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| /openbmc/linux/drivers/mmc/host/ |
| H A D | rtsx_pci_sdmmc.c | 1f311c94 Wed Mar 02 03:43:01 CST 2022 Ricky WU <ricky_wu@realtek.com> mmc: rtsx: add 74 Clocks in power on flow
SD spec definition:
"Host provides at least 74 Clocks before issuing first command"
After 1ms for the voltage stable then start issuing the Clock signals
if POWER STATE is
MMC_POWER_OFF to MMC_POWER_UP to issue Clock signal to card
MMC_POWER_UP to MMC_POWER_ON to stop issuing signal to card
Signed-off-by: Ricky Wu <ricky_wu@realtek.com>
Link: https://lore.kernel.org/r/1badf10aba764191a1a752edcbf90389@realtek.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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