diff options
| author | Ricky WU <ricky_wu@realtek.com> | 2022-03-02 09:43:01 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-05-12 12:20:26 +0200 |
| commit | 98c790eabed727d0f435ea71f72174b261c208c1 (patch) | |
| tree | aca5f9f2c98bb4f564405069e47378f0582ab8c7 /fs/sysfs | |
| parent | 8dfd365c37f5fda783a77cb857b47c8e4204e104 (diff) | |
mmc: rtsx: add 74 Clocks in power on flow
commit 1f311c94aabdb419c28e3147bcc8ab89269f1a7e upstream.
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>
Signed-off-by: Christian Loehle <cloehle@hyperstone.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/sysfs')
0 files changed, 0 insertions, 0 deletions