Commit b62e76cf authored by Pierre-Louis Bossart's avatar Pierre-Louis Bossart Committed by Vinod Koul
Browse files

soundwire: cadence: reorder MCP_CONFIG settings 



Follow hardware programming flows and add placeholder comment for
multi-master mode.

Signed-off-by: default avatarPierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20200317163329.25501-12-pierre-louis.bossart@linux.intel.com


Signed-off-by: default avatarVinod Koul <vkoul@kernel.org>
parent 1dd6a17f

drivers/soundwire/cadence_master.c

+10 −8
Original line number Diff line number Diff line
@@ -1097,20 +1097,22 @@ int sdw_cdns_init(struct sdw_cdns *cdns) 
	/* Configure mcp config */

	val = cdns_readl(cdns, CDNS_MCP_CONFIG);



	/* Set Max cmd retry to 15 */

	val |= CDNS_MCP_CONFIG_MCMD_RETRY;

	/* Set cmd mode for Tx and Rx cmds */

	val &= ~CDNS_MCP_CONFIG_CMD;



	/* Set frame delay between PREQ and ping frame to 15 frames */

	val |= 0xF << SDW_REG_SHIFT(CDNS_MCP_CONFIG_MPREQ_DELAY);

	/* Disable sniffer mode */

	val &= ~CDNS_MCP_CONFIG_SNIFFER;



	/* Disable auto bus release */

	val &= ~CDNS_MCP_CONFIG_BUS_REL;



	/* Disable sniffer mode */

	val &= ~CDNS_MCP_CONFIG_SNIFFER;

	/* Multi-master support to be added here */



	/* Set cmd mode for Tx and Rx cmds */

	val &= ~CDNS_MCP_CONFIG_CMD;

	/* Set frame delay between PREQ and ping frame to 15 frames */

	val |= 0xF << SDW_REG_SHIFT(CDNS_MCP_CONFIG_MPREQ_DELAY);



	/* Set Max cmd retry to 15 */

	val |= CDNS_MCP_CONFIG_MCMD_RETRY;



	cdns_writel(cdns, CDNS_MCP_CONFIG, val);

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