lkml.org 
[lkml]   [2021]   [Jan]   [13]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Date
SubjectRe: [PATCH 1/2] mmc: rtsx: add delay before power on
On Wed, 13 Jan 2021 at 11:57, <ricky_wu@realtek.com> wrote:
>
> From: Ricky Wu <ricky_wu@realtek.com>
>
> Make sure voltage below 0.5V before power on
> when do power cycle
> At mmc-core recognition card phase will do
> power cycle quickly so our device need at least 100ms
> to make voltage down to below 0.5V
>
> Signed-off-by: Ricky Wu <ricky_wu@realtek.com>

Applied for next, by amending the changelog a bit, thanks!

Kind regards
Uffe


> ---
> drivers/mmc/host/rtsx_pci_sdmmc.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/drivers/mmc/host/rtsx_pci_sdmmc.c b/drivers/mmc/host/rtsx_pci_sdmmc.c
> index e6f5bbce5685..0e5043a03965 100644
> --- a/drivers/mmc/host/rtsx_pci_sdmmc.c
> +++ b/drivers/mmc/host/rtsx_pci_sdmmc.c
> @@ -906,6 +906,8 @@ static int sd_power_on(struct realtek_pci_sdmmc *host)
> if (host->power_state == SDMMC_POWER_ON)
> return 0;
>
> + msleep(100);
> +
> rtsx_pci_init_cmd(pcr);
> rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_SELECT, 0x07, SD_MOD_SEL);
> rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_SHARE_MODE,
> --
> 2.17.1
>

\
 
 \ /
  Last update: 2021-01-13 14:09    [W:0.036 / U:0.056 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site