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execution of start.elf is delayed by 0.7 seconds #1657

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SyotaTanaka opened this issue Nov 20, 2021 · 4 comments
Closed

execution of start.elf is delayed by 0.7 seconds #1657

SyotaTanaka opened this issue Nov 20, 2021 · 4 comments

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@SyotaTanaka
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1df5579
This commit seems to slow down execution by about 0.7 seconds.

Is this delay the intended change?
Also, is there any way to avoid this delay?

Device: Raspberry Pi 1 Model B
config.txt: None

@pelwell
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pelwell commented Nov 23, 2021

The delay is due to an intentional change - unplugging your camera would avoid it.

@SyotaTanaka
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The delay is due to an intentional change - unplugging your camera would avoid it.

I don't use a camera.
External connection is only USB serial to GPIO.

@pelwell
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pelwell commented Nov 24, 2021

That's interesting. What does raspi-gpio get 0-3 report? And tail -3 /proc/cpuinfo?

@SyotaTanaka
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SyotaTanaka commented Nov 24, 2021

@pelwell

pi@raspberrypi:~$ raspi-gpio get 0-3
GPIO 0: level=1 fsel=4 alt=0 func=SDA0
GPIO 1: level=1 fsel=4 alt=0 func=SCL0
GPIO 2: level=1 fsel=0 func=INPUT
GPIO 3: level=1 fsel=0 func=INPUT
pi@raspberrypi:~$ tail -3 /proc/cpuinfo
Revision        : 000d
Serial          : 0000000024168025
Model           : Raspberry Pi Model B Rev 2

The measurement was done this way
https://forums.raspberrypi.com/viewtopic.php?t=84734

popcornmix added a commit that referenced this issue Dec 1, 2021
kernel: drivers: bcm2835_unicam: Add logging message when a frame is dropped
See: raspberrypi/linux#4748

kernel: staging/bcm2835-codec: Allow a different stride alignment per role
See: raspberrypi/linux#4746

kernel: KMS fixes and ISP pitch fix
See: raspberrypi/linux#4744

kernel: media: rpivid: remove min_buffers_needed from src queue
See: raspberrypi/linux#4745

firmware: board_info: Add upstream dtb names for cm1 & 3
firmware: board_info: Add upstream dtb name for cm4
See: #1660

firmware: platform: Allow users to disable camera boot HMAC check
See: #1657

firmware: clock: 2711: Fix potential API issue in 2711 VCO setup

firmware: arm_loader: Enable USB MSD boot mode on Zero 2 W

firmware: isp: Fix Rec.709 colour space problems

userland: raspicam: Check system is running legacy camera stack
See: raspberrypi/userland#713

userland: mmal: Hack to make mmal core register VideoCore components
See: raspberrypi/userland#714
popcornmix added a commit to raspberrypi/rpi-firmware that referenced this issue Dec 1, 2021
kernel: drivers: bcm2835_unicam: Add logging message when a frame is dropped
See: raspberrypi/linux#4748

kernel: staging/bcm2835-codec: Allow a different stride alignment per role
See: raspberrypi/linux#4746

kernel: KMS fixes and ISP pitch fix
See: raspberrypi/linux#4744

kernel: media: rpivid: remove min_buffers_needed from src queue
See: raspberrypi/linux#4745

firmware: board_info: Add upstream dtb names for cm1 & 3
firmware: board_info: Add upstream dtb name for cm4
See: raspberrypi/firmware#1660

firmware: platform: Allow users to disable camera boot HMAC check
See: raspberrypi/firmware#1657

firmware: clock: 2711: Fix potential API issue in 2711 VCO setup

firmware: arm_loader: Enable USB MSD boot mode on Zero 2 W

firmware: isp: Fix Rec.709 colour space problems

userland: raspicam: Check system is running legacy camera stack
See: raspberrypi/userland#713

userland: mmal: Hack to make mmal core register VideoCore components
See: raspberrypi/userland#714
@timg236 timg236 closed this as completed Jan 8, 2024
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