diff mbox

[v4,1/5] ASoC: dwc: Prepare clock before use

Message ID 63becb5f356c25b226b9dbc5825357e894d0f08b.1419342218.git.Andrew.Jackson@arm.com (mailing list archive)
State New, archived
Headers show

Commit Message

Andrew Jackson Dec. 23, 2014, 1:56 p.m. UTC 
From: Andrew Jackson <Andrew.Jackson@arm.com>

Some I2S clocks may require some time to get the clock ready
for operation and so need to be prepared before they are enabled.
So, prepare the clock as well as enabling it, but combine the
two through clk_prepare_enable.

Signed-off-by: Andrew Jackson <Andrew.Jackson@arm.com>
---
 sound/soc/dwc/designware_i2s.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

Comments

Andrew Jackson Dec. 24, 2014, 6:56 a.m. UTC | #1 
On 12/23/14 13:56, Andrew Jackson wrote:
> From: Andrew Jackson <Andrew.Jackson@arm.com>
> 
> Some I2S clocks may require some time to get the clock ready
> for operation and so need to be prepared before they are enabled.
> So, prepare the clock as well as enabling it, but combine the
> two through clk_prepare_enable.

More turkey-focussed issues: this should have a clk_disable_unprepare too.  Sigh

	Andrew

> Signed-off-by: Andrew Jackson <Andrew.Jackson@arm.com>
> ---
>  sound/soc/dwc/designware_i2s.c |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/sound/soc/dwc/designware_i2s.c b/sound/soc/dwc/designware_i2s.c
> index 06d3a34..9573ec7 100644
> --- a/sound/soc/dwc/designware_i2s.c
> +++ b/sound/soc/dwc/designware_i2s.c
> @@ -411,7 +411,7 @@ static int dw_i2s_probe(struct platform_device *pdev)
>  	if (IS_ERR(dev->clk))
>  		return  PTR_ERR(dev->clk);
>  
> -	ret = clk_enable(dev->clk);
> +	ret = clk_prepare_enable(dev->clk);
>  	if (ret < 0)
>  		goto err_clk_put;
>  
>
diff mbox

Patch

diff --git a/sound/soc/dwc/designware_i2s.c b/sound/soc/dwc/designware_i2s.c
index 06d3a34..9573ec7 100644
--- a/sound/soc/dwc/designware_i2s.c
+++ b/sound/soc/dwc/designware_i2s.c
@@ -411,7 +411,7 @@  static int dw_i2s_probe(struct platform_device *pdev)
 	if (IS_ERR(dev->clk))
 		return  PTR_ERR(dev->clk);
 
-	ret = clk_enable(dev->clk);
+	ret = clk_prepare_enable(dev->clk);
 	if (ret < 0)
 		goto err_clk_put;