boards: arm: mimxrt1060_evk: update LVGL config for better performance
Update LVGL settings to improve performance with ELCDIF. This update
requires changes to the LVGL module, to introduce Kconfig settings for
enabling full display refresh, and setting display buffer alignment.
Signed-off-by: Daniel DeGrasse <daniel.degrasse@nxp.com>
diff --git a/boards/arm/mimxrt1060_evk/Kconfig.defconfig b/boards/arm/mimxrt1060_evk/Kconfig.defconfig
index a8811d4..367d351 100644
--- a/boards/arm/mimxrt1060_evk/Kconfig.defconfig
+++ b/boards/arm/mimxrt1060_evk/Kconfig.defconfig
@@ -1,6 +1,6 @@
# MIMXRT1060-EVK board
-# Copyright (c) 2018, NXP
+# Copyright 2018,2023 NXP
# SPDX-License-Identifier: Apache-2.0
if BOARD_MIMXRT1060_EVK || BOARD_MIMXRT1060_EVK_HYPERFLASH || BOARD_MIMXRT1060_EVKB
@@ -56,12 +56,30 @@
config LV_Z_POINTER_KSCAN
default y
+# LVGL should allocate buffers equal to size of display
config LV_Z_VDB_SIZE
- default 16
+ default 100
+
+# Enable double buffering
+config LV_Z_DOUBLE_VDB
+ default y
+
+# Force full refresh. This prevents memory copy associated with partial
+# display refreshes, which is not necessary for the eLCDIF driver
+config LV_Z_FULL_REFRESH
+ default y
config LV_Z_DPI
default 128
+config LV_Z_BITS_PER_PIXEL
+ default 16
+
+# Force display buffers to be aligned to cache line size (32 bytes)
+config LV_Z_VDB_ALIGN
+ default 32
+
+
choice LV_COLOR_DEPTH
default LV_COLOR_DEPTH_16
endchoice
