[PATCH 06/11] soundwire: intel: add multi-link hw_synchronization information
From: Bard Liao
Date: Tue Aug 18 2020 - 10:35:46 EST
From: Pierre-Louis Bossart <pierre-louis.bossart@xxxxxxxxxxxxxxx>
set the flags as required by hardware implementation
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@xxxxxxxxxxxxxxx>
Signed-off-by: Bard Liao <yung-chuan.liao@xxxxxxxxxxxxxxx>
---
drivers/soundwire/intel.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/soundwire/intel.c b/drivers/soundwire/intel.c
index f4441684bd7e..89a8ad1f80e8 100644
--- 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 */
--
2.17.1