[PATCH v3 2/2] arm64: dts: rockchip: add MNT Reform 2

[Patrick Wildt]

Hi,

thanks for the input!  I've addressed these things in a v4 that I just
sent out:

* Added chassis-type
* Removed unused nodes
* Sorted alphabetically

The brightness setting is in-line with what MNT are shipping currently
for their other modules.  I can send a follow-up patch to update the
settings for both i.MX8MQ and A311D.

Cheers,
Patrick

On Wed, Feb 12, 2025 at 10:28:59PM -0600, Jimmy Hon wrote:
> Hi,
> 
> A few questions below.
> 
> [ snip ]
> > diff --git a/arch/arm64/boot/dts/rockchip/rk3588-firefly-icore-3588q.dtsi b/arch/arm64/boot/dts/rockchip/rk3588-firefly-icore-3588q.dtsi
> > new file mode 100644
> > index 000000000000..898a7b29692f
> > --- /dev/null
> > +++ b/arch/arm64/boot/dts/rockchip/rk3588-firefly-icore-3588q.dtsi
> 
> That's interesting, the Firefly Core 3588Q SoM's dtsi is more than 95%
> the same as the Core 3588J SoM's dtsi.
> 
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/arm64/boot/dts/rockchip/rk3588-firefly-core-3588j.dtsi?h=v6.14-rc1
> 
> > diff --git a/arch/arm64/boot/dts/rockchip/rk3588-mnt-reform2.dts b/arch/arm64/boot/dts/rockchip/rk3588-mnt-reform2.dts
> > new file mode 100644
> > index 000000000000..cd7a82a3b0de
> > --- /dev/null
> > +++ b/arch/arm64/boot/dts/rockchip/rk3588-mnt-reform2.dts
> > @@ -0,0 +1,348 @@
> > +// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
> > +/*
> > + * Copyright (c) 2021 Rockchip Electronics Co., Ltd.
> > + * Copyright (c) 2024 MNT Research GmbH
> > + *
> > + */
> > +
> > +/dts-v1/;
> > +
> > +#include <dt-bindings/gpio/gpio.h>
> > +#include <dt-bindings/input/input.h>
> > +#include <dt-bindings/pinctrl/rockchip.h>
> > +#include <dt-bindings/soc/rockchip,vop2.h>
> > +#include <dt-bindings/usb/pd.h>
> > +
> > +#include "rk3588-firefly-icore-3588q.dtsi"
> > +
> > +/ {
> > +       model = "MNT Reform 2 with RCORE RK3588 Module";
> > +       compatible = "mntre,reform2-rcore", "firefly,icore-3588q", "rockchip,rk3588";
> Will you be adding "chassis-type"?
> 
> > +
> > +       aliases {
> > +               ethernet0 = &gmac0;
> > +               mmc1 = &sdmmc;
> > +       };
> > +
> > +       chosen {
> > +               stdout-path = "serial2:1500000n8";
> > +       };
> > +
> > +       backlight: backlight {
> > +               compatible = "pwm-backlight";
> > +               pwms = <&pwm8 0 10000 0>;
> > +               enable-gpios = <&gpio2 RK_PB5 GPIO_ACTIVE_HIGH>;
> > +               brightness-levels = <0 8 16 32 64 128 160 200 255>;
> > +               default-brightness-level = <128>;
> Interestingly, the brightness curve is more fine-grained than one used
> for the IMX8MQ SoM and the A311D SoM. Should those be updated
> eventually?
> 
> brightness-levels = <0 32 64 128 160 200 255>;
> default-brightness-level = <6>;
> 
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/arm64/boot/dts/freescale/imx8mq-mnt-reform2.dts?h=v6.14-rc1#n24
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/arm64/boot/dts/amlogic/meson-g12b-bananapi-cm4-mnt-reform2.dts?h=v6.14-rc1#n198
> 
> [ snip ]
> > +
> > +&combphy1_ps {
> > +       status = "okay";
> > +};
> Should this be left out? It doesn't look like pcie2x1l0 or sata1 is being used.
> 
> > +
> > +&combphy2_psu {
> > +       status = "okay";
> > +};
> Should this be left out? It doesn't look like pcie2x1l1, sata2, or
> usb_host2_xhci is being used.
> 
> > +
> > +&saradc {
> > +       vref-supply = <&avcc_1v8_s0>;
> > +       status = "okay";
> > +};
> > +
> > +&tsadc {
> > +       status = "okay";
> > +};
> These nodes should be sorted alphabetically
> 
> > +
> > +&sdmmc {
> > +       bus-width = <4>;
> > +       max-frequency = <40000000>;
> > +       no-sdio;
> > +       no-mmc;
> > +       no-1-8-v;
> > +       cap-sd-highspeed;
> > +       vqmmc-supply = <&vcc3v3_pcie30>;
> > +       vmmc-supply = <&vcc3v3_pcie30>;
> > +       cd-gpios = <&gpio0 RK_PA4 GPIO_ACTIVE_LOW>;
> > +       disable-wp;
> > +       status = "okay";
> > +};
> > +
> > +&mdio0 {
> > +       rgmii_phy: ethernet-phy at 0 {
> > +               compatible = "ethernet-phy-ieee802.3-c22";
> > +               reg = <0x0>;
> > +       };
> > +};
> 
> Jimmy