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authorIdwer Vollering <vidwer@gmail.com>2011-11-07 17:48:33 +0100
committerStefan Reinauer <stefan.reinauer@coreboot.org>2011-11-07 22:12:12 +0100
commit355092b7b843e081cf7d9f7dce488ad9ed85cbcf (patch)
tree5dec21dd58e1e23b9ebee2d993d7be7b602054fd
parent3d1d6bb4ecb15a12f48f871c623882bee9c0c576 (diff)
Add code to set the clock speed for Winbond W83627THF/THG.
Change-Id: I984404dd1df50b3ba423ac610283b9bf8bca5a31 Signed-off-by: Idwer Vollering <vidwer@gmail.com> Reviewed-on: http://review.coreboot.org/412 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
-rw-r--r--src/superio/winbond/w83627thg/early_serial.c11
-rw-r--r--src/superio/winbond/w83627thg/w83627thg.h2
2 files changed, 13 insertions, 0 deletions
diff --git a/src/superio/winbond/w83627thg/early_serial.c b/src/superio/winbond/w83627thg/early_serial.c
index 559e9827fc..b80e514097 100644
--- a/src/superio/winbond/w83627thg/early_serial.c
+++ b/src/superio/winbond/w83627thg/early_serial.c
@@ -45,3 +45,14 @@ static void inline w83627thg_enable_serial(device_t dev, u16 iobase)
pnp_set_enable(dev, 1);
pnp_exit_ext_func_mode(dev);
}
+
+#ifndef __ROMCC__
+void w83627thg_set_clksel_48(device_t dev) {
+ u8 reg8;
+ pnp_enter_ext_func_mode(dev);
+ reg8 = pnp_read_config(dev, 0x24);
+ reg8 |= (1 << 6); /* Set CLKSEL (clock input on pin 1) to 48MHz. */
+ pnp_write_config(dev, 0x24, reg8);
+ pnp_exit_ext_func_mode(dev);
+}
+#endif
diff --git a/src/superio/winbond/w83627thg/w83627thg.h b/src/superio/winbond/w83627thg/w83627thg.h
index 73be544889..99ff565593 100644
--- a/src/superio/winbond/w83627thg/w83627thg.h
+++ b/src/superio/winbond/w83627thg/w83627thg.h
@@ -34,4 +34,6 @@
#define W83627THG_ACPI 10
#define W83627THG_HWM 11 /* Hardware monitor */
+void w83627thg_set_clksel_48(device_t dev);
+
#endif