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usb: dwc3: Disable parkmode for Gen1 controllers

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Disable parkmode for Gen1 controllers to fix the data stall issue
in host mode.

Change-Id: I28694a533543b14f752e195b722aafcb83cc4f1d
Signed-off-by: Ajay Agarwal <ajaya@codeaurora.org>
Signed-off-by: Manu Gautam <mgautam@codeaurora.org>
This commit is contained in:
Ajay Agarwal 2020-05-20 21:22:05 +05:30 • committed by Manu Gautam
commit 1b2e48eeaf
2 changed files with 16 additions and 0 deletions
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11
drivers/usb/dwc3/core.c
View file

@ -1033,6 +1033,17 @@ int dwc3_core_init(struct dwc3 *dwc)
if (dwc->parkmode_disable_ss_quirk)
reg |= DWC3_GUCTL1_PARKMODE_DISABLE_SS;
/*
* STAR: 9001415732: Host failure when Park mode is enabled:
* Disable parkmode for Gen1 controllers to fix the stall
* seen during host mode transfers on multiple endpoints.
*/
if (!dwc3_is_usb31(dwc)) {
reg |= DWC3_GUCTL1_PARKMODE_DISABLE_SS;
reg |= DWC3_GUCTL1_PARKMODE_DISABLE_HS;
reg |= DWC3_GUCTL1_PARKMODE_DISABLE_FSLS;
}
dwc3_writel(dwc->regs, DWC3_GUCTL1, reg);
}

5
drivers/usb/dwc3/core.h
View file

@ -274,6 +274,11 @@
#define DWC3_GUCTL1_TX_IPGAP_LINECHECK_DIS BIT(28)
#define DWC3_GUCTL1_DEV_L1_EXIT_BY_HW BIT(24)
#define DWC3_GUCTL1_IP_GAP_ADD_ON(n) (n << 21)
#define DWC3_GUCTL1_PARKMODE_DISABLE_SS BIT(17)
#define DWC3_GUCTL1_PARKMODE_DISABLE_HS BIT(16)
#define DWC3_GUCTL1_PARKMODE_DISABLE_FSLS BIT(15)
#define DWC3_GUCTL1_L1_SUSP_THRLD_EN_FOR_HOST BIT(8)
/* Global Status Register */