@@ -1,44 +0,0 @@
|
||||
From 04fbf78e4e569bf872f1ffcb0a6f9b89569dc913 Mon Sep 17 00:00:00 2001
|
||||
From: Hal Emmerich <hal@halemmerich.com>
|
||||
Date: Thu, 19 Jul 2018 21:48:08 -0500
|
||||
Subject: [PATCH] usb: dwc2: disable power_down on rockchip devices
|
||||
|
||||
The bug would let the usb controller enter partial power down,
|
||||
which was formally known as hibernate, upon boot if nothing was plugged
|
||||
in to the port. Partial power down couldn't be exited properly, so any
|
||||
usb devices plugged in after boot would not be usable.
|
||||
|
||||
Before the name change, params.hibernation was false by default, so
|
||||
_dwc2_hcd_suspend() would skip entering hibernation. With the
|
||||
rename, _dwc2_hcd_suspend() was changed to use params.power_down
|
||||
to decide whether or not to enter partial power down.
|
||||
|
||||
Since params.power_down is non-zero by default, it needs to be set
|
||||
to 0 for rockchip devices to restore functionality.
|
||||
|
||||
This bug was reported in the linux-usb thread:
|
||||
REGRESSION: usb: dwc2: USB device not seen after boot
|
||||
|
||||
The commit that caused this regression is:
|
||||
6d23ee9caa6790aea047f9aca7f3c03cb8d96eb6
|
||||
|
||||
Signed-off-by: Hal Emmerich <hal@halemmerich.com>
|
||||
---
|
||||
drivers/usb/dwc2/params.c | 1 +
|
||||
1 file changed, 1 insertion(+)
|
||||
|
||||
diff --git a/drivers/usb/dwc2/params.c b/drivers/usb/dwc2/params.c
|
||||
index f03e418..492607a 100644
|
||||
--- a/drivers/usb/dwc2/params.c
|
||||
+++ b/drivers/usb/dwc2/params.c
|
||||
@@ -82,6 +82,7 @@ static void dwc2_set_rk_params(struct dwc2_hsotg *hsotg)
|
||||
p->host_perio_tx_fifo_size = 256;
|
||||
p->ahbcfg = GAHBCFG_HBSTLEN_INCR16 <<
|
||||
GAHBCFG_HBSTLEN_SHIFT;
|
||||
+ p->power_down = 0;
|
||||
}
|
||||
|
||||
static void dwc2_set_ltq_params(struct dwc2_hsotg *hsotg)
|
||||
--
|
||||
2.11.0
|
||||
|
||||
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