Question related i2c fixed clk rate

Question related i2c fixed clk rate

[Shah, Nehal-bakulchandra]

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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Re: Question related i2c fixed clk rate

[Jarkko Nikula]

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