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usb: dwc2: gadget: Reject LPM token during Control transfers
Avoiding switch to L1 state in any stage of control transfers. Send NYET handshake to LPM token. Renamed GLPMCFG_LPM_ACCEPT_CTRL_ISOC to GLPMCFG_LPM_REJECT_CTRL_CONTROL because by setting this bit core reject LPM token. Signed-off-by: Minas Harutyunyan <hminas@synopsys.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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2 changed files with 2 additions and 1 deletions
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@ -5073,6 +5073,7 @@ void dwc2_gadget_init_lpm(struct dwc2_hsotg *hsotg)
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val |= hsotg->params.lpm_clock_gating ? GLPMCFG_ENBLSLPM : 0;
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val |= hsotg->params.hird_threshold << GLPMCFG_HIRD_THRES_SHIFT;
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val |= hsotg->params.besl ? GLPMCFG_ENBESL : 0;
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val |= GLPMCFG_LPM_REJECT_CTRL_CONTROL;
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val |= GLPMCFG_LPM_ACCEPT_CTRL_ISOC;
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dwc2_writel(hsotg, val, GLPMCFG);
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dev_dbg(hsotg->dev, "GLPMCFG=0x%08x\n", dwc2_readl(hsotg, GLPMCFG));
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@ -333,7 +333,7 @@
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#define GLPMCFG_SNDLPM BIT(24)
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#define GLPMCFG_RETRY_CNT_MASK (0x7 << 21)
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#define GLPMCFG_RETRY_CNT_SHIFT 21
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#define GLPMCFG_LPM_ACCEPT_CTRL_CONTROL BIT(21)
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#define GLPMCFG_LPM_REJECT_CTRL_CONTROL BIT(21)
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#define GLPMCFG_LPM_ACCEPT_CTRL_ISOC BIT(22)
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#define GLPMCFG_LPM_CHNL_INDX_MASK (0xf << 17)
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#define GLPMCFG_LPM_CHNL_INDX_SHIFT 17
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