[PATCH 2/2] test: self: add basic regulator selftest

[Sascha Hauer]

On Mon, Apr 24, 2023 at 01:59:08PM +0200, Ahmad Fatoum wrote:
> This simple test verifies registration and always-on enabling and disabling
> work as they should. It may be extended in future to support more
> complex cases.
> 
> +static const struct of_device_id test_regulator_of_match[] = {
> +	{ .compatible = "barebox,regulator-self-test" },
> +	{ /* sentintel */ },
> +};
> +
> +static struct driver regulator_test_driver = {
> +	.name = "regulator-test",
> +	.probe = regulator_probe,
> +	.of_match_table = test_regulator_of_match,
> +};
> +
> +static struct device_d *dev;
> +
> +static void test_regulator(void)
> +{
> +	extern char __dtbo_test_regulator_start[];
> +	struct device_node *overlay;
> +	int ret;
> +
> +	if (!dev) {
> +		ret = platform_driver_register(&regulator_test_driver);
> +		if (ret)
> +			return;
> +
> +		overlay = of_unflatten_dtb(__dtbo_test_regulator_start, INT_MAX);
> +		of_overlay_apply_tree(of_get_root_node(), overlay);
> +		of_probe();

This needs CONFIG_OF_OVERLAY_LIVE enabled to work. Should we make sure
this option is enabled before running this test?

Sascha

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