linux-kernel - [PATCH] clk: keystone: gate: don't use reserved bits

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Date:	Thu, 21 Nov 2013 17:30:51 +0200
From:	Ivan Khoronzhuk <ivan.khoronzhuk@...com>
To:	Santosh Shilimkar <santosh.shilimkar@...com>
CC:	Mike Turquette <mturquette@...aro.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	<linux-kernel@...r.kernel.org>, <grygorii.strashko@...com>,
	Ivan Khoronzhuk <ivan.khoronzhuk@...com>
Subject: [PATCH] clk: keystone: gate: don't use reserved bits

According to TRM http://www.ti.com/lit/ug/sprugv4b/sprugv4b.pdf
the Power Domain Status Register (PDSTAT) has 0-1 bits for power
domain status, but PDSTAT_STATE_MASK is defined with 0x1F. In that
case we operate with reserved bits. So correct PDSTAT_STATE_MASK
to be 0x03.

Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@...com>
---
 drivers/clk/keystone/gate.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/clk/keystone/gate.c b/drivers/clk/keystone/gate.c
index 1f333bc..995ae80 100644
--- a/drivers/clk/keystone/gate.c
+++ b/drivers/clk/keystone/gate.c
@@ -35,7 +35,7 @@
 
 #define MDSTAT_STATE_MASK	0x3f
 #define MDSTAT_MCKOUT		BIT(12)
-#define PDSTAT_STATE_MASK	0x1f
+#define PDSTAT_STATE_MASK	0x03
 #define MDCTL_FORCE		BIT(31)
 #define MDCTL_LRESET		BIT(8)
 #define PDCTL_NEXT		BIT(0)
-- 
1.7.9.5

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