[3.11.y.z extended stable] Patch "clk: samsung: exynos5250: Add CLK_IGNORE_UNUSED flag for the sysreg" has been added to staging queue

[Luis Henriques]

This is a note to let you know that I have just added a patch titled

    clk: samsung: exynos5250: Add CLK_IGNORE_UNUSED flag for the sysreg

to the linux-3.11.y-queue branch of the 3.11.y.z extended stable tree 
which can be found at:

 http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.11.y-queue

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.11.y.z tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Luis

------

>From 0596dd1d381df71071357d3a0af99c72cfc8555c Mon Sep 17 00:00:00 2001
From: Abhilash Kesavan <a.kesavan at samsung.com>
Date: Wed, 11 Dec 2013 17:27:05 +0530
Subject: clk: samsung: exynos5250: Add CLK_IGNORE_UNUSED flag for the sysreg
 clock

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 at samsung.com>
Acked-by: Mike Turquette <mturquette at linaro.org>
[t.figa: Updated patch description.]
Signed-off-by: Tomasz Figa <t.figa at samsung.com>
Signed-off-by: Luis Henriques <luis.henriques at canonical.com>
---
 drivers/clk/samsung/clk-exynos5250.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/clk/samsung/clk-exynos5250.c b/drivers/clk/samsung/clk-exynos5250.c
index 6f767c5..ad9f97b 100644
--- a/drivers/clk/samsung/clk-exynos5250.c
+++ b/drivers/clk/samsung/clk-exynos5250.c
@@ -378,7 +378,8 @@ struct samsung_gate_clock exynos5250_gate_clks[] __initdata = {
 	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),
--
1.8.3.2