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-rw-r--r--src/southbridge/amd/pi/hudson/Kconfig6
-rw-r--r--src/southbridge/amd/pi/hudson/lpc.c7
2 files changed, 13 insertions, 0 deletions
diff --git a/src/southbridge/amd/pi/hudson/Kconfig b/src/southbridge/amd/pi/hudson/Kconfig
index bb58722a21..233260f026 100644
--- a/src/southbridge/amd/pi/hudson/Kconfig
+++ b/src/southbridge/amd/pi/hudson/Kconfig
@@ -213,6 +213,12 @@ config AMDFW_OUTSIDE_CBFS
option to manually attach the generated amdfw.rom at an
offset of 0x20000 from the bottom of the coreboot ROM image.
+config SERIRQ_CONTINUOUS_MODE
+ bool
+ default n
+ help
+ Set this option to y for serial IRQ in continuous mode.
+ Otherwise it is in quiet mode.
endif
config HUDSON_UART
diff --git a/src/southbridge/amd/pi/hudson/lpc.c b/src/southbridge/amd/pi/hudson/lpc.c
index 1dacfd0dbd..38c57331b2 100644
--- a/src/southbridge/amd/pi/hudson/lpc.c
+++ b/src/southbridge/amd/pi/hudson/lpc.c
@@ -83,6 +83,13 @@ static void lpc_init(device_t dev)
/* Initialize i8254 timers */
setup_i8254 ();
+
+ /* Setup SERIRQ, enable continuous mode */
+ byte = (BIT(4) | BIT(7));
+ if (!IS_ENABLED(CONFIG_SERIRQ_CONTINUOUS_MODE))
+ byte |= BIT(6);
+
+ pm_write8(PM_SERIRQ_CONF, byte);
}
static void hudson_lpc_read_resources(device_t dev)