On Mon, Feb 17, 2020 at 10:59:55AM +0000, Derek [方德義] wrote: > > Subject: Re: [PATCH 1/2] ASoC: rt5682: Add CCF usage for providing I2S clks > > > + if (parent_rate != CLK_PLL2_FIN) > > > + dev_warn(component->dev, "clk %s only support %d Hz input\n", > > > + clk_name, CLK_PLL2_FIN); > > > + if (rate != CLK_48) { > > > + dev_warn(component->dev, "clk %s only support %d Hz output\n", > > > + clk_name, CLK_48); > > > + rate = CLK_48; > > > + } > > Are these genuine restrictions of the hardware or is this just being > > hard coded in the driver? > It's hard coded for an application case. > Generate a 48kHz clk with a parent 48 MHz clk. I see... obviously this is really not good quality of implementation although it doesn't actually break any external interfaces so I guess we could take it. I would at least want to see some clear comments in both the code and the changelog explaining that this limitation is just a temporary hack until a better implementation is done though.
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