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[1/1] clk: meson: meson8b: mark clk81 as critical

Message ID 20170504183201.13175-2-martin.blumenstingl@googlemail.com (mailing list archive)
State New, archived
Headers show

Commit Message

Martin Blumenstingl May 4, 2017, 6:32 p.m. UTC
Disabling clk81 results in an immediate freeze of the whole system. This
can happen "accidentally" when the last child-clock of clk81 is disabled
(in this case the common clock framework also disables clk81, even if it
was only enabled indirectly before).

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
---
 drivers/clk/meson/meson8b.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Neil Armstrong May 29, 2017, 7:57 a.m. UTC | #1
On 05/04/2017 08:32 PM, Martin Blumenstingl wrote:
> Disabling clk81 results in an immediate freeze of the whole system. This
> can happen "accidentally" when the last child-clock of clk81 is disabled
> (in this case the common clock framework also disables clk81, even if it
> was only enabled indirectly before).
> 
> Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
> ---
>  drivers/clk/meson/meson8b.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/clk/meson/meson8b.c b/drivers/clk/meson/meson8b.c
> index e9985503165c..bfd1690724de 100644
> --- a/drivers/clk/meson/meson8b.c
> +++ b/drivers/clk/meson/meson8b.c
> @@ -399,7 +399,7 @@ struct clk_gate meson8b_clk81 = {
>  		.ops = &clk_gate_ops,
>  		.parent_names = (const char *[]){ "mpeg_clk_div" },
>  		.num_parents = 1,
> -		.flags = (CLK_SET_RATE_PARENT | CLK_IGNORE_UNUSED),
> +		.flags = (CLK_SET_RATE_PARENT | CLK_IGNORE_UNUSED | CLK_IS_CRITICAL),
>  	},
>  };
>  
> 

Hi Martin,

I applied the patch resent by Jerome,

Thanks,
Neil
diff mbox

Patch

diff --git a/drivers/clk/meson/meson8b.c b/drivers/clk/meson/meson8b.c
index e9985503165c..bfd1690724de 100644
--- a/drivers/clk/meson/meson8b.c
+++ b/drivers/clk/meson/meson8b.c
@@ -399,7 +399,7 @@  struct clk_gate meson8b_clk81 = {
 		.ops = &clk_gate_ops,
 		.parent_names = (const char *[]){ "mpeg_clk_div" },
 		.num_parents = 1,
-		.flags = (CLK_SET_RATE_PARENT | CLK_IGNORE_UNUSED),
+		.flags = (CLK_SET_RATE_PARENT | CLK_IGNORE_UNUSED | CLK_IS_CRITICAL),
 	},
 };