diff options
| author | Naresh G Solanki <naresh.solanki@intel.com> | 2016-11-09 18:53:53 +0530 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2016-11-10 20:11:40 +0100 |
| commit | 5a08fb2203125b719eeb14852f12aeba50798df4 (patch) | |
| tree | 8d25d668b54e2b367c7e88bf4de82f5f1a5d8d26 /src/mainboard/intel/kblrvp | |
| parent | 2db5bacd909dbf2d9e9e1e8998b0855ba424145c (diff) | |
| download | coreboot-5a08fb2203125b719eeb14852f12aeba50798df4.tar.xz | |
intel/kblrvp: Program I/O expander
Program I/O expander connected on I2C bus 4
Change-Id: I1a431f50e7b06446399a7d7cb9490615818147e7
Signed-off-by: Naresh G Solanki <naresh.solanki@intel.com>
Reviewed-on: https://review.coreboot.org/17338
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Martin Roth <martinroth@google.com>
Diffstat (limited to 'src/mainboard/intel/kblrvp')
| -rw-r--r-- | src/mainboard/intel/kblrvp/gpio.h | 11 | ||||
| -rw-r--r-- | src/mainboard/intel/kblrvp/ramstage.c | 45 |
2 files changed, 53 insertions, 3 deletions
diff --git a/src/mainboard/intel/kblrvp/gpio.h b/src/mainboard/intel/kblrvp/gpio.h index 5e251d846c..01897a1a01 100644 --- a/src/mainboard/intel/kblrvp/gpio.h +++ b/src/mainboard/intel/kblrvp/gpio.h @@ -20,6 +20,17 @@ #include <soc/gpe.h> #include <soc/gpio.h> +/* TCA6424A I/O Expander */ +#define IO_EXPANDER_BUS 4 +#define IO_EXPANDER_0_ADDR 0x22 +#define IO_EXPANDER_P0CONF 0x0C /* Port 0 conf offset */ +#define IO_EXPANDER_P0DOUT 0x04 /* Port 0 data offset */ +#define IO_EXPANDER_P1CONF 0x0D +#define IO_EXPANDER_P1DOUT 0x05 +#define IO_EXPANDER_P2CONF 0x0E +#define IO_EXPANDER_P2DOUT 0x06 +#define IO_EXPANDER_1_ADDR 0x23 + /* EC wake is LAN_WAKE# which is a special DeepSX wake pin */ #define GPE_EC_WAKE GPE0_LAN_WAK diff --git a/src/mainboard/intel/kblrvp/ramstage.c b/src/mainboard/intel/kblrvp/ramstage.c index 6a509b7b6d..d33c967939 100644 --- a/src/mainboard/intel/kblrvp/ramstage.c +++ b/src/mainboard/intel/kblrvp/ramstage.c @@ -13,20 +13,23 @@ * GNU General Public License for more details. */ +#include <bootstate.h> +#include <console/console.h> +#include <device/i2c.h> #include <soc/ramstage.h> #include "gpio.h" void mainboard_silicon_init_params(FSP_SIL_UPD *params) { - u8 i; + size_t i; /* Configure pads prior to SiliconInit() in case there's any * dependencies during hardware initialization. */ gpio_configure_pads(gpio_table, ARRAY_SIZE(gpio_table)); params->CdClock = 3; /* Set proper OC for various USB ports*/ - u8 usb2_oc[] = { 0x0, 0x2, 0x8, 0x8, 0x2, 0x8, 0x8, 0x8, 0x1, 0x8}; - u8 usb3_oc[] = { 0x0, 0x8, 0x8, 0x1, 0x8, 0x8 }; + u8 usb2_oc[] = {0x0, 0x2, 0x8, 0x8, 0x2, 0x8, 0x8, 0x8, 0x1, 0x8}; + u8 usb3_oc[] = {0x0, 0x8, 0x8, 0x1, 0x8, 0x8}; for (i = 0; i < ARRAY_SIZE(usb2_oc); i++) params->Usb2OverCurrentPin[i] = usb2_oc[i]; @@ -34,3 +37,39 @@ void mainboard_silicon_init_params(FSP_SIL_UPD *params) for (i = 0; i < ARRAY_SIZE(usb3_oc); i++) params->Usb3OverCurrentPin[i] = usb3_oc[i]; } + +static void ioexpander_init(void *unused) +{ + printk(BIOS_DEBUG, "Programming TCA6424A I/O expander\n"); + + /* I/O Expander 1, Port 0 Data */ + i2c_writeb(IO_EXPANDER_BUS, IO_EXPANDER_0_ADDR, IO_EXPANDER_P0DOUT, + 0xF7); + /* Port 0 Configuration */ + i2c_writeb(IO_EXPANDER_BUS, IO_EXPANDER_0_ADDR, IO_EXPANDER_P0CONF, + 0xE0); + + /* Port 1 Data */ + i2c_writeb(IO_EXPANDER_BUS, IO_EXPANDER_0_ADDR, IO_EXPANDER_P1DOUT, + 0x9E); + /* Port 1 Configuration */ + i2c_writeb(IO_EXPANDER_BUS, IO_EXPANDER_0_ADDR, IO_EXPANDER_P1CONF, + 0x8C); + + /* Port 2 Data */ + i2c_writeb(IO_EXPANDER_BUS, IO_EXPANDER_0_ADDR, IO_EXPANDER_P2DOUT, + 0xDA); + /* Port 2 Configuration */ + i2c_writeb(IO_EXPANDER_BUS, IO_EXPANDER_0_ADDR, IO_EXPANDER_P2CONF, + 0x08); + + /* I/O Expander 2, Port 0 Data */ + i2c_writeb(IO_EXPANDER_BUS, IO_EXPANDER_1_ADDR, IO_EXPANDER_P0DOUT, + 0xFF); + /* Port 0 Configuration */ + i2c_writeb(IO_EXPANDER_BUS, IO_EXPANDER_1_ADDR, IO_EXPANDER_P0CONF, + 0x00); + +} + +BOOT_STATE_INIT_ENTRY(BS_POST_DEVICE, BS_ON_EXIT, ioexpander_init, NULL); |