This patch set makes use of the dynamic DDR calibration routines added in commit
d339f16 to define an alternative to the Freescale DDR stress tester tool.
The goals of this effort are to make the process of DDR validation easier
and more robust:
- The use of SPL simplifies the process of running DDR calibration
through the imx_usb or SB_LOADER.exe tools (no need for JTAG)
- The use of Kconfig makes the set of board-specific parameters
more obvious.
- The output of the SPL image can be directly pasted into either the DCD
configuration file or U-Boot sources.
The notable feature of the DDR stress tool which isn't present in this virtual
board file is the testing across CPU frequencies.
Patches 1-3 contain structural changes to those routines to return the
calibration data and allow configuration of memory without a pre-defined
set of calibration data.
Patches 4 and 5 add a struct mx6_ddr_sysinfo parameter to the calibration
routines and use it to fix the use of the calibration routines on CPU
variants which don't have two MMDC ports (tested on i.MX6SL).
Patches 6-7 simplify the selection of the DDR calibration routines and
allow use on other CPU variants (again, tested on i.MX6SL).
Patch 8 is the meat of the patch set and defines the board itself and
a single configuration sample that can be used on mx6sabresd or mx6qsabreauto.
Patches 9-12 define a set of other configurations to match other boards that
I've tested during development. Note that the configurations with LPDDR
(mx6slevk
and WaRP) are not currently functional.
I believe that patches 1-7 are minor and can be applied after a short
review, but the patch set is an RFC because of some fundamental questions:
- Is it okay with Freescale that I'm the maintainer for a board
in the board/freescale tree? I don't particularly want to be the
maintainer of this set of tools, but I want them, so I will try
to maintain those portions that I'm in a position to test.
- What about the board name? Though I haven't looked deeply at it,
but I think that some of this code could be shared with i.MX7.
- I'm including some configurations for boards that don't currently
function (mx6slevk) or haven't been tested (warp) for reference and
further updates. I'm also including a configuration for a board that
isn't supported in main-line U-Boot (nitrogen6_max).
Eric Nelson (12):
imx: mx6: ddr: return output of calibration routines
novena: supply calibration parameter to DDR calibration routines
imx: mx6: ddr: make calibration optional in config routines
imx: mx6: ddr: pass sysinfo to calibration routines
novena: pass mx6_ddr_sysinfo to calibration routines
imx: mx6: ddr: use Kconfig for inclusion of DDR calibration
novena_defconfig: select MX6_DDRCAL
mx6: Add board mx6memcal for use in validating DDR
mx6memcal: add configuration mx6memcal_mx6slevk_defconfig
mx6memcal: add configuration mx6memcal_nitrogen6_max_defconfig
mx6memcal: add configuration mx6memcal_sabrelite_defconfig
mx6memcal: add configuration mx6memcal_warpboard_defconfig
arch/arm/cpu/armv7/mx6/Kconfig | 14 +
arch/arm/cpu/armv7/mx6/ddr.c | 174 +++++++-----
arch/arm/include/asm/arch-mx6/mx6-ddr.h | 8 +-
board/freescale/mx6memcal/Kconfig | 135 +++++++++
board/freescale/mx6memcal/MAINTAINERS | 7 +
board/freescale/mx6memcal/Makefile | 13 +
board/freescale/mx6memcal/mx6memcal.c | 31 +++
board/freescale/mx6memcal/spl.c | 449 ++++++++++++++++++++++++++++++
board/kosagi/novena/novena_spl.c | 4 +-
configs/mx6memcal_defconfig | 30 ++
configs/mx6memcal_mx6slevk_defconfig | 30 ++
configs/mx6memcal_nitrogen6_max_defconfig | 26 ++
configs/mx6memcal_sabrelite_defconfig | 27 ++
configs/mx6memcal_warpboard_defconfig | 32 +++
configs/novena_defconfig | 1 +
include/configs/mx6memcal.h | 65 +++++
16 files changed, 976 insertions(+), 70 deletions(-)
create mode 100644 board/freescale/mx6memcal/Kconfig
create mode 100644 board/freescale/mx6memcal/MAINTAINERS
create mode 100644 board/freescale/mx6memcal/Makefile
create mode 100644 board/freescale/mx6memcal/mx6memcal.c
create mode 100644 board/freescale/mx6memcal/spl.c
create mode 100644 configs/mx6memcal_defconfig
create mode 100644 configs/mx6memcal_mx6slevk_defconfig
create mode 100644 configs/mx6memcal_nitrogen6_max_defconfig
create mode 100644 configs/mx6memcal_sabrelite_defconfig
create mode 100644 configs/mx6memcal_warpboard_defconfig
create mode 100644 include/configs/mx6memcal.h
--
2.7.4
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