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authorBartosz Golaszewski <bartosz.golaszewski@linaro.org>2023-09-11 12:44:43 +0300
committerDipen Patel <dipenp@nvidia.com>2023-10-06 02:03:20 +0300
commit06eaa531f2dd1a4d5137a1b49e7c762cc3689b14 (patch)
treea9019816b537e6f6ccd7fa4d75d425036ef7d20a /drivers/hte
parent63137bee5a7a45df82d948e39b3b4c07d8b1ce03 (diff)
downloadlinux-06eaa531f2dd1a4d5137a1b49e7c762cc3689b14.tar.xz
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: Bartosz Golaszewski <bartosz.golaszewski@linaro.org> Acked-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Dipen Patel <dipenp@nvidia.com> Signed-off-by: Dipen Patel <dipenp@nvidia.com>
Diffstat (limited to 'drivers/hte')
-rw-r--r--drivers/hte/hte-tegra194.c13
1 files changed, 8 insertions, 5 deletions
diff --git a/drivers/hte/hte-tegra194.c b/drivers/hte/hte-tegra194.c
index 6fe6897047ac..9fd3c00ff695 100644
--- a/drivers/hte/hte-tegra194.c
+++ b/drivers/hte/hte-tegra194.c
@@ -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.