This is a note to let you know that I've just added the patch titled
clk: samsung: exynos5250: Add CLK_IGNORE_UNUSED flag for the sysreg clock
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:
clk-samsung-exynos5250-add-clk_ignore_unused-flag-for-the-sysreg-clock.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 2feed5aecf5f367b92bd6b6e92afe9e3de466907 Mon Sep 17 00:00:00 2001
From: Abhilash Kesavan <a.kesavan@xxxxxxxxxxx>
Date: Wed, 11 Dec 2013 17:27:05 +0530
Subject: clk: samsung: exynos5250: Add CLK_IGNORE_UNUSED flag for the sysreg clock
From: Abhilash Kesavan <a.kesavan@xxxxxxxxxxx>
commit 2feed5aecf5f367b92bd6b6e92afe9e3de466907 upstream.
The sysreg (system register) generates control signals for various blocks
like disp1blk, i2c, mipi, usb etc. However, it gets disabled as an unused
clock at boot-up. This can lead to failures in operation of above blocks,
because they can not be configured properly if this clock is disabled.
Signed-off-by: Abhilash Kesavan <a.kesavan@xxxxxxxxxxx>
Acked-by: Mike Turquette <mturquette@xxxxxxxxxx>
[t.figa: Updated patch description.]
Signed-off-by: Tomasz Figa <t.figa@xxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/clk/samsung/clk-exynos5250.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/clk/samsung/clk-exynos5250.c
+++ b/drivers/clk/samsung/clk-exynos5250.c
@@ -407,7 +407,8 @@ static struct samsung_gate_clock exynos5
GATE(hsi2c2, "hsi2c2", "aclk66", GATE_IP_PERIC, 30, 0, 0),
GATE(hsi2c3, "hsi2c3", "aclk66", GATE_IP_PERIC, 31, 0, 0),
GATE(chipid, "chipid", "aclk66", GATE_IP_PERIS, 0, 0, 0),
- GATE(sysreg, "sysreg", "aclk66", GATE_IP_PERIS, 1, 0, 0),
+ GATE(sysreg, "sysreg", "aclk66",
+ GATE_IP_PERIS, 1, CLK_IGNORE_UNUSED, 0),
GATE(pmu, "pmu", "aclk66", GATE_IP_PERIS, 2, CLK_IGNORE_UNUSED, 0),
GATE(tzpc0, "tzpc0", "aclk66", GATE_IP_PERIS, 6, 0, 0),
GATE(tzpc1, "tzpc1", "aclk66", GATE_IP_PERIS, 7, 0, 0),
Patches currently in stable-queue which might be from a.kesavan@xxxxxxxxxxx are
queue-3.12/arm-dts-exynos5250-fix-mdma0-clock-number.patch
queue-3.12/clk-samsung-exynos5250-add-clk_ignore_unused-flag-for-the-sysreg-clock.patch
queue-3.12/clk-samsung-exynos5250-add-mdma0-clocks.patch
queue-3.12/clk-samsung-exynos5250-fix-acp-gate-register-offset.patch
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