niansa-misc/linux
1
0
Fork 0
mirror of synced 2025-03-06 20:59:54 +01:00
Code Issues Projects Releases Packages Wiki Activity
linux/Documentation
History
Stephan Gerhold 37a49da9a7
ASoC: dt-bindings: qcom: sm8250: Document "pin-switches" and "widgets" 
Some sound card setups might require extra pin switches to allow
turning off certain audio components. There are two real examples for
this in smartphones/tablets based on MSM8916:

  1. Analog speaker amplifiers connected to headphone outputs.

     The MSM8916 analog codec does not have a separate "Line Out" port
     so some devices have an analog speaker amplifier connected to one
     of the headphone outputs. A pin switch is necessary to allow
     playback on headphones without also activating the speaker.

  2. External speaker codec also used as earpiece.

     Some smartphones have two front-facing (stereo) speakers that can
     be also configured to act as an earpiece during voice calls. A pin
     switch is needed to allow disabling the second speaker during
     voice calls.

There are existing bindings that allow setting up such pin switches in
simple-card.yaml. Document the same for Qcom sound cards.

One variant of example 1 above is added to the examples in the DT
schema: There is an analog speaker amplifier connected to the HPH_R
(right headphone channel) output. Adding a "Speaker" pin switch and
widget allows turning off the speaker when audio should be only played
via the connected headphones.

Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20211214142049.20422-3-stephan@gerhold.net
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-12-23 18:34:24 +00:00
..
ABI f2fs-for-5.16-rc1 2021-11-13 11:20:22 -08:00
accounting delayacct: Add sysctl to enable at runtime 2021-05-12 11:43:25 +02:00
admin-guide A slow cycle for nfsd: mainly cleanup, including Neil's patch dropping 2021-11-10 16:45:54 -08:00
arm ARM: SoC updates for v5.16 2021-11-03 16:48:32 -07:00
arm64 Merge branch 'for-next/trbe-errata' into for-next/core 2021-10-29 12:25:33 +01:00
block This is a relatively unexciting cycle for documentation. 2021-11-02 22:11:39 -07:00
bpf docs/bpf: Update documentation for BTF_KIND_DECL_TAG typedef support 2021-10-22 17:04:44 -07:00
cdrom drivers/cdrom: improved ioctl for media change detection 2021-09-14 20:05:26 -06:00
core-api Merge branch 'akpm' (patches from Andrew) 2021-11-06 14:08:17 -07:00
cpu-freq cpufreq: Remove ready() callback 2021-09-02 18:04:17 +02:00
crypto crypto: engine - Add KPP Support to Crypto Engine 2021-10-29 21:04:03 +08:00
dev-tools Merge branch 'akpm' (patches from Andrew) 2021-11-09 10:11:53 -08:00
devicetree ASoC: dt-bindings: qcom: sm8250: Document "pin-switches" and "widgets" 2021-12-23 18:34:24 +00:00
doc-guide docs: doc-guide: avoid using ReST :doc:foo markup 2021-06-17 13:24:37 -06:00
driver-api cxl for v5.16 2021-11-08 11:49:48 -08:00
fault-injection Char / Misc driver changes for 5.15-rc1 2021-09-01 08:35:06 -07:00
fb Documentation: Add leading slash to some paths 2021-03-31 13:49:19 -06:00
features parisc: Move thread_info into task struct 2021-11-01 07:35:59 +01:00
filesystems f2fs-for-5.16-rc1 2021-11-13 11:20:22 -08:00
firmware-guide Documentation: ACPI: Fix non-D0 probe _DSC object example 2021-11-10 13:59:12 +01:00
firmware_class firmware: revamp firmware documentation 2017-01-11 09:42:59 +01:00
fpga fpga: fix spelling mistakes 2021-07-21 19:54:21 -07:00
gpu drm-misc-next for 5.16: 2021-11-05 13:50:15 +10:00
hid Documentation: Add leading slash to some paths 2021-03-31 13:49:19 -06:00
hwmon Driver core changes for 5.16-rc1 2021-11-04 08:32:38 -07:00
i2c Documentation: i2c: add i2c-sysfs into index 2021-08-10 22:58:32 +02:00
ia64 docs: archis: add a per-architecture features list 2020-12-03 15:10:15 -07:00
ide docs: add some directories to the main documentation index 2019-07-15 11:03:03 -03:00
iio iio: hrtimer: Allow sub Hz granularity 2021-03-25 19:13:49 +00:00
infiniband RDMA/core: Remove FMR device ops 2020-06-02 20:32:54 -03:00
input docs: networking: Replace strncpy() with strscpy() 2021-06-04 11:21:43 -06:00
isdn
kbuild Kbuild updates for v5.16 2021-11-08 09:15:45 -08:00
kernel-hacking docs: futex: Fix kernel-doc references 2021-10-19 17:27:05 +02:00
leds leds: add new LED_FUNCTION_PLAYER for player LEDs for game controllers. 2021-10-27 09:49:29 +02:00
litmus-tests Documentation/litmus-tests: Add note on herd7 7.56 in atomic litmus test 2020-06-29 12:05:18 -07:00
livepatch docs: livepatch: Fix a typo and remove the unnecessary gaps in a sentence 2021-03-08 17:25:16 -07:00
locking doc: drm: remove TODO entry regarding DRM_MODSET_LOCK_ALL cleanup 2021-10-01 13:01:05 -04:00
m68k docs: archis: add a per-architecture features list 2020-12-03 15:10:15 -07:00
maintainer docs: use the lore redirector everywhere 2021-10-12 13:58:19 -06:00
mhi docs: Add documentation for MHI bus 2020-03-19 07:41:04 +01:00
mips docs: archis: add a per-architecture features list 2020-12-03 15:10:15 -07:00
misc-devices dw-xdata-pcie: Update outdated info and improve text format 2021-04-14 19:47:28 +02:00
netlabel
networking Networking fixes for 5.16-rc1, including fixes from bpf, can 2021-11-11 09:49:36 -08:00
nios2 docs: nios2: add missing ReST file 2020-12-07 08:35:21 -07:00
nvdimm
openrisc docs: archis: add a per-architecture features list 2020-12-03 15:10:15 -07:00
parisc docs: archis: add a per-architecture features list 2020-12-03 15:10:15 -07:00
PCI pci-v5.15-changes 2021-09-07 19:13:42 -07:00
pcmcia
power Documentation: power: include kernel-doc in Energy Model doc 2021-09-07 21:17:28 +02:00
powerpc powerpc/doc: Fix htmldocs errors 2021-08-27 00:56:34 +10:00
process docs: submitting-patches: make section about the Link: tag more explicit 2021-10-28 13:53:47 -06:00
RCU rcu: Fix undefined Kconfig macros 2021-09-13 16:32:46 -07:00
riscv riscv: Ensure BPF_JIT_REGION_START aligned with PMD size 2021-06-18 21:10:05 -07:00
s390 vfio/mdev: Remove CONFIG_VFIO_MDEV_DEVICE 2021-06-21 15:29:25 -06:00
scheduler sched/fair: Add document for burstable CFS bandwidth 2021-10-05 15:51:41 +02:00
scsi scsi: core: Kill message byte 2021-05-31 22:48:24 -04:00
security net,lsm,selinux: revert the security_sctp_assoc_established() hook 2021-11-12 12:07:02 -05:00
sh docs: archis: add a per-architecture features list 2020-12-03 15:10:15 -07:00
sound ASoC: doc: update codec example code 2021-10-25 12:36:14 +01:00
sparc docs: archis: add a per-architecture features list 2020-12-03 15:10:15 -07:00
sphinx docs: sphinx-requirements: Move sphinx_rtd_theme to top 2021-08-12 09:15:38 -06:00
sphinx-static doc-rst: Reduce CSS padding around Field 2019-10-02 10:03:06 -06:00
spi spi: Remove unused function spi_busnum_to_master() 2021-10-07 15:45:57 +01:00
staging remoteproc updates for v5.9 2020-08-11 11:17:45 -07:00
target tweewide: Fix most Shebang lines 2020-12-08 23:30:04 +09:00
timers Documentation/no_hz: Introduce "dyntick-idle mode" before using it 2021-09-27 11:31:11 -06:00
trace tracing/histogram: Update division by 0 documentation 2021-11-01 20:46:29 -04:00
translations Merge branch 'akpm' (patches from Andrew) 2021-11-06 14:08:17 -07:00
usb docs: usb: fix malformed table 2021-08-05 12:31:51 +02:00
userspace-api Char/Misc driver update for 5.16-rc1 2021-11-04 08:21:47 -07:00
virt Merge branch 'kvm-sev-move-context' into kvm-master 2021-11-11 11:02:58 -05:00
vm mm/migrate.c: remove MIGRATE_PFN_LOCKED 2021-11-11 09:34:35 -08:00
w1 dt-bindings: w1: update w1-gpio.yaml reference 2021-09-16 21:02:09 -05:00
watchdog docs: watchdog: fix obsolete include file reference in pcwd 2021-03-06 17:36:51 -07:00
x86 - Add the model number of a new, Raptor Lake CPU, to intel-family.h 2021-11-14 09:29:03 -08:00
xtensa A much quieter cycle for documentation (happily), with, one hopes, the bulk 2020-12-14 16:55:54 -08:00
.gitignore
arch.rst docs: Group arch-specific documentation under "CPU Architectures" 2021-03-15 13:35:35 -06:00
asm-annotations.rst docs: use the lore redirector everywhere 2021-10-12 13:58:19 -06:00
atomic_bitops.txt
atomic_t.txt Documentation/atomic_t: Document forward progress expectations 2021-08-04 15:16:47 +02:00
Changes docs: add back 'Documentation/Changes' file (as symlink) 2016-12-14 16:30:12 -08:00
CodingStyle
conf.py docs: pdfdocs: Adjust \headheight for fancyhdr 2021-10-12 14:09:03 -06:00
COPYING-logo
docutils.conf doc-rst: Add missing newline at end of file 2019-06-20 14:16:56 -06:00
dontdiff kbuild: generate Module.symvers only when vmlinux exists 2021-04-25 05:17:02 +09:00
index.rst docs: Group arch-specific documentation under "CPU Architectures" 2021-03-15 13:35:35 -06:00
Kconfig
logo.gif
Makefile docs: Makefile: Use CONFIG_SHELL not SHELL 2021-06-18 11:26:08 -06:00
memory-barriers.txt
SubmittingPatches doc: re-add CodingStyle and SubmittingPatches 2016-10-24 08:12:35 -02:00
watch_queue.rst docs: watch_queue: fix some warnings 2020-09-10 10:48:56 -06:00