Re: [PATCH 2/6] net: ethernet: ti: cpts: add support for ext rftclk selection

From: Grygorii Strashko
Date: Tue Dec 06 2016 - 15:41:02 EST




On 12/06/2016 02:25 PM, Richard Cochran wrote:
> On Tue, Dec 06, 2016 at 01:39:40PM -0600, Grygorii Strashko wrote:
>> I come with below RFC patch. if no objection I'll move forward with it.
>
> Thanks for following through with this!
>
> The am335x will also need the MUX in its clock tree, won't it?
>

Not exactly. I do not see CPTS_RFTCLK_SEL register in trm, but looks like
it's already implemented in am335 clock tree:
cpsw_cpts_rft_clk: cpsw_cpts_rft_clk@520 {
#clock-cells = <0>;
compatible = "ti,mux-clock";
clocks = <&dpll_core_m5_ck>, <&dpll_core_m4_ck>;
reg = <0x0520>;
};

and ssigned-clock-xx can be used to change parent in board file:

&cpsw_cpts_rft_clk {
assigned-clocks = <&cpsw_cpts_rft_clk>;
assigned-clock-parents = <&dpll_core_m4_ck>;
};


--
regards,
-grygorii