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arm: rpi: perform XHCI firmware upload only once

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XHCI firmware upload must be performed only once after initializing the
PCI bridge. This fixes USB stack initialization after calling "usb stop;
usb start" on Raspberry Pi 4B.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Nicolas Saenz Julienne <nsaenz@kernel.org>
Signed-off-by: Matthias Brugger <mbrugger@suse.com>
This commit is contained in:
Marek Szyprowski 2021-09-17 10:19:43 +02:00 • committed by Matthias Brugger
parent 6f3a9227cc
commit 33166054c7
1 changed files with 6 additions and 0 deletions
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6
arch/arm/mach-bcm283x/msg.c
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@ -170,6 +170,12 @@ int bcm2711_notify_vl805_reset(void)
ALLOC_CACHE_ALIGN_BUFFER(struct msg_notify_vl805_reset,
msg_notify_vl805_reset, 1);
int ret;
static int done = false;
if (done)
return 0;
done = true;
BCM2835_MBOX_INIT_HDR(msg_notify_vl805_reset);
BCM2835_MBOX_INIT_TAG(&msg_notify_vl805_reset->dev_addr,