On Wednesday 07 of August 2013 14:40:15 Padmavathi Venna wrote:
> This patch registers the 16MHz oscillator clock as fixed clk.
>
> Signed-off-by: Padmavathi Venna <padma.v@xxxxxxxxxxx>
> ---
> sound/soc/samsung/smdk_wm8994.c | 12 ++++++++++++
> 1 files changed, 12 insertions(+), 0 deletions(-)
>
> diff --git a/sound/soc/samsung/smdk_wm8994.c
> b/sound/soc/samsung/smdk_wm8994.c index 581ea4a..a6edded 100644
> --- a/sound/soc/samsung/smdk_wm8994.c
> +++ b/sound/soc/samsung/smdk_wm8994.c
> @@ -9,6 +9,7 @@
>
> #include "../codecs/wm8994.h"
> #include <sound/pcm_params.h>
> +#include <linux/clk-provider.h>
> #include <linux/module.h>
> #include <linux/of.h>
>
> @@ -37,6 +38,15 @@
> /* SMDK has a 16.934MHZ crystal attached to WM8994 */
> #define SMDK_WM8994_FREQ 16934000
>
> +/* 16.9MHz fixed oscillator clock */
> +static void init_osc_clock(void)
> +{
> + struct device_node *np;
> +
> + np = of_find_compatible_node(NULL, NULL, "osc3_clk16mhz");
> + of_fixed_clk_setup(np);
> +}
> +
> static int smdk_hw_params(struct snd_pcm_substream *substream,
> struct snd_pcm_hw_params *params)
> {
> @@ -173,6 +183,8 @@ static int smdk_audio_probe(struct platform_device
> *pdev) smdk_dai[0].platform_of_node = smdk_dai[0].cpu_of_node;
> }
>
> + init_osc_clock();
> +
> ret = snd_soc_register_card(card);
>
> if (ret)
I don't think this patch is needed at all. You can use generic fixed rate
clock bindings[1] to define a fixed rate clock using device tree.
Best regards,
Tomasz
[1] - Documentation/devicetree/bindings/clock/fixed-clock.txt
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