From mboxrd@z Thu Jan 1 00:00:00 1970 From: shawn.guo@linaro.org (Shawn Guo) Date: Sun, 18 Sep 2011 19:54:11 +0800 Subject: [PATCH 3/4] net/fec: set phy_speed to the optimal frequency 2.5 MHz In-Reply-To: <1316346852-17090-1-git-send-email-shawn.guo@linaro.org> References: <1316346852-17090-1-git-send-email-shawn.guo@linaro.org> Message-ID: <1316346852-17090-4-git-send-email-shawn.guo@linaro.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org With the unnecessary 1 bit left-shift on fep->phy_speed during the calculation, the phy_speed always runs at the half frequency of the optimal one 2.5 MHz. The patch removes that 1 bit left-shift to get the optimal phy_speed. Signed-off-by: Shawn Guo --- drivers/net/fec.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/drivers/net/fec.c b/drivers/net/fec.c index 5ef0e34..04206e4 100644 --- a/drivers/net/fec.c +++ b/drivers/net/fec.c @@ -1007,7 +1007,7 @@ static int fec_enet_mii_init(struct platform_device *pdev) /* * Set MII speed to 2.5 MHz (= clk_get_rate() / 2 * phy_speed) */ - fep->phy_speed = DIV_ROUND_UP(clk_get_rate(fep->clk), 5000000) << 1; + fep->phy_speed = DIV_ROUND_UP(clk_get_rate(fep->clk), 5000000); writel(fep->phy_speed, fep->hwp + FEC_MII_SPEED); fep->mii_bus = mdiobus_alloc(); -- 1.7.4.1