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7d7aa2fd92
This change makes the names of Broadcom targets consistent by using the common notation based on SoC/CPU ID (which is used internally anyway), bcmXXXX instead of brcmXXXX. This is even used for target TITLE in make menuconfig already, only the short target name used brcm so far. Despite, since subtargets range from bcm2708 to bcm2711, it seems appropriate to use bcm27xx instead of bcm2708 (again, as already done for BOARDNAME). This also renames the packages brcm2708-userland and brcm2708-gpu-fw. Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de> Acked-by: Álvaro Fernández Rojas <noltari@gmail.com>
33 lines
1.2 KiB
Diff
33 lines
1.2 KiB
Diff
From 389107911744588cce5e06c23a058c9cfb641f33 Mon Sep 17 00:00:00 2001
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From: Phil Elwell <phil@raspberrypi.com>
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Date: Tue, 4 Feb 2020 13:03:21 +0000
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Subject: [PATCH] overlays: dwc2: Increase RX FIFO size
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The previous version of the dwc2 overlay set the RX FIFO size to
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256 4-byte words. This sounds large enough for a 1024 byte packet (the
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largest isochronous high speed packet allowed), but it doesn't take
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into account some extra space needed by the hardware.
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Minas Harutyunyan at Synopsys (the source of the DWC OTG design)
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came up with a more correct value, 301, but since there is spare packet
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RAM this can be increased to 558 to allow two packets per frame.
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See: https://github.com/raspberrypi/linux/issues/3447
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Signed-off-by: Phil Elwell <phil@raspberrypi.com>
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---
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arch/arm/boot/dts/overlays/dwc2-overlay.dts | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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--- a/arch/arm/boot/dts/overlays/dwc2-overlay.dts
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+++ b/arch/arm/boot/dts/overlays/dwc2-overlay.dts
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@@ -12,7 +12,7 @@
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compatible = "brcm,bcm2835-usb";
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dr_mode = "otg";
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g-np-tx-fifo-size = <32>;
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- g-rx-fifo-size = <256>;
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+ g-rx-fifo-size = <558>;
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g-tx-fifo-size = <512 512 512 512 512 256 256>;
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status = "okay";
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};
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