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Commit 730229e1 authored by Ajay Agarwal's avatar Ajay Agarwal
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usb: dwc3: Disable parkmode for Gen1 controllers 



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

Change-Id: I28694a533543b14f752e195b722aafcb83cc4f1d
Signed-off-by: default avatarAjay Agarwal <ajaya@codeaurora.org>
parent 5974d512

drivers/usb/dwc3/core.c

+11 −0
Original line number Diff line number Diff line
@@ -889,6 +889,17 @@ int dwc3_core_init(struct dwc3 *dwc) 
		if (dwc->dis_tx_ipgap_linecheck_quirk)

			reg |= DWC3_GUCTL1_TX_IPGAP_LINECHECK_DIS;



		/*

		 * 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);

	}

drivers/usb/dwc3/core.h

+3 −0
Original line number Diff line number Diff line
@@ -223,6 +223,9 @@ 
#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)



/* Global Debug LTSSM Register */

#define DWC3_GDBGLTSSM_LINKSTATE_MASK	(0xF << 22)