mb/google/nissa/var/pujjo: Add WWAN EM060 power on sequence

Pujjo support WWAN EM060 device, use FW_CONFIG to handle the
power on sequence.

BUG=b:290709711
TEST=Build and check WWAN EM060 power on sequence.

Signed-off-by: Leo Chou <leo.chou@lcfc.corp-partner.google.com>
Change-Id: I66800c75274e8e1e55d4314c82b7fcdf2a4477bd
Reviewed-on: https://review.coreboot.org/c/coreboot/+/76403
Reviewed-by: Derek Huang <derekhuang@google.com>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/mainboard/google/brya/variants/pujjo/fw_config.c

@@ -45,7 +45,7 @@ static const struct pad_config stylus_disable_pads[] = {
 void fw_config_gpio_padbased_override(struct pad_config *padbased_table)
 {
 	if (fw_config_probe(FW_CONFIG(LTE, LTE_ABSENT)) && fw_config_probe(FW_CONFIG(WWAN_5G, WWAN_5G_ABSENT))
-	) {
+	&& fw_config_probe(FW_CONFIG(LTE_EM060, LTE_EM060_ABSENT))) {
 		printk(BIOS_INFO, "Disable LTE-related GPIO pins.\n");
 		gpio_padbased_override(padbased_table, lte_disable_pads,
 						ARRAY_SIZE(lte_disable_pads));

src/mainboard/google/brya/variants/pujjo/gpio.c

@@ -60,6 +60,30 @@ static const struct pad_config override_5g_gpio_table[] = {
 	PAD_NC_LOCK(GPP_H23, NONE, LOCK_CONFIG),
 };
 
+/* Pad configuration in ramstage for Pujjo LTE EM060 */
+static const struct pad_config override_em060_gpio_table[] = {
+	/* A8  : WWAN_RF_DISABLE_ODL */
+	PAD_CFG_GPO(GPP_A8, 1, DEEP),
+	/* D3  : WCAM_RST_L ==> NC */
+	PAD_NC_LOCK(GPP_D3, NONE, LOCK_CONFIG),
+	/* D6  : SRCCLKREQ1# ==> WWAN_EN */
+	PAD_CFG_GPO(GPP_D6, 1, DEEP),
+	/* D15  : EN_PP2800_WCAM_X ==> NC */
+	PAD_NC_LOCK(GPP_D15, NONE, LOCK_CONFIG),
+	/* D16  : EN_PP1800_PP1200_WCAM_X ==> NC */
+	PAD_NC_LOCK(GPP_D16, NONE, LOCK_CONFIG),
+	/* D17 : NC ==> SD_WAKE_N */
+	PAD_CFG_GPI_LOCK(GPP_D17, NONE, LOCK_CONFIG),
+	/* F12 : WWAN_RST_L */
+	PAD_CFG_GPO(GPP_F12, 1, DEEP),
+	/* H19 : SOC_I2C_SUB_INT_ODL */
+	PAD_CFG_GPI_APIC(GPP_H19, NONE, PLTRST, LEVEL, NONE),
+	/* H22  : WCAM_MCLK_R ==> NC */
+	PAD_NC(GPP_H22, NONE),
+	/* H23 : WWAN_SAR_DETECT_ODL ==> NC */
+	PAD_NC_LOCK(GPP_H23, NONE, LOCK_CONFIG),
+};
+
 /* Early pad configuration in bootblock */
 static const struct pad_config early_gpio_table[] = {
 	/* A13 : GPP_A13 ==> GSC_SOC_INT_ODL */
@@ -127,16 +151,28 @@ static const struct pad_config early_5g_gpio_table[] = {
 	PAD_CFG_GPO(GPP_H21, 0, DEEP),
 };
 
+/* Pad configuration in romstage for Pujjo */
 static const struct pad_config romstage_gpio_table[] = {
 	/* H12 : UART0_RTS# ==> SD_PERST_L */
 	PAD_CFG_GPO(GPP_H12, 1, DEEP),
 };
 
+/* Pad configuration in romstage for Pujjo WWAN EM060 */
+static const struct pad_config romstage_em060_gpio_table[] = {
+	/* H12 : UART0_RTS# ==> SD_PERST_L */
+	PAD_CFG_GPO(GPP_H12, 1, DEEP),
+	/* F12 : WWAN_RST_L */
+	PAD_CFG_GPO(GPP_F12, 1, DEEP),
+};
+
 const struct pad_config *variant_gpio_override_table(size_t *num)
 {
 	if (fw_config_probe(FW_CONFIG(WWAN_5G, WWAN_5G_PRESENT))) {
 		*num = ARRAY_SIZE(override_5g_gpio_table);
 		return override_5g_gpio_table;
+	} else if (fw_config_probe(FW_CONFIG(LTE_EM060, LTE_EM060_PRESENT))) {
+		*num = ARRAY_SIZE(override_em060_gpio_table);
+		return override_em060_gpio_table;
 	} else {
 		*num = ARRAY_SIZE(override_gpio_table);
 		return override_gpio_table;
@@ -156,6 +192,11 @@ const struct pad_config *variant_early_gpio_table(size_t *num)
 
 const struct pad_config *variant_romstage_gpio_table(size_t *num)
 {
-	*num = ARRAY_SIZE(romstage_gpio_table);
+	if (fw_config_probe(FW_CONFIG(LTE_EM060, LTE_EM060_PRESENT))) {
-	return romstage_gpio_table;
+		*num = ARRAY_SIZE(romstage_em060_gpio_table);
+		return romstage_em060_gpio_table;
+	} else {
+		*num = ARRAY_SIZE(romstage_gpio_table);
+		return romstage_gpio_table;
+	}
 }

src/mainboard/google/brya/variants/pujjo/overridetree.cb

@@ -39,6 +39,10 @@ fw_config
 		option WWAN_5G_ABSENT		0
 		option WWAN_5G_PRESENT		1
 	end
+	field LTE_EM060 20
+		option LTE_EM060_ABSENT		0
+		option LTE_EM060_PRESENT	1
+	end
 
 end
 
@@ -458,6 +462,7 @@ chip soc/intel/alderlake
 				register "input_analog_gain" = "1"
 				device i2c 28 on
 					probe LTE LTE_PRESENT
+					probe LTE_EM060 LTE_EM060_PRESENT
 				end
 			end
 			chip drivers/i2c/sx9324
@@ -708,6 +713,7 @@ chip soc/intel/alderlake
 						register "type" = "UPC_TYPE_INTERNAL"
 						device ref usb2_port2 on
 							probe LTE LTE_PRESENT
+							probe LTE_EM060 LTE_EM060_PRESENT
 						end
 					end
 					chip drivers/usb/acpi
@@ -769,6 +775,7 @@ chip soc/intel/alderlake
 						register "type" = "UPC_TYPE_INTERNAL"
 						device ref usb3_port3 on
 							probe LTE LTE_PRESENT
+							probe LTE_EM060 LTE_EM060_PRESENT
 						end
 					end
 				end