Felix Held has submitted this change. ( https://review.coreboot.org/c/coreboot/+/78851?usp=email )
Change subject: mb/google/nissa/var/anraggar: Tune eMMC DLL values ......................................................................
mb/google/nissa/var/anraggar: Tune eMMC DLL values
Anraggar cannot boot into OS and kernel loading failure. Update eMMC DLL values to improve initialization reliability
- Sending different speed TX/RX command/data signal to eMMC and check the response is success or not. - Collecting every eMMC that use for the project - Based on above result to provide a fine tune DLL values
BUG=b:308366637 TEST=Cold reboot stress test over 2500 cycles
Change-Id: I9ec3cc23000301aa72aed96e74b63114623c4fc2 Signed-off-by: Simon Yang simon1.yang@intel.com Reviewed-on: https://review.coreboot.org/c/coreboot/+/78851 Reviewed-by: Subrata Banik subratabanik@google.com Tested-by: build bot (Jenkins) no-reply@coreboot.org Reviewed-by: Eric Lai ericllai@google.com --- M src/mainboard/google/brya/variants/anraggar/overridetree.cb 1 file changed, 45 insertions(+), 0 deletions(-)
Approvals: build bot (Jenkins): Verified Subrata Banik: Looks good to me, approved Eric Lai: Looks good to me, approved
diff --git a/src/mainboard/google/brya/variants/anraggar/overridetree.cb b/src/mainboard/google/brya/variants/anraggar/overridetree.cb index e77b676..16da214 100644 --- a/src/mainboard/google/brya/variants/anraggar/overridetree.cb +++ b/src/mainboard/google/brya/variants/anraggar/overridetree.cb @@ -1,6 +1,51 @@ 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" = "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" = "0x10051" + + # 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" + # SOC Aux orientation override: # This is a bitfield that corresponds to up to 4 TCSS ports. # Bits (0,1) allocated for TCSS Port1 configuration and Bits (2,3)for TCSS Port2.