On 12/7/2018 7:23 AM, Marc Gonzalez wrote:
On 06/12/2018 23:11, Jeffrey Hugo wrote:

Add rpm smd clocks, PMIC and bus clocks which are required on MSM8998
for clients to vote on.

Signed-off-by: Jeffrey Hugo <[email protected]>
---
v2
-fix compatible ordering nits per Stephen

  .../devicetree/bindings/clock/qcom,rpmcc.txt       |  1 +
  drivers/clk/qcom/clk-smd-rpm.c                     | 62 ++++++++++++++++++++++
  include/dt-bindings/clock/qcom,rpmcc.h             |  6 +++
  3 files changed, 69 insertions(+)

Hmmm, my board seems to dislike this patch... it locks up for a while,
then reboots.

[    6.957289] ufshcd-qcom 1da4000.ufshc: ufshcd_query_flag: Sending flag query 
for idn 1 failed, err = -11
[    6.961233] ufshcd-qcom 1da4000.ufshc: ufshcd_query_flag_retry: failed with 
error -11, retries 2
[    6.970782] ufshcd-qcom 1da4000.ufshc: ufshcd_query_flag_retry: query 
attribute, opcode 6, idn 1, failed with error -11 after 3 retires
[    6.979576] ufshcd-qcom 1da4000.ufshc: ufshcd_complete_dev_init setting 
fDeviceInit flag failed with error -11
[   23.432798] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
[   23.432884] rcu:     7-...0: (1 GPs behind) idle=6a2/1/0x4000000000000000 
softirq=92/93 fqs=2626
[   23.437927] rcu:     (detected by 0, t=5252 jiffies, g=-819, q=112)
[   23.446425] Task dump for CPU 7:
[   23.452567] swapper/0       R  running task        0     1      0 0x0000002a
[   23.455806] Call trace:
[   23.462872]  __switch_to+0x94/0xe0
[   23.465009]  _regmap_write+0x58/0xb0
[   23.468452]  _regmap_update_bits+0xf0/0x110
[   23.472186]  regmap_update_bits_base+0x60/0x90
[   23.476110]  clk_disable_regmap+0x34/0x40
[   23.480614]  clk_branch_toggle+0x108/0x1b0
[   23.484681]  clk_branch2_disable+0x18/0x20
[   23.488692]  clk_disable_unused_subtree+0xc4/0xe0
[   23.492761]  clk_disable_unused+0x3c/0x130
[   23.497535]  do_one_initcall+0x5c/0x180
[   23.501557]  kernel_init_freeable+0x198/0x244
[   23.505276]  kernel_init+0x10/0x110
[   23.509768]  ret_from_fork+0x10/0x20

/*** REBOOT ***/
Format: Log Type - Time(microsec) - Message - Optional Info
Log Type: B - Since Boot(Power On Reset),  D - Delta,  S - Statistic

I need to check the ufs_reset pin and phy init seq before I can investigate
this issue, but I wanted to send a report ASAP.


Hmm. I run with clk_ignore_unused. I'm guessing that something was defined that should be used eventually, but isn't used now, and so its getting turned off when it probably shouldn't be.

I'll try to repro on my end.

--
Jeffrey Hugo
Qualcomm Datacenter Technologies as an affiliate of Qualcomm Technologies, Inc.
Qualcomm Technologies, Inc. is a member of the
Code Aurora Forum, a Linux Foundation Collaborative Project.

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