8bc780106c
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>
14 lines
302 B
Plaintext
14 lines
302 B
Plaintext
// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
|
|
/*
|
|
* Copyright (c) 2019 BayLibre, SAS.
|
|
* Author: Neil Armstrong <narmstrong@baylibre.com>
|
|
*/
|
|
|
|
#include "meson-g12-common-u-boot.dtsi"
|
|
|
|
/* SARADC is needed for proper board variant detection */
|
|
&saradc {
|
|
status = "okay";
|
|
vref-supply = <&vddao_1v8>;
|
|
};
|