[v4,0/4] mfd: add tps6594x support for Jacinto platforms

This patchset series adds support for the TPS6594x PMIC along with
initial support for its RTC + GPIO interface, and poweroff sequence.

Additionally, add usage of the PMIC for the various Jacintor platforms
devicetree's.

Changes from v1:
* Corrected devicetree documentation issues found with dt-schema
* Changed MFD references to PMIC reflecting the more valid use of driver
* Cleaning up variable naming and ordering within functions
* Adding gpio + regulator cells for upcoming driver support
* Switching from .probe to .probe_new API
* Revising comments within drivers to be more concise
* Adding device tree nodes for j721s2 and j721e platforms

Changes from v2:
* Adding gpio-tps6594x driver support
* Enabling gpio cell in MFD driver

Changes from v3:
* Refactoring gpio driver to use regmap gpio helpers
* Changing rtc driver to use more of device resource management 
* Minor code changes related to error messages that aren't useful
  being dropped
* Dropped wildcard in device-tree compatible, and i2c device id
* Dropped device tree changes from the series; since these should
  be in their own series later

Keerthy (2):
  MFD: TPS6594x: Add new PMIC device driver for TPS6594x chips
  rtc: rtc-tps6594x: Add support for TPS6594X PMIC RTC

Matt Ranostay (2):
  Documentation: ti,tps6594: Add DT bindings for the TPS6594x PMIC
  gpio: gpio-tps6594x: add GPIO support for TPS6594x PMIC

 .../devicetree/bindings/mfd/ti,tps6594.yaml   |  65 ++++++++
 drivers/gpio/Kconfig                          |   9 +
 drivers/gpio/Makefile                         |   1 +
 drivers/gpio/gpio-tps6594x.c                  |  78 +++++++++
 drivers/mfd/Kconfig                           |  14 ++
 drivers/mfd/Makefile                          |   1 +
 drivers/mfd/tps6594x.c                        | 113 +++++++++++++
 drivers/rtc/Kconfig                           |  10 ++
 drivers/rtc/Makefile                          |   1 +
 drivers/rtc/rtc-tps6594x.c                    | 155 ++++++++++++++++++
 include/linux/mfd/tps6594x.h                  |  88 ++++++++++
 11 files changed, 535 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mfd/ti,tps6594.yaml
 create mode 100644 drivers/gpio/gpio-tps6594x.c
 create mode 100644 drivers/mfd/tps6594x.c
 create mode 100644 drivers/rtc/rtc-tps6594x.c
 create mode 100644 include/linux/mfd/tps6594x.h

On Fri, Nov 18, 2022 at 11:21:57AM +0100, Krzysztof Kozlowski wrote:
> On 18/11/2022 10:22, Matt Ranostay wrote:
> > Add documentation for the TPS6594x PMIC including its RTC and GPIO
> > functionalities.
> > 
> 
> This is a friendly reminder during the review process.
> 
> It seems my previous comments were not fully addressed. Maybe my
> feedback got lost between the quotes, maybe you just forgot to apply it.
> Please go back to the previous discussion and either implement all
> requested changes or keep discussing them.
>
I missed serveral feedback suggestions in the last revision. Will try to be
a little more careful in the future.

> Thank you.
> 
> The comment was about proper subject prefix. Drop also redundant, second
> "DT bindings" from the subject.
> 
> 
> > Signed-off-by: Matt Ranostay <mranostay@ti.com>
> > ---
> >  .../devicetree/bindings/mfd/ti,tps6594.yaml   | 65 +++++++++++++++++++
> >  1 file changed, 65 insertions(+)
> >  create mode 100644 Documentation/devicetree/bindings/mfd/ti,tps6594.yaml
> > 
> > diff --git a/Documentation/devicetree/bindings/mfd/ti,tps6594.yaml b/Documentation/devicetree/bindings/mfd/ti,tps6594.yaml
> > new file mode 100644
> > index 000000000000..81613bcef39d
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/mfd/ti,tps6594.yaml
> > @@ -0,0 +1,65 @@
> > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/mfd/ti,tps6594x.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: TPS6594x Power Management Integrated Circuit (PMIC)
> > +
> > +maintainers:
> > +  - Keerthy <j-keerthy@ti.com>
> > +
> > +properties:
> > +  compatible:
> > +    enum:
> > +      - ti,tps6594
> 
> tps6594 is the model name? So what was previous tps6594x used also in
> title? This does not look correct.
>

So the actual part number is TPS6594-Q1. Would tps6594q1 be more concise
for naming across the device tree, and drivers?

- Matt

> > +
> > +  reg:
> > +    const: 0x48
> > +
> > +  ti,system-power-controller:
> > +    type: boolean
> > +    description: PMIC is controlling the system power.
> > +
> > +  rtc:
> > +    type: object
> > +    $ref: /schemas/rtc/rtc.yaml#
> > +    unevaluatedProperties: false
> > +    properties:
> > +      compatible:
> > +        const: ti,tps6594-rtc
> 
> Same problem.
> 
> > +
> > +  gpio:
> > +    type: object
> > +    unevaluatedProperties: false
> > +    properties:
> > +      compatible:
> > +        const: ti,tps6594x-gpio
> 
> 
> Not fixed.
> 
> 
> 
> > +
> > +additionalProperties: false
> > +
> > +required:
> > +  - compatible
> > +  - reg
> > +
> > +examples:
> > +  - |
> > +    i2c0 {
> > +        #address-cells = <1>;
> > +        #size-cells = <0>;
> > +
> > +        pmic: pmic@48 {
> > +            compatible = "ti,tps6594";
> > +            reg = <0x48>;
> > +
> > +            rtc {
> > +                compatible = "ti,tps6594-rtc";
> > +            };
> > +
> > +            gpio {
> > +                compatible = "ti,tps6594-gpio";
> 
> Does not look like you tested the bindings. Please run `make
> dt_binding_check` (see
> Documentation/devicetree/bindings/writing-schema.rst for instructions).
> 
> 
> Best regards,
> Krzysztof
>