bcm27xx: import latest patches from the RPi foundation

bcm2708: boot tested on RPi B+ v1.2
bcm2709: boot tested on RPi 3B v1.2 and RPi 4B v1.1 4G
bcm2710: boot tested on RPi 3B v1.2
bcm2711: boot tested on RPi 4B v1.1 4G

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
(cherry-picked from commit f07e572f64)

1 files changed, 29 insertions, 0 deletions

diff --git a/target/linux/bcm27xx/patches-5.4/950-0210-usb-xhci-Disable-the-XHCI-5-second-timeout.patch b/target/linux/bcm27xx/patches-5.4/950-0210-usb-xhci-Disable-the-XHCI-5-second-timeout.patch
new file mode 100644
index 0000000000..2f5e08b7a2
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.4/950-0210-usb-xhci-Disable-the-XHCI-5-second-timeout.patch
@@ -0,0 +1,29 @@
+From a71750c83a6f1f2f7c22864bbb4e62af5e70c214 Mon Sep 17 00:00:00 2001
+From: Tim Gover <tim.gover@raspberrypi.org>
+Date: Fri, 22 Mar 2019 09:47:14 +0000
+Subject: [PATCH] usb: xhci: Disable the XHCI 5 second timeout
+
+If the VL805 EEPROM has not been programmed then boot will hang for five
+seconds. The timeout seems to be arbitrary and is an unecessary
+delay on the first boot. Remove the timeout.
+
+This is common code and probably can't be upstreamed unless the timeout
+can be configurable somehow or perhaps the XHCI driver can be skipped
+on the first boot.
+---
+ drivers/usb/host/xhci.c | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+--- a/drivers/usb/host/xhci.c
++++ b/drivers/usb/host/xhci.c
+@@ -196,8 +196,9 @@ int xhci_reset(struct xhci_hcd *xhci)
+ 	if (xhci->quirks & XHCI_INTEL_HOST)
+ 		udelay(1000);
+ 
++	// Hack: reduce handshake timeout from 10s 0.5s due to unprogrammed vl805
+ 	ret = xhci_handshake(&xhci->op_regs->command,
+-			CMD_RESET, 0, 10 * 1000 * 1000);
++			CMD_RESET, 0, 500 * 1000);
+ 	if (ret)
+ 		return ret;
+