[PATCH 0/4] OMAP-GPMC generic timing migration

Daniel Mack zonque at gmail.com
Thu Oct 11 07:45:42 EDT 2012


On 05.10.2012 18:00, Afzal Mohammed wrote:
> This series provides a generic gpmc timing calculation routine. There
> were three peripherals (OneNAND, tusb6010, smc91x) using custom timing
> calculations, they are migrated to use the generic timing calculation.
> Such a generic routine would help create a driver out of gpmc platform
> code, which would be peripheral agnostic and thus lead to DT finally.
> Input to generic timing calculation routine would be gpmc peripheral
> timings, output - translated timings that gpmc can understand. Later,
> to DT'ify, gpmc peripheral timings could be passed through DT. Input
> timings that has been used here are selected such that it represents
> those that are present in peripheral timing datasheets.

Admittedly, I lost track on the multiple GPMC series here, and they also
cause major merge conflicts with Linus' current master branch.

Could you tell me which patches I need on top of soon-to-be-3.7-rc1? I
would like to augment this to make GPMC attached NAND probable in DT, in
case this is still an open topic.

Thanks for you hard work,

> This series has been created by pulling out last 4 patches in v7
> of the series,
> "OMAP-GPMC: generic time calc, prepare for driver"
> This was done to have easy path for common zImage gpmc cleanup patches.
> Proposed generic routine has been tested on OneNAND (async) on
> OMAP3EVM rev C (as mainline does not have the OneNAND support for this,
> local patch were used to test). For other cases of custom timing
> calculation (tusb6010, smc91x non-muxed, OneNAND sync), generic timing
> calculation routine was verified by simulating on OMAP3EVM.
> This series is available
>         @ git://gitorious.org/x0148406-public/linux-kernel.git gpmc-timing-v1
> and is based on
>         linux-next (next-20121005)
> and is dependent on
> 	http://marc.info/?l=linux-omap&m=134945131602622&w=2
> 	http://marc.info/?l=linux-omap&m=134945239306131&w=2
> This series as such is only the first version, but these patches has
> already undergone one change before being made as this series. The
> change was in using ps instead of ns to prevent rounding errors.
> Also along with this series documentation has been improved.
> Regards
> Afzal
> Afzal Mohammed (4):
>   ARM: OMAP2+: gpmc: generic timing calculation
>   ARM: OMAP2+: onenand: generic timing calculation
>   ARM: OMAP2+: smc91x: generic timing calculation
>   ARM: OMAP2+: tusb6010: generic timing calculation
>  Documentation/bus-devices/ti-gpmc.txt | 122 +++++++++++++
>  arch/arm/mach-omap2/gpmc-onenand.c    | 124 +++++--------
>  arch/arm/mach-omap2/gpmc-smc91x.c     |  43 ++---
>  arch/arm/mach-omap2/gpmc.c            | 325 ++++++++++++++++++++++++++++++++++
>  arch/arm/mach-omap2/gpmc.h            | 102 ++++++++---
>  arch/arm/mach-omap2/usb-tusb6010.c    | 182 +++++--------------
>  6 files changed, 633 insertions(+), 265 deletions(-)
>  create mode 100644 Documentation/bus-devices/ti-gpmc.txt

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