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| author | Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> | 2024-10-04 04:18:50 +0200 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2024-10-10 14:13:55 +0200 |
| commit | cbcb7edd099aee3f001c008fb8bbb1c0d2b7154c (patch) | |
| tree | 2bbafe28b146a1b2b09bd8337a683ef1177c9690 /Documentation/admin-guide | |
| parent | soundwire: mipi-disco: add support for DP0/DPn 'lane-list' property (diff) | |
| download | linux-cbcb7edd099aee3f001c008fb8bbb1c0d2b7154c.tar.xz linux-cbcb7edd099aee3f001c008fb8bbb1c0d2b7154c.zip | |
soundwire: intel_auxdevice: add kernel parameter for mclk divider
Add a kernel parameter to work-around discrepancies between hardware
and platform firmware, it's not unusual to see e.g. 38.4MHz listed in
_DSD properties as the SoundWire clock source, but the hardware may be
based on a 19.2 MHz mclk source.
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20241004021850.9758-1-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'Documentation/admin-guide')
| -rw-r--r-- | Documentation/admin-guide/kernel-parameters.rst | 1 | ||||
| -rw-r--r-- | Documentation/admin-guide/kernel-parameters.txt | 4 |
2 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.rst b/Documentation/admin-guide/kernel-parameters.rst index fdea7c26ef80..a64130fd19bf 100644 --- a/Documentation/admin-guide/kernel-parameters.rst +++ b/Documentation/admin-guide/kernel-parameters.rst @@ -159,6 +159,7 @@ is applicable:: SCSI Appropriate SCSI support is enabled. A lot of drivers have their options described inside the Documentation/scsi/ sub-directory. + SDW SoundWire support is enabled. SECURITY Different security models are enabled. SELINUX SELinux support is enabled. SERIAL Serial support is enabled. diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index 1518343bbe22..d7aee9ed5a1d 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -6060,6 +6060,10 @@ non-zero "wait" parameter. See weight_single and weight_many. + sdw_mclk_divider=[SDW] + Specify the MCLK divider for Intel SoundWire buses in + case the BIOS does not provide the clock rate properly. + skew_tick= [KNL,EARLY] Offset the periodic timer tick per cpu to mitigate xtime_lock contention on larger systems, and/or RCU lock contention on all systems with CONFIG_MAXSMP set. |