From mboxrd@z Thu Jan 1 00:00:00 1970 From: Greg Kroah-Hartman Subject: [PATCH 3.12 097/144] ahci: imx: Explicitly clear IMX6Q_GPR13_SATA_MPLL_CLK_EN Date: Mon, 6 Jan 2014 14:37:38 -0800 Message-ID: <20140106223748.140256754@linuxfoundation.org> References: <20140106223745.326293132@linuxfoundation.org> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Return-path: In-Reply-To: <20140106223745.326293132@linuxfoundation.org> Sender: linux-kernel-owner@vger.kernel.org To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Eric Nelson , Marek Vasut , Shawn Guo , Richard Zhu , Linux-IDE , Tejun Heo List-Id: linux-ide@vger.kernel.org 3.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Marek Vasut commit 10becdb402af4fd4808a0491a726b96128c41076 upstream. 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 Signed-off-by: Greg Kroah-Hartman --- drivers/ata/ahci_imx.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/drivers/ata/ahci_imx.c +++ b/drivers/ata/ahci_imx.c @@ -60,7 +60,7 @@ static int imx6q_sata_init(struct device /* * 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 @@ -71,6 +71,7 @@ static int imx6q_sata_init(struct device | 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