Change in coreboot[master]: mb/google/dedede/var/sasukette: Adding LTE module support into device...

[Patrick Georgi (Code Review)]

Patrick Georgi has submitted this change. ( https://review.coreboot.org/c/coreboot/+/50985 )

Change subject: mb/google/dedede/var/sasukette: Adding LTE module support into devicetree and associated GPIO configuartion
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mb/google/dedede/var/sasukette: Adding LTE module support into devicetree and
associated GPIO configuartion

Adding LTE module support into devicetree and associated GPIO configuartion.

BUG=b:177385043
BRANCH=dedede
TEST=LTE function is OK

Signed-off-by: Tao Xia 
Change-Id: I4d91045176fd6413ac6a5eed70289a5668e5b94f
Reviewed-on: https://review.coreboot.org/c/coreboot/+/50985
Tested-by: build bot (Jenkins) 
Reviewed-by: Karthik Ramasubramanian 
---
M src/mainboard/google/dedede/variants/sasukette/Makefile.inc
M src/mainboard/google/dedede/variants/sasukette/gpio.c
M src/mainboard/google/dedede/variants/sasukette/overridetree.cb
A src/mainboard/google/dedede/variants/sasukette/variant.c
4 files changed, 44 insertions(+), 0 deletions(-)

Approvals:
  build bot (Jenkins): Verified
  Karthik Ramasubramanian: Looks good to me, approved

diff --git a/src/mainboard/google/dedede/variants/sasukette/Makefile.inc b/src/mainboard/google/dedede/variants/sasukette/Makefile.inc
index eb2c9bc..fd60a18 100644
--- a/src/mainboard/google/dedede/variants/sasukette/Makefile.inc
+++ b/src/mainboard/google/dedede/variants/sasukette/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/sasukette/gpio.c b/src/mainboard/google/dedede/variants/sasukette/gpio.c
index 0f5b6d2..d9b1307 100644
--- a/src/mainboard/google/dedede/variants/sasukette/gpio.c
+++ b/src/mainboard/google/dedede/variants/sasukette/gpio.c
@@ -5,8 +5,17 @@

/* 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_GPI_IRQ_WAKE(GPP_B7, NONE, DEEP, LEVEL, INVERT),
+
    /* D15 : EN_PP3300_CAMERA */
    PAD_CFG_GPO(GPP_D15, 1, PLTRST),
+
+	/* H17 : WWAN_RST_L */
+	PAD_CFG_GPO(GPP_H17, 0, PLTRST),
 };

const struct pad_config *variant_override_gpio_table(size_t *num)
diff --git a/src/mainboard/google/dedede/variants/sasukette/overridetree.cb b/src/mainboard/google/dedede/variants/sasukette/overridetree.cb
index 6e69b33..2b310ce 100644
--- a/src/mainboard/google/dedede/variants/sasukette/overridetree.cb
+++ b/src/mainboard/google/dedede/variants/sasukette/overridetree.cb
@@ -51,6 +51,16 @@
    					register "enable_delay_ms" = "20"
    					device usb 2.5 on end
    				end
+					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 3.3 on end
+					end
    			end
    		end
    	end # USB xHCI
diff --git a/src/mainboard/google/dedede/variants/sasukette/variant.c b/src/mainboard/google/dedede/variants/sasukette/variant.c
new file mode 100644
index 0000000..22caa06
--- /dev/null
+++ b/src/mainboard/google/dedede/variants/sasukette/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();
+}