greybus: arche-platform: assert wake-detect to complete WAKE_OUT event (1e83ee33) · Commits · e / devices / android_kernel_xiaomi_nabu

After SVC generates WAKE_OUT (pulling wake-detect pin low) and APB is brought out of reset, we need to assert wake-detect again to complete SVC WAKE_OUT logic. Testing Done: - Used for DB3.5/EVT1.5 hardware during bringup - Regression tested on DB3.1+ES2, DB3.1+ES3 Signed-off-by:

Michael Scott <michael.scott@linaro.org> Reviewed-by:

Vaibhav Hiremath <vaibhav.hiremath@linaro.org> Tested-by:

Vaibhav Hiremath <vaibhav.hiremath@linaro.org> Signed-off-by:

Greg Kroah-Hartman <gregkh@google.com>

drivers/staging/greybus/arche-platform.c

+4 −2

Original line number	Original line	Diff line number	Diff line
	@@ -79,10 +79,12 @@ static void svc_delayed_work(struct work_struct *work)

	if (timeout >= 0) {		if (timeout >= 0) {
	ret = of_platform_populate(np, NULL, NULL, dev);		ret = of_platform_populate(np, NULL, NULL, dev);
	if (!ret)		if (!ret) {
	/* Should we set wake_detect gpio to output again? */		/* re-assert wake_detect to confirm SVC WAKE_OUT */
			gpio_direction_output(arche_pdata->wake_detect_gpio, 1);
	return;		return;
	}		}
			}

	/* FIXME: We may want to limit retries here */		/* FIXME: We may want to limit retries here */
	gpio_direction_output(arche_pdata->wake_detect_gpio, 0);		gpio_direction_output(arche_pdata->wake_detect_gpio, 0);