Re: PM branch rebased to 2.6.29

[Russ Dill <russ.dill@gmail.com>]

On Mon, Mar 30, 2009 at 11:43 AM, Kevin Hilman
<khilman@deeprootsystems.com> wrote:
> Russ Dill <russ.dill@gmail.com> writes:
>
>> On Mon, Mar 30, 2009 at 3:08 AM, Premi, Sanjeev <premi@ti.com> wrote:
> [...]
>>>
>>> I had found that two drivers that could prevent clocks_off are
>>> USB and DSS because of the way they use clk_enable().
>>>
>>> Can you try building without theses drivers just for verification?
>>>
>>
>> Building without dss makes things worse:
>>
>> Powerdomain (dss_pwrdm) didn't enter target state 0
>>
>> Maybe by looking at what the dss driver is doing I can get core and
>> per to turn off.
>
> Russ,
>
> Can you try with the latest HEAD of PM branch.  After suspend/resume,
> do
>
> # cat /debug/pm_debug/registers/1
>
> and post results to list.  We can then see the exact state of PM
> registers before going into WFI.

root@beagleboard:/sys# cat /debug/pm_debug/registers/1
MOD: CM_IVA2 (48014000)
  04 => 00000037  20 => 00000001  34 => 00000001  40 => 0009680c
  44 => 00000001  48 => 00000003
MOD: CM_OCP (48004800)
  00 => 00000010  10 => 00000001
MOD: CM_MPU (48004900)
  04 => 00000037  24 => 00000001  34 => 00000001  40 => 0011f40c
  44 => 00000001  48 => 00000003  4c => 00000001
MOD: CM_CORE (48004a00)
  10 => 00000042  20 => ffffffbd  24 => 0000001f  28 => 0000000d
  30 => fffffed9  34 => 0000001f  38 => 0000000c  40 => 0000030a
  48 => 0000003f  4c => 00000003
MOD: CM_SGX (48004b00)
  20 => 00000001  48 => 00000003
MOD: CM_WKUP (48004c00)
  10 => 0000000e  20 => 000002f1  30 => 0000003f  40 => 00000015
MOD: CM_CCR (48004d00)
  00 => f8311037  04 => 00000017  20 => 00000201  30 => 00000009
  34 => 00000001  40 => 094c0c00  44 => 0001b00c  48 => 00000009
  50 => 00000001  70 => 00000003
MOD: CM_DSS (48004e00)
  20 => 00000003  30 => 00000001  40 => 00001006  48 => 00000003
MOD: CM_CAM (48004f00)
  20 => 00000001  30 => 00000001  40 => 00000004  48 => 00000003
MOD: CM_PER (48005000)
  10 => 0003e000  20 => 00001fff  30 => 0003ffff  40 => 000000ff
  44 => 00000006  48 => 00000003  4c => 00000001
MOD: CM_EMU (48005100)
  40 => 03020a50  48 => 00000002  4c => 00000001
MOD: CM_NEON (48005300)
  48 => 00000003
MOD: CM_USB (48005400)
  20 => 00000003  30 => 00000001  48 => 00000003
MOD: PRM_IVA2 (48316000)
  50 => 00000007  e0 => 00ff0f04  f8 => 00000007
MOD: PRM_OCP (48306800)
  04 => 00000010  14 => 00000001  1c => 00000201
MOD: PRM_MPU (48306900)
  58 => 00000005  d4 => 00000012  e0 => 00030104  e4 => 000000c7
  e8 => 000000c7
MOD: PRM_CORE (48306a00)
  58 => 00000301  a0 => c33ffe18  a4 => c33ffe18  a8 => c33ffe18
  e0 => 000f0304  e4 => 000000f7  e8 => 000000f7  f0 => 00000004
  f4 => 00000004  f8 => 00000004
MOD: PRM_SGX (48306b00)
  e0 => 00030104
MOD: PRM_WKUP (48306c00)
  a0 => 0000010b  a4 => 0000010b
MOD: PRM_CCR (48306d00)
  40 => 00000003
MOD: PRM_DSS (48306e00)
  58 => 00000005  a0 => 00000001  e0 => 00030104
MOD: PRM_CAM (48306f00)
  58 => 00000001  e0 => 00030104
MOD: PRM_PER (48307000)
  58 => 00000001  a0 => 0003efff  a4 => 0003efff  a8 => 0003efff
  c8 => 00000007  e0 => 00030104  e4 => 00000007  e8 => 00000007
MOD: PRM_EMU (48307100)
  58 => 00000005  e4 => 00000103
MOD: PRM_GLBL (48307200)
  20 => 00120012  24 => 00010000  2c => 301e1e30  30 => 2c1e1e2c
  34 => 00120000  38 => 00000018  54 => 00001006  58 => 00000001
  60 => 0000000e  64 => 00000050  70 => 00000088  90 => 0fff0fff
  94 => 000000ff  98 => 000000ff  9c => 00000002  a0 => 000000ff
  c4 => 00000001  e4 => 00000001
MOD: PRM_NEON (48307300)
  58 => 00000005  c8 => 00000002  e0 => 00000004  e4 => 00000003
  e8 => 00000003
MOD: PRM_USB (48307400)
  58 => 00000001  a0 => 00000001  a4 => 00000001  a8 => 00000001
  e0 => 00030104


> Also, post dump of
>

root@beagleboard:/sys# cat /debug/pm_debug/count
usbhost_pwrdm (OFF),OFF:1,RET:1,INA:0,ON:1
sgx_pwrdm (OFF),OFF:1,RET:0,INA:0,ON:1
per_pwrdm (ON),OFF:0,RET:0,INA:0,ON:1
dss_pwrdm (ON),OFF:2,RET:0,INA:0,ON:3
cam_pwrdm (OFF),OFF:1,RET:1,INA:0,ON:1
core_pwrdm (ON),OFF:0,RET:0,INA:0,ON:1
neon_pwrdm (ON),OFF:2,RET:0,INA:14100,ON:14103
mpu_pwrdm (ON),OFF:2,RET:0,INA:14100,ON:14103
iva2_pwrdm (OFF),OFF:1,RET:1,INA:0,ON:1
per_clkdm->per_pwrdm (9)
usbhost_clkdm->usbhost_pwrdm (0)
cam_clkdm->cam_pwrdm (0)
dss_clkdm->dss_pwrdm (2)
core_l4_clkdm->core_pwrdm (8)
core_l3_clkdm->core_pwrdm (4)
d2d_clkdm->core_pwrdm (0)
sgx_clkdm->sgx_pwrdm (0)
iva2_clkdm->iva2_pwrdm (0)
neon_clkdm->neon_pwrdm (0)
mpu_clkdm->mpu_pwrdm (0)
virt_opp_clkdm->wkup_pwrdm (0)
prm_clkdm->wkup_pwrdm (10)
cm_clkdm->core_pwrdm (3)



> Thanks,
>
> Kevin
>
>
>
>
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