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mb/google/octopus: Close unused I2C bus 7 include SCL and SDA for Phaser 

Since I2C bus 7 attached the touchscreen device however Phaser units
that haven't it. So for avoiding side effects, we need close I2C bus
7 SCL and SDA respectively.

BUG=none
TEST=according to sku_id (Phaser: 0x1, Phaser360: 0x2, Phaser360s: 0x3)
distinguish whether close these gpios.

Change-Id: I8ad17761f2a053dc329bbec0a0a3284d47289666
Signed-off-by: Peichao.Wang <peichao.wang@bitland.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/28669
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Jett Rink <jettrink@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Peichao Wang 2018-09-19 10:55:12 +08:00 committed by Furquan Shaikh
parent 1f42a38e0f
commit cfab6f69b6
2 changed files with 52 additions and 3 deletions
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41
src/mainboard/google/octopus/variants/phaser/gpio.c
View File

@ -18,6 +18,10 @@
#include <boardid.h>
#include <gpio.h>
#include <soc/gpio.h>
#include <ec/google/chromeec/ec.h>
#include <console/console.h>
#define SKU_UNKNOWN 0xFFFFFFFF
static const struct pad_config default_override_table[] = {
PAD_NC(GPIO_52, UP_20K),
@ -39,6 +43,31 @@ static const struct pad_config default_override_table[] = {
PAD_NC(GPIO_214, DN_20K),
};
static const struct pad_config sku1_default_override_table[] = {
/* disable I2C7 SCL and SDA */
PAD_NC(GPIO_114, UP_20K), /* LPSS_I2C7_SDA */
PAD_NC(GPIO_115, UP_20K), /* LPSS_I2C7_SCL */
PAD_NC(GPIO_52, UP_20K),
PAD_NC(GPIO_53, UP_20K),
PAD_NC(GPIO_67, UP_20K),
PAD_NC(GPIO_117, UP_20K),
PAD_NC(GPIO_143, UP_20K),
/* EN_PP3300_TOUCHSCREEN */
PAD_CFG_GPO_IOSSTATE_IOSTERM(GPIO_146, 0, DEEP, NONE, Tx0RxDCRx0,
DISPUPD),
PAD_NC(GPIO_161, DN_20K),
/* EN_PP3300_WLAN_L */
PAD_CFG_GPO_IOSSTATE_IOSTERM(GPIO_178, 0, DEEP, NONE, Tx0RxDCRx0,
DISPUPD),
PAD_NC(GPIO_213, DN_20K),
PAD_NC(GPIO_214, DN_20K),
};
static const struct pad_config bid0_override_table[] = {
PAD_NC(GPIO_52, UP_20K),
PAD_NC(GPIO_53, UP_20K),
@ -52,6 +81,7 @@ static const struct pad_config bid0_override_table[] = {
const struct pad_config *variant_override_gpio_table(size_t *num)
{
const struct pad_config *c;
uint32_t sku_id = SKU_UNKNOWN;
switch (board_id()) {
case 0:
@ -60,10 +90,15 @@ const struct pad_config *variant_override_gpio_table(size_t *num)
*num = ARRAY_SIZE(bid0_override_table);
break;
default:
c = default_override_table;
*num = ARRAY_SIZE(default_override_table);
google_chromeec_cbi_get_sku_id(&sku_id);
if (sku_id == 1) {
c = sku1_default_override_table;
*num = ARRAY_SIZE(sku1_default_override_table);
} else {
c = default_override_table;
*num = ARRAY_SIZE(default_override_table);
}
}
return c;
}

14
src/mainboard/google/octopus/variants/phaser/variant.c
View File

@ -22,6 +22,9 @@
#include <soc/gpio.h>
#include <soc/pci_devs.h>
#include <string.h>
#include <ec/google/chromeec/ec.h>
#define SKU_UNKNOWN 0xFFFFFFFF
extern struct chip_operations drivers_i2c_generic_ops;
extern struct chip_operations drivers_i2c_hid_ops;
@ -29,6 +32,7 @@ extern struct chip_operations drivers_i2c_hid_ops;
void variant_update_devtree(struct device *dev)
{
uint32_t bid;
uint32_t sku_id = SKU_UNKNOWN;
struct device *touchscreen_i2c_host;
struct device *child;
const struct bus *children_bus;
@ -46,6 +50,16 @@ void variant_update_devtree(struct device *dev)
if (touchscreen_i2c_host == NULL)
return;
/* According to the sku id decide whether update touch
* screen device information:
* 1. sku id is 1 then dev->enabled = 0.
*/
google_chromeec_cbi_get_sku_id(&sku_id);
if (sku_id == 1) {
touchscreen_i2c_host->enabled = 0;
return;
}
children_bus = touchscreen_i2c_host->link_list;
child = NULL;