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-rw-r--r--src/superio/winbond/w83627hf/w83627hf_early_serial.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/src/superio/winbond/w83627hf/w83627hf_early_serial.c b/src/superio/winbond/w83627hf/w83627hf_early_serial.c
index cc0bf1cfe4..e4b49d1eee 100644
--- a/src/superio/winbond/w83627hf/w83627hf_early_serial.c
+++ b/src/superio/winbond/w83627hf/w83627hf_early_serial.c
@@ -45,3 +45,13 @@ static void w83627hf_enable_serial(device_t dev, unsigned iobase)
pnp_set_enable(dev, 1);
pnp_exit_ext_func_mode(dev);
}
+
+static void w83627hf_set_clksel_48(device_t dev)
+{
+ unsigned port = dev >> 8;
+ pnp_enter_ext_func_mode(dev);
+ outb(0x24, port);
+ /* Set CLKSEL (clock input on pin 1) to 48MHz. */
+ outb(inb(port + 1) | (1 << 6), port + 1);
+ pnp_exit_ext_func_mode(dev);
+}