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| author | Rudolf Marek <r.marek@assembler.cz> | 2014-05-13 15:57:47 +0200 |
|---|---|---|
| committer | Patrick Georgi <patrick@georgi-clan.de> | 2014-05-23 20:06:34 +0200 |
| commit | a7d14a170e9e36d4b8a0c73c112e5516f378c23a (patch) | |
| tree | cbf336c6e9c8b0570d48dc68a7df2d29396a4a57 /src | |
| parent | 4405b06521c186a8b026cb3bc95837a3b605dd30 (diff) | |
| download | coreboot-a7d14a170e9e36d4b8a0c73c112e5516f378c23a.tar.xz | |
ite/common: Introduce common watchdog and 3.3V VSB helpers
Introduce the watchog and 3.3 VSB helper functions.
The IT8712F can be migrated to use those too. To be used
with IT8728F.
Change-Id: If21e99b6069c7222f0bc8eb7c7121fe119b8dfe1
Signed-off-by: Rudolf Marek <r.marek@assembler.cz>
Reviewed-on: http://review.coreboot.org/5728
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Tested-by: build bot (Jenkins)
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Diffstat (limited to 'src')
| -rw-r--r-- | src/superio/ite/common/early_serial.c | 40 | ||||
| -rw-r--r-- | src/superio/ite/common/ite.h | 2 |
2 files changed, 42 insertions, 0 deletions
diff --git a/src/superio/ite/common/early_serial.c b/src/superio/ite/common/early_serial.c index 35fb59d64a..73354d458c 100644 --- a/src/superio/ite/common/early_serial.c +++ b/src/superio/ite/common/early_serial.c @@ -29,6 +29,8 @@ #define ITE_CONFIG_REG_LDN 0x07 /* Logical Device Number. */ #define ITE_CONFIG_REG_CLOCKSEL 0x23 /* Clock Selection. */ #define ITE_CONFIG_REG_SWSUSP 0x24 /* Software Suspend, Flash I/F. */ +#define ITE_CONFIG_REG_MFC 0x2a /* multi function pin */ +#define ITE_CONFIG_REG_WATCHDOG 0x72 /* watchdog config */ /* Helper procedure */ static void ite_sio_write(device_t dev, u8 reg, u8 value) @@ -84,3 +86,41 @@ void ite_enable_serial(device_t dev, u16 iobase) pnp_set_enable(dev, 1); pnp_exit_conf_state(dev); } + +/* + * + * LDN 7, reg 0x2a - needed for S3, or memory power will be cut off + * this was documented only in IT8712F_V0.9.2! + * + * Enable 3VSBSW#. (For System Suspend-to-RAM) + * 0: 3VSBSW# will be always inactive. + * 1: 3VSBSW# enabled. It will be (NOT SUSB#) NAND SUSC#. + * + * in romstage.c + * #define GPIO_DEV PNP_DEV(0x2e, ITE_GPIO) + * and pass: GPIO_DEV + */ + +void ite_enable_3vsbsw(device_t dev) +{ + u8 tmp; + pnp_enter_conf_state(dev); + pnp_set_logical_device(dev); + tmp = pnp_read_config(dev, ITE_CONFIG_REG_MFC); + tmp |= 0x80; + pnp_write_config(dev, ITE_CONFIG_REG_MFC, tmp); + pnp_exit_conf_state(dev); +} + +/* + * in romstage.c + * #define GPIO_DEV PNP_DEV(0x2e, ITE_GPIO) + * and pass: GPIO_DEV +*/ + +void ite_kill_watchdog(device_t dev) +{ + pnp_enter_conf_state(dev); + ite_sio_write(dev, ITE_CONFIG_REG_WATCHDOG, 0x00); + pnp_exit_conf_state(dev); +} diff --git a/src/superio/ite/common/ite.h b/src/superio/ite/common/ite.h index f21381de6f..5389f1416c 100644 --- a/src/superio/ite/common/ite.h +++ b/src/superio/ite/common/ite.h @@ -32,5 +32,7 @@ void ite_enable_serial(device_t dev, u16 iobase); /* Some boards need to init wdt+gpio's very early */ void ite_reg_write(device_t dev, u8 reg, u8 value); +void ite_enable_3vsbsw(device_t dev); +void ite_kill_watchdog(device_t dev); #endif /* SUPERIO_ITE_COMMON_ROMSTAGE_H */ |