diff mbox

ARM: imx: improve status check of clock gate

Message ID 1387912887-6402-1-git-send-email-b20788@freescale.com (mailing list archive)
State New, archived
Headers show

Commit Message

Anson Huang Dec. 24, 2013, 7:21 p.m. UTC
For ccm clock gate, both 2b'11 and 2b'01 should be treated
as clock enabled, see below description in CCM, whenver CPU
trys to check clock gate's status, system will be in run mode.

2b'00: clock is off during all modes;
2b'01: clock is on in run mode, but off in wait and stop mode;
2b'10: Not applicable;
2b'11: clock is on during all modes, except stop mode.

Signed-off-by: Anson Huang <b20788@freescale.com>
---
 arch/arm/mach-imx/clk-gate2.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Shawn Guo Dec. 24, 2013, 8:23 a.m. UTC | #1
On Tue, Dec 24, 2013 at 02:21:27PM -0500, Anson Huang wrote:
> For ccm clock gate, both 2b'11 and 2b'01 should be treated
> as clock enabled, see below description in CCM, whenver CPU
> trys to check clock gate's status, system will be in run mode.
> 
> 2b'00: clock is off during all modes;
> 2b'01: clock is on in run mode, but off in wait and stop mode;
> 2b'10: Not applicable;
> 2b'11: clock is on during all modes, except stop mode.
> 
> Signed-off-by: Anson Huang <b20788@freescale.com>

Applied, thanks.
diff mbox

Patch

diff --git a/arch/arm/mach-imx/clk-gate2.c b/arch/arm/mach-imx/clk-gate2.c
index a63e415..a2ecc00 100644
--- a/arch/arm/mach-imx/clk-gate2.c
+++ b/arch/arm/mach-imx/clk-gate2.c
@@ -72,7 +72,7 @@  static int clk_gate2_is_enabled(struct clk_hw *hw)
 
 	reg = readl(gate->reg);
 
-	if (((reg >> gate->bit_idx) & 3) == 3)
+	if (((reg >> gate->bit_idx) & 1) == 1)
 		return 1;
 
 	return 0;