Messages in this thread | | | Date | Tue, 27 Dec 2022 13:06:43 -0800 | Subject | Re: [RFC PATCH 08/14] usb: dwc3: Add DT parameter to specify maximum number of interrupters | From | Wesley Cheng <> |
| |
Hi Dmitry,
On 12/24/2022 3:13 AM, Dmitry Baryshkov wrote: > On Sat, 24 Dec 2022 at 01:33, Wesley Cheng <quic_wcheng@quicinc.com> wrote: >> >> Allow for the DWC3 host driver to pass along a XHCI property that defines >> how many interrupters to allocate. This is in relation for the number of >> event rings that can be potentially used by other processors within the >> system. >> >> Signed-off-by: Wesley Cheng <quic_wcheng@quicinc.com> >> --- >> drivers/usb/dwc3/core.c | 12 ++++++++++++ >> drivers/usb/dwc3/core.h | 2 ++ >> drivers/usb/dwc3/host.c | 5 ++++- >> 3 files changed, 18 insertions(+), 1 deletion(-) >> >> diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c >> index 476b63618511..67d6f0ae81d2 100644 >> --- a/drivers/usb/dwc3/core.c >> +++ b/drivers/usb/dwc3/core.c >> @@ -1446,6 +1446,7 @@ static void dwc3_get_properties(struct dwc3 *dwc) >> u8 tx_thr_num_pkt_prd = 0; >> u8 tx_max_burst_prd = 0; >> u8 tx_fifo_resize_max_num; >> + u8 num_hc_interrupters; >> const char *usb_psy_name; >> int ret; >> >> @@ -1468,6 +1469,9 @@ static void dwc3_get_properties(struct dwc3 *dwc) >> */ >> tx_fifo_resize_max_num = 6; >> >> + /* default to a single XHCI interrupter */ >> + num_hc_interrupters = 1; >> + >> dwc->maximum_speed = usb_get_maximum_speed(dev); >> dwc->max_ssp_rate = usb_get_maximum_ssp_rate(dev); >> dwc->dr_mode = usb_get_dr_mode(dev); >> @@ -1511,6 +1515,12 @@ static void dwc3_get_properties(struct dwc3 *dwc) >> &tx_thr_num_pkt_prd); >> device_property_read_u8(dev, "snps,tx-max-burst-prd", >> &tx_max_burst_prd); >> + device_property_read_u8(dev, "snps,num-hc-interrupters", >> + &num_hc_interrupters); > > bindings change? >
Will add one. Thanks!
Thanks Wesley Cheng
| |