Revert "ARM: dts: bcm283x: increase dwc2's RX FIFO size"

This reverts commit 278407a53c3b33fb820332c4d39eb39316c3879a.

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: 278407a53c3b ("ARM: dts: bcm283x: increase dwc2's RX FIFO size")
Signed-off-by: Stefan 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: Nicolas Saenz Julienne <nsaenz@kernel.org>

diff --git a/arch/arm/boot/dts/bcm283x-rpi-usb-otg.dtsi b/arch/arm/boot/dts/bcm283x-rpi-usb-otg.dtsi
index 20322de..e2fd961 100644 (file)
--- a/arch/arm/boot/dts/bcm283x-rpi-usb-otg.dtsi
+++ b/arch/arm/boot/dts/bcm283x-rpi-usb-otg.dtsi
@@ -1,7 +1,7 @@
 // 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

diff --git a/arch/arm/boot/dts/bcm283x-rpi-usb-peripheral.dtsi b/arch/arm/boot/dts/bcm283x-rpi-usb-peripheral.dtsi
index 1409d1b..0ff0e9e 100644 (file)
--- a/arch/arm/boot/dts/bcm283x-rpi-usb-peripheral.dtsi
+++ b/arch/arm/boot/dts/bcm283x-rpi-usb-peripheral.dtsi
@@ -1,7 +1,7 @@
 // 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>;
 };