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    SubjectRE: [PATCH 4.6 143/203] memory: omap-gpmc: Fix omap gpmc EXTRADELAY timing
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    -----Message d'origine-----
    De : Greg Kroah-Hartman [mailto:gregkh@linuxfoundation.org]
    Envoyé : lundi 25 juillet 2016 22:56
    À : linux-kernel@vger.kernel.org
    Cc : Greg Kroah-Hartman; stable@vger.kernel.org; Ocquidant, Sebastien; Roger Quadros
    Objet : [PATCH 4.6 143/203] memory: omap-gpmc: Fix omap gpmc EXTRADELAY timing

    4.6-stable review patch. If anyone has any objections, please let me know.

    ------------------

    From: Ocquidant, Sebastien <sebastienocquidant@eaton.com>

    commit 8f50b8e57442d28e41bb736c173d8a2490549a82 upstream.

    In the omap gpmc driver it can be noticed that GPMC_CONFIG4_OEEXTRADELAY is overwritten by the WEEXTRADELAY value from the device tree and GPMC_CONFIG4_WEEXTRADELAY is not updated by the value from the device tree.

    As a consequence, the memory accesses cannot be configured properly when the extra delay are needed for OE and WE.

    Fix the update of GPMC_CONFIG4_WEEXTRADELAY with the value from the device tree file and prevents GPMC_CONFIG4_OEXTRADELAY being overwritten by the WEXTRADELAY value from the device tree.

    Signed-off-by: Ocquidant, Sebastien <sebastienocquidant@eaton.com>
    Signed-off-by: Roger Quadros <rogerq@ti.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    drivers/memory/omap-gpmc.c | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    --- a/drivers/memory/omap-gpmc.c
    +++ b/drivers/memory/omap-gpmc.c
    @@ -394,7 +394,7 @@ static void gpmc_cs_bool_timings(int cs,
    gpmc_cs_modify_reg(cs, GPMC_CS_CONFIG4,
    GPMC_CONFIG4_OEEXTRADELAY, p->oe_extra_delay);
    gpmc_cs_modify_reg(cs, GPMC_CS_CONFIG4,
    - GPMC_CONFIG4_OEEXTRADELAY, p->we_extra_delay);
    + GPMC_CONFIG4_WEEXTRADELAY, p->we_extra_delay);
    gpmc_cs_modify_reg(cs, GPMC_CS_CONFIG6,
    GPMC_CONFIG6_CYCLE2CYCLESAMECSEN,
    p->cycle2cyclesamecsen);
    ========================================================================================
    Hi Greg,

    OK for me

    Sébastien Ocquidant
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