This is a note to let you know that I've just added the patch titled
rtc: omap: fix clock-source configuration
to the 3.18-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:
rtc-omap-fix-clock-source-configuration.patch
and it can be found in the queue-3.18 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 44c63a570aaec3c5d5569d63b7c4a31ddd88cae0 Mon Sep 17 00:00:00 2001
From: Johan Hovold <johan@xxxxxxxxxx>
Date: Wed, 10 Dec 2014 15:52:30 -0800
Subject: rtc: omap: fix clock-source configuration
From: Johan Hovold <johan@xxxxxxxxxx>
commit 44c63a570aaec3c5d5569d63b7c4a31ddd88cae0 upstream.
This series fixes a few issues with the omap rtc-driver, cleans up a
bit, adds device abstraction, and finally adds support for the PMIC
control feature found in some revisions of this RTC IP block.
Ultimately, this allows for powering off the Beaglebone and waking it up
again on RTC alarms.
This patch (of 20):
Make sure not to reset the clock-source configuration when enabling the
32kHz clock mux.
Until the clock source can be configured through device tree we must not
overwrite settings made by the bootloader (e.g. clock-source
selection).
Fixes: cd914bba03d8 ("drivers/rtc/rtc-omap.c: add support for enabling 32khz clock")
Signed-off-by: Johan Hovold <johan@xxxxxxxxxx>
Reviewed-by: Felipe Balbi <balbi@xxxxxx>
Tested-by: Felipe Balbi <balbi@xxxxxx>
Cc: Alessandro Zummo <a.zummo@xxxxxxxxxxxx>
Cc: Tony Lindgren <tony@xxxxxxxxxxx>
Cc: Benot Cousson <bcousson@xxxxxxxxxxxx>
Cc: Lokesh Vutla <lokeshvutla@xxxxxx>
Cc: Guenter Roeck <linux@xxxxxxxxxxxx>
Cc: Sekhar Nori <nsekhar@xxxxxx>
Cc: Tero Kristo <t-kristo@xxxxxx>
Cc: Keerthy J <j-keerthy@xxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/rtc/rtc-omap.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
--- a/drivers/rtc/rtc-omap.c
+++ b/drivers/rtc/rtc-omap.c
@@ -431,8 +431,10 @@ static int __init omap_rtc_probe(struct
rtc_write(0, OMAP_RTC_INTERRUPTS_REG);
/* enable RTC functional clock */
- if (id_entry->driver_data & OMAP_RTC_HAS_32KCLK_EN)
- rtc_writel(OMAP_RTC_OSC_32KCLK_EN, OMAP_RTC_OSC_REG);
+ if (id_entry->driver_data & OMAP_RTC_HAS_32KCLK_EN) {
+ reg = rtc_read(OMAP_RTC_OSC_REG);
+ rtc_writel(reg | OMAP_RTC_OSC_32KCLK_EN, OMAP_RTC_OSC_REG);
+ }
/* clear old status */
reg = rtc_read(OMAP_RTC_STATUS_REG);
Patches currently in stable-queue which might be from johan@xxxxxxxxxx are
queue-3.18/rtc-omap-fix-missing-wakealarm-attribute.patch
queue-3.18/rtc-omap-fix-clock-source-configuration.patch
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