soundwire: intel: add multi-link hw_synchronization information

set the flags as required by hardware implementation

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/20200901150556.19432-7-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>

diff --git a/drivers/soundwire/intel.c b/drivers/soundwire/intel.c
index 8634d33c388c573f2dc379ce00a4191c03f36704..272826973426c891c94eb67987b0f24029154eb9 100644 (file)
--- a/drivers/soundwire/intel.c
+++ b/drivers/soundwire/intel.c
@@ -1400,7 +1400,14 @@ int intel_master_startup(struct platform_device *pdev)
                dev_dbg(dev, "Multi-link is disabled\n");
                bus->multi_link = false;
        } else {
+               /*
+                * hardware-based synchronization is required regardless
+                * of the number of segments used by a stream: SSP-based
+                * synchronization is gated by gsync when the multi-master
+                * mode is set.
+                */
                bus->multi_link = true;
+               bus->hw_sync_min_links = 1;
        }
 
        /* Initialize shim, controller */