[PATCH v2 06/22] usb: chipidea: Add platform flag for wrapper phy management

Quoting Peter Chen (2016-07-08 02:25:35)

On Thu, Jul 07, 2016 at 03:20:57PM -0700, Stephen Boyd wrote:

quoted

The ULPI phy on qcom platforms needs to be initialized and
powered on after a USB reset and before we toggle the run/stop
bit. Otherwise, the phy locks up and doesn't work properly.
Therefore, add a flag to skip any phy power management in the
core layer, leaving it up to the glue driver to manage.

Cc: Peter Chen <redacted>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Stephen Boyd <redacted>
---
 drivers/usb/chipidea/core.c  | 6 ++++++
 include/linux/usb/chipidea.h | 1 +
 2 files changed, 7 insertions(+)

diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c
index 01390e02ee53..532085a096d9 100644
--- a/drivers/usb/chipidea/core.c
+++ b/drivers/usb/chipidea/core.c

@@ -361,6 +361,9 @@ static int _ci_usb_phy_init(struct ci_hdrc *ci)
  */
 static void ci_usb_phy_exit(struct ci_hdrc *ci)
 {
+     if (ci->platdata->flags & CI_HDRC_OVERRIDE_PHY_CONTROL)
+             return;
+
      if (ci->phy) {
              phy_power_off(ci->phy);
              phy_exit(ci->phy);

@@ -379,6 +382,9 @@ static int ci_usb_phy_init(struct ci_hdrc *ci)
 {
      int ret;
 
+     if (ci->platdata->flags & CI_HDRC_OVERRIDE_PHY_CONTROL)
+             return 0;
+

How you handle the code for PHY getting at probe?

Which probe? Glue layer probe? In my case I'm not using the phy until
the RESET/STOPPED event so I just rely on the chipidea core to get the
phy and then control the phy manually in the glue layer.