diff options
| -rw-r--r-- | src/soc/amd/common/block/lpc/espi_util.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/src/soc/amd/common/block/lpc/espi_util.c b/src/soc/amd/common/block/lpc/espi_util.c index e6ae2cb505..b724408022 100644 --- a/src/soc/amd/common/block/lpc/espi_util.c +++ b/src/soc/amd/common/block/lpc/espi_util.c @@ -563,7 +563,7 @@ static int espi_send_reset(void) return espi_send_command(&cmd); } -static int espi_send_pltrst_deassert(const struct espi_config *mb_cfg) +static int espi_send_pltrst(const struct espi_config *mb_cfg, bool assert) { struct espi_cmd cmd = { .hdr0 = { @@ -573,7 +573,8 @@ static int espi_send_pltrst_deassert(const struct espi_config *mb_cfg) }, .data = { .byte0 = ESPI_VW_INDEX_SYSTEM_EVENT_3, - .byte1 = ESPI_VW_SIGNAL_HIGH(ESPI_VW_PLTRST), + .byte1 = assert ? ESPI_VW_SIGNAL_LOW(ESPI_VW_PLTRST) + : ESPI_VW_SIGNAL_HIGH(ESPI_VW_PLTRST), }, }; @@ -1006,9 +1007,15 @@ int espi_setup(void) return -1; } + /* Assert PLTRST# if VW channel is enabled by mainboard. */ + if (espi_send_pltrst(cfg, true) == -1) { + printk(BIOS_ERR, "Error: PLTRST# assertion failed!\n"); + return -1; + } + /* De-assert PLTRST# if VW channel is enabled by mainboard. */ - if (espi_send_pltrst_deassert(cfg) == -1) { - printk(BIOS_ERR, "Error: PLTRST deassertion failed!\n"); + if (espi_send_pltrst(cfg, false) == -1) { + printk(BIOS_ERR, "Error: PLTRST# deassertion failed!\n"); return -1; } |