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6781b962d9
linux/sound
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Mohan Kumar 6781b962d9
ASoC: tegra: Fix CBB error during probe() 
When Tegra audio drivers are built as part of the kernel image,
TIMEOUT_ERR is observed from cbb-fabric. Following is seen on
Jetson AGX Orin during boot:

[    8.012482] **************************************
[    8.017423] CPU:0, Error:cbb-fabric, Errmon:2
[    8.021922]    Error Code            : TIMEOUT_ERR
[    8.025966]    Overflow              : Multiple TIMEOUT_ERR
[    8.030644]
[    8.032175]    Error Code            : TIMEOUT_ERR
[    8.036217]    MASTER_ID             : CCPLEX
[    8.039722]    Address               : 0x290a0a8
[    8.043318]    Cache                 : 0x1 -- Bufferable
[    8.047630]    Protection            : 0x2 -- Unprivileged, Non-Secure, Data Access
[    8.054628]    Access_Type           : Write

[    8.106130] WARNING: CPU: 0 PID: 124 at drivers/soc/tegra/cbb/tegra234-cbb.c:604 tegra234_cbb_isr+0x134/0x178

[    8.240602] Call trace:
[    8.243126]  tegra234_cbb_isr+0x134/0x178
[    8.247261]  __handle_irq_event_percpu+0x60/0x238
[    8.252132]  handle_irq_event+0x54/0xb8

These errors happen when MVC device, which is a child of AHUB
device, tries to access its device registers. This happens as
part of call tegra210_mvc_reset_vol_settings() in MVC device
probe().

The root cause of this problem is, the child MVC device gets
probed before the AHUB clock gets enabled. The AHUB clock is
enabled in runtime PM resume of parent AHUB device and due to
the wrong sequence of pm_runtime_enable() in AHUB driver,
runtime PM resume doesn't happen for AHUB device when MVC makes
register access.

Fix this by calling pm_runtime_enable() for parent AHUB device
before of_platform_populate() in AHUB driver. This ensures that
clock becomes available when MVC makes register access.

Fixes: 16e1bcc2ca ("ASoC: tegra: Add Tegra210 based AHUB driver")
Signed-off-by: Mohan Kumar <mkumard@nvidia.com>
Signed-off-by: Ritu Chaudhary <rituc@nvidia.com>
Signed-off-by: Sameer Pujar <spujar@nvidia.com>
Link: https://patch.msgid.link/20240823144342.4123814-3-spujar@nvidia.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2024-08-23 23:07:55 +01:00
..
ac97 driver core: have match() callback in struct bus_type take a const * 2024-07-03 15:16:54 +02:00
aoa ALSA: aoa: Use *-y instead of *-objs in Makefile 2024-05-08 18:18:08 +02:00
arm ASoC: Updates for v6.10 2024-05-13 11:39:49 +02:00
atmel ALSA: misc: Use *-y instead of *-objs in Makefile 2024-05-08 18:18:13 +02:00
core sound fixes for 6.11-rc1 2024-07-26 11:01:31 -07:00
drivers parport: Remove parport_driver.devmodel 2024-07-03 16:44:22 +02:00
firewire ALSA: firewire-lib: fix wrong value as length of header for CIP_NO_HEADER case 2024-07-27 10:28:36 +09:00
hda Driver core changes for 6.11-rc1 2024-07-25 10:42:22 -07:00
i2c ALSA: misc: Use *-y instead of *-objs in Makefile 2024-05-08 18:18:13 +02:00
isa ALSA: sb: Drop NULL check for snd_ctl_remove() 2024-06-18 12:51:50 +02:00
mips ALSA: misc: Use *-y instead of *-objs in Makefile 2024-05-08 18:18:13 +02:00
oss sound/oss/dmasound: add missing MODULE_DESCRIPTION() macro 2024-06-18 11:55:53 +02:00
parisc ALSA: misc: Use *-y instead of *-objs in Makefile 2024-05-08 18:18:13 +02:00
pci sound fixes for 6.11-rc1 2024-07-26 11:01:31 -07:00
pcmcia ALSA: misc: Use *-y instead of *-objs in Makefile 2024-05-08 18:18:13 +02:00
ppc ALSA: ppc: keywest: Drop explicit initialization of struct i2c_device_id::driver_data to 0 2024-07-09 09:16:30 +02:00
sh ALSA: misc: Use *-y instead of *-objs in Makefile 2024-05-08 18:18:13 +02:00
soc ASoC: tegra: Fix CBB error during probe() 2024-08-23 23:07:55 +01:00
sparc ALSA: misc: Use *-y instead of *-objs in Makefile 2024-05-08 18:18:13 +02:00
spi ALSA: spi: Drop NULL check for snd_ctl_remove() 2024-06-18 12:54:34 +02:00
synth ALSA: misc: Use *-y instead of *-objs in Makefile 2024-05-08 18:18:13 +02:00
usb ALSA: usb-audio: Add a quirk for Sonix HD USB Camera 2024-07-22 14:45:14 +02:00
virtio virtio: rename virtio_find_vqs_info() to virtio_find_vqs() 2024-07-17 05:20:58 -04:00
x86 Merge drm/drm-next into drm-intel-next 2024-06-19 11:38:31 +03:00
xen ALSA: xen-front: remove unused struct 'alsa_sndif_hw_param' 2024-06-13 14:14:46 +02:00
ac97_bus.c ALSA: ac97: legacy: Add missing module description 2024-05-09 10:13:07 +02:00
Kconfig
last.c
Makefile ALSA: core: Use *-y instead of *-objs in Makefile 2024-05-08 18:17:32 +02:00
sound_core.c