With this setting and AHBBRST at SBUSCFG as "Incremental burst of unspecified length", each non-burst size can be taken as single transfer. It is benefit for non-burst size transfer. Signed-off-by: Peter Chen <peter.chen@xxxxxxxxxxxxx> --- drivers/usb/chipidea/usbmisc_imx.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff --git a/drivers/usb/chipidea/usbmisc_imx.c b/drivers/usb/chipidea/usbmisc_imx.c index 3cefd49..5ddab30 100644 --- a/drivers/usb/chipidea/usbmisc_imx.c +++ b/drivers/usb/chipidea/usbmisc_imx.c @@ -54,6 +54,7 @@ #define MX53_USB_PHYCTRL1_PLLDIV_MASK 0x3 #define MX53_USB_PLL_DIV_24_MHZ 0x01 +#define MX6_BM_NON_BURST_SETTING BIT(1) #define MX6_BM_OVER_CUR_DIS BIT(7) #define MX6_BM_WAKEUP_ENABLE BIT(10) #define MX6_BM_ID_WAKEUP BIT(16) @@ -255,14 +256,21 @@ static int usbmisc_imx6q_init(struct imx_usbmisc_data *data) if (data->index > 3) return -EINVAL; + spin_lock_irqsave(&usbmisc->lock, flags); + if (data->disable_oc) { - spin_lock_irqsave(&usbmisc->lock, flags); reg = readl(usbmisc->base + data->index * 4); writel(reg | MX6_BM_OVER_CUR_DIS, usbmisc->base + data->index * 4); - spin_unlock_irqrestore(&usbmisc->lock, flags); } + /* SoC non-burst setting */ + reg = readl(usbmisc->base + data->index * 4); + writel(reg | MX6_BM_NON_BURST_SETTING, + usbmisc->base + data->index * 4); + + spin_unlock_irqrestore(&usbmisc->lock, flags); + usbmisc_imx6q_set_wakeup(data, false); return 0; -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html