43 lines
1.6 KiB
Diff
43 lines
1.6 KiB
Diff
From 10becdb402af4fd4808a0491a726b96128c41076 Mon Sep 17 00:00:00 2001
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From: Marek Vasut <marex@denx.de>
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Date: Mon, 25 Nov 2013 09:47:00 +0100
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Subject: [PATCH] ahci: imx: Explicitly clear IMX6Q_GPR13_SATA_MPLL_CLK_EN
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We must clear this IMX6Q_GPR13_SATA_MPLL_CLK_EN bit on i.MX6Q, otherwise
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Linux will fail to find the attached drive on some boards.
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This entire fix was:
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Reported-by: Eric Nelson <eric.nelson@boundarydevices.com>
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Signed-off-by: Marek Vasut <marex@denx.de>
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Reviewed-by: Shawn Guo <shawn.guo@linaro.org>
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Cc: Richard Zhu <r65037@freescale.com>
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Cc: Linux-IDE <linux-ide@vger.kernel.org>
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Signed-off-by: Tejun Heo <tj@kernel.org>
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Cc: stable@vger.kernel.org
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---
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drivers/ata/ahci_imx.c | 3 ++-
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1 file changed, 2 insertions(+), 1 deletion(-)
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Index: linux/drivers/ata/ahci_imx.c
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===================================================================
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--- linux.orig/drivers/ata/ahci_imx.c 2013-11-29 19:28:26.000000000 +0000
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+++ linux/drivers/ata/ahci_imx.c 2013-12-03 19:42:59.693982150 +0000
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@@ -60,7 +60,7 @@
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/*
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* set PHY Paremeters, two steps to configure the GPR13,
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* one write for rest of parameters, mask of first write
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- * is 0x07fffffd, and the other one write for setting
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+ * is 0x07ffffff, and the other one write for setting
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* the mpll_clk_en.
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*/
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regmap_update_bits(imxpriv->gpr, 0x34, IMX6Q_GPR13_SATA_RX_EQ_VAL_MASK
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@@ -71,6 +71,7 @@
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| IMX6Q_GPR13_SATA_TX_ATTEN_MASK
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| IMX6Q_GPR13_SATA_TX_BOOST_MASK
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| IMX6Q_GPR13_SATA_TX_LVL_MASK
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+ | IMX6Q_GPR13_SATA_MPLL_CLK_EN
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| IMX6Q_GPR13_SATA_TX_EDGE_RATE
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, IMX6Q_GPR13_SATA_RX_EQ_VAL_3_0_DB
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| IMX6Q_GPR13_SATA_RX_LOS_LVL_SATA2M
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