Hi Paul,
On 08/01/2012 10:36 AM, Paul Walmsley wrote:
> Hi Jon et al,
>
> Here's what I'm planning to queue here. The only changes from what Jon
> posted are the patch changelog and some checkpatch fixes. If anyone
> has any final comments, please let me know.
>
>
> - Paul
>
> From: Paul Walmsley <[email protected]>
> Date: Wed, 1 Aug 2012 09:11:20 -0600
> Subject: [PATCH] ARM: OMAP2+: clockdomain/hwmod: add workaround for EMU
> clockdomain idle problems
[snip]
> diff --git a/arch/arm/mach-omap2/clockdomain2xxx_3xxx.c
> b/arch/arm/mach-omap2/clockdomain2xxx_3xxx.c
> index f99e65c..3f4b04b 100644
> --- a/arch/arm/mach-omap2/clockdomain2xxx_3xxx.c
> +++ b/arch/arm/mach-omap2/clockdomain2xxx_3xxx.c
> @@ -248,6 +248,17 @@ static int omap3xxx_clkdm_clk_enable(struct clockdomain
> *clkdm)
> if (!clkdm->clktrctrl_mask)
> return 0;
>
> + /*
> + * The CLKDM_MISSING_IDLE_REPORTING flag documentation has
> + * more details on the unpleasant problem this is working
> + * around
> + */
> + if ((clkdm->flags & CLKDM_MISSING_IDLE_REPORTING) &&
> + (clkdm->flags & CLKDM_CAN_FORCE_WAKEUP)) {
> + omap3_clkdm_wakeup(clkdm);
> + return 0;
> + }
> +
> hwsup = omap2_cm_is_clkdm_in_hwsup(clkdm->pwrdm.ptr->prcm_offs,
> clkdm->clktrctrl_mask);
>
> @@ -271,6 +282,17 @@ static int omap3xxx_clkdm_clk_disable(struct clockdomain
> *clkdm)
> if (!clkdm->clktrctrl_mask)
> return 0;
>
> + /*
> + * The CLKDM_MISSING_IDLE_REPORTING flag documentation has
> + * more details on the unpleasant problem this is working
> + * around
> + */
> + if (clkdm->flags & CLKDM_MISSING_IDLE_REPORTING &&
> + !(clkdm->flags & CLKDM_CAN_FORCE_SLEEP)) {
> + _enable_hwsup(clkdm);
> + return 0;
> + }
> +
> hwsup = omap2_cm_is_clkdm_in_hwsup(clkdm->pwrdm.ptr->prcm_offs,
> clkdm->clktrctrl_mask);
I was looking at what got merged and it appears that the above code was
added to the omap2 clkdm enable/disable functions and not omap3. I believe
that is a mistake? If so the below fixes this.
Cheers
Jon
>From 16db11f3373bc6e03254c4d1d92ee762f69cbacc Mon Sep 17 00:00:00 2001
From: Jon Hunter <[email protected]>
Date: Wed, 1 Aug 2012 09:36:13 -0600
Subject: [PATCH] ARM: OMAP3: fix workaround for EMU clockdomain
Commit b71c721 (ARM: OMAP2+: clockdomain/hwmod: add workaround for EMU
clockdomain idle problems) added a workaround for the EMU clock domain on
OMAP3/4 devices to prevent the clock domain for transitioning while it is
in use.
In the proposed patch [1] code was added to the omap3xxx_clkdm_clk_enable()
and omap3xxx_clkdm_clk_disable() functions to check for the flag
CLKDM_MISSING_IDLE_REPORTING and perform the appropriate action. However, in the
merged patch it appears that this code was added to the omap2_clkdm_clk_enable()
and omap2_clkdm_clk_disable() functions by mistake.
[1] http://marc.info/?l=linux-arm-kernel&m=134383567112518&w=2
Signed-off-by: Jon Hunter <[email protected]>
---
arch/arm/mach-omap2/clockdomain2xxx_3xxx.c | 44 ++++++++++++++--------------
1 file changed, 22 insertions(+), 22 deletions(-)
diff --git a/arch/arm/mach-omap2/clockdomain2xxx_3xxx.c
b/arch/arm/mach-omap2/clockdomain2xxx_3xxx.c
index 9a7792a..70294f5 100644
--- a/arch/arm/mach-omap2/clockdomain2xxx_3xxx.c
+++ b/arch/arm/mach-omap2/clockdomain2xxx_3xxx.c
@@ -183,17 +183,6 @@ static int omap2_clkdm_clk_enable(struct clockdomain
*clkdm)
if (!clkdm->clktrctrl_mask)
return 0;
- /*
- * The CLKDM_MISSING_IDLE_REPORTING flag documentation has
- * more details on the unpleasant problem this is working
- * around
- */
- if (clkdm->flags & CLKDM_MISSING_IDLE_REPORTING &&
- !(clkdm->flags & CLKDM_CAN_FORCE_SLEEP)) {
- _enable_hwsup(clkdm);
- return 0;
- }
-
hwsup = omap2_cm_is_clkdm_in_hwsup(clkdm->pwrdm.ptr->prcm_offs,
clkdm->clktrctrl_mask);
@@ -217,17 +206,6 @@ static int omap2_clkdm_clk_disable(struct clockdomain
*clkdm)
if (!clkdm->clktrctrl_mask)
return 0;
- /*
- * The CLKDM_MISSING_IDLE_REPORTING flag documentation has
- * more details on the unpleasant problem this is working
- * around
- */
- if ((clkdm->flags & CLKDM_MISSING_IDLE_REPORTING) &&
- (clkdm->flags & CLKDM_CAN_FORCE_WAKEUP)) {
- omap3_clkdm_wakeup(clkdm);
- return 0;
- }
-
hwsup = omap2_cm_is_clkdm_in_hwsup(clkdm->pwrdm.ptr->prcm_offs,
clkdm->clktrctrl_mask);
@@ -269,6 +247,17 @@ static int omap3xxx_clkdm_clk_enable(struct clockdomain
*clkdm)
if (!clkdm->clktrctrl_mask)
return 0;
+ /*
+ * The CLKDM_MISSING_IDLE_REPORTING flag documentation has
+ * more details on the unpleasant problem this is working
+ * around
+ */
+ if ((clkdm->flags & CLKDM_MISSING_IDLE_REPORTING) &&
+ (clkdm->flags & CLKDM_CAN_FORCE_WAKEUP)) {
+ omap3_clkdm_wakeup(clkdm);
+ return 0;
+ }
+
hwsup = omap2_cm_is_clkdm_in_hwsup(clkdm->pwrdm.ptr->prcm_offs,
clkdm->clktrctrl_mask);
@@ -292,6 +281,17 @@ static int omap3xxx_clkdm_clk_disable(struct clockdomain
*clkdm)
if (!clkdm->clktrctrl_mask)
return 0;
+ /*
+ * The CLKDM_MISSING_IDLE_REPORTING flag documentation has
+ * more details on the unpleasant problem this is working
+ * around
+ */
+ if (clkdm->flags & CLKDM_MISSING_IDLE_REPORTING &&
+ !(clkdm->flags & CLKDM_CAN_FORCE_SLEEP)) {
+ _enable_hwsup(clkdm);
+ return 0;
+ }
+
hwsup = omap2_cm_is_clkdm_in_hwsup(clkdm->pwrdm.ptr->prcm_offs,
clkdm->clktrctrl_mask);
--
1.7.9.5
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