diff options
| author | Fabien Dessenne <fabien.dessenne@foss.st.com> | 2022-05-02 18:31:14 +0300 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2022-05-05 01:04:04 +0300 |
| commit | 3389b09878dddd58ef52bd0bf43cc42ea5a9ea2a (patch) | |
| tree | 3b75435c204df23b7b94ea562745c72079252f39 /drivers/pinctrl/stm32/pinctrl-stm32.h | |
| parent | 3296c473d9aada9b8ca1f47d395727595c01cff7 (diff) | |
| download | linux-3389b09878dddd58ef52bd0bf43cc42ea5a9ea2a.tar.xz | |
pinctrl: stm32: prevent the use of the secure protected pins
The hardware denies any access from the Linux non-secure world to the
secure-protected pins. Hence, prevent any driver to request such a pin.
Mark the secure-protected GPIO lines as invalid (.init_valid_mask) and
prevent the pinmux request / pinconf setting operations.
Identify the secure pins with "NO ACCESS" in the pinconf sysfs.
Signed-off-by: Fabien Dessenne <fabien.dessenne@foss.st.com>
Link: https://lore.kernel.org/r/20220502153114.283618-1-fabien.dessenne@foss.st.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/pinctrl/stm32/pinctrl-stm32.h')
| -rw-r--r-- | drivers/pinctrl/stm32/pinctrl-stm32.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/pinctrl/stm32/pinctrl-stm32.h b/drivers/pinctrl/stm32/pinctrl-stm32.h index 2ac2db41a498..e0c31c4c8bca 100644 --- a/drivers/pinctrl/stm32/pinctrl-stm32.h +++ b/drivers/pinctrl/stm32/pinctrl-stm32.h @@ -59,6 +59,7 @@ struct stm32_desc_pin { struct stm32_pinctrl_match_data { const struct stm32_desc_pin *pins; const unsigned int npins; + bool secure_control; }; struct stm32_gpio_bank; |