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-rw-r--r--src/mainboard/google/guybrush/Kconfig1
-rw-r--r--src/mainboard/google/guybrush/variants/baseboard/devicetree.cb38
2 files changed, 39 insertions, 0 deletions
diff --git a/src/mainboard/google/guybrush/Kconfig b/src/mainboard/google/guybrush/Kconfig
index 46e8a5ab32..4884cf18d1 100644
--- a/src/mainboard/google/guybrush/Kconfig
+++ b/src/mainboard/google/guybrush/Kconfig
@@ -11,6 +11,7 @@ config BOARD_SPECIFIC_OPTIONS
select BOARD_ROMSIZE_KB_16384
select MAINBOARD_HAS_CHROMEOS
select SOC_AMD_CEZANNE
+ select SOC_AMD_COMMON_BLOCK_USE_ESPI
config CHROMEOS
select EC_GOOGLE_CHROMEEC
diff --git a/src/mainboard/google/guybrush/variants/baseboard/devicetree.cb b/src/mainboard/google/guybrush/variants/baseboard/devicetree.cb
index 519bd07fab..cacc8d2665 100644
--- a/src/mainboard/google/guybrush/variants/baseboard/devicetree.cb
+++ b/src/mainboard/google/guybrush/variants/baseboard/devicetree.cb
@@ -1,5 +1,43 @@
# SPDX-License-Identifier: GPL-2.0-or-later
chip soc/amd/cezanne
+
+ # eSPI Configuration
+ register "common_config.espi_config" = "{
+ .std_io_decode_bitmap = ESPI_DECODE_IO_0x80_EN | ESPI_DECODE_IO_0X60_0X64_EN,
+ .generic_io_range[0] = {
+ .base = 0x62,
+ /*
+ * Only 0x62 and 0x66 are required. But, this is not supported by
+ * standard IO decodes and there are only 4 generic I/O windows
+ * available. Hence, open a window from 0x62-0x67.
+ */
+ .size = 5,
+ },
+ .generic_io_range[1] = {
+ .base = 0x800, /* EC_HOST_CMD_REGION0 */
+ .size = 256, /* EC_HOST_CMD_REGION_SIZE * 2 */
+ },
+ .generic_io_range[2] = {
+ .base = 0x900, /* EC_LPC_ADDR_MEMMAP */
+ .size = 255, /* EC_MEMMAP_SIZE */
+ },
+ .generic_io_range[3] = {
+ .base = 0x200, /* EC_LPC_ADDR_HOST_DATA */
+ .size = 8, /* 0x200 - 0x207 */
+ },
+
+ .io_mode = ESPI_IO_MODE_QUAD,
+ .op_freq_mhz = ESPI_OP_FREQ_33_MHZ,
+ .crc_check_enable = 1,
+ .dedicated_alert_pin = 1,
+ .periph_ch_en = 1,
+ .vw_ch_en = 1,
+ .oob_ch_en = 0,
+ .flash_ch_en = 0,
+
+ .vw_irq_polarity = ESPI_VW_IRQ_LEVEL_HIGH(1) | ESPI_VW_IRQ_LEVEL_HIGH(12),
+ }"
+
device domain 0 on
end # domain
end # chip soc/amd/cezanne