This is a note to let you know that I've just added the patch titled
ahci: imx: Explicitly clear IMX6Q_GPR13_SATA_MPLL_CLK_EN
to the 3.12-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
ahci-imx-explicitly-clear-imx6q_gpr13_sata_mpll_clk_en.patch
and it can be found in the queue-3.12 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 10becdb402af4fd4808a0491a726b96128c41076 Mon Sep 17 00:00:00 2001
From: Marek Vasut <marex@xxxxxxx>
Date: Mon, 25 Nov 2013 09:47:00 +0100
Subject: ahci: imx: Explicitly clear IMX6Q_GPR13_SATA_MPLL_CLK_EN
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
| 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
Patches currently in stable-queue which might be from marex@xxxxxxx are
queue-3.12/ahci-imx-explicitly-clear-imx6q_gpr13_sata_mpll_clk_en.patch
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