[PATCH v2 02/10] ARM: dts: imx6ul: support Engicam MicroGEA-MX6UL SoM

[Dario Binacchi]

Hi Frank,

On Mon, Jun 9, 2025 at 5:16 PM Frank Li <Frank.li at nxp.com> wrote:
>
> On Mon, Jun 09, 2025 at 12:15:35PM +0200, Dario Binacchi wrote:
> > Support Engicam MicroGEA-MX6UL SoM with:
> >
> >  - 256 Mbytes NAND Flash
> >  - 512 Mbytes DRAM DDR2
> >  - Ethernet MAC
> >
> > Signed-off-by: Dario Binacchi <dario.binacchi at amarulasolutions.com>
> >
> > ---
> >
> > Changes in v2:
> > - Change local-mac-address to 00 00 00 00 00 00. The actual value will
> >   be set by the bootloader. The previous one was assigned to Freescale
> >   Semiconductor.
> >
> >  .../dts/nxp/imx/imx6ull-engicam-microgea.dtsi | 96 +++++++++++++++++++
> >  1 file changed, 96 insertions(+)
> >  create mode 100644 arch/arm/boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi
> >
> > diff --git a/arch/arm/boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi
> > new file mode 100644
> > index 000000000000..38971f6512a2
> > --- /dev/null
> > +++ b/arch/arm/boot/dts/nxp/imx/imx6ull-engicam-microgea.dtsi
> > @@ -0,0 +1,96 @@
> > +// SPDX-License-Identifier: GPL-2.0
> > +/*
> > + * Copyright (C) 2025 Amarula Solutions, Dario Binacchi <dario.binacchi at amarulasolutions.com>
> > + * Copyright (C) 2025 Engicam srl
> > + */
> > +
> > +/dts-v1/;
> > +
> > + #include "imx6ull.dtsi"
> > +
> > +/ {
> > +     compatible = "engicam,microgea-imx6ull", "fsl,imx6ull";
> > +
> > +     memory at 80000000 {
> > +             device_type = "memory";
> > +             reg = <0x80000000 0x20000000>;
> > +     };
> > +};
> > +
> > +&fec1 {
> > +     pinctrl-names = "default";
> > +     pinctrl-0 = <&pinctrl_enet1>, <&pinctrl_phy_reset>;
> > +     phy-mode = "rmii";
> > +     phy-handle = <&ethphy0>;
> > +     local-mac-address = [00 00 00 00 00 00];
> > +     status = "okay";
> > +
> > +     mdio {
> > +             #address-cells = <1>;
> > +             #size-cells = <0>;
> > +
> > +             ethphy0: ethernet-phy at 0 {
> > +                     compatible = "ethernet-phy-ieee802.3-c22";
> > +                     reg = <0>;
> > +                     reset-gpios = <&gpio5 9 GPIO_ACTIVE_LOW>;
> > +                     reset-assert-us = <4000>;
> > +                     reset-deassert-us = <4000>;
> > +             };
> > +     };
> > +};
> > +
> > +/* NAND */
> > +&gpmi {
> > +     pinctrl-names = "default";
> > +     pinctrl-0 = <&pinctrl_gpmi_nand>;
> > +     nand-ecc-mode = "hw";
> > +     nand-ecc-strength = <0>;
> > +     nand-ecc-step-size = <0>;
> > +     nand-on-flash-bbt;
>
> Not related this patch, latest device tree binding for nand-controler should
> look like
>
>         nand at 0 {
>                 reg = <0>;
>                 nand-ecc-mode = "hw";
>                 ...
>         }
>
> I am not sure if above dts work at your ul board.

I tested the change you suggested, but it's not working on my board.

I also did a search through various DTS files on the i.MX6ULL SOM, and indeed,
the scheme I adopted is used by other boards that have already been merged.

Thanks and regards,
Dario

>
> Frank
>
> > +     status = "okay";
> > +};
> > +
> > +&iomuxc {
> > +
> > +     pinctrl_enet1: enet1grp {
> > +             fsl,pins = <
> > +                     MX6UL_PAD_ENET1_RX_EN__ENET1_RX_EN      0x1b0b0
> > +                     MX6UL_PAD_ENET1_RX_DATA0__ENET1_RDATA00 0x1b0b0
> > +                     MX6UL_PAD_ENET1_RX_DATA1__ENET1_RDATA01 0x1b0b0
> > +                     MX6UL_PAD_ENET1_TX_EN__ENET1_TX_EN      0x1b0b0
> > +                     MX6UL_PAD_ENET1_TX_DATA0__ENET1_TDATA00 0x1b0b0
> > +                     MX6UL_PAD_ENET1_TX_DATA1__ENET1_TDATA01 0x1b0b0
> > +                     MX6UL_PAD_ENET1_TX_CLK__ENET1_REF_CLK1  0x4001b009
> > +                     MX6UL_PAD_GPIO1_IO07__ENET1_MDC         0x1b0b0
> > +                     MX6UL_PAD_GPIO1_IO06__ENET1_MDIO        0x1b0b0
> > +             >;
> > +     };
> > +
> > +     pinctrl_gpmi_nand: gpminandgrp {
> > +             fsl,pins = <
> > +                     MX6UL_PAD_NAND_CLE__RAWNAND_CLE         0xb0b1
> > +                     MX6UL_PAD_NAND_ALE__RAWNAND_ALE         0xb0b1
> > +                     MX6UL_PAD_NAND_WP_B__RAWNAND_WP_B       0xb0b1
> > +                     MX6UL_PAD_NAND_READY_B__RAWNAND_READY_B 0xb000
> > +                     MX6UL_PAD_NAND_CE0_B__RAWNAND_CE0_B     0xb0b1
> > +                     MX6UL_PAD_NAND_RE_B__RAWNAND_RE_B       0xb0b1
> > +                     MX6UL_PAD_NAND_WE_B__RAWNAND_WE_B       0xb0b1
> > +                     MX6UL_PAD_NAND_DATA00__RAWNAND_DATA00   0xb0b1
> > +                     MX6UL_PAD_NAND_DATA01__RAWNAND_DATA01   0xb0b1
> > +                     MX6UL_PAD_NAND_DATA02__RAWNAND_DATA02   0xb0b1
> > +                     MX6UL_PAD_NAND_DATA03__RAWNAND_DATA03   0xb0b1
> > +                     MX6UL_PAD_NAND_DATA04__RAWNAND_DATA04   0xb0b1
> > +                     MX6UL_PAD_NAND_DATA05__RAWNAND_DATA05   0xb0b1
> > +                     MX6UL_PAD_NAND_DATA06__RAWNAND_DATA06   0xb0b1
> > +                     MX6UL_PAD_NAND_DATA07__RAWNAND_DATA07   0xb0b1
> > +             >;
> > +     };
> > +};
> > +
> > +&iomuxc_snvs {
> > +     pinctrl_phy_reset: phy-resetgrp {
> > +             fsl,pins = <
> > +                     MX6ULL_PAD_SNVS_TAMPER9__GPIO5_IO09     0x1b0b0
> > +             >;
> > +     };
> > +};
> > --
> > 2.43.0
> >



-- 

Dario Binacchi

Senior Embedded Linux Developer

dario.binacchi at amarulasolutions.com

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