[PATCH 2/2] imx: Support i.MX91 11x11 FRDM board

[Tom Rini]

On Thu, Nov 27, 2025 at 06:54:58PM +0900, Joseph Guo wrote:
> Add i.MX91 11x11 EVK Board support.
>  - Four ddr scripts included w/o inline ecc feature. Support
>    both 1gb and 2gb DDR
>  - SDHC/EQOS/I2C/UART supported
>  - PCA9451 supported, default nominal drive mode
>  - Documentation added.
> 
> Signed-off-by: Joseph Guo <qijian.guo at nxp.com>
> ---
>  arch/arm/dts/imx91-11x11-frdm-u-boot.dtsi          |  195 ++
>  arch/arm/mach-imx/imx9/Kconfig                     |    8 +
>  board/freescale/imx91_frdm/Kconfig                 |   19 +
>  board/freescale/imx91_frdm/MAINTAINERS             |    7 +
>  board/freescale/imx91_frdm/Makefile                |   16 +
>  board/freescale/imx91_frdm/imx91_frdm.c            |   28 +
>  board/freescale/imx91_frdm/imx91_frdm.env          |   88 +
>  .../imx91_frdm/lpddr4_2400mts_1gb_timing.c         | 1996 ++++++++++++++++++++
>  .../imx91_frdm/lpddr4_2400mts_2gb_timing.c         | 1996 ++++++++++++++++++++
>  .../imx91_frdm/lpddr4_2400mts_ecc_1gb_timing.c     | 1996 ++++++++++++++++++++
>  .../imx91_frdm/lpddr4_2400mts_ecc_2gb_timing.c     | 1996 ++++++++++++++++++++
>  board/freescale/imx91_frdm/lpddr4_timing.h         |   12 +
>  board/freescale/imx91_frdm/spl.c                   |  204 ++
>  configs/imx91_11x11_frdm_defconfig                 |  143 ++
>  configs/imx91_11x11_frdm_inline_ecc_defconfig      |  143 ++
>  doc/board/nxp/imx91_frdm.rst                       |   99 +
>  doc/board/nxp/index.rst                            |    1 +
>  include/configs/imx91_frdm.h                       |   25 +
>  18 files changed, 8972 insertions(+)
> 
> diff --git a/arch/arm/dts/imx91-11x11-frdm-u-boot.dtsi b/arch/arm/dts/imx91-11x11-frdm-u-boot.dtsi
> new file mode 100644
> index 0000000000000000000000000000000000000000..7934ec89cfa58c1c033ba08ae7be826f5823bc1b
> --- /dev/null
> +++ b/arch/arm/dts/imx91-11x11-frdm-u-boot.dtsi
> @@ -0,0 +1,195 @@
> +// SPDX-License-Identifier: GPL-2.0+
> +/*
> + * Copyright 2025 NXP
> + */
> +
> +#include "imx91-u-boot.dtsi"
> +
> +/ {
> +	wdt-reboot {
> +		compatible = "wdt-reboot";
> +		wdt = <&wdog3>;
> +		bootph-pre-ram;
> +		bootph-some-ram;
> +	};
> +
> +	firmware {
> +		optee {
> +			compatible = "linaro,optee-tz";
> +			method = "smc";
> +		};
> +	};
> +};
> +
> +&{/soc at 0} {
> +	bootph-all;
> +	bootph-pre-ram;
> +};

These should be upstreamed and are not u-boot specific.

[snip]
> diff --git a/board/freescale/imx91_frdm/imx91_frdm.c b/board/freescale/imx91_frdm/imx91_frdm.c
> new file mode 100644
> index 0000000000000000000000000000000000000000..28201a8d62207672c837a34e8619ca9ef4638ed0
> --- /dev/null
> +++ b/board/freescale/imx91_frdm/imx91_frdm.c
> @@ -0,0 +1,28 @@
> +// SPDX-License-Identifier: GPL-2.0+
> +/*
> + * Copyright 2025 NXP
> + */
> +
> +#include <env.h>
> +#include <init.h>
> +#include <miiphy.h>
> +#include <netdev.h>
> +#include <asm/arch/sys_proto.h>
> +
> +int board_late_init(void)
> +{
> +#ifdef CONFIG_ENV_IS_IN_MMC
> +	board_late_mmc_env_init();
> +#endif
> +
> +	env_set("sec_boot", "no");
> +#ifdef CONFIG_AHAB_BOOT
> +	env_set("sec_boot", "yes");
> +#endif
> +
> +#ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
> +	env_set("board_name", "11X11_FRDM");
> +	env_set("board_rev", "iMX91");
> +#endif
> +	return 0;
> +}

There are extraneous includes here, please fix and recheck the rest of
the files too.

[snip]
> diff --git a/configs/imx91_11x11_frdm_inline_ecc_defconfig b/configs/imx91_11x11_frdm_inline_ecc_defconfig
> new file mode 100644
> index 0000000000000000000000000000000000000000..b1daad00c24aff1628c76aa06cbdf7d8c498ab9c
> --- /dev/null
> +++ b/configs/imx91_11x11_frdm_inline_ecc_defconfig
> @@ -0,0 +1,143 @@
> +CONFIG_ARM=y
> +CONFIG_ARCH_IMX9=y

This should make use of #include to avoid having to keep them in sync,
and make sure that buildman can still build them both when done (or CI
will fail).

> diff --git a/doc/board/nxp/imx91_frdm.rst b/doc/board/nxp/imx91_frdm.rst
> new file mode 100644
> index 0000000000000000000000000000000000000000..04780f1d8db693f8a32c0bf293d59454862166da
> --- /dev/null
> +++ b/doc/board/nxp/imx91_frdm.rst
> @@ -0,0 +1,99 @@
> +.. SPDX-License-Identifier: GPL-2.0+
> +
> +imx91_frdm
> +=======================

Please see the docs on building the documentation, this and likely other
style errors will fail in CI.

Thanks!

-- 
Tom
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