diff options
| author | Thomas Richard <thomas.richard@bootlin.com> | 2025-08-11 16:25:53 +0300 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2025-08-18 18:45:07 +0300 |
| commit | dca2f73cf19fedd7bc38fa6a0eb50fea63cd0214 (patch) | |
| tree | 5383c597d272f766a3a8298f76811e06dd1739eb /drivers/pinctrl/Makefile | |
| parent | 236152dd9b1675a35eee912e79e6c57ca6b6732f (diff) | |
| download | linux-dca2f73cf19fedd7bc38fa6a0eb50fea63cd0214.tar.xz | |
pinctrl: Add pin controller driver for AAEON UP boards
This enables the pin control support of the onboard FPGA on AAEON UP
boards.
This FPGA acts as a level shifter between the Intel SoC pins and the pin
header, and also as a mux or switch.
+---------+ +--------------+ +---+
| | | | |
| PWM0 | \ | | H |
|----------|------ \-----|-------------| E |
| I2C0_SDA | | | A |
Intel SoC |----------|------\ | | D |
| GPIO0 | \------|-------------| E |
|----------|------ | | R |
| | FPGA | | |
----------+ +--------------+ +---+
For most of the pins, the FPGA opens/closes a switch to enable/disable
the access to the SoC pin from a pin header.
Each switch, has a direction flag that is set depending the status of the
SoC pin.
For some other pins, the FPGA acts as a mux, and routes one pin (or the
other one) to the header.
The driver also provides a GPIO chip. It requests SoC pins in GPIO mode,
and drives them in tandem with FPGA pins (switch/mux direction).
This commit adds support only for UP Squared board.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Thomas Richard <thomas.richard@bootlin.com>
Link: https://lore.kernel.org/20250811-aaeon-up-board-pinctrl-support-v9-10-29f0cbbdfb30@bootlin.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/pinctrl/Makefile')
| -rw-r--r-- | drivers/pinctrl/Makefile | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/pinctrl/Makefile b/drivers/pinctrl/Makefile index 909ab89a56d2..949693f2f0ab 100644 --- a/drivers/pinctrl/Makefile +++ b/drivers/pinctrl/Makefile @@ -59,6 +59,7 @@ obj-$(CONFIG_PINCTRL_SX150X) += pinctrl-sx150x.o obj-$(CONFIG_PINCTRL_TB10X) += pinctrl-tb10x.o obj-$(CONFIG_PINCTRL_TPS6594) += pinctrl-tps6594.o obj-$(CONFIG_PINCTRL_TH1520) += pinctrl-th1520.o +obj-$(CONFIG_PINCTRL_UPBOARD) += pinctrl-upboard.o obj-$(CONFIG_PINCTRL_ZYNQMP) += pinctrl-zynqmp.o obj-$(CONFIG_PINCTRL_ZYNQ) += pinctrl-zynq.o |