diff options
| author | Girish Mahadevan <girishm@codeaurora.org> | 2016-10-07 12:32:58 -0600 |
|---|---|---|
| committer | Gerrit - the friendly Code Review server <code-review@localhost> | 2016-10-18 11:48:27 -0700 |
| commit | 2ea1cecd04ecec79499e270a1a693ef0b167fa81 (patch) | |
| tree | 299e4fad41988594a6f49cfbc77282402825d465 /drivers/tty/serial | |
| parent | c6b7d9674c413431a6622844bdcbfc8a7f2942df (diff) | |
serial: msm_serial_hs: Move HS UART pins to known state at probe
During probe the driver does a devm_pinctrl_get() on the GPIOs assigned
to it. This call doesn't move the state of pins (bias/drv strength) to a
known state, rather only sets the function mux for those pins. As a result
the pins are in an unknown/floating state till a usecase for the port
begins.
Instead move the pins to the "sleep" state during probe to put them into a
known state.
Change-Id: Ifc6102d367fb0ca9fffbd50a6077dccd779e9a6c
Signed-off-by: Girish Mahadevan <girishm@codeaurora.org>
Diffstat (limited to 'drivers/tty/serial')
| -rw-r--r-- | drivers/tty/serial/msm_serial_hs.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/tty/serial/msm_serial_hs.c b/drivers/tty/serial/msm_serial_hs.c index fa3c9e511663..ec9288791667 100644 --- a/drivers/tty/serial/msm_serial_hs.c +++ b/drivers/tty/serial/msm_serial_hs.c @@ -3555,6 +3555,7 @@ static int msm_hs_probe(struct platform_device *pdev) } msm_serial_debugfs_init(msm_uport, pdev->id); + msm_hs_unconfig_uart_gpios(uport); uport->line = pdev->id; if (pdata->userid && pdata->userid <= UARTDM_NR) |