From a19efb5265c3043f5598192a3493bc3c47a393c6 Mon Sep 17 00:00:00 2001 From: Bard Liao Date: Mon, 13 Jan 2020 17:11:29 -0600 Subject: [PATCH] soundwire: intel: fix factor of two in MCLK handling 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 Signed-off-by: Pierre-Louis Bossart Link: https://lore.kernel.org/r/20200113231129.19049-1-pierre-louis.bossart@linux.intel.com Signed-off-by: Vinod Koul --- drivers/soundwire/intel.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/soundwire/intel.c b/drivers/soundwire/intel.c index 0371d3d..06ef3a3 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); -- 2.7.4