Investigate adding support for Toshiba TC358749 HDMI to CSI2 bridge #4235
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Indeed it appears that TC358749 has been declared End Of Life (EOL). Discussion on the forums at https://www.raspberrypi.org/forums/viewtopic.php?f=38&t=307136&p=1840631 I see of no beneficial way to drive '840 with more than the 4 CSI2 data lanes on the Pi as it has one 2-lane and one 4-lane interface. The '840 will want the same number of lanes per interface, so that would mean both have to run in 2-lane mode. In which case why bother with 2 2-lane interfaces instead of 1 4-lane instance. |
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https://www.youtube.com/watch?v=Kp6YQF6duwg&list=PLcc7zFstBLj8g5XBTOIDzJoNGT9VmiI0T
hello，I fixed the sound in the new board, and the resolution is up to 1080p60fps
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发件人: "raspberrypi/linux" ***@***.***>;
发送时间: 2021年3月25日(星期四) 晚上10:17
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主题: Re: [raspberrypi/linux] Investigate adding support for Toshiba TC358749 HDMI to CSI2 bridge (#4235)
Indeed it appears that TC358749 has been declared End Of Life (EOL).
Discussion on the forums at https://www.raspberrypi.org/forums/viewtopic.php?f=38&t=307136&p=1840631
TC358840 has already had a driver submitted to mainline but needing review.
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Hans Verkuil (one of the V4L2 maintainers) is involved in this driver, and has an active kernel tree at https://git.linuxtv.org/hverkuil/media_tree.git/log/?h=tc358840
I see of no beneficial way to drive '840 with more than the 4 CSI2 data lanes on the Pi as it has one 2-lane and one 4-lane interface. The '840 will want the same number of lanes per interface, so that would mean both have to run in 2-lane mode. In which case why bother with 2 2-lane interfaces instead of 1 4-lane instance.
There may be other boards that can handle it, but not the Pi. Routing CSITX1 out to a second connector may be worthwhile, to support those boards.
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hello:
I fixed the image conversion function of tc358743 I made before. This is the GitHub link：
https://github.com/ThomasVon2021/Raspberry-HDMI-CSI-I2C.
…------------------ 原始邮件 ------------------
发件人: "raspberrypi/linux" ***@***.***>;
发送时间: 2021年3月25日(星期四) 晚上10:17
***@***.***>;
***@***.******@***.***>;
主题: Re: [raspberrypi/linux] Investigate adding support for Toshiba TC358749 HDMI to CSI2 bridge (#4235)
Indeed it appears that TC358749 has been declared End Of Life (EOL).
Discussion on the forums at https://www.raspberrypi.org/forums/viewtopic.php?f=38&t=307136&p=1840631
TC358840 has already had a driver submitted to mainline but needing review.
***@***.***/
Hans Verkuil (one of the V4L2 maintainers) is involved in this driver, and has an active kernel tree at https://git.linuxtv.org/hverkuil/media_tree.git/log/?h=tc358840
I see of no beneficial way to drive '840 with more than the 4 CSI2 data lanes on the Pi as it has one 2-lane and one 4-lane interface. The '840 will want the same number of lanes per interface, so that would mean both have to run in 2-lane mode. In which case why bother with 2 2-lane interfaces instead of 1 4-lane instance.
There may be other boards that can handle it, but not the Pi. Routing CSITX1 out to a second connector may be worthwhile, to support those boards.
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Closing as unlikely to be done and the chip is EOL. |
From 6by9/raspi_tc358743#2, TC358743 has been superceded by TC358749 which adds in a deinterlacer and scaler.
https://github.com/54shady/qop_kernel/tree/master/drivers/media/i2c includes a fixed up version of the driver to support both chips, although not using many of the extra features of the '749.
Look at pulling these changes in and upstreaming them.
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