On Mon, Jan 19, 2026 at 04:24:37PM +0100, Marco Felsch wrote: > Hi Fabian, > > please see below. > > On 26-01-19, Fabian Pfitzner wrote: > > The FRDM-i.MX8MP is an NXP development platform based on the i.MX8M Plus > > SoC, featuring a quad Cortex-A53, Cortex-M7 co-processor, 4GB LPDDR4, > > 32GB eMMC, Wi-Fi 6/Bluetooth 5.4/802.15.4 tri-radio, Ethernet, HDMI/MIPI > > display interfaces, camera connectors, and standard expansion headers. > > > > The DRAM timings were taken from [1]. > > Furthermore, the board code was mainly taken from the imx8mp-evk. > > > > [1] [email protected]:nxp-imx/uboot-imx.git branch lf_v2025.04 > > > > Signed-off-by: Fabian Pfitzner <[email protected]> > > --- > > arch/arm/boards/Makefile | 1 + > > arch/arm/boards/nxp-imx8mp-frdm/Makefile | 4 + > > arch/arm/boards/nxp-imx8mp-frdm/board.c | 36 + > > .../flash-header-imx8mp-frdm.imxcfg | 10 + > > arch/arm/boards/nxp-imx8mp-frdm/lowlevel.c | 145 +++ > > arch/arm/boards/nxp-imx8mp-frdm/lpddr4-timing.c | 1119 > > ++++++++++++++++++++ > > arch/arm/configs/imx_v8_defconfig | 1 + > > arch/arm/configs/multi_v8_defconfig | 1 + > > arch/arm/mach-imx/Kconfig | 10 + > > images/Makefile.imx | 2 + > > 10 files changed, 1329 insertions(+) > > > > diff --git a/arch/arm/boards/Makefile b/arch/arm/boards/Makefile > > index > > f73285ede9d3ea0b7ea04f7a984fce0e796f9f73..71b26713f10ec4b617070015463c1e122ddc550a > > 100644 > > --- a/arch/arm/boards/Makefile > > +++ b/arch/arm/boards/Makefile > > @@ -73,6 +73,7 @@ obj-$(CONFIG_MACH_NXP_IMX8MQ_EVK) += > > nxp-imx8mq-evk/ > > obj-$(CONFIG_MACH_NXP_IMX8MM_EVK) += nxp-imx8mm-evk/ > > obj-$(CONFIG_MACH_NXP_IMX8MN_EVK) += nxp-imx8mn-evk/ > > obj-$(CONFIG_MACH_NXP_IMX8MP_EVK) += nxp-imx8mp-evk/ > > +obj-$(CONFIG_MACH_NXP_IMX8MP_FRDM) += nxp-imx8mp-frdm/ > > obj-$(CONFIG_MACH_NXP_IMX93_FRDM) += nxp-imx93-frdm/ > > obj-$(CONFIG_MACH_CONGATEC_QMX8P_SOM) += congatec-qmx8p/ > > obj-$(CONFIG_MACH_TQ_MBA8MPXL) += tqma8mpxl/ > > diff --git a/arch/arm/boards/nxp-imx8mp-frdm/Makefile > > b/arch/arm/boards/nxp-imx8mp-frdm/Makefile > > new file mode 100644 > > index > > 0000000000000000000000000000000000000000..35d8640087b1d6d12201d2bcb5aacc76b03f140e > > --- /dev/null > > +++ b/arch/arm/boards/nxp-imx8mp-frdm/Makefile > > @@ -0,0 +1,4 @@ > > +# SPDX-License-Identifier: GPL-2.0-only > > + > > +obj-y += board.o > > +lwl-y += lowlevel.o lpddr4-timing.o > > diff --git a/arch/arm/boards/nxp-imx8mp-frdm/board.c > > b/arch/arm/boards/nxp-imx8mp-frdm/board.c > > new file mode 100644 > > index > > 0000000000000000000000000000000000000000..914d16e3b5c82d1e4b9dbe700af9061be079b2e2 > > --- /dev/null > > +++ b/arch/arm/boards/nxp-imx8mp-frdm/board.c > > @@ -0,0 +1,36 @@ > > +// SPDX-License-Identifier: GPL-2.0 > > +/* > > + * Copyright (C) 2026 Fabian Pfitzner, Pengutronix > > + */ > > + > > +#include <asm/memory.h> > > +#include <bootsource.h> > > +#include <common.h> > > +#include <deep-probe.h> > > +#include <init.h> > > +#include <linux/phy.h> > > +#include <linux/sizes.h> > > +#include <mach/imx/bbu.h> > > +#include <mach/imx/iomux-mx8mp.h> > > +#include <gpio.h> > > +#include <envfs.h> > > + > > +static int nxp_imx8mp_frdm_probe(struct device *dev) > > +{ > > + imx8m_bbu_internal_mmcboot_register_handler("eMMC", "/dev/mmc2", > > BBU_HANDLER_FLAG_DEFAULT); > > @Ahmad @Sascha > > Do we have a proper driver for the bbu? In that case we could drop the > whole board.c :-)
No we don't have that yet. Would be nice to have, but requires some thinking. I think this would require yet another barebox specific device tree binding which is not a nice thing to have. Sascha -- Pengutronix e.K. | | Steuerwalder Str. 21 | http://www.pengutronix.de/ | 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
