Tony Huang has uploaded this change for review.

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mb/google/dedede/var/kracko: Add LTE modem support

Add LTE modem to devicetree
Configure GPIO control for LTE modem

BUG=b:178092096
TEST=Built image and verified with command modem status

Change-Id: Id8f483e1132a08500fbe950711cc84197ce40b12
Signed-off-by: Tony Huang <tony-huang@quanta.corp-partner.google.com>
---
A src/mainboard/google/dedede/variants/kracko/Makefile.inc
A src/mainboard/google/dedede/variants/kracko/gpio.c
M src/mainboard/google/dedede/variants/kracko/overridetree.cb
A src/mainboard/google/dedede/variants/kracko/variant.c
4 files changed, 68 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/04/52204/1
diff --git a/src/mainboard/google/dedede/variants/kracko/Makefile.inc b/src/mainboard/google/dedede/variants/kracko/Makefile.inc
new file mode 100644
index 0000000..fd60a18
--- /dev/null
+++ b/src/mainboard/google/dedede/variants/kracko/Makefile.inc
@@ -0,0 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-or-later
+
+ramstage-y += gpio.c
+
+smm-y += variant.c
diff --git a/src/mainboard/google/dedede/variants/kracko/gpio.c b/src/mainboard/google/dedede/variants/kracko/gpio.c
new file mode 100644
index 0000000..ca89730
--- /dev/null
+++ b/src/mainboard/google/dedede/variants/kracko/gpio.c
@@ -0,0 +1,25 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#include <baseboard/gpio.h>
+#include <baseboard/variants.h>
+
+/* Pad configuration in ramstage*/
+static const struct pad_config gpio_table[] = {
+ /* A10 : WWAN_EN */
+ PAD_CFG_GPO(GPP_A10, 1, PWROK),
+
+ /* B7 : PCIE_CLKREQ2_N ==> WWAN_SAR_DETECT_ODL*/
+ PAD_CFG_GPO(GPP_B7, 1, DEEP),
+
+ /* D0 : WWAN_HOST_WAKE ==> WWAN_WDISABLE_L */
+ PAD_CFG_GPO(GPP_D0, 1, DEEP),
+
+ /* H17 : WWAN_RST_L */
+ PAD_CFG_GPO(GPP_H17, 0, PLTRST),
+};
+
+const struct pad_config *variant_override_gpio_table(size_t *num)
+{
+ *num = ARRAY_SIZE(gpio_table);
+ return gpio_table;
+}
diff --git a/src/mainboard/google/dedede/variants/kracko/overridetree.cb b/src/mainboard/google/dedede/variants/kracko/overridetree.cb
index 99517bd..66fb274 100644
--- a/src/mainboard/google/dedede/variants/kracko/overridetree.cb
+++ b/src/mainboard/google/dedede/variants/kracko/overridetree.cb
@@ -55,6 +55,16 @@
chip drivers/usb/acpi
device usb 0.0 on
chip drivers/usb/acpi
+ register "desc" = ""LTE""
+ register "type" = "UPC_TYPE_INTERNAL"
+ register "has_power_resource" = "1"
+ register "reset_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_LOW(GPP_H17)"
+ register "reset_off_delay_ms" = "20"
+ register "enable_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPP_A10)"
+ register "enable_delay_ms" = "20"
+ device usb 2.3 on end
+ end
+ chip drivers/usb/acpi
register "desc" = ""UFCamera""
register "type" = "UPC_TYPE_INTERNAL"
device usb 2.5 on end
@@ -64,6 +74,11 @@
register "type" = "UPC_TYPE_INTERNAL"
device usb 2.6 on end
end
+ chip drivers/usb/acpi
+ register "desc" = ""LTE""
+ register "type" = "UPC_TYPE_INTERNAL"
+ device usb 3.3 on end
+ end
end
end
end # USB xHCI
diff --git a/src/mainboard/google/dedede/variants/kracko/variant.c b/src/mainboard/google/dedede/variants/kracko/variant.c
new file mode 100644
index 0000000..22caa06
--- /dev/null
+++ b/src/mainboard/google/dedede/variants/kracko/variant.c
@@ -0,0 +1,23 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#include <acpi/acpi.h>
+#include <baseboard/variants.h>
+#include <delay.h>
+#include <gpio.h>
+
+static void power_off_lte_module(void)
+{
+ gpio_output(GPP_H17, 0);
+ mdelay(20);
+ gpio_output(GPP_A10, 0);
+}
+
+void variant_smi_sleep(u8 slp_typ)
+{
+ /*
+ * Once the FW_CONFIG is provisioned, power off LTE module only under
+ * the situation where it is stuffed.
+ */
+ if (slp_typ == ACPI_S5)
+ power_off_lte_module();
+}

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Gerrit-Project: coreboot
Gerrit-Branch: master
Gerrit-Change-Id: Id8f483e1132a08500fbe950711cc84197ce40b12
Gerrit-Change-Number: 52204
Gerrit-PatchSet: 1
Gerrit-Owner: Tony Huang <tony-huang@quanta.corp-partner.google.com>
Gerrit-MessageType: newchange