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MLK-18794-3 usb: cdns3: change the definition of PowerState at XECP_PM_PMCSR 

When the USB port goes to suspend, PowerState should set to "D1"
(the D2 and D3hot are not supported now); PowerState should set to
"D0" when the USB port goes to resume.

Signed-off-by: Peter Chen <peter.chen@nxp.com>
(cherry picked from commit c57f21e1031be46969f1f7e026d4dd23de7a8517)
5.4-rM2-2.2.x-imx-squashed
Peter Chen 2018-08-16 14:34:40 +08:00 committed by Dong Aisheng
parent 065da5c38e
commit f4523a64f1
2 changed files with 7 additions and 3 deletions
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4
drivers/usb/cdns3/cdns3-nxp-reg-def.h
View File

@ -168,5 +168,7 @@
#define CFG_RXDET_P3_EN (1 << 15)
/* XECP_PM_PMCSR */
#define PS_D0 (1 << 0)
#define PS_MASK (3 << 0)
#define PS_D0 0
#define PS_D1 (1 << 0)
#endif /* __DRIVERS_USB_CDNS3_NXP_H */

6
drivers/usb/cdns3/core.c
View File

@ -714,7 +714,8 @@ static void cdns3_enter_suspend(struct cdns3 *cdns, bool suspend, bool wakeup)
/* SW request low power when all usb ports allow to it ??? */
value = readl(xhci_regs + XECP_PM_PMCSR);
value |= PS_D0;
value &= ~PS_MASK;
value |= PS_D1;
writel(value, xhci_regs + XECP_PM_PMCSR);
/* mdctrl_clk_sel */
@ -774,7 +775,8 @@ static void cdns3_enter_suspend(struct cdns3 *cdns, bool suspend, bool wakeup)
/* SW request D0 */
value = readl(xhci_regs + XECP_PM_PMCSR);
value &= ~PS_D0;
value &= ~PS_MASK;
value |= PS_D0;
writel(value, xhci_regs + XECP_PM_PMCSR);
/* clr CFG_RXDET_P3_EN */