u-boot/arch/arm/dts/meson-sm1-odroid-c4-u-boot.dtsi
Marek Szyprowski 8bc780106c 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>
2021-02-10 10:00:51 +01:00

23 lines
511 B
Text

// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
/*
* Copyright (c) 2020 BayLibre, SAS
* Author: Neil Armstrong <narmstrong@baylibre.com>
*/
#include "meson-sm1-u-boot.dtsi"
&ethmac {
snps,reset-gpio = <&gpio GPIOZ_15 (GPIO_ACTIVE_LOW | GPIO_OPEN_DRAIN)>;
snps,reset-delays-us = <0 10000 1000000>;
snps,reset-active-low;
};
/* SARADC is needed for proper board variant detection */
&saradc {
status = "okay";
vref-supply = <&vddao_1v8>;
};
&tflash_vdd {
gpio = <&gpio_ao GPIOAO_3 GPIO_OPEN_DRAIN>;
};