mb/google/nissa/var/craaskov: Update eMMC DLL settings

Update eMMC DLL settings based on Craaskov board.

BUG=b:318323026
TEST=executed 2500 cycles of cold boot successfully on all eMMC sku

Change-Id: I56f8329c28261c2bcae9d058da929be6763b293c
Signed-off-by: Ian Feng <ian_feng@compal.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/81304
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Simon Yang <simon1.yang@intel.com>
Reviewed-by: Eric Lai <ericllai@google.com>

1 files changed, 45 insertions, 0 deletions

diff --git a/src/mainboard/google/brya/variants/craaskov/overridetree.cb b/src/mainboard/google/brya/variants/craaskov/overridetree.cb
index a070b467c0..686c829349 100644
--- a/src/mainboard/google/brya/variants/craaskov/overridetree.cb
+++ b/src/mainboard/google/brya/variants/craaskov/overridetree.cb
@@ -8,6 +8,51 @@ end
 chip soc/intel/alderlake
 	register "sagv" = "SaGv_Enabled"
 
+	# EMMC Tx CMD Delay
+	# Refer to EDS-Vol2-42.3.7.
+	# [14:8] steps of delay for DDR mode, each 125ps, range: 0 - 39.
+	# [6:0] steps of delay for SDR mode, each 125ps, range: 0 - 39.
+	register "common_soc_config.emmc_dll.emmc_tx_cmd_cntl" = "0x505"
+
+	# EMMC TX DATA Delay 1
+	# Refer to EDS-Vol2-42.3.8.
+	# [14:8] steps of delay for HS400, each 125ps, range: 0 - 78.
+	# [6:0] steps of delay for SDR104/HS200, each 125ps, range: 0 - 79.
+	register "common_soc_config.emmc_dll.emmc_tx_data_cntl1" = "0x909"
+
+	# EMMC TX DATA Delay 2
+	# Refer to EDS-Vol2-42.3.9.
+	# [30:24] steps of delay for SDR50, each 125ps, range: 0 - 79.
+	# [22:16] steps of delay for DDR50, each 125ps, range: 0 - 78.
+	# [14:8] steps of delay for SDR25/HS50, each 125ps, range: 0 -79.
+	# [6:0] steps of delay for SDR12, each 125ps. Range: 0 - 79.
+	register "common_soc_config.emmc_dll.emmc_tx_data_cntl2" = "0x1C2A2828"
+
+	# EMMC RX CMD/DATA Delay 1
+	# Refer to EDS-Vol2-42.3.10.
+	# [30:24] steps of delay for SDR50, each 125ps, range: 0 - 119.
+	# [22:16] steps of delay for DDR50, each 125ps, range: 0 - 78.
+	# [14:8] steps of delay for SDR25/HS50, each 125ps, range: 0 - 119.
+	# [6:0] steps of delay for SDR12, each 125ps, range: 0 - 119.
+	register "common_soc_config.emmc_dll.emmc_rx_cmd_data_cntl1" = "0x1C1B4F1B"
+
+	# EMMC RX CMD/DATA Delay 2
+	# Refer to EDS-Vol2-42.3.12.
+	# [17:16] stands for Rx Clock before Output Buffer,
+	#         00: Rx clock after output buffer,
+	#         01: Rx clock before output buffer,
+	#         10: Automatic selection based on working mode.
+	#         11: Reserved
+	# [14:8] steps of delay for Auto Tuning Mode, each 125ps, range: 0 - 39.
+	# [6:0] steps of delay for HS200, each 125ps, range: 0 - 79.
+	register "common_soc_config.emmc_dll.emmc_rx_cmd_data_cntl2" = "0x1004E"
+
+	# EMMC Rx Strobe Delay
+	# Refer to EDS-Vol2-42.3.11.
+	# [14:8] Rx Strobe Delay DLL 1(HS400 Mode), each 125ps, range: 0 - 39.
+	# [6:0] Rx Strobe Delay DLL 2(HS400 Mode), each 125ps, range: 0 - 39.
+	register "common_soc_config.emmc_dll.emmc_rx_strobe_cntl" = "0x01515"
+
 	# Bit 0 - C0 has no redriver, so enable SBU muxing in the SoC.
 	# Bit 2 - C1 has a redriver which does SBU muxing.
 	# Bit 1,3 - AUX lines are not swapped on the motherboard for either C0 or C1.