* Question related i2c fixed clk rate
@ 2016-08-25 17:00 Shah, Nehal-bakulchandra
2016-08-26 11:29 ` Jarkko Nikula
0 siblings, 1 reply; 2+ messages in thread
From: Shah, Nehal-bakulchandra @ 2016-08-25 17:00 UTC (permalink / raw)
To: linux-i2c-owner@vger.kernel.org, linux-i2c@vger.kernel.org
Hi,
I am new to this. Appreciate your help for my query.
I am working on updating i2c-designware clock rate for AMD upcoming platform. Here new 150000000 clk rate will be supported. I want to validate this but currently in our platform I do not have any i2c lines out. Is there any tool or way to check if this is getting setup properly.
Basically I want to change
.fixed_clk_rate = 133000000 to
.fixed_clk_rate = 150000000 in acpi_apd.c file.
--
Nehal
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^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: Question related i2c fixed clk rate
2016-08-25 17:00 Question related i2c fixed clk rate Shah, Nehal-bakulchandra
@ 2016-08-26 11:29 ` Jarkko Nikula
0 siblings, 0 replies; 2+ messages in thread
From: Jarkko Nikula @ 2016-08-26 11:29 UTC (permalink / raw)
To: Shah, Nehal-bakulchandra
Cc: linux-i2c-owner@vger.kernel.org, linux-i2c@vger.kernel.org,
Ken Xue, Xiangliang Yu, Wang Hongcheng
Hi
+ Cc AMD contacts from acpi_apd.c changelog
On 08/25/2016 08:00 PM, Shah, Nehal-bakulchandra wrote:
> Hi,
> I am new to this. Appreciate your help for my query.
> I am working on updating i2c-designware clock rate for AMD upcoming platform. Here new 150000000 clk rate will be supported. I want to validate this but currently in our platform I do not have any i2c lines out. Is there any tool or way to check if this is getting setup properly.
> Basically I want to change
> .fixed_clk_rate = 133000000 to
> .fixed_clk_rate = 150000000 in acpi_apd.c file.
>
I guess what you want is to have a new static struct apd_device_desc
descriptor in drivers/acpi/acpi_apd.c and a new entry to
acpi_apd_device_ids[] for your new platform.
Something like what commits b790eb20b8e4 ("ACPI / APD: Add APM X-Gene
ACPI I2C device support") does.
--
Jarkko
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2016-08-26 11:29 ` Jarkko Nikula
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