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path: root/drivers/net/wireless/intel/iwlwifi/pcie/ctxt-info-gen3.c
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Diffstat (limited to 'drivers/net/wireless/intel/iwlwifi/pcie/ctxt-info-gen3.c')
-rw-r--r--drivers/net/wireless/intel/iwlwifi/pcie/ctxt-info-gen3.c20
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/ctxt-info-gen3.c b/drivers/net/wireless/intel/iwlwifi/pcie/ctxt-info-gen3.c
index a0352fa873d9..5512e3c630c3 100644
--- a/drivers/net/wireless/intel/iwlwifi/pcie/ctxt-info-gen3.c
+++ b/drivers/net/wireless/intel/iwlwifi/pcie/ctxt-info-gen3.c
@@ -252,6 +252,26 @@ int iwl_pcie_ctxt_info_gen3_init(struct iwl_trans *trans,
iwl_set_bit(trans, CSR_CTXT_INFO_BOOT_CTRL,
CSR_AUTO_FUNC_BOOT_ENA);
+
+ if (trans->trans_cfg->device_family == IWL_DEVICE_FAMILY_AX210) {
+ /*
+ * The firmware initializes this again later (to a smaller
+ * value), but for the boot process initialize the LTR to
+ * ~250 usec.
+ */
+ u32 val = CSR_LTR_LONG_VAL_AD_NO_SNOOP_REQ |
+ u32_encode_bits(CSR_LTR_LONG_VAL_AD_SCALE_USEC,
+ CSR_LTR_LONG_VAL_AD_NO_SNOOP_SCALE) |
+ u32_encode_bits(250,
+ CSR_LTR_LONG_VAL_AD_NO_SNOOP_VAL) |
+ CSR_LTR_LONG_VAL_AD_SNOOP_REQ |
+ u32_encode_bits(CSR_LTR_LONG_VAL_AD_SCALE_USEC,
+ CSR_LTR_LONG_VAL_AD_SNOOP_SCALE) |
+ u32_encode_bits(250, CSR_LTR_LONG_VAL_AD_SNOOP_VAL);
+
+ iwl_write32(trans, CSR_LTR_LONG_VAL_AD, val);
+ }
+
if (trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_AX210)
iwl_write_umac_prph(trans, UREG_CPU_INIT_RUN, 1);
else