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Commit 3ca5f4c0 authored by Easwar Hariharan's avatar Easwar Hariharan Committed by Doug Ledford
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IB/hfi1: Disable external device configuration requests 



QSFP CDR enablement is now controlled by determining power class
and the configuration file. We disable the DC 8051 from requesting
enablement or disabling of TX and RX CDRs by removing the code
that allowed the DC 8051 to request changes.

Reviewed-by: default avatarDean Luick <dean.luick@intel.com>
Signed-off-by: default avatarEaswar Hariharan <easwar.hariharan@intel.com>
Signed-off-by: default avatarDennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
parent d9b13c20

drivers/infiniband/hw/hfi1/platform.c

+0 −14
Original line number Diff line number Diff line
@@ -537,20 +537,6 @@ static void apply_tunings( 
	u8 precur = 0, attn = 0, postcur = 0, external_device_config = 0;

	u8 *cache = ppd->qsfp_info.cache;



	/* Enable external device config if channel is limiting active */

	read_8051_config(ppd->dd, LINK_OPTIMIZATION_SETTINGS,

			 GENERAL_CONFIG, &config_data);

	config_data &= ~(0xff << ENABLE_EXT_DEV_CONFIG_SHIFT);

	config_data |= ((u32)limiting_active << ENABLE_EXT_DEV_CONFIG_SHIFT);

	ret = load_8051_config(ppd->dd, LINK_OPTIMIZATION_SETTINGS,

			       GENERAL_CONFIG, config_data);

	if (ret != HCMD_SUCCESS)

		dd_dev_err(

			ppd->dd,

			"%s: Failed to set enable external device config\n",

			__func__);



	config_data = 0; /* re-init  */

	/* Pass tuning method to 8051 */

	read_8051_config(ppd->dd, LINK_TUNING_PARAMETERS, GENERAL_CONFIG,

			 &config_data);