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WIP (temporary): add misc_init_r checkpoint band + backlight re-assert

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vhaudiquet
2026-08-30 11:18:57 +02:00
parent e00e4f172b
commit 08305fd8a0
2 changed files with 16 additions and 5 deletions
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board/mediatek/mt8183/mt8183.c
+15 -5
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@@ -5,12 +5,13 @@
*/
/*
* TEMPORARY bring-up diagnostics (krane Round 13) — do not upstream.
* TEMPORARY bring-up diagnostics (krane Round 15) — do not upstream.
* Paint colored bands into the live depthcharge scanout as early-init
* checkpoints: full green = wrapper (before U-Boot), orange top band =
* board_early_init_f, blue bottom band = dram_init_banksize, red top
* band = board_early_init_r. The last one reached localizes the crash;
* a successful video probe clears the screen for the banner.
* checkpoints: magenta full screen = wrapper (before U-Boot), orange
* top band = board_early_init_f, blue bottom band = dram_init_banksize,
* red top band = board_early_init_r, yellow band = misc_init_r (after
* the banner stage). The last one reached localizes the crash; a
* successful video probe clears the screen for the banner.
*/
#include <cpu_func.h>
#include <fdtdec.h>
@@ -60,6 +61,15 @@ int board_early_init_r(void)
return 0;
}
int misc_init_r(void)
{
diag_paint(300, 60, 0x00ffff00); /* yellow */
/* re-assert the backlight in case a probed driver cleared it */
writel(0x800, (void __iomem *)0x10005114);
writel(0x10000, (void __iomem *)0x10005154);
return 0;
}
/* end TEMPORARY diagnostics */
#include <dm.h>
configs/mt8183_kukui_krane_defconfig
+1
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@@ -37,6 +37,7 @@ CONFIG_HUSH_PARSER=y
CONFIG_BOOTDELAY=-1
CONFIG_BOARD_EARLY_INIT_F=y
CONFIG_BOARD_EARLY_INIT_R=y
CONFIG_MISC_INIT_R=y
# CONFIG_CMD_XIMG is not set
# CONFIG_CMD_EXPORTENV is not set
# CONFIG_CMD_IMPORTENV is not set