tree 05440dc6f2ede4f716735962d2ed62507c402324
parent 4547551aa019698524e809f81f65d5782f62bc1d
author Marek Szyprowski <m.szyprowski@samsung.com> 1612429905 +0100
committer Neil Armstrong <narmstrong@baylibre.com> 1612947651 +0100

board: amlogic: odroid: add runtime detection of the N2/N2+/C4/HC4 variants

Use the ADC channel 1 to check the hardware revision of the board and
detect the N2 vs. N2+ and the C4 vs. HC4 variants. Each of them use
different dtb file, so adjust fdtfile environment variable to the
detected variant.

The ADC min/max values for each variant are taken from the vendor code,
adjusted to the 12-bit ADC driver operation mode (vendor code use 10-bit
mode).

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>