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SubjectRe: [PATCH v4] clk: add CS2000 Fractional-N driver
On 10/02, Kuninori Morimoto wrote:
>
> Hi Stephen
>
> Thank you for your review
>
> > > + init.parent_names = parent_names;
> > > + init.num_parents = ARRAY_SIZE(parent_names);
> > > +
> > > + priv->hw.init = &init;
> > > +
> > > + clk = clk_register(NULL, &priv->hw);
> >
> > How about using devm_clk_register() and passing the i2c device
> > down to this function?
>
> Can I confirm ?
> Does this "i2c device down" means call i2c_set_clientdata()
> in this function ?

I mean passing a struct device pointer to this function and then
using it here in the clk_register() function.

>
> > > +static int cs2000_clk_init(struct cs2000_priv *priv)
> > > +{
> > > + struct device *dev = priv_to_dev(priv);
> > > + struct device_node *np = dev->of_node;
> > > + u32 rate;
> > > + int ch = 0; /* it uses ch0 only at this point */
> > > + int ret;
> > > +
> > > + if (of_property_read_u32(np, "clock-frequency", &rate))
> >
> > Why can't we do this with DT assigned rates?
>
> What doesn this "DT assigned rates" mean ?
> this rate will be used as default output

See the "Assigned clock parents and rates" section of
Documentation/devicetree/bindings/clock/clock-bindings.txt and
commit 86be408bfbd8 (clk: Support for clock parents and rates
assigned from device tree, 2014-06-18).

--
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project


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