mainboard/google/puff: enable emmc

enable eMMC in puff/overridetree.cb

BRANCH=none
BUG=b:146455177
TEST=./util/abuild/abuild -p none -t google/hatch -x -a

Change-Id: I432f437e0c9a618bbbf76d22976ea757c8fbdb83
Signed-off-by: Kangheui Won <khwon@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/37817
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Edward O'Callaghan <quasisec@chromium.org>

src/mainboard/google/hatch/variants/puff/overridetree.cb

@@ -15,6 +15,54 @@ chip soc/intel/cannonlake
 		[PchSerialIoIndexUART2] = PchSerialIoDisabled,
 	}"
 
+	# Enable eMMC HS400
+	register "ScsEmmcHs400Enabled" = "1"
+
+	# EMMC Tx CMD Delay
+	# Refer to EDS-Vol2-14.3.7.
+	# [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-Vol2-14.3.8.
+	# [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" = "0x911"
+
+	# EMMC TX DATA Delay 2
+	# Refer to EDS-Vol2-14.3.9.
+	# [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" = "0x1C262828"
+
+	# EMMC RX CMD/DATA Delay 1
+	# Refer to EDS-Vol2-14.3.10.
+	# [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" = "0x1C16583b"
+
+	# EMMC RX CMD/DATA Delay 2
+	# Refer to EDS-Vol2-14.3.12.
+	# [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" = "0x1001D"
+
+	# EMMC Rx Strobe Delay
+	# Refer to EDS-Vol2-14.3.11.
+	# [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" = "0x1515"
+
 	# Intel Common SoC Config
 	#+-------------------+---------------------------+
 	#| Field             |  Value                    |
@@ -94,6 +142,7 @@ chip soc/intel/cannonlake
 				device i2c 1a on end
 			end
 		end #I2C #4
+		device pci 1a.0 on  end # eMMC
 		device pci 1e.3 off end # GSPI #1
 	end