[PATCH 2/2] spi: fsl_qspi: Support to use full AHB space on i.MX

[sbabic at denx.de <sbabic@denx.de>]

> i.MX platforms provide large AHB mapped space for QSPI, each
> controller has 256MB. However, current driver only maps small
> size (AHB buffer size) of AHB space, this implementation
> causes i.MX failed to boot M4 with QSPI XIP image.
> Add config CONFIG_FSL_QSPI_AHB_FULL_MAP (default enabled for i.MX)
> to address above problem.
> When the config is set:
> 1. Full AHB space is divided to each CS.
> 2. A dedicated LUT entry is used for AHB read only.
> 3. The MODE instruction in LUT is replaced to standard ADDR instruction
> 4. The address in spi_mem_op is used to SFAR and AHB read
> Signed-off-by: Ye Li <ye.li@nxp.com>
> Reviewed-by: Ashish Kumar <Ashish.Kumar@nxp.com>
> Reviewed-by: Kuldeep Singh <kuldeep.singh@nxp.com>
Applied to u-boot-imx, master, thanks !

Best regards,
Stefano Babic

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