mb/google/guybrush/var/nipperkin: override dxio to turn off WLAN ASPM L1.2/L1.2

turn off WLAN ASPM L1.1/L1.2 as a short-term w/a for WLAN AP probe failure.

BUG=b:198258604
BRANCH=guybrush
TEST=emerge-guybrush coreboot chromeos-bootimage
     AP is able to be probed by wlan module

Signed-off-by: Kevin Chiu <kevin.chiu@quantatw.com>
Change-Id: Ic7be523626b0ff6e4b1c66ba6af13b15061ef4cb
Reviewed-on: https://review.coreboot.org/c/coreboot/+/58417
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Raul Rangel <rrangel@chromium.org>

src/mainboard/google/guybrush/port_descriptors.c

@@ -7,13 +7,6 @@
 #include <soc/gpio.h>
 #include <types.h>
 
-enum dxio_port_id {
-	WLAN,
-	SD,
-	WWAN_NVME,
-	NVME
-};
-
 /* All PCIe Resets are handled in coreboot */
 static fsp_dxio_descriptor guybrush_czn_dxio_descriptors[] = {
 	{ /* WLAN */
@@ -126,6 +119,10 @@ static const fsp_ddi_descriptor guybrush_czn_ddi_descriptors[] = {
 	}
 };
 
+void __weak variant_update_dxio_descriptors(fsp_dxio_descriptor *dxio_descriptors)
+{
+}
+
 void mainboard_get_dxio_ddi_descriptors(
 		const fsp_dxio_descriptor **dxio_descs, size_t *dxio_num,
 		const fsp_ddi_descriptor **ddi_descs, size_t *ddi_num)
@@ -138,6 +135,8 @@ void mainboard_get_dxio_ddi_descriptors(
 	if (variant_has_pcie_wwan())
 		guybrush_czn_dxio_descriptors[WWAN_NVME].gpio_group_id = GPIO_18;
 
+	variant_update_dxio_descriptors(guybrush_czn_dxio_descriptors);
+
 	*dxio_descs = guybrush_czn_dxio_descriptors;
 	*dxio_num = ARRAY_SIZE(guybrush_czn_dxio_descriptors);
 

src/mainboard/google/guybrush/variants/baseboard/include/baseboard/variants.h

@@ -5,6 +5,7 @@
 
 #include <amdblocks/gpio.h>
 #include <soc/pci_devs.h>
+#include <platform_descriptors.h>
 
 #define WLAN_DEVFN	PCIE_GPP_2_0_DEVFN
 #define SD_DEVFN	PCIE_GPP_2_1_DEVFN
@@ -48,4 +49,13 @@ bool variant_has_fpmcu(void);
 
 bool variant_has_pcie_wwan(void);
 
+void variant_update_dxio_descriptors(fsp_dxio_descriptor *dxio_descriptors);
+
+enum dxio_port_id {
+	WLAN,
+	SD,
+	WWAN_NVME,
+	NVME
+};
+
 #endif /* __BASEBOARD_VARIANTS_H__ */

src/mainboard/google/guybrush/variants/nipperkin/Makefile.inc

@@ -3,5 +3,8 @@
 bootblock-y += gpio.c
 romstage-y += gpio.c
 ramstage-y += gpio.c
+bootblock-y += variant.c
+romstage-y += variant.c
+ramstage-y += variant.c
 
 subdirs-y += ./memory

src/mainboard/google/guybrush/variants/nipperkin/variant.c

@@ -0,0 +1,10 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#include <baseboard/variants.h>
+#include <device/device.h>
+
+void variant_update_dxio_descriptors(fsp_dxio_descriptor *dxio_descriptors)
+{
+	dxio_descriptors[WLAN].link_aspm_L1_1 = false;
+	dxio_descriptors[WLAN].link_aspm_L1_2 = false;
+}