tree 78130b3082f1e8f25c80f0a1651afe0265585aac
parent e4d39a0e3fb503d1abce9fd2c0e9660c166aa42a
author Ye Li <ye.li@nxp.com> 1591689546 -0700
committer Stefano Babic <sbabic@denx.de> 1594891183 +0200

spi: fsl_qspi: Support to use full AHB space on i.MX

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>