From: Razmik Karapetyan <razmik@xxxxxxxxxxxx>
In dwc2_hsotg_core_init_disconnected() function used AHB
burst size parameter, instead of calculating already
calculated value.
Changed AHB burst size from INCR4 to INCR by default.
With this value driver show excellent DMA performance.
Signed-off-by: Razmik Karapetyan <razmik@xxxxxxxxxxxx>
Signed-off-by: Grigor Tovmasyan <tovmasya@xxxxxxxxxxxx>
---
drivers/usb/dwc2/core.h | 2 +-
drivers/usb/dwc2/gadget.c | 2 +-
drivers/usb/dwc2/params.c | 2 +-
3 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/usb/dwc2/core.h b/drivers/usb/dwc2/core.h
index 7439aa6e35f6..382d8d9f402f 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/gadget.c b/drivers/usb/dwc2/gadget.c
index 66be52bde8da..5c9d63d5f9fc 100644
--- a/drivers/usb/dwc2/gadget.c
+++ b/drivers/usb/dwc2/gadget.c
@@ -3326,7 +3326,7 @@ void dwc2_hsotg_core_init_disconnected(struct dwc2_hsotg *hsotg,
if (using_dma(hsotg)) {
dwc2_writel(GAHBCFG_GLBL_INTR_EN | GAHBCFG_DMA_EN |
- (GAHBCFG_HBSTLEN_INCR4 << GAHBCFG_HBSTLEN_SHIFT),
+ hsotg->params.ahbcfg,
hsotg->regs + GAHBCFG);
/* Set DDMA mode support in the core if needed */
diff --git a/drivers/usb/dwc2/params.c b/drivers/usb/dwc2/params.c
index fc4d93d78ec3..0ff7dce1ca3b 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)) {
--
2.11.0
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