linux-kernel - Re: [PATCH v2] clk: qcom: smd: Add support for MSM8998 rpm clocks

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Message-ID: <84c0fd53-98e9-ac41-f1ca-68ad6d676e9a@free.fr>
Date:   Fri, 7 Dec 2018 15:23:40 +0100
From:   Marc Gonzalez <marc.w.gonzalez@...e.fr>
To:     Jeffrey Hugo <jhugo@...eaurora.org>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>
Cc:     Bjorn Andersson <bjorn.andersson@...aro.org>,
        linux-clk <linux-clk@...r.kernel.org>,
        MSM <linux-arm-msm@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2] clk: qcom: smd: Add support for MSM8998 rpm clocks

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 <jhugo@...eaurora.org>
> ---
> 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.

Regards.