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usb: chipidea: Add platform flag for wrapper phy management
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. Acked-by: Peter Chen <peter.chen@nxp.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Stephen Boyd <stephen.boyd@linaro.org> Signed-off-by: Peter Chen <peter.chen@nxp.com>
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2 changed files with 7 additions and 0 deletions
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@ -361,6 +361,9 @@ static int _ci_usb_phy_init(struct ci_hdrc *ci)
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*/
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static void ci_usb_phy_exit(struct ci_hdrc *ci)
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{
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if (ci->platdata->flags & CI_HDRC_OVERRIDE_PHY_CONTROL)
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return;
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if (ci->phy) {
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phy_power_off(ci->phy);
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phy_exit(ci->phy);
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@ -379,6 +382,9 @@ static int ci_usb_phy_init(struct ci_hdrc *ci)
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{
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int ret;
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if (ci->platdata->flags & CI_HDRC_OVERRIDE_PHY_CONTROL)
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return 0;
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switch (ci->platdata->phy_mode) {
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case USBPHY_INTERFACE_MODE_UTMI:
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case USBPHY_INTERFACE_MODE_UTMIW:
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@ -57,6 +57,7 @@ struct ci_hdrc_platform_data {
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#define CI_HDRC_OVERRIDE_AHB_BURST BIT(9)
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#define CI_HDRC_OVERRIDE_TX_BURST BIT(10)
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#define CI_HDRC_OVERRIDE_RX_BURST BIT(11)
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#define CI_HDRC_OVERRIDE_PHY_CONTROL BIT(12) /* Glue layer manages phy */
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enum usb_dr_mode dr_mode;
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#define CI_HDRC_CONTROLLER_RESET_EVENT 0
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#define CI_HDRC_CONTROLLER_STOPPED_EVENT 1
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