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mb/google/nissa/var/craask: Switch LTE-related GPIOs settings based on fw_config 

If the LTE USB DB is connected, enable LTE-related settings.
Otherwise, disable LTE-related settings.

BUG=b:229938024, b:229048361, b:229040345
TEST=emerge-nissa coreboot

Signed-off-by: Tyler Wang <tyler.wang@quanta.corp-partner.google.com>
Change-Id: I37719cee48370a04534067aa64a3aa77e453948a
Reviewed-on: https://review.coreboot.org/c/coreboot/+/63893
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Reka Norman <rekanorman@chromium.org>
Reviewed-by: Kangheui Won <khwon@chromium.org>
This commit is contained in:
Tyler Wang 2022-04-28 09:34:57 +08:00 committed by Felix Held
parent 03bdf47102
commit 10fb9c7f36
3 changed files with 52 additions and 0 deletions
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4
src/mainboard/google/brya/variants/craask/Makefile.inc
View File

@ -1,3 +1,7 @@
# SPDX-License-Identifier: GPL-2.0-only # SPDX-License-Identifier: GPL-2.0-only
bootblock-y += gpio.c bootblock-y += gpio.c
romstage-y += gpio.c romstage-y += gpio.c
ramstage-$(CONFIG_FW_CONFIG) += fw_config.c
ramstage-y += gpio.c

34
src/mainboard/google/brya/variants/craask/fw_config.c Normal file
View File

@ -0,0 +1,34 @@
/* SPDX-License-Identifier: GPL-2.0-or-later */
#include <baseboard/gpio.h>
#include <bootstate.h>
#include <console/console.h>
#include <fw_config.h>
static const struct pad_config lte_enable_pads[] = {
/* A8 : WWAN_RF_DISABLE_ODL */
PAD_CFG_GPO(GPP_A8, 1, DEEP),
/* H19 : SOC_I2C_SUB_INT_ODL */
PAD_CFG_GPI_APIC(GPP_H19, NONE, PLTRST, LEVEL, NONE),
/* H23 : WWAN_SAR_DETECT_ODL */
PAD_CFG_GPO(GPP_H23, 1, DEEP),
};
static const struct pad_config lte_disable_pads[] = {
/* D6 : WWAN_EN */
PAD_NC(GPP_D6, NONE),
/* F12 : WWAN_RST_L */
PAD_NC(GPP_F12, NONE),
};
static void fw_config_handle(void *unused)
{
if (fw_config_probe(FW_CONFIG(DB_USB, DB_1C_LTE))) {
printk(BIOS_INFO, "Enable LTE-related GPIO pins.\n");
gpio_configure_pads(lte_enable_pads, ARRAY_SIZE(lte_enable_pads));
} else {
printk(BIOS_INFO, "Disable LTE-related GPIO pins on craask.\n");
gpio_configure_pads(lte_disable_pads, ARRAY_SIZE(lte_disable_pads));
}
}
BOOT_STATE_INIT_ENTRY(BS_DEV_ENABLE, BS_ON_ENTRY, fw_config_handle, NULL);

14
src/mainboard/google/brya/variants/craask/gpio.c
View File

@ -5,6 +5,14 @@
#include <commonlib/helpers.h> #include <commonlib/helpers.h>
#include <soc/gpio.h> #include <soc/gpio.h>
/* Pad configuration in ramstage for craask */
static const struct pad_config override_gpio_table[] = {
/* D6 : WWAN_EN */
PAD_CFG_GPO(GPP_D6, 1, DEEP),
/* F12 : WWAN_RST_L */
PAD_CFG_GPO(GPP_F12, 1, DEEP),
};
/* Early pad configuration in bootblock */ /* Early pad configuration in bootblock */
static const struct pad_config early_gpio_table[] = { static const struct pad_config early_gpio_table[] = {
/* F12 : GSXDOUT ==> WWAN_RST_L */ /* F12 : GSXDOUT ==> WWAN_RST_L */
@ -36,6 +44,12 @@ static const struct pad_config romstage_gpio_table[] = {
PAD_CFG_GPO(GPP_H12, 1, DEEP), PAD_CFG_GPO(GPP_H12, 1, DEEP),
}; };
const struct pad_config *variant_gpio_override_table(size_t *num)
{
*num = ARRAY_SIZE(override_gpio_table);
return override_gpio_table;
}
const struct pad_config *variant_early_gpio_table(size_t *num) const struct pad_config *variant_early_gpio_table(size_t *num)
{ {
*num = ARRAY_SIZE(early_gpio_table); *num = ARRAY_SIZE(early_gpio_table);