mb/google/nissa/var/yavilla: Update eMMC DLL settings
Update eMMC DLL settings to prevent eMMC initialization error
BUG=b:290567342
TEST=warm/cold reboot stress test 2500 times pass
Change-Id: I418836ec3e2d2221c219eae35e2b22aeaacce4a5
Signed-off-by: Tony Huang <tony-huang@quanta.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/76823
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Jamie Chen <jamie.chen@intel.com>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Reviewed-by: Derek Huang <derekhuang@google.com>
diff --git a/src/mainboard/google/brya/variants/yavilla/overridetree.cb b/src/mainboard/google/brya/variants/yavilla/overridetree.cb
index 12a26c2..3077e18 100644
--- a/src/mainboard/google/brya/variants/yavilla/overridetree.cb
+++ b/src/mainboard/google/brya/variants/yavilla/overridetree.cb
@@ -42,6 +42,51 @@
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" = "0x1C272828"
+
+ # 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" = "0x1C171733"
+
+ # 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" = "0x10024"
+
+ # 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" = "0x1414"
+
# 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.