sc7180: Add display hardware pipe line initialization

Add sc7180 display hardware pipeline programming support
and invoke the display initialization from soc_init.

Changes in V1:
- added display init required check.
- added edid read function using i2c communication.
- added sn65dsi86 bridge driver to init bridge.
- moved display initialization to mainboard file.

Changes in V2:
- moved diplay init sequence to mainboard file
- moved edid read function to bridge driver.
- calculated timing paramters using edid parameters.
- removed command mode config code.
- moved bridge driver to drivers/ti.
- seperated out bridge and soc code with mainboard file as interface.

Changes in V3:
- add GPIO selection at runtime based on boardid.
- add vbif register struct overlay.

Changes in V4:
- update gpio config for lazor board.

Change-Id: I7d5e3f1781c48759553243abeb3d694f76cd008e
Signed-off-by: Vinod Polimera <vpolimer@codeaurora.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/39615
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>

1 files changed, 5 insertions, 0 deletions

diff --git a/src/mainboard/google/trogdor/board.h b/src/mainboard/google/trogdor/board.h
index bd7222fefa..39661b5f21 100644
--- a/src/mainboard/google/trogdor/board.h
+++ b/src/mainboard/google/trogdor/board.h
@@ -13,6 +13,11 @@
 #define GPIO_SD_CD_L	GPIO(69)
 #define GPIO_AMP_ENABLE	GPIO(23)
 
+/* Display specific GPIOS */
+#define GPIO_BACKLIGHT_ENABLE  GPIO(12)
+#define GPIO_EDP_BRIDGE_ENABLE (CONFIG(TROGDOR_REV0) ? GPIO(14) : GPIO(104))
+#define GPIO_EN_PP3300_DX_EDP  (CONFIG(TROGDOR_REV0) ? GPIO(106) : GPIO(30))
+
 void setup_chromeos_gpios(void);
 
 #endif /* _COREBOOT_SRC_MAINBOARD_GOOGLE_TROGDOR_BOARD_H_ */