[PATCH 0/4] ARM/DT: edma: Get IP configuration from hardware
peter.ujfalusi at ti.com
Tue May 13 03:26:35 PDT 2014
On 05/13/2014 11:33 AM, Sekhar Nori wrote:
> On Tuesday 13 May 2014 01:13 PM, Peter Ujfalusi wrote:
>> We are requesting redundant information via DT for the driver since the very same
>> data is available in the HW: by reading and decoding the content of CCCFG
>> register we can get:
>> Number of channels: NUM_DMACH
>> Number of regions: NUM_REGN
>> Number of slots (PaRAM sets): NUM_PAENTRY
>> Number of TC/EQ: NUM_EVQUE
>> So these does not need to be provided by the DT binding.
>> The driver will no longer look for these properties from DT and they can be
>> removed from the binding documentation and from the dtsi files as well.
>> The change will not introduce regression when new kernel is booted using older
>> DTB (since we just ignore the mentioned properties).
> Peter, to which baseline do these patches apply? I tried applying them
> to v3.15-rc5 but 1/4 doesn't apply cleanly.
It is on top of next-20140509.
Now that I looked at my branch, I missed one small patch from the series which
could cause the issue (removing the memset from edma_of_parse_dt).
I'll resend ASAP with that patch included.
More information about the linux-arm-kernel