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board/aarch64: fix bpi-r4 dip switch values

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Inverted values for eMMC and SPI NAND.  Also use ABCD instead of
Position as column name to match board markings.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
This commit is contained in:
Joachim Wiberg
2026-04-23 14:19:08 +02:00
parent 2397e7684c
commit 5979f4e3c9
1 changed files with 6 additions and 5 deletions
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board/aarch64/bananapi-bpi-r3/README.md
+6 -5
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@@ -70,11 +70,11 @@ The BPI-R3 has a 4-position DIP switch that controls boot media:
<img align="right" src="bootstrap-switch.webp" alt="DIP switches" width=200 padding=10>
| Position | Mode | Description |
|----------|-------------|---------------------------------------|
| 0000 | SD card | Boot from microSD card |
| 0110 | eMMC | Boot from internal eMMC (recommended) |
| 1010 | SPI NAND | Boot from SPI NAND (advanced users) |
| ABCD | Mode | Description |
|------|----------|---------------------------------------|
| 0000 | SD card | Boot from microSD card |
| 0101 | SPI NAND | Boot from SPI NAND (advanced users) |
| 1001 | eMMC | Boot from internal eMMC (recommended) |
> [!NOTE]
> Switch position is read from left to right: "0" = OFF, "1" = ON.
@@ -150,6 +150,7 @@ From the U-Boot prompt:
usb start
fatload usb 0:1 0x50000000 infix-bpi-r3-emmc.img
setexpr blocks ${filesize} / 0x200
mmc dev 0
mmc write 0x50000000 0x0 ${blocks}
```