[PATCH 3.12 097/144] ahci: imx: Explicitly clear IMX6Q_GPR13_SATA_MPLL_CLK_EN

From: Greg Kroah-Hartman
Date: Mon Jan 06 2014 - 18:51:40 EST

3.12-stable review patch. If anyone has any objections, please let me know.


From: Marek Vasut <marex@xxxxxxx>

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 <eric.nelson@xxxxxxxxxxxxxxxxxxx>

Signed-off-by: Marek Vasut <marex@xxxxxxx>
Reviewed-by: Shawn Guo <shawn.guo@xxxxxxxxxx>
Cc: Richard Zhu <r65037@xxxxxxxxxxxxx>
Cc: Linux-IDE <linux-ide@xxxxxxxxxxxxxxx>
Signed-off-by: Tejun Heo <tj@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

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

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