Dear Wenyou Yang,
Wenyou Yang wenyou.yang@atmel.com writes:
AT91 PIO4 controller is a combined gpio-controller, pin-mux and pin-config module. The peripheral's pins are assigned through per-pin based muxing logic.
The pin configuration is performed on specific registers which are shared along with the gpio controller. So regard the pinctrl device as a child of atmel_pio4 device.
Signed-off-by: Wenyou Yang wenyou.yang@atmel.com Reviewed-by: Simon Glass sjg@chromium.org Reviewed-by: Andreas Bießmann andreas@biessmann.org
Changes in v7: None Changes in v6: None Changes in v5:
- Fixed the return value, -ENODEV->-EINVAL.
- Remove check on dev_get_parent() return.
Changes in v4: None Changes in v3:
- Rework due to the pinctrl device is regarded as atmel_pio4 device's child.
Changes in v2:
- remove meaningless comment.
- add else path for argument of pinconf.
- add inline attribute for atmel_pio4_bank_base().
- add handle if the pinmux entries is greater maximum value.
drivers/pinctrl/Kconfig | 7 ++ drivers/pinctrl/Makefile | 1 + drivers/pinctrl/pinctrl-at91-pio4.c | 182 ++++++++++++++++++++++++++++++++++++ 3 files changed, 190 insertions(+) create mode 100644 drivers/pinctrl/pinctrl-at91-pio4.c
applied to u-boot-atmel/master, thanks!
I had to rebase this patch before applying.
Best regards, Andreas Bießmann