diff options
Diffstat (limited to 'drivers/usb/dwc3/core.c')
| -rw-r--r-- | drivers/usb/dwc3/core.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index 3ea55f214439..8ae42b8db02b 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -730,6 +730,7 @@ static int dwc3_probe(struct platform_device *pdev) struct dwc3 *dwc; u8 lpm_nyet_threshold; u8 tx_de_emphasis; + u8 hird_threshold; int ret; @@ -791,12 +792,22 @@ static int dwc3_probe(struct platform_device *pdev) /* default to -3.5dB de-emphasis */ tx_de_emphasis = 1; + /* + * default to assert utmi_sleep_n and use maximum allowed HIRD + * threshold value of 0b1100 + */ + hird_threshold = 12; + if (node) { dwc->maximum_speed = of_usb_get_maximum_speed(node); dwc->has_lpm_erratum = of_property_read_bool(node, "snps,has-lpm-erratum"); of_property_read_u8(node, "snps,lpm-nyet-threshold", &lpm_nyet_threshold); + dwc->is_utmi_l1_suspend = of_property_read_bool(node, + "snps,is-utmi-l1-suspend"); + of_property_read_u8(node, "snps,hird-threshold", + &hird_threshold); dwc->needs_fifo_resize = of_property_read_bool(node, "tx-fifo-resize"); @@ -832,6 +843,9 @@ static int dwc3_probe(struct platform_device *pdev) dwc->has_lpm_erratum = pdata->has_lpm_erratum; if (pdata->lpm_nyet_threshold) lpm_nyet_threshold = pdata->lpm_nyet_threshold; + dwc->is_utmi_l1_suspend = pdata->is_utmi_l1_suspend; + if (pdata->hird_threshold) + hird_threshold = pdata->hird_threshold; dwc->needs_fifo_resize = pdata->tx_fifo_resize; dwc->dr_mode = pdata->dr_mode; @@ -859,6 +873,9 @@ static int dwc3_probe(struct platform_device *pdev) dwc->lpm_nyet_threshold = lpm_nyet_threshold; dwc->tx_de_emphasis = tx_de_emphasis; + dwc->hird_threshold = hird_threshold + | (dwc->is_utmi_l1_suspend << 4); + ret = dwc3_core_get_phy(dwc); if (ret) return ret; |