On Wed, Apr 30, 2014 at 01:55:37PM +1000, Dave Airlie wrote:
> The docs don't mention the regs
>
> PIPE_CLK_SEL_A->C at 0x46140-46148, is there any more info on these of
> if they exist?
Attached.
-Daniel
--
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch
Title: PIPE_CLK_SEL
| PIPE_CLK_SEL |
| Register Space: |
MMIO: 0/2/0 |
| Project: |
DevHSW |
| Source: |
BSpec |
| Default Value: |
0x00000000 |
| Access: |
R/W |
| Size (in bits): |
32 |
|
| Address: |
46140h-46143h |
| Name: |
Pipe A Clock Select |
| ShortName: |
PIPE_CLK_SEL_A |
| Unit: |
dcpr |
| Custom Display Category: |
NDE Clocks |
| Custom Display FUB: |
dcpr |
| Custom Display Partition: |
par1 |
| Power: |
Always on |
| Reset: |
soft |
|
| Address: |
46144h-46147h |
| Name: |
Pipe B Clock Select |
| ShortName: |
PIPE_CLK_SEL_B |
| Unit: |
dcpr |
| Custom Display Category: |
NDE Clocks |
| Custom Display FUB: |
dcpr |
| Custom Display Partition: |
par1 |
| Power: |
Always on |
| Reset: |
soft |
|
| Address: |
46148h-4614Bh |
| Name: |
Pipe C Clock Select |
| ShortName: |
PIPE_CLK_SEL_C |
| Unit: |
dcpr |
| Custom Display Category: |
NDE Clocks |
| Custom Display FUB: |
dcpr |
| Custom Display Partition: |
par1 |
| Power: |
Always on |
| Reset: |
soft |
|
This register maps the port clock to the pipe.
There is one instance of this register format per pipe A/B/C.
|
| DWord |
Bit |
Description |
| 0 |
31:29 |
Pipe Clock Select
Select which PLL to use for this pipe.
Pipe EDP always uses DDIA clock.
| Value |
Name |
Description |
Project |
| 000b
|
None |
No PLL selected. Clock is disabled for this transcoder. |
|
| 010b
|
DDIB |
Select DDIB clock |
|
| 011b
|
DDIC |
Select DDIC clock |
|
| 100b
|
DDID |
Select DDID clock |
DevHSW |
| 100b
|
Reserved |
Reserved. DDID is not supported for ULT and must not be selected. |
DevHSW:ULT |
| 101b
|
DDIE |
Select DDIE clock |
DevHSW, EXCLUDE(DevHSW:GT0:X0) |
| Others
|
Reserved |
Reserved |
|
| Restriction |
| Restriction : This must not be changed while the pipe is enabled. |
|
| 28:0 |
Reserved
|
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