mb/google/octopus: Override DDI1 DDC SDA/SCL for Garg HDMI

garg 2A2C DB: SKU ID - 1
garg HDMI DB: SKU ID - 9
garg LTE  DB: SKU ID - 17

For HDMI SKU9, GPIO needs to be overriden to enable
DDI1 DDC SDA/SCL.

BUG=b:134912735
BRANCH=octopus
TEST=emerge-octopus coreboot chromeos-bootimage
Change-Id: I6ad8e5aa52f503121b10fe353e4bf4021aee2061
Signed-off-by: Kevin Chiu <Kevin.Chiu@quantatw.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/33552
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
Reviewed-by: Justin TerAvest <teravest@chromium.org>

1 files changed, 33 insertions, 2 deletions

diff --git a/src/mainboard/google/octopus/variants/garg/gpio.c b/src/mainboard/google/octopus/variants/garg/gpio.c
index a4362409b52c..90601ce850a8 100644
--- a/src/mainboard/google/octopus/variants/garg/gpio.c
+++ b/src/mainboard/google/octopus/variants/garg/gpio.c
@@ -19,6 +19,12 @@
 #include <gpio.h>
 #include <soc/gpio.h>
 
+enum {
+	SKU_1_2A2C = 1,
+	SKU_9_HDMI = 9,
+	SKU_17_LTE = 17,
+};
+
 static const struct pad_config default_override_table[] = {
 	PAD_NC(GPIO_104, UP_20K),
 
@@ -29,9 +35,34 @@ static const struct pad_config default_override_table[] = {
 	PAD_NC(GPIO_213, DN_20K),
 };
 
+static const struct pad_config hdmi_override_table[] = {
+	PAD_NC(GPIO_104, UP_20K),
+
+	/* HV_DDI1_DDC_SDA */
+	PAD_CFG_NF_IOSSTATE_IOSTERM(GPIO_126, NONE, DEEP, NF1, HIZCRx1,
+				    DISPUPD),
+	/* HV_DDI1_DDC_SCL */
+	PAD_CFG_NF_IOSSTATE_IOSTERM(GPIO_127, NONE, DEEP, NF1, HIZCRx1,
+				    DISPUPD),
+
+	/* EN_PP3300_TOUCHSCREEN */
+	PAD_CFG_GPO_IOSSTATE_IOSTERM(GPIO_146, 0, DEEP, NONE, Tx0RxDCRx0,
+				     DISPUPD),
+
+	PAD_NC(GPIO_213, DN_20K),
+};
+
 const struct pad_config *variant_override_gpio_table(size_t *num)
 {
-	*num = ARRAY_SIZE(default_override_table);
+	uint32_t sku_id;
+	sku_id = get_board_sku();
 
-	return default_override_table;
+	switch (sku_id) {
+	case SKU_9_HDMI:
+		*num = ARRAY_SIZE(hdmi_override_table);
+		return hdmi_override_table;
+	default:
+		*num = ARRAY_SIZE(default_override_table);
+		return default_override_table;
+	}
 }