Messages in this thread Patch in this message | | | From | Pierre-Louis Bossart <> | Subject | [PATCH] soundwire: intel: fix factor of two in MCLK handling | Date | Mon, 13 Jan 2020 17:11:29 -0600 |
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From: Bard Liao <yung-chuan.liao@linux.intel.com>
Somehow Intel folks were confused, the property is 2x what the mclk frequency actually is (checked the actual bus frequency with a scope)
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> --- drivers/soundwire/intel.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/soundwire/intel.c b/drivers/soundwire/intel.c index 0371d3d5501a..06ef3a3ac080 100644 --- a/drivers/soundwire/intel.c +++ b/drivers/soundwire/intel.c @@ -880,6 +880,9 @@ static int sdw_master_read_intel_prop(struct sdw_bus *bus) "intel-sdw-ip-clock", &prop->mclk_freq); + /* the values reported by BIOS are the 2x clock, not the bus clock */ + prop->mclk_freq /= 2; + fwnode_property_read_u32(link, "intel-quirk-mask", &quirk_mask); -- 2.20.1
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