Change in coreboot[master]: mb/google/trogdor: Read LCM_ID and put into SKU_ID

[zanxi chen (Code Review)]

zanxi chen has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/57329 )

Change subject: mb/google/trogdor: Read LCM_ID and put into SKU_ID
......................................................................

mb/google/trogdor: Read LCM_ID and put into SKU_ID

Read/return LCM_ID as part of SKU_ID, so the mipi panel
can be compatible in this way.

BUG=b:197708579,b:191574572
TEST=LCM_ID should be set correctly.
BRANCH=none

Change-Id: I018b3f460f9d084d1a3f0dac026f1cd9dde284e2
Signed-off-by: Zanxi Chen 
---
M src/mainboard/google/trogdor/boardid.c
1 file changed, 15 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/29/57329/1

diff --git a/src/mainboard/google/trogdor/boardid.c b/src/mainboard/google/trogdor/boardid.c
index c972160..3c3ba99 100644
--- a/src/mainboard/google/trogdor/boardid.c
+++ b/src/mainboard/google/trogdor/boardid.c
@@ -42,6 +42,19 @@
    return id;
 }

+static uint8_t lcm_id(void)
+{
+	static uint32_t id = UNDEFINED_STRAPPING_ID;
+	const gpio_t pins[] = {[0] = GPIO(4)};
+	if (id == UNDEFINED_STRAPPING_ID) {
+		if (CONFIG(TROGDOR_HAS_MIPI_PANEL))
+		    id = gpio_base2_value(pins, ARRAY_SIZE(pins));
+		else
+		    id = 0;
+	}
+	return id;
+}
+
 uint32_t sku_id(void)
 {
    static uint32_t id = UNDEFINED_STRAPPING_ID;
@@ -56,5 +69,7 @@
    		id = gpio_binary_first_base3_value(pins, ARRAY_SIZE(pins));
    }

+	id = lcm_id() << 4 | id;
+
    return id;
 }