[U-Boot] [PATCH v2 00/24] omap_hsmmc: Add support for HS200 and UHS modes

[Jean-Jacques Hiblot]

On 29/01/2018 05:45, Lokesh Vutla wrote:
>
> On Thursday 25 January 2018 04:21 PM, Jean-Jacques Hiblot wrote:
>> This series adds the missing bits to enable the UHS and HS200 modes
>> for the TI platforms.
> For my understanding, these patches enable HS modes only in U-Boot
> proper or in SPL also?
Enabling the HS200/UHS in SPL requires  a few additional DTS changes. It 
also require that several DTBs are included in the SPL because of the 
IOdelays/PAD config. I'll post a series for this when this one is merged.

JJ
>
> Thanks and regards,
> Lokesh
>
>> Enabling support for high speed modes on omap5 requires implementing:
>>   * io signal voltage selection
>>   * tuning support
>>   * pin configuration (IO delays)
>>
>> The few last patches enable the high speed modes for the DRA7 platforms and
>> also take care of disabling those modes in the dts for the platforms that
>> cannot support either the UHS or the HS200 because the voltage regulators
>> on board would not allow using those modes (not a SOC limitation).
>>
>> With this in place we observe significant improvements in the performances:
>> on a DRA72 evm:
>> eMMC HS200: 124 MB/s
>> eMMC DDR52: 78 MB/s
>> sd   SDR104: 71 MB/s
>> sd   SDR50: 44 MB/s
>> For the record, the original performances were:
>> SD High speed: 18 MB/s
>> MMC High speed: 18 MB/s
>>
>> This series has been tested on:
>> * DRA71-evm
>> * DRA72-evm
>> * DRA7x-evm
>> * DRA76-evm
>> * AM57x-evm
>> * Beaglebone Black (dt and non-dt)
>>
>> changes since v1:
>>   - rebased on top of u-boot/master
>>   - enable the H200 and UHS support in the defconfigs of the DRA7 platforms
>>
>>
>>
>> Jean-Jacques Hiblot (9):
>>    mmc: omap_hsmmc: Reduce the max timeout for reset controller fsm
>>    mmc: omap_hsmmc: allow the simple HS modes to use the default pinctrl
>>    mmc: omap_hsmmc: update mmc->clock with the actual bus speed
>>    mmc: omap_hsmmc: implement send_init_stream callback
>>    mmc: omap_hsmmc: add signal voltage selection support
>>    ARM: dts: dra7: Add supported MMC/SD modes in MMC dt nodes
>>    dts: am57xx-beagle-x15: disable UHS and HS200 support
>>    dts: am57xx-idk: disable HS200 support
>>    configs: dra7xx_evm/dra7xx_hs_evm: Enable MMC HS200 and SD UHS support
>>
>> Kishon Vijay Abraham I (15):
>>    mmc: omap_hsmmc: cleanup clock configuration
>>    mmc: omap_hsmmc: cleanup omap_hsmmc_set_ios
>>    mmc: omap_hsmmc: add support to set default io voltage
>>    mmc: omap_hsmmc: set MMC mode in the UHSMS bit field
>>    mmc: omap_hsmmc: Enable DDR mode support
>>    mmc: omap_hsmmc: Add tuning support
>>    mmc: omap_hsmmc: Workaround for errata id i802
>>    mmc: omap_hsmmc: use mmc_of_parse to populate mmc_config
>>    ARM: OMAP5/DRA7: Enable iodelay recalibration to be done from uboot
>>    mmc: omap_hsmmc: Add support to set IODELAY values
>>    mmc: omap_hsmmc: Add support to get pinctrl values and max frequency
>>      for different hw revisions
>>    mmc: omap_hsmmc: allow mmc clock to be gated
>>    ARM: OMAP5: set mmc clock frequency to 192MHz
>>    ARM: dts: DRA7: use new dra7-specific compatible string
>>    ARM: DRA7x/AM57x: Add MMC/SD fixups for rev1.0 and rev 1.1
>>
>>   arch/arm/dts/am57xx-beagle-x15.dts               |   6 +
>>   arch/arm/dts/am57xx-idk-common.dtsi              |   2 +
>>   arch/arm/dts/dra7.dtsi                           |  22 +-
>>   arch/arm/include/asm/arch-omap5/clock.h          |   2 +-
>>   arch/arm/include/asm/arch-omap5/dra7xx_iodelay.h |   3 +
>>   arch/arm/include/asm/arch-omap5/sys_proto.h      |   7 +
>>   arch/arm/include/asm/omap_mmc.h                  |  59 +-
>>   arch/arm/mach-omap2/omap5/dra7xx_iodelay.c       |  30 +
>>   arch/arm/mach-omap2/omap5/hw_data.c              |  10 +-
>>   board/ti/am57xx/board.c                          |  30 +
>>   board/ti/dra7xx/evm.c                            |  29 +
>>   configs/dra7xx_evm_defconfig                     |   3 +
>>   configs/dra7xx_hs_evm_defconfig                  |   3 +
>>   drivers/mmc/omap_hsmmc.c                         | 948 +++++++++++++++++++++--
>>   include/configs/am57xx_evm.h                     |   2 -
>>   include/configs/dra7xx_evm.h                     |   2 -
>>   16 files changed, 1085 insertions(+), 73 deletions(-)
>>