The series add support for the serial GPIO controller used by
Microchip Sparx5, as well as (MSCC) ocelot/jaguar2 SoCs.
v9 changes (from Andy):
- Avoid bitfield duplication (use FIELD_PREP/FIELD_GET)
- Introduce SGPIO_SRC_BITS define constant
- Use ENOTSUPP instead of EOPNOTSUPP (checkpatch will complain)
- Drop dev_err() when using pin for wrong direction
- Replaced left-over OF code with device_property_* flavors
- Use devm_kasprintf() instead of strnprintf()+devm_strdup()
- Minor formatting changes, deleted comments
v8 changes (from Andy):
- Removed OF dependency/usage entirely.
- Trimmed+sorted include files.
- Made local variables reverse xmas sorted.
- Removed __func__ usage.
- Changed some occurences of "if (x) { ..." to early return.
- Use dev_err_probe() where possible.
- Replace of_device_get_match_data() with device_get_match_data()
- Some minor formatting corrections
- Do per-pin string allocation as opposed to bulk allocation+chop.
v7 changes:
- Fixed wrong sizeof in pin string name template. (Andy)
- Collapsed sgpio_input_get() to one liner. (Andy)
- Eliminated unneeded variable in microchip_sgpio_get_value()
- Removed noisy dev_info(). (Andy)
- Replaced platform_get_resource()+devm_ioremap_resource() with
devm_platform_ioremap_resource(). (Andy)
- Replaced device_property_read_u32() with
of_property_read_u32(). (Andy)
- Replaced __builtin_ffsll() with __builtin_ffs() for MIPS32 targets.
v6 changes:
- Use "bus-frequency" instead of "microchip,sgpio-frequency". Drop
'$ref'. (Robh)
- Added "ngpios" description, bumped minimum to 32. (Linus)
- Added "#size-cells" description. (Linus)
- Changed "bus-frequency" validation in driver to reflect the YAML
description.
v5 changes (driver comments from Linus):
- Collect bank data in sgpio_bank struct
- Add is_input boolean to sgpio_bank struct
- Use single-bit bitmasks in sgpio_output_set() and sgpio_output_get()
- Eliminate superfluous struct pinctrl_dev *pctl_dev in bank data
- Fix wrong ngpio consistency check
v4 changes (binding comments from Rob):
- microchip,sgpio-port-ranges changed to uint32-matrix so tuples can
be represented properly.
- gpio controller node name changed to "gpio@[0-1]"
- whitespace fixes
- DT files updated as per schema changes
v3 changes:
- Renamed all usage of "mchp" abbrevation with "microchip".
- Split the in/output directions into (two) separate banks.
- Eliminated the bindings include file (from above)
- Changed SPDX license to "GPL-2.0-or-later"
- Change -ENOTSUPP to -EOPNOTSUPP
- Minor type/symbol naming changes
v2 changes:
- Adds both in and output modes.
- Use direct adressing of the individual banks (#gpio-cells = <4>),
also osoleting need for addressing macros in bindings include file.
- Property 'microchip,sgpio-ports' (uint32, bitmask) replaced by
proper range set (array of [start,end]) 'microchip,sgpio-port-ranges'.
- Fixes whitespace issues in Kconfig file
Lars Povlsen (3):
dt-bindings: pinctrl: Add bindings for pinctrl-microchip-sgpio driver
pinctrl: pinctrl-microchip-sgpio: Add pinctrl driver for Microsemi
Serial GPIO
arm64: dts: sparx5: Add SGPIO devices
.../pinctrl/microchip,sparx5-sgpio.yaml | 145 ++++
MAINTAINERS | 1 +
arch/arm64/boot/dts/microchip/sparx5.dtsi | 91 +++
.../boot/dts/microchip/sparx5_pcb125.dts | 5 +
.../dts/microchip/sparx5_pcb134_board.dtsi | 258 +++++++
.../dts/microchip/sparx5_pcb135_board.dtsi | 55 ++
drivers/pinctrl/Kconfig | 16 +
drivers/pinctrl/Makefile | 1 +
drivers/pinctrl/pinctrl-microchip-sgpio.c | 707 ++++++++++++++++++
9 files changed, 1279 insertions(+)
create mode 100644 Documentation/devicetree/bindings/pinctrl/microchip,sparx5-sgpio.yaml
create mode 100644 drivers/pinctrl/pinctrl-microchip-sgpio.c
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2.25.1
