Re: [RFC PATCH 3/3] devicetree: macb: Add optional property tsu-clk

From	Harini Katakam <harinikatakamlinux@gmail.com>
Newsgroups	linux.kernel
Subject	Re: [RFC PATCH 3/3] devicetree: macb: Add optional property tsu-clk
Date	2015-09-14 06:10 +0200
Message-ID	<q8tfz-3oy-11@gated-at.bofh.it> (permalink)
References	<q8tfz-3oy-13@gated-at.bofh.it> <q8tfz-3oy-15@gated-at.bofh.it> <q8tfz-3oy-17@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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On Fri, Sep 11, 2015 at 10:22 PM, Sören Brinkmann
<soren.brinkmann@xilinx.com> wrote:
> Hi Harini,
>
> On Fri, 2015-09-11 at 01:27PM +0530, Harini Katakam wrote:
>> Add TSU clock frequency to be used for 1588 support in macb driver.
>>
>> Signed-off-by: Harini Katakam <harinik@xilinx.com>
>> ---
>>  Documentation/devicetree/bindings/net/macb.txt |    3 +++
>>  1 file changed, 3 insertions(+)
>>
>> diff --git a/Documentation/devicetree/bindings/net/macb.txt b/Documentation/devicetree/bindings/net/macb.txt
>> index b5d7976..f7c0ea8 100644
>> --- a/Documentation/devicetree/bindings/net/macb.txt
>> +++ b/Documentation/devicetree/bindings/net/macb.txt
>> @@ -19,6 +19,9 @@ Required properties:
>>       Optional elements: 'tx_clk'
>>  - clocks: Phandles to input clocks.
>>
>> +Optional properties:
>> +- tsu-clk: Time stamp unit clock frequency used.
>
> Why are we not using the CCF and a clk_get_rate() in the driver?
>

If the clock source was only internal, we could use this
approach as usual. But TSU clock can be configured to
come from an external clock source or internal.

Regards,
Harini
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Re: [RFC PATCH 3/3] devicetree: macb: Add optional property tsu-clk Harini Katakam <harinikatakamlinux@gmail.com> - 2015-09-14 06:10 +0200
  Re: [RFC PATCH 3/3] devicetree: macb: Add optional property tsu-clk Boris Brezillon <boris.brezillon@free-electrons.com> - 2015-09-14 10:00 +0200
    Re: [RFC PATCH 3/3] devicetree: macb: Add optional property tsu-clk Harini Katakam <harinikatakamlinux@gmail.com> - 2015-09-14 19:40 +0200

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