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From: Eric Nelson <eric@nelint.com>
To: barebox@lists.infradead.org, s.hauer@pengutronix.de
Cc: Eric Nelson <eric@nelint.com>
Subject: [PATCH] imx6-mmdc: fix automatic power down enable in write level calibration
Date: Fri, 23 Oct 2015 12:49:44 -0700	[thread overview]
Message-ID: <1445629784-2024-1-git-send-email-eric@nelint.com> (raw)

Bit 0 of the MAPSR register controls auto power down.

Explicitly clear this bit instead of reserved bit when
exiting from mmdc_do_write_level_calibration().

Signed-off-by: Eric Nelson <eric@nelint.com>
---
 arch/arm/mach-imx/imx6-mmdc.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm/mach-imx/imx6-mmdc.c b/arch/arm/mach-imx/imx6-mmdc.c
index 64fb624..40fe0cf 100644
--- a/arch/arm/mach-imx/imx6-mmdc.c
+++ b/arch/arm/mach-imx/imx6-mmdc.c
@@ -103,9 +103,9 @@ int mmdc_do_write_level_calibration(void)
 	val |= 0x00005500;
 	writel(val, (P0_IPS + MDPDC));
 
-	/* enable Adopt power down timer: */
+	/* enable auto power down timer: */
 	val = readl(P0_IPS + MAPSR);
-	val &= 0xfffffff7;
+	val &= ~1;
 	writel(val, (P0_IPS + MAPSR));
 
 	/* clear CON_REQ */
-- 
2.6.2


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             reply	other threads:[~2015-10-23 19:50 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-10-23 19:49 Eric Nelson [this message]
2015-10-26  6:53 ` Sascha Hauer
2015-10-26 14:07   ` Eric Nelson

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