Messages in this thread | | | Subject | Re: [PATCH v2] i2c: designware: Do not require clock when SSCN and FFCN are provided | From | Suravee Suthikulanit <> | Date | Wed, 16 Dec 2015 21:01:53 -0600 |
| |
On 12/16/2015 8:56 PM, Loc Ho wrote: > Hi, > >> The current driver uses input clock source frequency to calculate >> values for [SS|FS]_[HC|LC] registers. However, when booting ACPI, we do not >> currently have a good way to provide the frequency information. >> Instead, we can leverage the SSCN and FFCN ACPI methods, which can be used >> to directly provide these values. So, the clock information should >> no longer be required during probing. >> >> However, since clk can be invalid, additional checks must be done where >> we are making use of it. >> >> Signed-off-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com> >> --- >> >> Note: This has been tested on AMD Seattle RevB for both DT and ACPI. > > Tested on X-Gene hardware also. > > -Loc >
Thanks for quick response. Suravee
| |