On 5/10/2021 11:14 AM, Ulf Hansson wrote:
On Mon, 10 May 2021 at 09:37, Arend Van Spriel
<arend.vanspriel@xxxxxxxxxxxx> wrote:
+ Uffe
On 5/10/2021 12:42 AM, Linus Walleij wrote:
This grabs the reset GPIO and holds it de-asserted, if available.
Asserting this signal will make the SDIO card re-enumerate.
looks ok to me, but could this also be done through SDIO power sequence
stuff?
Yes, it certainly looks like that to me. It should be the mmc
host/core that manages the power on/off thingy for the SDIO card.
Thanks, Uffe
This is not directly power on/off, but a separate "reset" GPIO. However,
checking in pwrseq_simple.c I see:
struct mmc_pwrseq_simple {
struct mmc_pwrseq pwrseq;
bool clk_enabled;
u32 post_power_on_delay_ms;
u32 power_off_delay_us;
struct clk *ext_clk;
struct gpio_descs *reset_gpios;
};
So the term 'reset_gpios' is also used in pwrseq context.
Regards,
Arend
