This is a note to let you know that I've just added the patch titled
drivers/rtc/rtc-s3c.c: add .needs_src_clk to s3c6410 RTC data
to the 3.19-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:
drivers-rtc-rtc-s3c.c-add-.needs_src_clk-to-s3c6410-rtc-data.patch
and it can be found in the queue-3.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 8792f7772f4f40ffc68bad5f28311205584b734d Mon Sep 17 00:00:00 2001
From: Javier Martinez Canillas <javier.martinez@xxxxxxxxxxxxxxx>
Date: Thu, 12 Mar 2015 16:25:49 -0700
Subject: drivers/rtc/rtc-s3c.c: add .needs_src_clk to s3c6410 RTC data
From: Javier Martinez Canillas <javier.martinez@xxxxxxxxxxxxxxx>
commit 8792f7772f4f40ffc68bad5f28311205584b734d upstream.
Commit df9e26d093d3 ("rtc: s3c: add support for RTC of Exynos3250 SoC")
added an "rtc_src" DT property to specify the clock used as a source to
the S3C real-time clock.
Not all SoCs needs this so commit eaf3a659086e ("drivers/rtc/rtc-s3c.c:
fix initialization failure without rtc source clock") changed to check
the struct s3c_rtc_data .needs_src_clk to conditionally grab the clock.
But that commit didn't update the data for each IP version so the RTC
broke on the boards that needs a source clock. This is the case of at
least Exynos5250 and Exynos5440 which uses the s3c6410 RTC IP block.
This commit fixes the S3C rtc on the Exynos5250 Snow and Exynos5420
Peach Pit and Pi Chromebooks.
Signed-off-by: Javier Martinez Canillas <javier.martinez@xxxxxxxxxxxxxxx>
Cc: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>
Cc: Chanwoo Choi <cw00.choi@xxxxxxxxxxx>
Cc: Doug Anderson <dianders@xxxxxxxxxxxx>
Cc: Olof Johansson <olof@xxxxxxxxx>
Cc: Kevin Hilman <khilman@xxxxxxxxxx>
Cc: Tyler Baker <tyler.baker@xxxxxxxxxx>
Cc: Alessandro Zummo <a.zummo@xxxxxxxxxxxx>
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-s3c.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/rtc/rtc-s3c.c
+++ b/drivers/rtc/rtc-s3c.c
@@ -849,6 +849,7 @@ static struct s3c_rtc_data const s3c2443
static struct s3c_rtc_data const s3c6410_rtc_data = {
.max_user_freq = 32768,
+ .needs_src_clk = true,
.irq_handler = s3c6410_rtc_irq,
.set_freq = s3c6410_rtc_setfreq,
.enable_tick = s3c6410_rtc_enable_tick,
Patches currently in stable-queue which might be from javier.martinez@xxxxxxxxxxxxxxx are
queue-3.19/drivers-rtc-rtc-s3c.c-add-.needs_src_clk-to-s3c6410-rtc-data.patch
queue-3.19/regulator-only-enable-disabled-regulators-on-resume.patch
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