[S] Change in coreboot[master]: mb/google/rex: Add WWAN ACPI support

[Ivy Jian (Code Review)]

Ivy Jian has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/67336 )

Change subject: mb/google/rex: Add WWAN ACPI support
......................................................................

mb/google/rex: Add WWAN ACPI support

Add FM350GL 5G WWAN support using drivers/wwan/fm and addtional PM
features from RTD3.

BUG=b:244077118
TEST=check cbmem -c
[INFO ]  _SB.PCI0.RP06: Enable RTD3 for PCI: 00:1c.5 (Intel PCIe Runtime D3)
[INFO ]  _SB.PCI0.RP06: Enable WWAN for PCI: 00:1c.5 (Fibocom FM-350-GL)

check PXSX Device is generated in ssdt.

Signed-off-by: Ivy Jian 
Change-Id: I6114c589769d2eca882cf1a5255cf4c5937121a6
---
M src/mainboard/google/rex/Kconfig
M src/mainboard/google/rex/variants/rex0/overridetree.cb
2 files changed, 39 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/36/67336/1

diff --git a/src/mainboard/google/rex/Kconfig b/src/mainboard/google/rex/Kconfig
index 367cf09..55d3008 100644
--- a/src/mainboard/google/rex/Kconfig
+++ b/src/mainboard/google/rex/Kconfig
@@ -18,6 +18,7 @@
    def_bool n
    select BOARD_GOOGLE_REX_COMMON
    select DRIVERS_INTEL_PMC
+	select DRIVERS_WWAN_FM350GL
    select MAINBOARD_HAS_CHROMEOS
    select MEMORY_SOLDERDOWN
    select SOC_INTEL_METEORLAKE
diff --git a/src/mainboard/google/rex/variants/rex0/overridetree.cb b/src/mainboard/google/rex/variants/rex0/overridetree.cb
index 417d47b..0b2ebdc 100644
--- a/src/mainboard/google/rex/variants/rex0/overridetree.cb
+++ b/src/mainboard/google/rex/variants/rex0/overridetree.cb
@@ -226,6 +226,24 @@
    			.clk_req = 3,
    			.flags = PCIE_RP_HOTPLUG | PCIE_RP_LTR | PCIE_RP_AER,
    		}"
+			chip soc/intel/common/block/pcie/rtd3
+				register "reset_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_LOW(GPP_C05)"
+				register "reset_off_delay_ms" = "20"
+				# register "reset_delay_ms" = "1000"
+				register "srcclk_pin" = "3"
+				register "ext_pm_support" = "ACPI_PCIE_RP_EMIT_ALL"
+				register "skip_on_off_support" = "true"
+				device generic 0 alias rp6_rtd3 on end
+			end
+			chip drivers/wwan/fm
+				register "fcpo_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_LOW(GPP_E07)"
+				register "reset_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_LOW(GPP_A15)"
+				register "perst_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_LOW(GPP_C05)"
+				register "wake_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_LOW(GPP_F10)"
+				register "add_acpi_dma_property" = "true"
+				use rp6_rtd3 as rtd3dev
+				device generic 0 on end
+			end
    	end	#PCIE6 WWAN card
    	device ref gspi1 on end
    	device ref soc_espi on