[v3 12/17] ddr: altera: Add SDRAM driver for Intel N5X device

[Ley Foon Tan]

On Sun, Jun 13, 2021 at 4:49 PM Siew Chin Lim
<elly.siew.chin.lim at intel.com> wrote:
>
> From: Tien Fong Chee <tien.fong.chee at intel.com>
>
> The DDR subsystem in Diamond Mesa is consisted of controller, PHY,
> memory reset manager and memory clock manager.
>
> Configuration settings of controller, PHY and  memory reset manager
> is come from DDR handoff data in bitstream, which contain the register
> base addresses and user settings from tool.
>
> Configuration settings of memory clock manager is come from the HPS
> handoff data in bitstream, however the register base address is defined
> in device tree.
>
> The calibration is fully done in HPS, which requires IMEM and DMEM
> binaries loading to PHY SRAM for running this calibration, both
> IMEM and DMEM binaries are also part of bitstream, this bitstream
> would be loaded to OCRAM by SDM, and configured by DDR driver.
>
> Signed-off-by: Siew Chin Lim <elly.siew.chin.lim at intel.com>
> Signed-off-by: Tien Fong Chee <tien.fong.chee at intel.com>
>
> ---
> v3:
> - Sorting header
> - Used prefix OPM_xxx
> - Simplify the code with do...while loop.
> - Created common function for processing handoff
> - Adding function of calibration data feedback to LPDDR4 controllers
>
> v2:
> - Move is_ddr_init_skipped and its helper functions to DDR driver and
>   converted function to positive checking
> - Using GENMASK() macro
> - Fixed typo
> - Return status of subfunction
> - Changed dm to n5x
> ---
>  arch/arm/mach-socfpga/include/mach/firewall.h |    6 +
>  .../include/mach/system_manager_soc64.h       |   10 +-
>  drivers/ddr/altera/Makefile                   |    3 +-
>  drivers/ddr/altera/sdram_n5x.c                | 2298 +++++++++++++++++
>  drivers/ddr/altera/sdram_soc64.c              |   70 +
>  drivers/ddr/altera/sdram_soc64.h              |    1 +
>  6 files changed, 2386 insertions(+), 2 deletions(-)
>  create mode 100644 drivers/ddr/altera/sdram_n5x.c
>

Reviewed-by: Ley Foon Tan <lftan.linux at gmail.com>

Regards
Ley Foon