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rk312x: usb power optimize by turning off differential receiver in suspend mode

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This commit is contained in:
lyz
2014-09-02 20:34:28 +08:00
parent 6e2002dd9c
commit 4bcced1910
1 changed files with 7 additions and 0 deletions
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7
drivers/usb/dwc_otg_310/usbdev_rk3126.c
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@@ -6,6 +6,9 @@ static struct dwc_otg_control_usb *control_usb;
#ifdef CONFIG_USB20_OTG
static void usb20otg_hw_init(void)
{
/* Turn off differential receiver in suspend mode */
writel(UOC_HIWORD_UPDATE(0, 1, 2),
RK_GRF_VIRT + RK312X_GRF_USBPHY1_CON6);
/* other haredware init,include:
* DRV_VBUS GPIO init */
if (gpio_is_valid(control_usb->otg_gpios->gpio)) {
@@ -210,8 +213,12 @@ struct dwc_otg_platform_data usb20otg_pdata_rk3126 = {
#ifdef CONFIG_USB20_HOST
static void usb20host_hw_init(void)
{
/* Switch to DWC HOST */
writel(UOC_HIWORD_UPDATE(1, 1, 3),
RK_GRF_VIRT + RK312X_GRF_SOC_CON2);
/* Turn off differential receiver in suspend mode */
writel(UOC_HIWORD_UPDATE(0, 1, 2),
RK_GRF_VIRT + RK312X_GRF_USBPHY0_CON6);
/* other haredware init,include:
* DRV_VBUS GPIO init */
if (gpio_is_valid(control_usb->host_gpios->gpio)) {