Hi Minas,
> Minas Harutyunyan <minas.harutyun...@synopsys.com> hat am 21. November 2017
> um 13:02 geschrieben:
>
> Hi Stefan,
>
> We have prepared patch for this issue in July-August'17.
> Find attached 2 patch files. Please apply patches and test. If issue
> gone, we will send these patches to LKML by regular flow.
thanks, but the first patch doesn't apply. My version see below, i hope i
didn't break anything.
Unfortunately after applying both patches the issue still persists (EP 1-7 fifo
size to 512) and the EP 1-7 TX total size increases from 3776 to 3792. I will
follow my u-boot theory ...
>From 12fcc090bc7588275c1d942009676cb3fa5129f2 Mon Sep 17 00:00:00 2001
From: Gevorg Sahakyan <sahak...@synopsys.com>
Date: Wed, 22 Nov 2017 11:15:16 +0100
Subject: [PATCH] usb: dwc2: Fix TxFIFO setup issue
In host mode reading from DPTXSIZn returning invalid value(0) in
dwc2_check_param_tx_fifo_sizes function.
Added g_tx_fifo_size array in dwc2_hw_params structure in which stored
power on reset valus of DPTXSIZn registers in device mode (forced to
device).
Updated dwc2_get_hwparams function to write DPTXFSIZn to array.
Modyfied dwc2_check_param_tx_fifo_sizes function accordingly.
Change-Id: I61d3db753b1bc06f0f2caf40df350a09655f18fd
Signed-off-by: Gevorg Sahakyan <sahak...@synopsys.com>
Signed-off-by: Stefan Wahren <stefan.wah...@i2se.com>
---
drivers/usb/dwc2/core.h | 1 +
drivers/usb/dwc2/params.c | 11 +++++++++--
2 files changed, 10 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/dwc2/core.h b/drivers/usb/dwc2/core.h
index 8367d4f..47e9092 100644
--- a/drivers/usb/dwc2/core.h
+++ b/drivers/usb/dwc2/core.h
@@ -587,6 +587,7 @@ struct dwc2_hw_params {
unsigned utmi_phy_data_width:2;
u32 snpsid;
u32 dev_ep_dirs;
+ u32 g_tx_fifo_size[MAX_EPS_CHANNELS];
};
/* Size of control and EP0 buffers */
diff --git a/drivers/usb/dwc2/params.c b/drivers/usb/dwc2/params.c
index a3ffe97..04f1868 100644
--- a/drivers/usb/dwc2/params.c
+++ b/drivers/usb/dwc2/params.c
@@ -469,8 +469,7 @@ static void dwc2_check_param_tx_fifo_sizes(struct
dwc2_hsotg *hsotg)
}
for (fifo = 1; fifo <= fifo_count; fifo++) {
- dptxfszn = (dwc2_readl(hsotg->regs + DPTXFSIZN(fifo)) &
- FIFOSIZE_DEPTH_MASK) >> FIFOSIZE_DEPTH_SHIFT;
+ dptxfszn = hsotg->hw_params.g_tx_fifo_size[fifo];
if (hsotg->params.g_tx_fifo_size[fifo] < min ||
hsotg->params.g_tx_fifo_size[fifo] > dptxfszn) {
@@ -617,6 +616,7 @@ int dwc2_get_hwparams(struct dwc2_hsotg *hsotg)
{
struct dwc2_hw_params *hw = &hsotg->hw_params;
unsigned int width;
+ int fifo, fifo_count;
u32 hwcfg1, hwcfg2, hwcfg3, hwcfg4;
u32 grxfsiz;
@@ -705,6 +705,13 @@ int dwc2_get_hwparams(struct dwc2_hsotg *hsotg)
hw->rx_fifo_size = (grxfsiz & GRXFSIZ_DEPTH_MASK) >>
GRXFSIZ_DEPTH_SHIFT;
+ fifo_count = dwc2_hsotg_tx_fifo_count(hsotg);
+
+ for (fifo = 1; fifo <= fifo_count; fifo++) {
+ u32 val = dwc2_readl(hsotg->regs + DPTXFSIZN(fifo));
+ hw->g_tx_fifo_size[fifo] = (val & FIFOSIZE_DEPTH_MASK) >>
+ FIFOSIZE_DEPTH_SHIFT;
+ }
return 0;
}
--
2.7.4
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