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| author | Bartosz Golaszewski <bartosz.golaszewski@linaro.org> | 2023-09-11 11:44:43 +0200 |
|---|---|---|
| committer | Dipen Patel <dipenp@nvidia.com> | 2023-10-05 16:03:20 -0700 |
| commit | 06eaa531f2dd1a4d5137a1b49e7c762cc3689b14 (patch) | |
| tree | a9019816b537e6f6ccd7fa4d75d425036ef7d20a | |
| parent | 63137bee5a7a45df82d948e39b3b4c07d8b1ce03 (diff) | |
| download | lwn-06eaa531f2dd1a4d5137a1b49e7c762cc3689b14.tar.gz lwn-06eaa531f2dd1a4d5137a1b49e7c762cc3689b14.zip | |
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>
| -rw-r--r-- | drivers/hte/hte-tegra194.c | 13 |
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. |