From: Marek Vasut Date: Mon, 25 Nov 2013 08:47:00 +0000 (+0100) Subject: ahci: imx: Explicitly clear IMX6Q_GPR13_SATA_MPLL_CLK_EN X-Git-Tag: upstream/snapshot3+hdmi~3695^2~6 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=10becdb402af4fd4808a0491a726b96128c41076;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git ahci: imx: Explicitly clear IMX6Q_GPR13_SATA_MPLL_CLK_EN We must clear this IMX6Q_GPR13_SATA_MPLL_CLK_EN bit on i.MX6Q, otherwise Linux will fail to find the attached drive on some boards. This entire fix was: Reported-by: Eric Nelson Signed-off-by: Marek Vasut Reviewed-by: Shawn Guo Cc: Richard Zhu Cc: Linux-IDE Signed-off-by: Tejun Heo Cc: stable@vger.kernel.org --- diff --git a/drivers/ata/ahci_imx.c b/drivers/ata/ahci_imx.c index ae2d73f..3e23e99 100644 --- a/drivers/ata/ahci_imx.c +++ b/drivers/ata/ahci_imx.c @@ -113,7 +113,7 @@ static int imx6q_sata_init(struct device *dev, void __iomem *mmio) /* * set PHY Paremeters, two steps to configure the GPR13, * one write for rest of parameters, mask of first write - * is 0x07fffffd, and the other one write for setting + * is 0x07ffffff, and the other one write for setting * the mpll_clk_en. */ regmap_update_bits(imxpriv->gpr, 0x34, IMX6Q_GPR13_SATA_RX_EQ_VAL_MASK @@ -124,6 +124,7 @@ static int imx6q_sata_init(struct device *dev, void __iomem *mmio) | IMX6Q_GPR13_SATA_TX_ATTEN_MASK | IMX6Q_GPR13_SATA_TX_BOOST_MASK | IMX6Q_GPR13_SATA_TX_LVL_MASK + | IMX6Q_GPR13_SATA_MPLL_CLK_EN | IMX6Q_GPR13_SATA_TX_EDGE_RATE , IMX6Q_GPR13_SATA_RX_EQ_VAL_3_0_DB | IMX6Q_GPR13_SATA_RX_LOS_LVL_SATA2M