On Wed, 24 Jun 2020 at 04:30, Sean Anderson seanga2@gmail.com wrote:
The Fully-Programmable Input/Output Array (FPIOA) device controls pin multiplexing on the K210. The FPIOA can remap any supported function to any multifunctional IO pin. It can also perform basic GPIO functions, such as reading the current value of a pin. However, GPIO functionality remains largely unimplemented (in favor of the dedicated GPIO peripherals).
Signed-off-by: Sean Anderson seanga2@gmail.com
This patch was previously submitted as part of https://patchwork.ozlabs.org/project/uboot/list/?series=161576
Changes from that version include:
- Reformat to reduce errors from checkpatch
(no changes since v2)
Changes in v2:
- Don't clear existing pinctrl settings on probe
- Rewrite to use pinmux property
- Support muxing the output enable signal for each function
- Support output and input inversion
- Update binding documentation
MAINTAINERS | 2 + .../pinctrl/kendryte,k210-fpioa.txt | 102 +++ drivers/pinctrl/Kconfig | 1 + drivers/pinctrl/Makefile | 1 + drivers/pinctrl/kendryte/Kconfig | 7 + drivers/pinctrl/kendryte/Makefile | 1 + drivers/pinctrl/kendryte/pinctrl.c | 678 ++++++++++++++++++ drivers/pinctrl/kendryte/pinctrl.h | 70 ++ include/dt-bindings/pinctrl/k210-pinctrl.h | 277 +++++++ 9 files changed, 1139 insertions(+) create mode 100644 doc/device-tree-bindings/pinctrl/kendryte,k210-fpioa.txt create mode 100644 drivers/pinctrl/kendryte/Kconfig create mode 100644 drivers/pinctrl/kendryte/Makefile create mode 100644 drivers/pinctrl/kendryte/pinctrl.c create mode 100644 drivers/pinctrl/kendryte/pinctrl.h create mode 100644 include/dt-bindings/pinctrl/k210-pinctrl.h
Reviewed-by: Simon Glass sjg@chromium.org