[U-Boot] [PATCH] armv8/fsl-layerscape: add IFC fixup for LS1043A with QSPI enabled

[Qianyu Gong]

Hi all,

Any comments about this patch? Thanks!

Regards,
Qianyu

> -----Original Message-----
> From: Gong Qianyu [mailto:Qianyu.Gong at nxp.com]
> Sent: Monday, February 22, 2016 6:05 PM
> To: u-boot at lists.denx.de; york sun <york.sun at nxp.com>; oss at buserror.net
> Cc: Mingkai Hu <mingkai.hu at nxp.com>; Qianyu Gong <qianyu.gong at nxp.com>
> Subject: [PATCH] armv8/fsl-layerscape: add IFC fixup for LS1043A with QSPI
> enabled
> 
> QSPI and IFC are pin-multiplexed on LS1043A. So if QSPI is enabled,
> IFC should be disabled.
> But just disable IFC driver in LS1043A Linux is not enough because
> mdio-mux will access IFC address space -- actually it accesses FPGA
> which is connected to IFC CS3. So disable the whole IFC node in
> Linux device tree.
> 
> Signed-off-by: Gong Qianyu <Qianyu.Gong at nxp.com>
> 
> diff --git a/arch/arm/cpu/armv8/fsl-layerscape/fdt.c b/arch/arm/cpu/armv8/fsl-
> layerscape/fdt.c
> index 4e4861d..5bb3048 100644
> --- a/arch/arm/cpu/armv8/fsl-layerscape/fdt.c
> +++ b/arch/arm/cpu/armv8/fsl-layerscape/fdt.c
> @@ -204,4 +204,11 @@ void ft_cpu_setup(void *blob, bd_t *bd)
>  #ifdef CONFIG_FSL_LSCH3
>  	fdt_fixup_smmu(blob);
>  #endif
> +
> +#ifdef CONFIG_LS1043A
> +#ifdef CONFIG_FSL_QSPI
> +	do_fixup_by_compat(blob, "fsl,ifc",
> +			   "status", "disabled", 8 + 1, 1);
> +#endif
> +#endif
>  }
> --
> 2.1.0.27.g96db324