From 0d9829dc054d2dc71e9744e85ab40185eb0c6c06 Mon Sep 17 00:00:00 2001
From: Dtrain Hsu <dtrain_hsu@compal.corp-partner.google.com>
Date: Fri, 26 Mar 2021 16:05:47 +0800
Subject: mb/google/dedede/var/cret: Support LTE module

Add LTE module support into devicetree and associated GPIO configuration.

BUG=b:183774169
BRANCH=dedede
TEST=Build the cret board.

Signed-off-by: Dtrain Hsu <dtrain_hsu@compal.corp-partner.google.com>
Change-Id: I14684bb30e46bf845a401649f56b16b60db379e8
Reviewed-on: https://review.coreboot.org/c/coreboot/+/51844
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
---
 .../google/dedede/variants/cret/Makefile.inc       |  2 ++
 src/mainboard/google/dedede/variants/cret/gpio.c   |  8 ++++++++
 .../google/dedede/variants/cret/overridetree.cb    |  7 +++++++
 .../google/dedede/variants/cret/variant.c          | 23 ++++++++++++++++++++++
 4 files changed, 40 insertions(+)
 create mode 100644 src/mainboard/google/dedede/variants/cret/variant.c

(limited to 'src/mainboard/google/dedede')

diff --git a/src/mainboard/google/dedede/variants/cret/Makefile.inc b/src/mainboard/google/dedede/variants/cret/Makefile.inc
index eb2c9bc021c0..fd60a18b6946 100644
--- a/src/mainboard/google/dedede/variants/cret/Makefile.inc
+++ b/src/mainboard/google/dedede/variants/cret/Makefile.inc
@@ -1,3 +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/cret/gpio.c b/src/mainboard/google/dedede/variants/cret/gpio.c
index cb562212aeb1..3dd15efaa81a 100644
--- a/src/mainboard/google/dedede/variants/cret/gpio.c
+++ b/src/mainboard/google/dedede/variants/cret/gpio.c
@@ -5,6 +5,8 @@
 
 /* Pad configuration in ramstage */
 static const struct pad_config override_gpio_table[] = {
+	/* A10 : WWAN_EN */
+	PAD_CFG_GPO(GPP_A10, 1, PWROK),
 	/* C12 : AP_PEN_DET_ODL  ==> NC */
 	PAD_NC(GPP_C12, UP_20K),
 	/* C18 : AP_I2C_EMR_SDA */
@@ -13,6 +15,8 @@ static const struct pad_config override_gpio_table[] = {
 	PAD_NC(GPP_C19, NONE),
 	/* C22 : UART2_RTS_N ==> NC */
 	PAD_NC(GPP_C22, UP_20K),
+	/* D0  : WWAN_HOST_WAKE ==> WWAN_WDISABLE_L */
+	PAD_CFG_GPO(GPP_D0, 1, DEEP),
 	/* D12 : WCAM_RST_L ==> NC */
 	PAD_NC(GPP_D12, NONE),
 	/* D14 : EN_PP1200_CAMERA ==> NC */
@@ -23,6 +27,8 @@ static const struct pad_config override_gpio_table[] = {
 	PAD_NC(GPP_D19, NONE),
 	/* D20 : WWAN_WLAN_COEX2 ==> NC */
 	PAD_NC(GPP_D20, NONE),
+	/* D21 : WWAN_WLAN_COEX3 ==> NC */
+	PAD_NC(GPP_D21, NONE),
 	/* E0  : CLK_24M_UCAM ==> NC */
 	PAD_NC(GPP_E0, NONE),
 	/* E2  : CLK_24M_WCAM ==> NC */
@@ -33,6 +39,8 @@ static const struct pad_config override_gpio_table[] = {
 	PAD_NC(GPP_H6, NONE),
 	/* H7  : AP_I2C_CAM_SCL ==> NC */
 	PAD_NC(GPP_H7, NONE),
+	/* H17 : WWAN_RST_L */
+	PAD_CFG_GPO(GPP_H17, 1, PLTRST),
 	/* G0  : SD_CMD ==> NC */
 	PAD_NC(GPP_G0, NONE),
 	/* G1  : SD_DATA0 ==> NC */
diff --git a/src/mainboard/google/dedede/variants/cret/overridetree.cb b/src/mainboard/google/dedede/variants/cret/overridetree.cb
index 45e7afb8e0fa..0cf3bdf18737 100644
--- a/src/mainboard/google/dedede/variants/cret/overridetree.cb
+++ b/src/mainboard/google/dedede/variants/cret/overridetree.cb
@@ -75,6 +75,13 @@ chip soc/intel/jasperlake
 					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" = "10"
+						register "enable_gpio" =
+							"ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPP_A10)"
+						register "enable_delay_ms" = "20"
 						device usb 3.3 on end
 					end
 				end
diff --git a/src/mainboard/google/dedede/variants/cret/variant.c b/src/mainboard/google/dedede/variants/cret/variant.c
new file mode 100644
index 000000000000..2540fc7f2a69
--- /dev/null
+++ b/src/mainboard/google/dedede/variants/cret/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(10);
+	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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