Change in coreboot[master]: mb/google/dedede/var/drawcia: Add FW_CONFIG probe for EXT_VR

[Karthik Ramasubramanian (Code Review)]

Karthik Ramasubramanian has submitted this change. ( https://review.coreboot.org/c/coreboot/+/63110 )

Change subject: mb/google/dedede/var/drawcia: Add FW_CONFIG probe for EXT_VR
......................................................................

mb/google/dedede/var/drawcia: Add FW_CONFIG probe for EXT_VR

Add FW_CONFIG probe for absent ANPEC APW8738BQBI IC on drawcia.

BUG=b:223687184
TEST=emerge-dedede coreboot

Change-Id: I683049e9d2b10fc9455ef782ce798f1c453073bc
Signed-off-by: Robert Chen 
Reviewed-on: https://review.coreboot.org/c/coreboot/+/63110
Tested-by: build bot (Jenkins) 
Reviewed-by: Henry Sun 
Reviewed-by: Shou-Chieh Hsu 
Reviewed-by: Karthik Ramasubramanian 
Reviewed-by: Eric Lai 
---
M src/mainboard/google/dedede/variants/drawcia/ramstage.c
1 file changed, 10 insertions(+), 0 deletions(-)

Approvals:
  build bot (Jenkins): Verified
  Karthik Ramasubramanian: Looks good to me, approved
  Henry Sun: Looks good to me, but someone else must approve
  Shou-Chieh Hsu: Looks good to me, but someone else must approve
  Eric Lai: Looks good to me, approved

diff --git a/src/mainboard/google/dedede/variants/drawcia/ramstage.c b/src/mainboard/google/dedede/variants/drawcia/ramstage.c
index 26f1532..aed160e 100644
--- a/src/mainboard/google/dedede/variants/drawcia/ramstage.c
+++ b/src/mainboard/google/dedede/variants/drawcia/ramstage.c
@@ -4,6 +4,15 @@
 #include <boardid.h>
 #include <device/device.h>
 #include <drivers/usb/acpi/chip.h>
+#include <fw_config.h>
+#include <soc/soc_chip.h>
+
+static void ext_vr_update(void)
+{
+	struct soc_intel_jasperlake_config *cfg = config_of_soc();
+	if (fw_config_probe(FW_CONFIG(EXT_VR, EXT_VR_ABSENT)))
+		cfg->disable_external_bypass_vr = 1;
+}

void variant_devtree_update(void)
 {
@@ -21,4 +30,5 @@

config = config_of(lte_usb2);
    config->reset_gpio = lte_reset_gpio;
+	ext_vr_update();
 }