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usb: dwc2: Set AHB burst size to INCR

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Changed AHB burst size from INCR4 to INCR by default.
With this value driver shows excellent DMA performance.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Razmik Karapetyan <razmik@synopsys.com>
Signed-off-by: Grigor Tovmasyan <tovmasya@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This commit is contained in:
Razmik Karapetyan 2018-01-19 14:40:23 +04:00 committed by Felipe Balbi
parent d1ac8c802d
commit 1b52d2fac4
2 changed files with 2 additions and 2 deletions
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2
drivers/usb/dwc2/core.h
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@ -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

2
drivers/usb/dwc2/params.c
View File

@ -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)) {