Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1361060

Re: Nokia N900 - audio TPA6130A2 problems

From Ivaylo Dimitrov <ivo.g.dimitrov.75@gmail.com>
Newsgroups linux.kernel
Subject Re: Nokia N900 - audio TPA6130A2 problems
Date 2016-03-19 10:00 +0100
Message-ID <rekTM-5T0-5@gated-at.bofh.it> (permalink)
References (6 earlier) <rdZZ0-4m6-5@gated-at.bofh.it> <re2tP-6i1-5@gated-at.bofh.it> <re2Nd-6re-9@gated-at.bofh.it> <re2WT-6vz-7@gated-at.bofh.it> <re4ch-8fa-1@gated-at.bofh.it>
Organization linux.* mail to news gateway

Show all headers | View raw

Hi,

On 18.03.2016 17:04, Sebastian Reichel wrote:
> Hi,
>
> On Fri, Mar 18, 2016 at 03:45:26PM +0200, Ivaylo Dimitrov wrote:
>> On 18.03.2016 15:36, Sebastian Reichel wrote:
>>
>>
>> Regulator is V28_A, which is always-on, so it is enabled no matter what
>> probe does. Anyway, I added a various delays after regulator_enable(), to no
>> success.
>

I guess we're getting closer - I put some printks in various functions 
in the twl-regulator.c, here is the result:

on power-up:

[    2.378601] twl4030ldo_get_voltage_sel VMMC2 vsel 0x00000008
[    2.384948] twl4030reg_enable VMMC2 grp 0x00000020
[    2.408416] twl4030ldo_get_voltage_sel VMMC2 vsel 0x00000008
[    7.196685] twl4030reg_is_enabled VMMC2 state 0x0000002e
[    7.202819] twl4030reg_is_enabled VMMC2 state 0x0000002e
[    7.209777] twl4030reg_is_enabled VMMC2 state 0x0000002e
[    7.215728] twl4030reg_is_enabled VMMC2 state 0x0000002e
[    7.223205] twl4030reg_is_enabled VMMC2 state 0x0000002e

after restart from stock kernel:

[    2.388610] twl4030ldo_get_voltage_sel VMMC2 vsel 0x0000000a
[    2.394958] twl4030reg_enable VMMC2 grp 0x00000028
[    2.418426] twl4030ldo_get_voltage_sel VMMC2 vsel 0x0000000a
[    7.186645] twl4030reg_is_enabled VMMC2 state 0x00000020
[    7.192718] twl4030reg_is_enabled VMMC2 state 0x00000020
[    7.199615] twl4030reg_is_enabled VMMC2 state 0x00000020
[    7.205535] twl4030reg_is_enabled VMMC2 state 0x00000020
[    7.212951] twl4030reg_is_enabled VMMC2 state 0x00000020

I don't see twl4030ldo_set_voltage_sel() for VMMC2(V28_A) regulator, 
though there are calls for VMMC1 and VAUX3.

So, it seems to me that V28_A is not enabled or correctly set-up and all 
devices connected to it does not function. And it looks like even after 
power-on VMMC2 is not correctly set-up - it is supposed to have voltage 
of 2.85V (10) but kernel leaves it to 2.60V (8). However my twl-fu ends 
here so any help is appreciated.

Ivo

Back to linux.kernel | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

Re: Nokia N900 - audio TPA6130A2 problems Ivaylo Dimitrov <ivo.g.dimitrov.75@gmail.com> - 2016-03-17 18:30 +0100
  Re: Nokia N900 - audio TPA6130A2 problems Peter Ujfalusi <peter.ujfalusi@ti.com> - 2016-03-18 11:40 +0100
    Re: Nokia N900 - audio TPA6130A2 problems Ивайло Димитров   <ivo.g.dimitrov.75@gmail.com> - 2016-03-18 14:20 +0100
      Re: Nokia N900 - audio TPA6130A2 problems Sebastian Reichel <sre@kernel.org> - 2016-03-18 14:40 +0100
        Re: Nokia N900 - audio TPA6130A2 problems Ivaylo Dimitrov <ivo.g.dimitrov.75@gmail.com> - 2016-03-18 14:50 +0100
          Re: Nokia N900 - audio TPA6130A2 problems Sebastian Reichel <sre@kernel.org> - 2016-03-18 16:10 +0100
            Re: Nokia N900 - audio TPA6130A2 problems Ivaylo Dimitrov <ivo.g.dimitrov.75@gmail.com> - 2016-03-18 17:00 +0100
            Re: Nokia N900 - audio TPA6130A2 problems Ivaylo Dimitrov <ivo.g.dimitrov.75@gmail.com> - 2016-03-19 10:00 +0100
              Re: Nokia N900 - audio TPA6130A2 problems Sebastian Reichel <sre@kernel.org> - 2016-03-20 06:20 +0100
                Re: Nokia N900 - audio TPA6130A2 problems Ivaylo Dimitrov <ivo.g.dimitrov.75@gmail.com> - 2016-03-20 20:50 +0100
                Re: Nokia N900 - audio TPA6130A2 problems Sebastian Reichel <sre@kernel.org> - 2016-03-21 01:10 +0100
                Re: Nokia N900 - audio TPA6130A2 problems Sebastian Reichel <sre@kernel.org> - 2016-03-21 02:50 +0100
                Re: Nokia N900 - audio TPA6130A2 problems Mark Brown <broonie@kernel.org> - 2016-03-21 13:10 +0100
                Re: Nokia N900 - audio TPA6130A2 problems Mark Brown <broonie@kernel.org> - 2016-03-21 12:50 +0100
                Re: Nokia N900 - audio TPA6130A2 problems Ivaylo Dimitrov <ivo.g.dimitrov.75@gmail.com> - 2016-03-21 14:40 +0100
                Re: Nokia N900 - audio TPA6130A2 problems Mark Brown <broonie@kernel.org> - 2016-03-21 14:50 +0100
                Re: Nokia N900 - audio TPA6130A2 problems Sebastian Reichel <sre@kernel.org> - 2016-03-21 16:00 +0100
                Re: Nokia N900 - audio TPA6130A2 problems Ivaylo Dimitrov <ivo.g.dimitrov.75@gmail.com> - 2016-03-21 20:40 +0100
                Re: Nokia N900 - audio TPA6130A2 problems Ivaylo Dimitrov <ivo.g.dimitrov.75@gmail.com> - 2016-03-22 09:10 +0100

csiph-web