mb/google/trulo/var/pujjocento: Enable WWAN function

WWAN_FCPO == GPP_D6
WWAN_RST == GPP_E17
spec reuqest: 0 < toff <10ms

LTE is controlled by bits 14 and 15 in fw_config, and P sensor
and LTE modules exist at the same time, so we use the same bit
to control whether to load the driver.

BUG=b:419325064,b:417105553
TEST=Confirm the measured WWAN power sequence

Change-Id: Ia978aef2cc721b65618ac78c13930447d1557797
Signed-off-by: Zhaoxiong Lv <lvzhaoxiong@huaqin.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/87841
Reviewed-by: Subrata Banik <subratabanik@google.com>
Reviewed-by: Eric Lai <ericllai@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/mainboard/google/brya/Kconfig

@@ -518,6 +518,7 @@ config BOARD_GOOGLE_PUJJOCENTO
 	select BOARD_GOOGLE_BASEBOARD_TRULO
 	select DRIVERS_I2C_SX9324
 	select DRIVERS_I2C_SX9324_SUPPORT_LEGACY_LINUX_DRIVER
+	select HAVE_WWAN_POWER_SEQUENCE
 	select MAINBOARD_HAS_GOOGLE_STRAUSS_KEYBOARD
 	select SOC_INTEL_COMMON_BLOCK_HDA_VERB
 	select SOC_INTEL_TCSS_USE_PDC_PMC_USBC_MUX_CONFIGURATION

src/mainboard/google/brya/variants/pujjocento/include/variant/gpio.h

@@ -5,7 +5,8 @@
 
 #include <baseboard/gpio.h>
 
+#define WWAN_FCPO	GPP_D6 /* FULL_CARD_POWER_OFF# */
 #define WWAN_RST	GPP_E17
-#define T2_OFF_MS	20
+#define T2_OFF_MS	5      /*spec request: 0 < t_off < 10ms*/
 #define SLP_S0_HDMI_EN	GPP_A7
 #endif

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

@@ -13,6 +13,11 @@ fw_config
 		option PDC_RTS_BYPASS		1
 		option PDC_TI_BYPASS		2
 	end
+	field LTE 14 15
+		option LTE_ABSENT		0
+		option LTE_PRESENT_101		1
+		option LTE_PRESENT_135		2
+	end
 end
 
 chip soc/intel/alderlake
@@ -609,7 +614,10 @@ chip soc/intel/alderlake
 				register "int_comp_resistor" = ""lowest""
 				register "input_precharge_resistor_ohms" = "4000"
 				register "input_analog_gain" = "3"
-				device i2c 28 on end
+				device i2c 28 on
+					probe LTE LTE_PRESENT_101
+					probe LTE LTE_PRESENT_135
+				end
 			end
 		end
 		device ref i2c5 on