i.MX LPDDR4 Firmware

[Heiko Thiery]

 Hi Marcel,

Am Di., 19. Okt. 2021 um 11:47 Uhr schrieb Marcel Ziswiler
<marcel.ziswiler at toradex.com>:
>
> Hi Heiko
>
> On Mon, 2021-10-18 at 11:23 +0200, Heiko Thiery wrote:
> > Hi all,
> >
> > I see that in the NXP firmware-imx package different versions of the
> > LPDDR4 train firmware is included but I cannot find a Release Note or
> > something else that describes the differences. Does anyone know what
> > is the correct version to be used?
>
> Doesn't it depend on which generation of MScale one is using?
>
> Anyway, from NXP's user guide [1]:
>
> For i.MX 8M Quad and i.MX 8M Mini LPDDR4 EVK, copy lpddr4_pmu_train_1d_dmem.bin,
> lpddr4_pmu_train_1d_imem.bin, lpddr4_pmu_train_2d_dmem.bin, and lpddr4_pmu_train_2d_imem.bin from
> firmware/ddr/synopsys of firmware-imx package to imx-mkimage/iMX8M/.
>
> For i.MX 8M Mini DDR4 EVK, copy ddr4_imem_1d.bin, ddr4_dmem_1d.bin, ddr4_imem_2d.bin, and ddr4_dmem_2d.bin
> from firmware/ddr/synopsys of firmware-imx package to imx-mkimage/iMX8M.
>
> For i.MX 8M Plus LPDDR4 EVK, copy lpddr4_pmu_train_1d_dmem_201904.bin, lpddr4_pmu_train_1d_imem_201904.bin,
> lpddr4_pmu_train_2d_dmem_201904.bin, and lpddr4_pmu_train_2d_imem_201904.bin from firmware/ddr/synopsys of
> firmware-imx package to imx-mkimage/iMX8M/.

Ok, I didn't even notice that and I just wanted to make sure I was
using the right ones here. Maybe someone can tell us the use case for
the "*_202006.bin" files.

> So their latest documentation does not even mention the later firmware available!
>
> > Here is the content of the latest NXP release:
> > lpddr4_pmu_train_1d_dmem_201904.bin
> > lpddr4_pmu_train_1d_dmem_202006.bin
> > lpddr4_pmu_train_1d_dmem.bin
> > lpddr4_pmu_train_1d_imem_201904.bin
> > lpddr4_pmu_train_1d_imem_202006.bin
> > lpddr4_pmu_train_1d_imem.bin
> > lpddr4_pmu_train_2d_dmem_201904.bin
> > lpddr4_pmu_train_2d_dmem_202006.bin
> > lpddr4_pmu_train_2d_dmem.bin
> > lpddr4_pmu_train_2d_imem_201904.bin
> > lpddr4_pmu_train_2d_imem_202006.bin
> > lpddr4_pmu_train_2d_imem.bin
>
> [1] https://www.nxp.com/docs/en/user-guide/IMX_LINUX_USERS_GUIDE.pdf
>
> > Thanks
>
> Cheers

Thanks,

Heiko