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[v3,0/3] imx7d-remarkable2: Enable cyttsp5 and rohm,bd71815

Message ID 20230225113712.340612-1-alistair@alistair23.me
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Series imx7d-remarkable2: Enable cyttsp5 and rohm,bd71815 | expand

Message

Alistair Francis Feb. 25, 2023, 11:37 a.m. UTC
Enable the cyttsp5 and rohm,bd71815 in the device trees and
defconfig for the reMarkable 2.

v3:
 - Remove unused sleep states
v2:
 - Fixup DT formatting issues in path 3

Alistair Francis (3):
  ARM: dts: imx7d-remarkable2: Enable the cyttsp5
  ARM: imx_v6_v7_defconfig: Enable rohm,bd71815
  ARM: dts: imx7d-remarkable2: Enable the rohm,bd71815

 arch/arm/boot/dts/imx7d-remarkable2.dts | 255 ++++++++++++++++++++++++
 arch/arm/configs/imx_v6_v7_defconfig    |   5 +
 2 files changed, 260 insertions(+)

Comments

Fabio Estevam Feb. 25, 2023, 8:37 p.m. UTC | #1
On Sat, Feb 25, 2023 at 8:37 AM Alistair Francis <alistair@alistair23.me> wrote:

> +&i2c2 {
> +       clock-frequency = <100000>;
> +       pinctrl-names = "default";
> +       pinctrl-0 = <&pinctrl_i2c2>;
> +       status = "okay";
> +
> +       bd71815: pmic@4b {
> +               compatible = "rohm,bd71815";
> +               reg = <0x4b>;
> +               pinctrl-names = "default";
> +               pinctrl-0 = <&pinctrl_bd71815>;
> +               interrupt-parent = <&gpio6>; /* PMIC_INT_B GPIO6_IO16 */
> +               interrupts = <16 IRQ_TYPE_LEVEL_LOW>;
> +               gpio-controller;
> +               clocks = <&clks IMX7D_CLKO2_ROOT_SRC>;
> +               clock-output-names = "bd71815-32k-out";
> +               #clock-cells = <0>;
> +               #gpio-cells = <1>;

The binding document says #gpio-cells = <2>;

> +
> +               regulators {
> +                       #address-cells = <1>;
> +                       #size-cells = <0>;
> +
> +                       buck1_reg: regulator@0 {
> +                               reg = <0>;

The regulator@0 and reg should not be present.

Please check Documentation/devicetree/bindings/mfd/rohm,bd71815-pmic.yaml
Alistair Francis Feb. 26, 2023, 5:50 a.m. UTC | #2
On Sun, Feb 26, 2023 at 12:22 AM Matti Vaittinen
<mazziesaccount@gmail.com> wrote:
>
> Hi Alistair,
>
> On 2/25/23 13:37, Alistair Francis wrote:
> > Add support for the rohm,bd71815 power controller controller for the
> > reMarkable 2.
> >
> > Signed-off-by: Alistair Francis <alistair@alistair23.me>
> > ---
> >   arch/arm/boot/dts/imx7d-remarkable2.dts | 158 ++++++++++++++++++++++++
> >   1 file changed, 158 insertions(+)
> >
> > diff --git a/arch/arm/boot/dts/imx7d-remarkable2.dts b/arch/arm/boot/dts/imx7d-remarkable2.dts
> > index 288fc8611117..9ecb733545cc 100644
> > --- a/arch/arm/boot/dts/imx7d-remarkable2.dts
> > +++ b/arch/arm/boot/dts/imx7d-remarkable2.dts
> > @@ -91,6 +91,10 @@ wifi_pwrseq: wifi_pwrseq {
> >       };
> >   };
> >
> > +&cpu0 {
> > +     cpu-supply = <&buck1_reg>;
> > +};
> > +
> >   &clks {
> >       assigned-clocks = <&clks IMX7D_CLKO2_ROOT_SRC>,
> >                         <&clks IMX7D_CLKO2_ROOT_DIV>;
> > @@ -118,6 +122,147 @@ wacom_digitizer: digitizer@9 {
> >       };
> >   };
> >
> > +&i2c2 {
> > +     clock-frequency = <100000>;
> > +     pinctrl-names = "default";
> > +     pinctrl-0 = <&pinctrl_i2c2>;
> > +     status = "okay";
> > +
> > +     bd71815: pmic@4b {
> > +             compatible = "rohm,bd71815";
> > +             reg = <0x4b>;
> > +             pinctrl-names = "default";
> > +             pinctrl-0 = <&pinctrl_bd71815>;
> > +             interrupt-parent = <&gpio6>; /* PMIC_INT_B GPIO6_IO16 */
> > +             interrupts = <16 IRQ_TYPE_LEVEL_LOW>;
> > +             gpio-controller;
> > +             clocks = <&clks IMX7D_CLKO2_ROOT_SRC>;
> > +             clock-output-names = "bd71815-32k-out";
> > +             #clock-cells = <0>;
> > +             #gpio-cells = <1>;
> > +
> > +             regulators {
> > +                     #address-cells = <1>;
> > +                     #size-cells = <0>;
> > +
> > +                     buck1_reg: regulator@0 {
> > +                             reg = <0>;
> > +                             regulator-compatible = "buck1";
>
> I'm sure you have learned to regard my comments with certain care ;) (I
> think it was you for whom I gave an advice - which resulted a board to
> be bricked :| So, please treat my comment as if I did not know what I am
> talking about).

That was me! The board wasn't bricked though, luckily as it's my only
device. It took a month of full battery discharge cycles but I managed
to replace the device tree with a working one :)

>
> Anyways, I believe the "regulator-compatible" is deprecated and should
> no longer be used to match the node with the regulator? Instead, the
> regulator node name itself should be used for the matching.
>
> ref.
> https://elixir.bootlin.com/linux/latest/source/drivers/regulator/of_regulator.c#L380
>
> I don't think the regulator-compatible can even be found from the
> regulator.yaml binding list...

You're right. Thanks for that, I have removed them and replaced them
with "regulator-name" to match the documentation.

>
> With this remark - (and what ever it is worth):
> Reviewed-by: Matti Vaittinen <mazziesaccount@gmail.com>

Thanks!

Alistair

>
> --
> Matti Vaittinen
> Linux kernel developer at ROHM Semiconductors
> Oulu Finland
>
> ~~ When things go utterly wrong vim users can always type :help! ~~
>
Alistair Francis Feb. 26, 2023, 5:52 a.m. UTC | #3
On Sun, Feb 26, 2023 at 6:37 AM Fabio Estevam <festevam@gmail.com> wrote:
>
> On Sat, Feb 25, 2023 at 8:37 AM Alistair Francis <alistair@alistair23.me> wrote:
>
> > +&i2c2 {
> > +       clock-frequency = <100000>;
> > +       pinctrl-names = "default";
> > +       pinctrl-0 = <&pinctrl_i2c2>;
> > +       status = "okay";
> > +
> > +       bd71815: pmic@4b {
> > +               compatible = "rohm,bd71815";
> > +               reg = <0x4b>;
> > +               pinctrl-names = "default";
> > +               pinctrl-0 = <&pinctrl_bd71815>;
> > +               interrupt-parent = <&gpio6>; /* PMIC_INT_B GPIO6_IO16 */
> > +               interrupts = <16 IRQ_TYPE_LEVEL_LOW>;
> > +               gpio-controller;
> > +               clocks = <&clks IMX7D_CLKO2_ROOT_SRC>;
> > +               clock-output-names = "bd71815-32k-out";
> > +               #clock-cells = <0>;
> > +               #gpio-cells = <1>;
>
> The binding document says #gpio-cells = <2>;

Fixed!

>
> > +
> > +               regulators {
> > +                       #address-cells = <1>;
> > +                       #size-cells = <0>;
> > +
> > +                       buck1_reg: regulator@0 {
> > +                               reg = <0>;
>
> The regulator@0 and reg should not be present.

Fixed

>
> Please check Documentation/devicetree/bindings/mfd/rohm,bd71815-pmic.yaml

Thanks, I double checked my latest code against the bindings.

Alistair