24 Sep
2013
24 Sep
'13
9:05 p.m.
On Tue, Sep 24, 2013 at 09:04:42PM +0200, Jean-Francois Moine wrote:
So, the probe code should be:
/* check first if an external clock is declared */ priv->extclk = devm_clk_get(&pdev->dev, "extclk"); if (!IS_ERR(priv->extclk)) { ... use the external clock ... } else {
/* get the first clock which must be the dco */ priv->clk = devm_clk_get(&pdev->dev, NULL); if (IS_ERR(priv->clk)) .. error, no clock .. .. use the internal dco ...}
Actually no - we need to get and enable the internal clock so that we can access the registers - the Dove locks solid if you access the audio block registers without its internal clock to the audio block enabled.