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We should separate the it8718f_24mhz_clkin like the way IT8712 does. 

Signed-off-by: Zheng Bao <zheng.bao@amd.com>
Acked-by; Ronald G. Minnich <rminnich@gmail.com>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>



git-svn-id: svn://svn.coreboot.org/coreboot/trunk@4267 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Zheng Bao 2009-05-11 13:45:11 +00:00 committed by Uwe Hermann
parent dcda7fd527
commit 7c29dada3e
1 changed files with 27 additions and 8 deletions
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35
src/superio/ite/it8718f/it8718f_early_serial.c
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@ -45,10 +45,9 @@ static void it8718f_sio_write(uint8_t ldn, uint8_t index, uint8_t value)
outb(value, SIO_DATA);
}
/* Enable the peripheral devices on the IT8718F Super I/O chip. */
static void it8718f_enable_serial(device_t dev, unsigned iobase)
static void it8718f_enter_conf(void)
{
/* (1) Enter the configuration state (MB PnP mode). */
/* Enter the configuration state (MB PnP mode). */
/* Perform MB PnP setup to put the SIO chip at 0x2e. */
/* Base address 0x2e: 0x87 0x01 0x55 0x55. */
@ -57,6 +56,29 @@ static void it8718f_enable_serial(device_t dev, unsigned iobase)
outb(0x01, IT8718F_CONFIGURATION_PORT);
outb(0x55, IT8718F_CONFIGURATION_PORT);
outb(0x55, IT8718F_CONFIGURATION_PORT);
}
static void it8718f_exit_conf(void)
{
/* Exit the configuration state (MB PnP mode). */
it8718f_sio_write(0x00, IT8718F_CONFIG_REG_CC, 0x02);
}
static void it8718f_24mhz_clkin(void)
{
it8718f_enter_conf();
/* Select 24MHz CLKIN (48MHZ default)*/
it8718f_sio_write(0x00, IT8718F_CONFIG_REG_CLOCKSEL, 0x1);
it8718f_exit_conf();
}
/* Enable the peripheral devices on the IT8718F Super I/O chip. */
static void it8718f_enable_serial(device_t dev, unsigned iobase)
{
/* (1) Enter the configuration state (MB PnP mode). */
it8718f_enter_conf();
/* (2) Modify the data of configuration registers. */
@ -65,17 +87,14 @@ static void it8718f_enable_serial(device_t dev, unsigned iobase)
If this register is not written, both chips are configured. */
/* it8718f_sio_write(0x00, IT8718F_CONFIG_REG_CONFIGSEL, 0x00); */
/* Enable all devices. */
/* Enable serial port(s). */
it8718f_sio_write(IT8718F_SP1, 0x30, 0x1); /* Serial port 1 */
it8718f_sio_write(IT8718F_SP2, 0x30, 0x1); /* Serial port 2 */
/* Select 24MHz CLKIN (set bit 0). */
it8718f_sio_write(0x00, IT8718F_CONFIG_REG_CLOCKSEL, 0x01);
/* Clear software suspend mode (clear bit 0). TODO: Needed? */
/* it8718f_sio_write(0x00, IT8718F_CONFIG_REG_SWSUSP, 0x00); */
/* (3) Exit the configuration state (MB PnP mode). */
it8718f_sio_write(0x00, IT8718F_CONFIG_REG_CC, 0x02);
it8718f_exit_conf();
}