soundwire: cadence: remove PREQ_DELAY assignment

The hardware default is 0x1F, and the existing code does an OR with 0xF.
This is a no-op, remove.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20200317163329.25501-14-pierre-louis.bossart@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>

diff --git a/drivers/soundwire/cadence_master.c b/drivers/soundwire/cadence_master.c
index 6adf41e..420ad23 100644 (file)
--- a/drivers/soundwire/cadence_master.c
+++ b/drivers/soundwire/cadence_master.c
@@ -1107,8 +1107,7 @@ int sdw_cdns_init(struct sdw_cdns *cdns)
 
        /* Multi-master support to be added here */
 
-       /* Set frame delay between PREQ and ping frame to 15 frames */
-       val |= 0xF << SDW_REG_SHIFT(CDNS_MCP_CONFIG_MPREQ_DELAY);
+       /* leave frame delay to hardware default of 0x1F */
 
        /* Set Max cmd retry to 15 */
        val |= CDNS_MCP_CONFIG_MCMD_RETRY;