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-rw-r--r--src/mainboard/google/reef/Kconfig1
-rw-r--r--src/mainboard/google/reef/variants/sand/devicetree.cb227
2 files changed, 228 insertions, 0 deletions
diff --git a/src/mainboard/google/reef/Kconfig b/src/mainboard/google/reef/Kconfig
index 0243d5783c..2247f19247 100644
--- a/src/mainboard/google/reef/Kconfig
+++ b/src/mainboard/google/reef/Kconfig
@@ -57,6 +57,7 @@ config VARIANT_DIR
config DEVICETREE
string
default "variants/pyro/devicetree.cb" if BOARD_GOOGLE_PYRO
+ default "variants/sand/devicetree.cb" if BOARD_GOOGLE_SAND
default "variants/snappy/devicetree.cb" if BOARD_GOOGLE_SNAPPY
default "variants/baseboard/devicetree.cb"
diff --git a/src/mainboard/google/reef/variants/sand/devicetree.cb b/src/mainboard/google/reef/variants/sand/devicetree.cb
new file mode 100644
index 0000000000..b0c82e2be8
--- /dev/null
+++ b/src/mainboard/google/reef/variants/sand/devicetree.cb
@@ -0,0 +1,227 @@
+chip soc/intel/apollolake
+
+ device cpu_cluster 0 on
+ device lapic 0 on end
+ end
+
+ register "pcie_rp0_clkreq_pin" = "0" # wifi/bt
+ # Disable unused clkreq of PCIe root ports
+ register "pcie_rp1_clkreq_pin" = "CLKREQ_DISABLED"
+ register "pcie_rp2_clkreq_pin" = "CLKREQ_DISABLED"
+ register "pcie_rp3_clkreq_pin" = "CLKREQ_DISABLED"
+ register "pcie_rp4_clkreq_pin" = "CLKREQ_DISABLED"
+ register "pcie_rp5_clkreq_pin" = "CLKREQ_DISABLED"
+
+ # GPIO for PERST_0
+ # If the Board has PERST_0 signal, assign the GPIO
+ # If the Board does not have PERST_0, assign GPIO_PRT0_UDEF
+ register "prt0_gpio" = "GPIO_122"
+
+ # EMMC TX DATA Delay 1
+ # Refer to EDS-Vol2-22.3.
+ # [14:8] steps of delay for HS400, each 125ps.
+ # [6:0] steps of delay for SDR104/HS200, each 125ps.
+ register "emmc_tx_data_cntl1" = "0x0C16"
+
+ # EMMC TX DATA Delay 2
+ # Refer to EDS-Vol2-22.3.
+ # [30:24] steps of delay for SDR50, each 125ps.
+ # [22:16] steps of delay for DDR50, each 125ps.
+ # [14:8] steps of delay for SDR25/HS50, each 125ps.
+ # [6:0] steps of delay for SDR12, each 125ps.
+ register "emmc_tx_data_cntl2" = "0x28162828"
+
+ # EMMC RX CMD/DATA Delay 1
+ # Refer to EDS-Vol2-22.3.
+ # [30:24] steps of delay for SDR50, each 125ps.
+ # [22:16] steps of delay for DDR50, each 125ps.
+ # [14:8] steps of delay for SDR25/HS50, each 125ps.
+ # [6:0] steps of delay for SDR12, each 125ps.
+ register "emmc_rx_cmd_data_cntl1" = "0x00181717"
+
+ # EMMC RX CMD/DATA Delay 2
+ # Refer to EDS-Vol2-22.3.
+ # [17:16] stands for Rx Clock before Output Buffer
+ # [14:8] steps of delay for Auto Tuning Mode, each 125ps.
+ # [6:0] steps of delay for HS200, each 125ps.
+ register "emmc_rx_cmd_data_cntl2" = "0x10008"
+
+ # Enable DPTF
+ register "dptf_enable" = "1"
+
+ # PL1 override 12000 mW: the energy calculation is wrong with the
+ # current VR solution. Experiments show that SoC TDP max (6W) can
+ # be reached when RAPL PL1 is set to 12W.
+ register "tdp_pl1_override_mw" = "12000"
+ # Set RAPL PL2 to 15W.
+ register "tdp_pl2_override_mw" = "15000"
+
+ # Enable Audio Clock and Power gating
+ register "hdaudio_clk_gate_enable" = "1"
+ register "hdaudio_pwr_gate_enable" = "1"
+ register "hdaudio_bios_config_lockdown" = "1"
+
+ # Enable lpss s0ix
+ register "lpss_s0ix_enable" = "1"
+
+ # GPE configuration
+ # Note that GPE events called out in ASL code rely on this
+ # route, i.e., if this route changes then the affected GPE
+ # offset bits also need to be changed. This sets the PMC register
+ # GPE_CFG fields.
+ register "gpe0_dw1" = "PMC_GPE_N_31_0"
+ register "gpe0_dw2" = "PMC_GPE_N_63_32"
+ register "gpe0_dw3" = "PMC_GPE_SW_31_0"
+
+ # Enable I2C0 for audio codec at 400kHz
+ register "i2c[0]" = "{
+ .speed = I2C_SPEED_FAST,
+ .rise_time_ns = 104,
+ .fall_time_ns = 52,
+ }"
+
+ # Enable I2C2 bus early for TPM at 400kHz
+ register "i2c[2]" = "{
+ .early_init = 1,
+ .speed = I2C_SPEED_FAST,
+ .rise_time_ns = 57,
+ .fall_time_ns = 28,
+ }"
+
+ # touchscreen at 400kHz
+ register "i2c[3]" = "{
+ .speed = I2C_SPEED_FAST,
+ .rise_time_ns = 76,
+ .fall_time_ns = 164,
+ }"
+
+ # trackpad at 400kHz
+ register "i2c[4]" = "{
+ .speed = I2C_SPEED_FAST,
+ .rise_time_ns = 114,
+ .fall_time_ns = 164,
+ }"
+
+ # digitizer at 400kHz
+ register "i2c[5]" = "{
+ .speed = I2C_SPEED_FAST,
+ .rise_time_ns = 152,
+ .fall_time_ns = 30,
+ }"
+
+ # Minimum SLP S3 assertion width 28ms.
+ register "slp_s3_assertion_width_usecs" = "28000"
+
+ device domain 0 on
+ device pci 00.0 on end # - Host Bridge
+ device pci 00.1 on end # - DPTF
+ device pci 00.2 on end # - NPK
+ device pci 02.0 on end # - Gen
+ device pci 03.0 on end # - Iunit
+ device pci 0d.0 on end # - P2SB
+ device pci 0d.1 on end # - PMC
+ device pci 0d.2 on end # - SPI
+ device pci 0d.3 on end # - Shared SRAM
+ device pci 0e.0 on # - Audio
+ chip drivers/generic/max98357a
+ register "sdmode_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPIO_76)"
+ register "sdmode_delay" = "5"
+ device generic 0 on end
+ end
+ end
+ device pci 11.0 off end # - ISH
+ device pci 12.0 off end # - SATA
+ device pci 13.0 off end # - Root Port 2 - PCIe-A 0
+ device pci 13.1 off end # - Root Port 3 - PCIe-A 1
+ device pci 13.2 off end # - Root Port 4 - PCIe-A 2
+ device pci 13.3 off end # - Root Port 5 - PCIe-A 3
+ device pci 14.0 on
+ chip drivers/intel/wifi
+ register "wake" = "GPE0_DW3_00"
+ device pci 00.0 on end
+ end
+ end # - Root Port 0 - PCIe-B 0 - Wifi
+ device pci 14.1 off end # - Root Port 1 - PCIe-B 1
+ device pci 15.0 on end # - XHCI
+ device pci 15.1 off end # - XDCI
+ device pci 16.0 on # - I2C 0
+ chip drivers/i2c/da7219
+ register "irq" = "ACPI_IRQ_LEVEL_LOW(GPIO_116_IRQ)"
+ register "btn_cfg" = "50"
+ register "mic_det_thr" = "500"
+ register "jack_ins_deb" = "20"
+ register "jack_det_rate" = ""32ms_64ms""
+ register "jack_rem_deb" = "1"
+ register "a_d_btn_thr" = "0xa"
+ register "d_b_btn_thr" = "0x16"
+ register "b_c_btn_thr" = "0x21"
+ register "c_mic_btn_thr" = "0x3e"
+ register "btn_avg" = "4"
+ register "adc_1bit_rpt" = "1"
+ register "micbias_lvl" = "2600"
+ register "mic_amp_in_sel" = ""diff""
+ device i2c 1a on end
+ end
+ end
+ device pci 16.1 on end # - I2C 1
+ device pci 16.2 on
+ chip drivers/i2c/tpm
+ register "hid" = ""GOOG0005""
+ register "irq" = "ACPI_IRQ_EDGE_LOW(GPIO_28_IRQ)"
+ device i2c 50 on end
+ end
+ end # - I2C 2
+ device pci 16.3 on
+ chip drivers/i2c/generic
+ register "hid" = ""ELAN0001""
+ register "desc" = ""ELAN Touchscreen""
+ register "irq" = "ACPI_IRQ_EDGE_LOW(GPIO_21_IRQ)"
+ register "probed" = "1"
+ register "reset_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPIO_36)"
+ register "reset_delay_ms" = "20"
+ register "enable_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPIO_152)"
+ register "enable_delay_ms" = "1"
+ register "has_power_resource" = "1"
+ device i2c 10 on end
+ end
+ end # - I2C 3
+ device pci 17.0 on
+ chip drivers/i2c/generic
+ register "hid" = ""ELAN0000""
+ register "desc" = ""ELAN Touchpad""
+ register "irq" = "ACPI_IRQ_EDGE_LOW(GPIO_18_IRQ)"
+ register "wake" = "GPE0_DW1_15"
+ register "probed" = "1"
+ device i2c 15 on end
+ end
+ end # - I2C 4
+ device pci 17.1 on
+ chip drivers/i2c/hid
+ register "generic.hid" = ""WCOM50C1""
+ register "generic.desc" = ""WCOM Digitizer""
+ register "generic.irq" = "ACPI_IRQ_LEVEL_LOW(GPIO_13_IRQ)"
+ register "hid_desc_reg_offset" = "0x1"
+ device i2c 0x9 on end
+ end
+ end # - I2C 5
+ device pci 17.2 off end # - I2C 6
+ device pci 17.3 off end # - I2C 7
+ device pci 18.0 on end # - UART 0
+ device pci 18.1 on end # - UART 1
+ device pci 18.2 on end # - UART 2
+ device pci 18.3 off end # - UART 3
+ device pci 19.0 on end # - SPI 0
+ device pci 19.1 off end # - SPI 1
+ device pci 19.2 off end # - SPI 2
+ device pci 1a.0 on end # - PWM
+ device pci 1b.0 on end # - SDCARD
+ device pci 1c.0 on end # - eMMC
+ device pci 1e.0 off end # - SDIO
+ device pci 1f.0 on # - LPC
+ chip ec/google/chromeec
+ device pnp 0c09.0 on end
+ end
+ end
+ device pci 1f.1 on end # - SMBUS
+ end
+end