Displays all product categoris on the homepage of Storefront

storefront-homepage-all-product-categories.php

function sd_display_four_home_product_categories( $args ) {

	// Displays all product categoris on the homepage of Storefront
	$args['limit'] = -1;

	// Output
	return $args;

}
add_filter( 'storefront_product_categories_args', 'sd_display_four_home_product_categories' );