4.5-rc1 kernel is failed to bootup on FSL LS2080 RDB board

[Bhupesh Sharma]

Hi,

> From: Shi, Yang
> Sent: Wednesday, January 27, 2016 5:33 AM

> Hi folks,
> 
> I tried to boot 4.5-rc1 kernel on my FSL LS2080 RDB (aka LS2085 RDB), but
> it is failed silently. If I use the dtb file shipped with the SDK with
> 4.5-rc1 kernel, I can get the serial console output, but it is failed to
> detect PCI bus.
> 
> If I use both kernel and dtb from the SDK, it works well.
> 
> The bootloader information:
> 
> U-Boot 2015.07-rc1Layerscape2-SDK+g7e8bad0 (Aug 27 2015 - 14:31:42)
> 
> SoC:  LS2085E (0x87010010)
> Clock Configuration:
>         CPU0(A57):1600 MHz  CPU1(A57):1600 MHz  CPU2(A57):1600 MHz
>         CPU3(A57):1600 MHz  CPU4(A57):1600 MHz  CPU5(A57):1600 MHz
>         CPU6(A57):1600 MHz  CPU7(A57):1600 MHz
>         Bus:      600  MHz  DDR:      1333.333 MT/s     DP-DDR:
> 1333.333 MT/s
> Reset Configuration Word (RCW):
>         00: 40282830 40400040 00000000 00000000
>         10: 00000000 00200000 00200000 00000000
>         20: 00c12980 00002580 00000000 00000000
>         30: 00000e0b 00000000 00000000 00000000
>         40: 00000000 00000000 00000000 00000000
>         50: 00000000 00000000 00000000 00000000
>         60: 00000000 00000000 00027000 00000000
>         70: 412a0000 00000000 00000000 00000000
> Model: Freescale Layerscape 2085a RDB Board
> Board: LS2085E-RDB, Board Arch: V1, Board version: D, boot from vBank: 4
> FPGA: v1.18
> 
> And, I have ARCH_LAYERSCAPE, CONFIG_PCIE_DW and CONFIG_PCI_LAYERSCAPE
> enabled.
> 
> Any hint is appreciated.
> 

As Minghuan (our PCI developer, added in CC) suggested the reason is that uboot is for
LS2085a but kernel dtb is for ls2080.

Please apply the patch https://patchwork.kernel.org/patch/7767061/ and try again.

Regards,
Bhupesh