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usb: chipidea: imx: allow to configure oc polarity on i.MX25

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Up to now the polarity of the over current pin was hard coded to active
high. Use the already defined device tree properties to configure polarity
on i.MX25, too. In difference to i.MX6/7 use active high behavior if the
polarity is unspecified to keep compatibility to existing device trees.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Peter Chen <peter.chen@nxp.com>
This commit is contained in:
Uwe Kleine-König 2018-12-04 09:31:31 +01:00 committed by Peter Chen
parent 1bf4743f64
commit 9049fce897
1 changed files with 15 additions and 0 deletions
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15
drivers/usb/chipidea/usbmisc_imx.c
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@ -136,6 +136,14 @@ static int usbmisc_imx25_init(struct imx_usbmisc_data *data)
val &= ~(MX25_OTG_SIC_MASK | MX25_OTG_PP_BIT);
val |= (MX25_EHCI_INTERFACE_DIFF_UNI & MX25_EHCI_INTERFACE_MASK) << MX25_OTG_SIC_SHIFT;
val |= (MX25_OTG_PM_BIT | MX25_OTG_OCPOL_BIT);
/*
* If the polarity is not configured assume active high for
* historical reasons.
*/
if (data->oc_pol_configured && data->oc_pol_active_low)
val &= ~MX25_OTG_OCPOL_BIT;
writel(val, usbmisc->base);
break;
case 1:
@ -145,6 +153,13 @@ static int usbmisc_imx25_init(struct imx_usbmisc_data *data)
val |= (MX25_H1_PM_BIT | MX25_H1_OCPOL_BIT | MX25_H1_TLL_BIT |
MX25_H1_USBTE_BIT | MX25_H1_IPPUE_DOWN_BIT);
/*
* If the polarity is not configured assume active high for
* historical reasons.
*/
if (data->oc_pol_configured && data->oc_pol_active_low)
val &= ~MX25_H1_OCPOL_BIT;
writel(val, usbmisc->base);
break;