Commit 06eaa531 authored by Bartosz Golaszewski's avatar Bartosz Golaszewski Committed by Dipen Patel
Browse files

hte: tegra194: improve the GPIO-related comment 



Using any of the GPIO interfaces using the global numberspace is
deprecated. Make it clear in the comment.

Signed-off-by: default avatarBartosz Golaszewski <bartosz.golaszewski@linaro.org>
Acked-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Reviewed-by: default avatarDipen Patel <dipenp@nvidia.com>
Signed-off-by: default avatarDipen Patel <dipenp@nvidia.com>
parent 63137bee

drivers/hte/hte-tegra194.c

+8 −5
Original line number Diff line number Diff line
@@ -407,12 +407,15 @@ static int tegra_hte_line_xlate(struct hte_chip *gc, 
		return -EINVAL;



	/*

	 * GPIO consumers can access GPIOs in two ways:

	 *

	 * There are two paths GPIO consumers can take as follows:

	 * 1) The consumer (gpiolib-cdev for example) which uses GPIO global

	 * number which gets assigned run time.

	 * 2) The consumer passing GPIO from the DT which is assigned

	 * statically for example by using TEGRA194_AON_GPIO gpio DT binding.

	 * 1) Using the global GPIO numberspace.

	 *

	 * This is the old, now DEPRECATED method and should not be used in

	 * new code. TODO: Check if tegra is even concerned by this.

	 *

	 * 2) Using GPIO descriptors that can be assigned to consumer devices

	 * using device-tree, ACPI or lookup tables.

	 *

	 * The code below addresses both the consumer use cases and maps into

	 * HTE/GTE namespace.