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[0/4] pinctrl: tegra: Separate Tegra194 instances

Message ID 20220701150501.443296-1-thierry.reding@gmail.com
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Series pinctrl: tegra: Separate Tegra194 instances | expand

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Thierry Reding July 1, 2022, 3:04 p.m. UTC 
From: Thierry Reding <treding@nvidia.com>

This patch series changes the pin controller DT description on Tegra194
in order to properly describe how the hardware works. Currently a
simplified description is used that merges two pin controller instances
(called AON and main) into a single DT node. This has some disadvantages
such as creating a complicated mapping between the pins in those pin
controllers and the corresponding GPIO controllers (which are already
separated).

As a prerequisite, the first patch in this series converts the device
tree bindings to json-schema. A second patch then adds an additional
compatible string for the AON instance (along with more details about
each controller's pins) and finally patch 3 converts the driver to
cope with these changes. A fourth patch makes the corresponding
changes in the Tegra194 DTS file.

Note that while this changes the DT node in an incompatible way, this
doesn't have any practical implications for backwards-compatibility. The
reason for this is that device trees have only reconfigured a very
narrow subset of pins of the main controller, so the new driver will
remain backwards-compatible with old device trees.

Thierry

Thierry Reding (4):
  dt-bindings: pinctrl: tegra: Convert to json-schema
  dt-bindings: pinctrl: tegra194: Separate instances
  pinctrl: tegra: Separate Tegra194 instances
  arm64: tegra: Separate AON pinmux from main pinmux on Tegra194

 .../bindings/clock/nvidia,tegra124-dfll.yaml  |   2 +-
 .../pinctrl/nvidia,tegra114-pinmux.txt        | 131 -------
 .../pinctrl/nvidia,tegra114-pinmux.yaml       | 264 +++++++++++++++
 .../pinctrl/nvidia,tegra124-pinmux.txt        | 153 ---------
 .../pinctrl/nvidia,tegra124-pinmux.yaml       | 287 ++++++++++++++++
 .../pinctrl/nvidia,tegra194-pinmux.txt        | 107 ------
 .../pinctrl/nvidia,tegra194-pinmux.yaml       | 320 ++++++++++++++++++
 .../pinctrl/nvidia,tegra20-pinmux.txt         | 143 --------
 .../pinctrl/nvidia,tegra20-pinmux.yaml        | 203 +++++++++++
 .../pinctrl/nvidia,tegra210-pinmux.txt        | 166 ---------
 .../pinctrl/nvidia,tegra210-pinmux.yaml       | 232 +++++++++++++
 .../pinctrl/nvidia,tegra30-pinmux.txt         | 144 --------
 .../pinctrl/nvidia,tegra30-pinmux.yaml        | 268 +++++++++++++++
 arch/arm64/boot/dts/nvidia/tegra194.dtsi      |  13 +-
 drivers/pinctrl/tegra/pinctrl-tegra.c         |  33 +-
 drivers/pinctrl/tegra/pinctrl-tegra.h         |   2 +
 drivers/pinctrl/tegra/pinctrl-tegra194.c      | 286 +++++++++-------
 17 files changed, 1758 insertions(+), 996 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/pinctrl/nvidia,tegra114-pinmux.txt
 create mode 100644 Documentation/devicetree/bindings/pinctrl/nvidia,tegra114-pinmux.yaml
 delete mode 100644 Documentation/devicetree/bindings/pinctrl/nvidia,tegra124-pinmux.txt
 create mode 100644 Documentation/devicetree/bindings/pinctrl/nvidia,tegra124-pinmux.yaml
 delete mode 100644 Documentation/devicetree/bindings/pinctrl/nvidia,tegra194-pinmux.txt
 create mode 100644 Documentation/devicetree/bindings/pinctrl/nvidia,tegra194-pinmux.yaml
 delete mode 100644 Documentation/devicetree/bindings/pinctrl/nvidia,tegra20-pinmux.txt
 create mode 100644 Documentation/devicetree/bindings/pinctrl/nvidia,tegra20-pinmux.yaml
 delete mode 100644 Documentation/devicetree/bindings/pinctrl/nvidia,tegra210-pinmux.txt
 create mode 100644 Documentation/devicetree/bindings/pinctrl/nvidia,tegra210-pinmux.yaml
 delete mode 100644 Documentation/devicetree/bindings/pinctrl/nvidia,tegra30-pinmux.txt
 create mode 100644 Documentation/devicetree/bindings/pinctrl/nvidia,tegra30-pinmux.yaml