[S] Change in coreboot[master]: mb/google/myst: Enable USB WWAN

[Felix Held (Code Review)]

Felix Held has submitted this change. ( https://review.coreboot.org/c/coreboot/+/75660?usp=email )

Change subject: mb/google/myst: Enable USB WWAN
......................................................................

mb/google/myst: Enable USB WWAN

Add usb wwan device tree entry. Also set wwan_rst to high due to
HW design active high.

BUG=b:285792436
TEST=check FM101 is detected by Linux kernel.
Bus 002 Device 002: ID 2cb7:01a2 Fibocom Wireless Inc.

Signed-off-by: Eric Lai 
Change-Id: I0aa60cb284d4b7f99e16643a92ee58467a355026
Reviewed-on: https://review.coreboot.org/c/coreboot/+/75660
Reviewed-by: Tim Van Patten 
Reviewed-by: Paul Menzel 
Reviewed-by: Martin Roth 
Tested-by: build bot (Jenkins) 
---
M src/mainboard/google/myst/variants/baseboard/devicetree.cb
M src/mainboard/google/myst/variants/baseboard/gpio.c
2 files changed, 20 insertions(+), 1 deletion(-)

Approvals:
  Paul Menzel: Looks good to me, but someone else must approve
  Tim Van Patten: Looks good to me, approved
  Martin Roth: Looks good to me, approved
  build bot (Jenkins): Verified

diff --git a/src/mainboard/google/myst/variants/baseboard/devicetree.cb b/src/mainboard/google/myst/variants/baseboard/devicetree.cb
index f53f5b7..01a4389 100644
--- a/src/mainboard/google/myst/variants/baseboard/devicetree.cb
+++ b/src/mainboard/google/myst/variants/baseboard/devicetree.cb
@@ -293,6 +293,25 @@
    				end
    			end
    		end
+			device ref xhci_1 on
+				chip drivers/usb/acpi
+					register "type" = "UPC_TYPE_HUB"
+					device ref xhci_1_root_hub on
+						chip drivers/usb/acpi
+							register "desc" = ""USB3 WWAN""
+							register "type" = "UPC_TYPE_INTERNAL"
+							register "has_power_resource" = "1"
+							register "enable_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPIO_6)"
+							register "enable_delay_ms" = "20"
+							register "reset_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPIO_11)"
+							register "reset_off_delay_ms" = "20"
+							device ref usb3_port7 on
+								probe WWAN WWAN_FM101GL
+							end
+						end
+					end
+				end
+			end
    		device ref acp on end # Audio Processor (ACP)
    		device ref mp2 on end # Sensor Fusion Hub (MP2)
    	end
diff --git a/src/mainboard/google/myst/variants/baseboard/gpio.c b/src/mainboard/google/myst/variants/baseboard/gpio.c
index 7979763..efd654e 100644
--- a/src/mainboard/google/myst/variants/baseboard/gpio.c
+++ b/src/mainboard/google/myst/variants/baseboard/gpio.c
@@ -28,7 +28,7 @@
    /* EN_PP3300_WLAN */
    PAD_GPO(GPIO_9, HIGH),
    /* WWAN_RST */
-	PAD_GPO(GPIO_11, LOW),
+	PAD_GPO(GPIO_11, HIGH),
    /* Unused */
    PAD_NC(GPIO_12),
    /* GPIO_13 - GPIO_15: Not available */