Hello Krzysztof,
On 05/05/2016 08:34 AM, Krzysztof Kozlowski wrote:
> Some devices need real hard-reset by cutting the power. During power
> sequence turn off and on the regulator, if it is provided.
>
> Signed-off-by: Krzysztof Kozlowski <k.kozlowski@xxxxxxxxxxx>
> ---
[snip]
>
> #define to_pwrseq_simple(p) container_of(p, struct mmc_pwrseq_simple, pwrseq)
> @@ -62,6 +65,13 @@ static void mmc_pwrseq_simple_post_power_on(struct pwrseq *_pwrseq)
> {
> struct mmc_pwrseq_simple *pwrseq = to_pwrseq_simple(_pwrseq);
>
> + if (pwrseq->ext_reg) {
> + int err;
> +
> + err = regulator_enable(pwrseq->ext_reg);
> + WARN_ON_ONCE(err);
> + }
> +
Shouldn't this be in mmc_pwrseq_simple_pre_power_on() instead?
For example, a chip may need to be powered on before attempting to
toggle its reset or power pins using some GPIO lines.
Best regards,
--
Javier Martinez Canillas
Open Source Group
Samsung Research America
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