diff options
| author | Vaibhav Hiremath <vaibhav.hiremath@linaro.org> | 2016-02-13 02:04:06 +0530 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@google.com> | 2016-02-15 13:18:40 -0800 |
| commit | b4c95fca6a9dd8ac2242a451e53781d5313b8c1d (patch) | |
| tree | ae558b206c3d16e5ce0902585025c0a8db77ce6d /drivers | |
| parent | e74d04a5810233a95cb7a556165817d378b89e44 (diff) | |
greybus: arche-platform: Pull wake/detect low in poweroff
When SVC goes down, make sure that wake/detect is also pulled low.
Note that this is not the criteria for SVC poweroff, but it is required
to have right state on wake/detect line before powering off.
And on next boot, the boot-sequence code would take care of
handshaking with SVC.
Tested-on: Tested on EVT1.2 and DB3.5 platform.
Signed-off-by: Vaibhav Hiremath <vaibhav.hiremath@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/staging/greybus/arche-platform.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/staging/greybus/arche-platform.c b/drivers/staging/greybus/arche-platform.c index 1336fc4194c7..b2f3919f7cb3 100644 --- a/drivers/staging/greybus/arche-platform.c +++ b/drivers/staging/greybus/arche-platform.c @@ -136,6 +136,10 @@ static int arche_platform_coldboot_seq(struct arche_platform_drvdata *arche_pdat static void arche_platform_poweroff_seq(struct arche_platform_drvdata *arche_pdata) { + /* Send disconnect/detach event to SVC */ + gpio_set_value(arche_pdata->wake_detect_gpio, 0); + usleep_range(100, 200); + clk_disable_unprepare(arche_pdata->svc_ref_clk); /* As part of exit, put APB back in reset state */ svc_reset_onoff(arche_pdata->svc_reset_gpio, |