From: Razmik Karapetyan Date: Fri, 19 Jan 2018 10:40:23 +0000 (+0400) Subject: usb: dwc2: Set AHB burst size to INCR X-Git-Tag: v4.17-rc1~126^2~18^2~73 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=1b52d2fac4075e8e32a95ad81b521fdab1e1678c;p=thirdparty%2Fkernel%2Flinux.git usb: dwc2: Set AHB burst size to INCR Changed AHB burst size from INCR4 to INCR by default. With this value driver shows excellent DMA performance. Acked-by: John Youn Signed-off-by: Razmik Karapetyan Signed-off-by: Grigor Tovmasyan Signed-off-by: Felipe Balbi --- diff --git a/drivers/usb/dwc2/core.h b/drivers/usb/dwc2/core.h index 1b6e4ccda6175..cc9bf68b5e7c1 100644 --- a/drivers/usb/dwc2/core.h +++ b/drivers/usb/dwc2/core.h @@ -408,7 +408,7 @@ enum dwc2_ep0_state { * @ahbcfg: This field allows the default value of the GAHBCFG * register to be overridden * -1 - GAHBCFG value will be set to 0x06 - * (INCR4, default) + * (INCR, default) * all others - GAHBCFG value will be overridden with * this value * Not all bits can be controlled like this, the diff --git a/drivers/usb/dwc2/params.c b/drivers/usb/dwc2/params.c index 82f5846d76715..4303255108124 100644 --- a/drivers/usb/dwc2/params.c +++ b/drivers/usb/dwc2/params.c @@ -280,7 +280,7 @@ static void dwc2_set_default_params(struct dwc2_hsotg *hsotg) p->hibernation = false; p->max_packet_count = hw->max_packet_count; p->max_transfer_size = hw->max_transfer_size; - p->ahbcfg = GAHBCFG_HBSTLEN_INCR4 << GAHBCFG_HBSTLEN_SHIFT; + p->ahbcfg = GAHBCFG_HBSTLEN_INCR << GAHBCFG_HBSTLEN_SHIFT; if ((hsotg->dr_mode == USB_DR_MODE_HOST) || (hsotg->dr_mode == USB_DR_MODE_OTG)) {