Commit 77daceab authored by Stefan Wahren's avatar Stefan Wahren Committed by Nicolas Saenz Julienne
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Revert "ARM: dts: bcm283x: increase dwc2's RX FIFO size" 



This reverts commit 278407a5.

The original change breaks USB config on Raspberry Pi Zero and Pi 4 B,
because it exceeds the total fifo size of 4080. A naive attempt to reduce
g-tx-fifo-size doesn't help on Raspberry Pi Zero. So better go back.

Fixes: 278407a5 ("ARM: dts: bcm283x: increase dwc2's RX FIFO size")
Signed-off-by: default avatarStefan Wahren <stefan.wahren@i2se.com>
Cc: Pavel Hofman <pavel.hofman@ivitera.com>
Link: https://lore.kernel.org/r/1622293371-5997-1-git-send-email-stefan.wahren@i2se.com


Signed-off-by: default avatarNicolas Saenz Julienne <nsaenz@kernel.org>
parent 6efb943b

arch/arm/boot/dts/bcm283x-rpi-usb-otg.dtsi

+1 −1
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0

&usb {

	dr_mode = "otg";

	g-rx-fifo-size = <558>;

	g-rx-fifo-size = <256>;

	g-np-tx-fifo-size = <32>;

	/*

	 * According to dwc2 the sum of all device EP

arch/arm/boot/dts/bcm283x-rpi-usb-peripheral.dtsi

+1 −1
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0

&usb {

	dr_mode = "peripheral";

	g-rx-fifo-size = <558>;

	g-rx-fifo-size = <256>;

	g-np-tx-fifo-size = <32>;

	g-tx-fifo-size = <256 256 512 512 512 768 768>;

};