Hi Ulf, On 2017-05-09 00:09, Ulf Hansson wrote:
In case if a pwrseq-emmc has been bound to the host, a call to mmc_power_up() triggers an eMMC HW reset via the pwrseq_emmc's ->post_power_on() callback. This isn't really what we want, as mmc_power_up() is called each time when resuming the card. Let's fix this behaviour and avoid doing the emmc HW reset unless really needed. Ulf Hansson (2): mmc: pwrseq: Add reset callback to the struct mmc_pwrseq_ops mmc: core: Don't do eMMC HW reset when resuming the eMMC card
Works fine on Odroid U3 with eMMC (tested suspend/resume cycle and reboot). Tested-by: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>
drivers/mmc/core/core.c | 2 ++ drivers/mmc/core/mmc.c | 2 ++ drivers/mmc/core/pwrseq.c | 8 ++++++++ drivers/mmc/core/pwrseq.h | 3 +++ drivers/mmc/core/pwrseq_emmc.c | 2 +- 5 files changed, 16 insertions(+), 1 deletion(-)
Best regards -- Marek Szyprowski, PhD Samsung R&D Institute Poland -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
