From: Stefan Wahren <stefan.wahren@i2se.com>
To: Rob Herring <robh+dt@kernel.org>,
Nicolas Saenz Julienne <nsaenz@kernel.org>
Cc: Florian Fainelli <f.fainelli@gmail.com>,
Ray Jui <rjui@broadcom.com>,
Scott Branden <sbranden@broadcom.com>,
bcm-kernel-feedback-list@broadcom.com,
devicetree@vger.kernel.org, linux-rpi-kernel@lists.infradead.org,
linux-arm-kernel@lists.infradead.org,
Stefan Wahren <stefan.wahren@i2se.com>,
Pavel Hofman <pavel.hofman@ivitera.com>
Subject: [PATCH] Revert "ARM: dts: bcm283x: increase dwc2's RX FIFO size"
Date: Sat, 29 May 2021 15:02:51 +0200 [thread overview]
Message-ID: <1622293371-5997-1-git-send-email-stefan.wahren@i2se.com> (raw)
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>
---
arch/arm/boot/dts/bcm283x-rpi-usb-otg.dtsi | 2 +-
arch/arm/boot/dts/bcm283x-rpi-usb-peripheral.dtsi | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
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
--- 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
--- 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>;
};
--
2.7.4
next reply other threads:[~2021-05-29 13:03 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-29 13:02 Stefan Wahren [this message]
2021-06-08 10:06 ` [PATCH] Revert "ARM: dts: bcm283x: increase dwc2's RX FIFO size" nicolas saenz julienne
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