linux-kernel - [PATCH 0/4] Add support for Mobileye EyeQ5 pin controller

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Message-Id: <20231218-mbly-pinctrl-v1-0-2f7d366c2051@bootlin.com>
Date: Mon, 18 Dec 2023 18:19:45 +0100
From: Théo Lebrun <theo.lebrun@...tlin.com>
To: Vladimir Kondratiev <vladimir.kondratiev@...ileye.com>, 
 Gregory CLEMENT <gregory.clement@...tlin.com>, 
 Linus Walleij <linus.walleij@...aro.org>, Rob Herring <robh+dt@...nel.org>, 
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Thomas Bogendoerfer <tsbogend@...ha.franken.de>
Cc: linux-mips@...r.kernel.org, linux-gpio@...r.kernel.org, 
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Thomas Petazzoni <thomas.petazzoni@...tlin.com>, 
 Tawfik Bayouk <tawfik.bayouk@...ileye.com>, 
 Théo Lebrun <theo.lebrun@...tlin.com>
Subject: [PATCH 0/4] Add support for Mobileye EyeQ5 pin controller

Hi,

This series adds pinctrl support to the Mobileye EyeQ5 platform,
following up on the platform support series by Grégory Clement [1].

All registers involved live in a shared register region called OLB
("Other Logic Block"). We have control over bias, drive strength and
muxing. The latter allows two functions per pin; the first function is
always GPIO while the second one is pin-dependent. Functions are
statically declared in the driver, associated to compatibles. Two
compatibles exist, one for each bank.

The pin controller's functionality is not limited so each pin maps to
one group. That makes pin & group indexes the same, simplifying logic.
Having two instances, one per bank, also is done to simplify the
driver's logic.

The series ends by adding the two banks as devicetree nodes and
declaring a pin-mux node for each function. We also add pinctrl
references to the existing UART nodes. We are based on the reset
series [2] for the sole reason of avoiding merge conflicts in the
devicetree.

[1]: https://lore.kernel.org/lkml/20231212163459.1923041-1-gregory.clement@bootlin.com/
[2]: https://lore.kernel.org/lkml/20231218-mbly-reset-v1-0-b4688b916213@bootlin.com/

Have a nice day,
Théo Lebrun

Signed-off-by: Théo Lebrun <theo.lebrun@...tlin.com>
---
Théo Lebrun (4):
      dt-bindings: pinctrl: mobileye,eyeq5-pinctrl: add bindings
      pinctrl: eyeq5: add driver
      MIPS: mobileye: eyeq5: add pinctrl nodes & pinmux function nodes
      MIPS: mobileye: eyeq5: add pinctrl properties to uarts

 .../bindings/pinctrl/mobileye,eyeq5-pinctrl.yaml   | 125 +++++
 MAINTAINERS                                        |   2 +
 arch/mips/boot/dts/mobileye/eyeq5-pins.dtsi        | 128 +++++
 arch/mips/boot/dts/mobileye/eyeq5.dtsi             |  17 +
 drivers/pinctrl/Kconfig                            |  15 +
 drivers/pinctrl/Makefile                           |   1 +
 drivers/pinctrl/pinctrl-eyeq5.c                    | 593 +++++++++++++++++++++
 7 files changed, 881 insertions(+)
---
base-commit: cfa954ebcdc3504dbf38ff5ba1589ed0cdfc8313
change-id: 20231023-mbly-pinctrl-7afe9c738936

Best regards,
-- 
Théo Lebrun <theo.lebrun@...tlin.com>