: Bryan Wu To: jeff@garzik.org, netdev@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Bryan Wu Subject: [PATCH 2/8] [Blackfin] EMAC driver: define MDC_CLK=2.5MHz and caculate mdc_div according to SCLK. Date: Wed, 30 Jan 2008 16:52:22 +0800 Message-Id: <1201683148-23931-3-git-send-email-bryan.wu@analog.com> X-Mailer: git-send-email 1.5.3.4 In-Reply-To: <1201683148-23931-1-git-send-email-bryan.wu@analog.com> References: <1201683148-23931-1-git-send-email-bryan.wu@analog.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1785 Lines: 58 Signed-off-by: Bryan Wu --- drivers/net/bfin_mac.c | 16 ++++++++++++---- 1 files changed, 12 insertions(+), 4 deletions(-) diff --git a/drivers/net/bfin_mac.c b/drivers/net/bfin_mac.c index 4006a5d..ee39819 100644 --- a/drivers/net/bfin_mac.c +++ b/drivers/net/bfin_mac.c @@ -412,20 +412,26 @@ static void bf537_adjust_link(struct net_device *dev) spin_unlock_irqrestore(&lp->lock, flags); } +/* MDC = 2.5 MHz */ +#define MDC_CLK 2500000 + static int mii_probe(struct net_device *dev) { struct bf537mac_local *lp = netdev_priv(dev); struct phy_device *phydev = NULL; unsigned short sysctl; int i; + u32 sclk, mdc_div; /* Enable PHY output early */ if (!(bfin_read_VR_CTL() & PHYCLKOE)) bfin_write_VR_CTL(bfin_read_VR_CTL() | PHYCLKOE); - /* MDC = 2.5 MHz */ + sclk = get_sclk(); + mdc_div = ((sclk / MDC_CLK) / 2) - 1; + sysctl = bfin_read_EMAC_SYSCTL(); - sysctl |= SET_MDCDIV(24); + sysctl |= SET_MDCDIV(mdc_div); bfin_write_EMAC_SYSCTL(sysctl); /* search for connect PHY device */ @@ -477,8 +483,10 @@ static int mii_probe(struct net_device *dev) lp->phydev = phydev; printk(KERN_INFO "%s: attached PHY driver [%s] " - "(mii_bus:phy_addr=%s, irq=%d)\n", - DRV_NAME, phydev->drv->name, phydev->dev.bus_id, phydev->irq); + "(mii_bus:phy_addr=%s, irq=%d, mdc_clk=%dHz(mdc_div=%d)" + "@sclk=%dMHz)\n", + DRV_NAME, phydev->drv->name, phydev->dev.bus_id, phydev->irq, + MDC_CLK, mdc_div, sclk/1000000); return 0; } -- 1.5.3.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/