Re: Nokia N900 - audio TPA6130A2 problems
On Tuesday 04 August 2015 09:02:39 Peter Ujfalusi wrote: > On 08/03/2015 09:48 PM, Jarkko Nikula wrote: > > It is well possible that some regression got introduced to > > TPA6130A2 I2C communication over the years without nobody than you > > now notices. We used to do QA back in Meego N900 days but that was > > pre 3.x kernels. > > No major changes has been done to the tpa driver during the past > years... I wanted to do some updates, like moving it to regmap, but > as you said, n900 is the only user (and n9) and I do not feel > comfortable to hack on a device where I do not have serial > console... And I'm using the n900 time to time also. > > >> So maybe something similar? Kernel expects that some PM or > >> regulator parts are initialized, but they are only sometimes? > >> Just speculation... > > > > I'm thinking the same. I could figure SCL could be stuck low if TPA > > or some other chip connected to the same I2C bus is without power > > and is pulling I2C signals down. > > What would happen with the SCL stuck on i2c.2 bus if you remove the > tpa driver from the kernel? If you remove the other drivers for the > devices on i2c.2? Hi Peter and Jarkko! Do you have some code samples for testing? Or something else which I can test? This problem is still reproducible on more N900 devices and I would like to see it fixed. -- Pali Rohár pali.ro...@gmail.com signature.asc Description: This is a digitally signed message part.
Re: Nokia N900 - audio TPA6130A2 problems
Hi! Maybe some power management problem? Something is not always initialized correctly? I remember that there is some problem (maybe in NoLo - Nokia bootloader) that sometimes chainloaded U-Boot (booted via NoLo) is not able to initialize mmc chip (all read operation fails). In U-Boot I added some code to enable some parts in twl4030 regulator and after that mmc is working always... Could I get some details? Thay code should be moved to kernel, I'd really like mmc to work, no matter how machine was booted. Best regards, Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html -- To unsubscribe from this list: send the line unsubscribe linux-omap in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: Nokia N900 - audio TPA6130A2 problems
On Friday 14 August 2015 22:46:49 Pavel Machek wrote: Hi! Maybe some power management problem? Something is not always initialized correctly? I remember that there is some problem (maybe in NoLo - Nokia bootloader) that sometimes chainloaded U-Boot (booted via NoLo) is not able to initialize mmc chip (all read operation fails). In U-Boot I added some code to enable some parts in twl4030 regulator and after that mmc is working always... Could I get some details? Thay code should be moved to kernel, I'd really like mmc to work, no matter how machine was booted. Best regards, Pavel I think I was inspirited by kernel code when I added that functionality into u-boot... But I do not remember which kernel version... If you are interested and what to play with that, just look at few lines of twl4030 code in uboot rx51.c (until restore I2C access state): http://git.denx.de/?p=u-boot.git;a=blob;f=board/nokia/rx51/rx51.c;h=3d019b01428b5392fb5d0b8c7428a6d1d2ba31af;hb=HEAD#l388 All are just i2c calls to twl4030 chipset. -- Pali Rohár pali.ro...@gmail.com signature.asc Description: This is a digitally signed message part.
Re: Nokia N900 - audio TPA6130A2 problems
On 08/03/2015 09:48 PM, Jarkko Nikula wrote: It is well possible that some regression got introduced to TPA6130A2 I2C communication over the years without nobody than you now notices. We used to do QA back in Meego N900 days but that was pre 3.x kernels. No major changes has been done to the tpa driver during the past years... I wanted to do some updates, like moving it to regmap, but as you said, n900 is the only user (and n9) and I do not feel comfortable to hack on a device where I do not have serial console... And I'm using the n900 time to time also. So maybe something similar? Kernel expects that some PM or regulator parts are initialized, but they are only sometimes? Just speculation... I'm thinking the same. I could figure SCL could be stuck low if TPA or some other chip connected to the same I2C bus is without power and is pulling I2C signals down. What would happen with the SCL stuck on i2c.2 bus if you remove the tpa driver from the kernel? If you remove the other drivers for the devices on i2c.2? -- Péter -- To unsubscribe from this list: send the line unsubscribe linux-omap in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: Nokia N900 - audio TPA6130A2 problems
Hi
On 08/01/2015 01:18 PM, Pali Rohár wrote:
On Saturday 25 July 2015 15:17:13 Lars-Peter Clausen wrote:
On 07/25/2015 12:28 PM, Pali Rohár wrote:
Hello,
sometimes after rebooting Nokia N900 initializing alsa audio fails.
Here output from dmesg log when it happen:
[6.925140] tpa6130a2 2-0060: Write failed
[6.929534] tpa6130a2 2-0060: Failed to initialize chip
[6.935272] tpa6130a2: probe of 2-0060 failed with error -121
[7.624237] rx51-audio n900-audio: Failed to add TPA6130A2
controls [7.635101] rx51-audio n900-audio: ASoC: failed to
init TLV320AIC34: -19 [7.645874] rx51-audio n900-audio: ASoC:
failed to instantiate card -19 [7.665740] rx51-audio
n900-audio: snd_soc_register_card failed (-19) [8.063049] ALSA
device list:
[8.070343] No soundcards found.
Any idea what to do?
Looks like the chip is not responding. Try to add a small delay after
powerup to give the device to be fully ready, something like the
following:
--- a/sound/soc/codecs/tpa6130a2.c
+++ b/sound/soc/codecs/tpa6130a2.c
@@ -152,6 +152,8 @@ static int tpa6130a2_power(u8 power)
if (data-power_gpio = 0)
gpio_set_value(data-power_gpio, 1);
+msleep(5);
+
data-power_state = 1;
ret = tpa6130a2_initialize();
if (ret 0) {
Hello, your patch did not helped. Problem is still there...
For me v4.2-rc5 works, i.e. TPA6130A2 can still play loudly to
headphones. Don't know were there any i2c etc regression before it or
how easy it would be to reproduce.
Logs below made me thinking can it be a HW issue? Although if it is an
HW issue it shouldn't work sometimes I guess. Do you have any earlier
well known configuration you could try is it an SW regression or
something else?
[5.962585] tpa6130a2 2-0060: Write failed
[5.962707] tpa6130a2 2-0060: Failed to initialize chip
[5.962860] tpa6130a2: probe of 2-0060 failed with error -121
-121 == EREMOTEIO which is returned from i2c-omap.c when there is no ACK
from the chip.
[ 28.102233] omap_i2c 48072000.i2c: controller timed out
[ 29.463653] lp5523x 2-0032: lp5523 Programmable led chip found
[ 30.734191] omap_i2c 48072000.i2c: controller timed out waiting for start
condition to finish
[ 32.142333] i2c i2c-2: SCL is stuck low, exit recovery
If SCL is really stuck it also explains why chip doesn't acknowledge.
--
Jarkko
--
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Re: Nokia N900 - audio TPA6130A2 problems
On 08/03/2015 09:17 PM, Pali Rohár wrote: On Monday 03 August 2015 20:03:16 Jarkko Nikula wrote: Hi On 08/01/2015 01:18 PM, Pali Rohár wrote: On Saturday 25 July 2015 15:17:13 Lars-Peter Clausen wrote: Hello, your patch did not helped. Problem is still there... For me v4.2-rc5 works, i.e. TPA6130A2 can still play loudly to headphones. Don't know were there any i2c etc regression before it or how easy it would be to reproduce. Did you tested it on Nokia N900? Or other device? N900. Seems to be only user of TPA6130A2 in mainline :-) Logs below made me thinking can it be a HW issue? Although if it is an HW issue it shouldn't work sometimes I guess. Do you have any earlier well known configuration you could try is it an SW regression or something else? Stock Nokia's 2.6.28 kernel works always. With that kernel I have never seen this problem. So I do not think this is HW problem. This problem is there in more kernel versions, maybe in some older (like v3.5) is was there not so often. But do not remember correctly... It is well possible that some regression got introduced to TPA6130A2 I2C communication over the years without nobody than you now notices. We used to do QA back in Meego N900 days but that was pre 3.x kernels. Maybe some power management problem? Something is not always initialized correctly? I remember that there is some problem (maybe in NoLo - Nokia bootloader) that sometimes chainloaded U-Boot (booted via NoLo) is not able to initialize mmc chip (all read operation fails). In U-Boot I added some code to enable some parts in twl4030 regulator and after that mmc is working always... So maybe something similar? Kernel expects that some PM or regulator parts are initialized, but they are only sometimes? Just speculation... I'm thinking the same. I could figure SCL could be stuck low if TPA or some other chip connected to the same I2C bus is without power and is pulling I2C signals down. -- Jarkko -- To unsubscribe from this list: send the line unsubscribe linux-omap in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: Nokia N900 - audio TPA6130A2 problems
On Monday 03 August 2015 20:48:28 Jarkko Nikula wrote: On 08/03/2015 09:17 PM, Pali Rohár wrote: On Monday 03 August 2015 20:03:16 Jarkko Nikula wrote: Hi On 08/01/2015 01:18 PM, Pali Rohár wrote: On Saturday 25 July 2015 15:17:13 Lars-Peter Clausen wrote: Hello, your patch did not helped. Problem is still there... For me v4.2-rc5 works, i.e. TPA6130A2 can still play loudly to headphones. Don't know were there any i2c etc regression before it or how easy it would be to reproduce. Did you tested it on Nokia N900? Or other device? N900. Seems to be only user of TPA6130A2 in mainline :-) Great, can you do more tests? I get this error often after I reboot N900 (without power off) more times. But no idea if this is just sometimes. Logs below made me thinking can it be a HW issue? Although if it is an HW issue it shouldn't work sometimes I guess. Do you have any earlier well known configuration you could try is it an SW regression or something else? Stock Nokia's 2.6.28 kernel works always. With that kernel I have never seen this problem. So I do not think this is HW problem. This problem is there in more kernel versions, maybe in some older (like v3.5) is was there not so often. But do not remember correctly... It is well possible that some regression got introduced to TPA6130A2 I2C communication over the years without nobody than you now notices. We used to do QA back in Meego N900 days but that was pre 3.x kernels. Do you still have these pre 3.x kernels? This could be good starting point as 2.6.28 kernel is tooo old and heavily patches... Maybe some power management problem? Something is not always initialized correctly? I remember that there is some problem (maybe in NoLo - Nokia bootloader) that sometimes chainloaded U-Boot (booted via NoLo) is not able to initialize mmc chip (all read operation fails). In U-Boot I added some code to enable some parts in twl4030 regulator and after that mmc is working always... So maybe something similar? Kernel expects that some PM or regulator parts are initialized, but they are only sometimes? Just speculation... I'm thinking the same. I could figure SCL could be stuck low if TPA or some other chip connected to the same I2C bus is without power and is pulling I2C signals down. We should know which devices are connected to which i2c bus. So maybe detecting which i2c device is incorrectly initialized? -- Pali Rohár pali.ro...@gmail.com signature.asc Description: This is a digitally signed message part.
Re: Nokia N900 - audio TPA6130A2 problems
On Monday 03 August 2015 20:03:16 Jarkko Nikula wrote:
Hi
On 08/01/2015 01:18 PM, Pali Rohár wrote:
On Saturday 25 July 2015 15:17:13 Lars-Peter Clausen wrote:
On 07/25/2015 12:28 PM, Pali Rohár wrote:
Hello,
sometimes after rebooting Nokia N900 initializing alsa audio
fails. Here output from dmesg log when it happen:
[6.925140] tpa6130a2 2-0060: Write failed
[6.929534] tpa6130a2 2-0060: Failed to initialize chip
[6.935272] tpa6130a2: probe of 2-0060 failed with error -121
[7.624237] rx51-audio n900-audio: Failed to add TPA6130A2
controls [7.635101] rx51-audio n900-audio: ASoC: failed to
init TLV320AIC34: -19 [7.645874] rx51-audio n900-audio: ASoC:
failed to instantiate card -19 [7.665740] rx51-audio
n900-audio: snd_soc_register_card failed (-19) [8.063049]
ALSA device list:
[8.070343] No soundcards found.
Any idea what to do?
Looks like the chip is not responding. Try to add a small delay
after powerup to give the device to be fully ready, something
like the following:
--- a/sound/soc/codecs/tpa6130a2.c
+++ b/sound/soc/codecs/tpa6130a2.c
@@ -152,6 +152,8 @@ static int tpa6130a2_power(u8 power)
if (data-power_gpio = 0)
gpio_set_value(data-power_gpio, 1);
+ msleep(5);
+
data-power_state = 1;
ret = tpa6130a2_initialize();
if (ret 0) {
Hello, your patch did not helped. Problem is still there...
For me v4.2-rc5 works, i.e. TPA6130A2 can still play loudly to
headphones. Don't know were there any i2c etc regression before it or
how easy it would be to reproduce.
Did you tested it on Nokia N900? Or other device?
Logs below made me thinking can it be a HW issue? Although if it is
an HW issue it shouldn't work sometimes I guess. Do you have any
earlier well known configuration you could try is it an SW
regression or something else?
Stock Nokia's 2.6.28 kernel works always. With that kernel I have never
seen this problem. So I do not think this is HW problem.
This problem is there in more kernel versions, maybe in some older (like
v3.5) is was there not so often. But do not remember correctly...
[5.962585] tpa6130a2 2-0060: Write failed
[5.962707] tpa6130a2 2-0060: Failed to initialize chip
[5.962860] tpa6130a2: probe of 2-0060 failed with error -121
-121 == EREMOTEIO which is returned from i2c-omap.c when there is no
ACK from the chip.
Maybe some power management problem? Something is not always initialized
correctly?
I remember that there is some problem (maybe in NoLo - Nokia bootloader)
that sometimes chainloaded U-Boot (booted via NoLo) is not able to
initialize mmc chip (all read operation fails). In U-Boot I added some
code to enable some parts in twl4030 regulator and after that mmc is
working always...
So maybe something similar? Kernel expects that some PM or regulator
parts are initialized, but they are only sometimes? Just speculation...
[ 28.102233] omap_i2c 48072000.i2c: controller timed out
[ 29.463653] lp5523x 2-0032: lp5523 Programmable led chip found
[ 30.734191] omap_i2c 48072000.i2c: controller timed out waiting
for start condition to finish [ 32.142333] i2c i2c-2: SCL is
stuck low, exit recovery
If SCL is really stuck it also explains why chip doesn't acknowledge.
--
Pali Rohár
pali.ro...@gmail.com
signature.asc
Description: This is a digitally signed message part.
Re: Nokia N900 - audio TPA6130A2 problems
On Saturday 25 July 2015 15:17:13 Lars-Peter Clausen wrote:
On 07/25/2015 12:28 PM, Pali Rohár wrote:
Hello,
sometimes after rebooting Nokia N900 initializing alsa audio fails.
Here output from dmesg log when it happen:
[6.925140] tpa6130a2 2-0060: Write failed
[6.929534] tpa6130a2 2-0060: Failed to initialize chip
[6.935272] tpa6130a2: probe of 2-0060 failed with error -121
[7.624237] rx51-audio n900-audio: Failed to add TPA6130A2
controls [7.635101] rx51-audio n900-audio: ASoC: failed to
init TLV320AIC34: -19 [7.645874] rx51-audio n900-audio: ASoC:
failed to instantiate card -19 [7.665740] rx51-audio
n900-audio: snd_soc_register_card failed (-19) [8.063049] ALSA
device list:
[8.070343] No soundcards found.
Any idea what to do?
Looks like the chip is not responding. Try to add a small delay after
powerup to give the device to be fully ready, something like the
following:
--- a/sound/soc/codecs/tpa6130a2.c
+++ b/sound/soc/codecs/tpa6130a2.c
@@ -152,6 +152,8 @@ static int tpa6130a2_power(u8 power)
if (data-power_gpio = 0)
gpio_set_value(data-power_gpio, 1);
+ msleep(5);
+
data-power_state = 1;
ret = tpa6130a2_initialize();
if (ret 0) {
Hello, your patch did not helped. Problem is still there...
Now I found another problem:
[ 28.102233] omap_i2c 48072000.i2c: controller timed out
Anyway, if you are interested here is full dmesg log:
[0.00] Booting Linux on physical CPU 0x0
[0.00] Initializing cgroup subsys cpu
[0.00] Linux version 4.2.0-rc2+ (pali@Pali-Latitude) (gcc version 4.6.3
(Ubuntu/Linaro 4.6.3-1ubuntu5) ) #368
PREEMPT Sat Aug 1 12:07:46 CEST 2015
[0.00] CPU: ARMv7 Processor [411fc083] revision 3 (ARMv7), cr=10c5387d
[0.00] CPU: PIPT / VIPT nonaliasing data cache, VIPT nonaliasing
instruction cache
[0.00] Machine model: Nokia N900
[0.00] Memory policy: Data cache writeback
[0.00] On node 0 totalpages: 65280
[0.00] free_area_init_node: node 0, pgdat c069a40c, node_mem_map
cfcf9000
[0.00] Normal zone: 512 pages used for memmap
[0.00] Normal zone: 0 pages reserved
[0.00] Normal zone: 65280 pages, LIFO batch:15
[0.00] CPU: All CPU(s) started in SVC mode.
[0.00] OMAP3430/3530 ES3.1 (l2cache iva sgx neon isp )
[0.00] pcpu-alloc: s0 r0 d32768 u32768 alloc=1*32768
[0.00] pcpu-alloc: [0] 0
[0.00] Built 1 zonelists in Zone order, mobility grouping on. Total
pages: 64768
[0.00] Kernel command line: rootdelay root=/dev/ram0 log_buf_len=20M
[0.00] log_buf_len: 33554432 bytes
[0.00] early log buf free: 64332(98%)
[0.00] PID hash table entries: 1024 (order: 0, 4096 bytes)
[0.00] Dentry cache hash table entries: 32768 (order: 5, 131072 bytes)
[0.00] Inode-cache hash table entries: 16384 (order: 4, 65536 bytes)
[0.00] Memory: 203424K/261120K available (4443K kernel code, 308K
rwdata, 1720K rodata, 264K init, 266K bss,
57696K reserved, 0K cma-reserved, 0K highmem)
[0.00] Virtual kernel memory layout:
[0.00] vector : 0x - 0x1000 ( 4 kB)
[0.00] fixmap : 0xffc0 - 0xfff0 (3072 kB)
[0.00] vmalloc : 0xd080 - 0xff00 ( 744 MB)
[0.00] lowmem : 0xc000 - 0xd000 ( 256 MB)
[0.00] pkmap : 0xbfe0 - 0xc000 ( 2 MB)
[0.00] modules : 0xbf00 - 0xbfe0 ( 14 MB)
[0.00] .text : 0xc0008000 - 0xc060d0c8 (6165 kB)
[0.00] .init : 0xc060e000 - 0xc065 ( 264 kB)
[0.00] .data : 0xc065 - 0xc069d3dc ( 309 kB)
[0.00].bss : 0xc069d3dc - 0xc06dfc4c ( 267 kB)
[0.00] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[0.00] Preemptible hierarchical RCU implementation.
[0.00] Build-time adjustment of leaf fanout to 32.
[0.00] NR_IRQS:16 nr_irqs:16 16
[0.00] IRQ: Found an INTC at 0xfa20 (revision 4.0) with 96
interrupts
[0.00] Clocking rate (Crystal/Core/MPU): 19.2/332/500 MHz
[0.00] OMAP clockevent source: timer1 at 32768 Hz
[0.00] clocksource: 32k_counter: mask: 0x max_cycles:
0x, max_idle_ns: 58327039986419 ns
[0.00] sched_clock: 32 bits at 32kHz, resolution 30517ns, wraps every
6553584741ns
[0.00] OMAP clocksource: 32k_counter at 32768 Hz
[0.000305] Console: colour dummy device 80x30
[0.001586] console [tty0] enabled
[0.001647] Calibrating delay loop... 496.43 BogoMIPS (lpj=2482176)
[0.048828] pid_max: default: 32768 minimum: 301
[0.048980] Security Framework initialized
[0.049102] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
[0.049163] Mountpoint-cache hash table entries: 1024
Re: Nokia N900 - audio TPA6130A2 problems
On 07/25/2015 12:28 PM, Pali Rohár wrote:
Hello,
sometimes after rebooting Nokia N900 initializing alsa audio fails.
Here output from dmesg log when it happen:
[6.925140] tpa6130a2 2-0060: Write failed
[6.929534] tpa6130a2 2-0060: Failed to initialize chip
[6.935272] tpa6130a2: probe of 2-0060 failed with error -121
[7.624237] rx51-audio n900-audio: Failed to add TPA6130A2 controls
[7.635101] rx51-audio n900-audio: ASoC: failed to init TLV320AIC34: -19
[7.645874] rx51-audio n900-audio: ASoC: failed to instantiate card -19
[7.665740] rx51-audio n900-audio: snd_soc_register_card failed (-19)
[8.063049] ALSA device list:
[8.070343] No soundcards found.
Any idea what to do?
Looks like the chip is not responding. Try to add a small delay after
powerup to give the device to be fully ready, something like the following:
--- a/sound/soc/codecs/tpa6130a2.c
+++ b/sound/soc/codecs/tpa6130a2.c
@@ -152,6 +152,8 @@ static int tpa6130a2_power(u8 power)
if (data-power_gpio = 0)
gpio_set_value(data-power_gpio, 1);
+ msleep(5);
+
data-power_state = 1;
ret = tpa6130a2_initialize();
if (ret 0) {
--
To unsubscribe from this list: send the line unsubscribe linux-omap in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Nokia N900 - audio TPA6130A2 problems
Hello, sometimes after rebooting Nokia N900 initializing alsa audio fails. Here output from dmesg log when it happen: [6.925140] tpa6130a2 2-0060: Write failed [6.929534] tpa6130a2 2-0060: Failed to initialize chip [6.935272] tpa6130a2: probe of 2-0060 failed with error -121 [7.624237] rx51-audio n900-audio: Failed to add TPA6130A2 controls [7.635101] rx51-audio n900-audio: ASoC: failed to init TLV320AIC34: -19 [7.645874] rx51-audio n900-audio: ASoC: failed to instantiate card -19 [7.665740] rx51-audio n900-audio: snd_soc_register_card failed (-19) [8.063049] ALSA device list: [8.070343] No soundcards found. Any idea what to do? -- Pali Rohár pali.ro...@gmail.com signature.asc Description: This is a digitally signed message part.
