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 _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot