Hi Tim,
On 08/05/14 08:16, Tim Harvey wrote:
Add memory-mapped structures for MMDC iomux and configuration. Note that the MMDC configuration registers are common between the IMX6DQ (IMX6DUAL/IMX6QUAD) and IMX6SDL (IMX6SOLO/IMX6DUALLITE) the iomux register addresses differ. This requires two sets of structures.
Add structures to describe DDR3 device information, system information (memory layout, etc), and MMDC calibration regitsers that can be used to configure the MMDC dynamically.
s/regitsers/registers
We define these structures for SPL builds instead of including mx6q-ddr.h an mx6dl-ddr.h which use the same namespace and are only useful for imximage cf files.
What about the usefulness of the structs for U-Boot code? For example, it might be necessary for U-Boot code to query the MMDC registers to setup memory related variables like gd->ram_size and gd->bd->bi_dram[i].size. Sure this can be done using the #defines in the header files, but we lose nothing by making the structs available to U-Boot as well.