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Merge "usb: dwc3: Revert Add support for nominal elastic buffer"

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qctecmdr 2020-11-26 05:30:42 -08:00 • committed by Gerrit - the friendly Code Review server
commit 7952df3579
2 changed files with 0 additions and 14 deletions
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12
drivers/usb/dwc3/core.c
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@ -1121,16 +1121,6 @@ int dwc3_core_init(struct dwc3 *dwc)
}
dwc3_notify_event(dwc, DWC3_CONTROLLER_POST_RESET_EVENT, 0);
/*
* clear Elastic buffer mode in GUSBPIPE_CTRL(0) register, otherwise
* it results in high link errors and could cause SS mode transfer
* failure.
*/
if (!dwc->nominal_elastic_buffer) {
reg = dwc3_readl(dwc->regs, DWC3_GUSB3PIPECTL(0));
reg &= ~DWC3_GUSB3PIPECTL_ELASTIC_BUF_MODE;
dwc3_writel(dwc->regs, DWC3_GUSB3PIPECTL(0), reg);
}
return 0;
@ -1379,8 +1369,6 @@ 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);
dwc->nominal_elastic_buffer = of_property_read_bool(dev->of_node,
"nominal-elastic-buffer");
dwc->needs_fifo_resize = device_property_read_bool(dev,
"tx-fifo-resize");

2
drivers/usb/dwc3/core.h
View file

@ -337,7 +337,6 @@
#define DWC3_GUSB3PIPECTL_TX_DEEPH_MASK DWC3_GUSB3PIPECTL_TX_DEEPH(3)
#define DWC3_GUSB3PIPECTL_TX_DEEPH(n) ((n) << 1)
#define DWC3_GUSB3PIPECTL_DELAYP1TRANS BIT(18)
#define DWC3_GUSB3PIPECTL_ELASTIC_BUF_MODE (1 << 0)
/* Global TX Fifo Size Register */
#define DWC31_GTXFIFOSIZ_TXFRAMNUM BIT(15) /* DWC_usb31 only */
@ -1366,7 +1365,6 @@ struct dwc3 {
struct dwc3_gadget_events dbg_gadget_events;
int tx_fifo_size;
int last_fifo_depth;
bool nominal_elastic_buffer;
/* IRQ timing statistics */
int irq;