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Groups > linux.debian.bugs.dist > #1028605
| From | Klaus Kudielka <klaus.kudielka@gmail.com> |
|---|---|
| Newsgroups | linux.debian.bugs.dist, linux.debian.kernel |
| Subject | Bug#972221: linux: Please enable CONFIG_GPIO_PCA953X_IRQ on armhf |
| Date | 2020-10-14 20:30 +0200 |
| Message-ID | <AZTHc-6Nk-1@gated-at.bofh.it> (permalink) |
| Organization | linux.* mail to news gateway |
Cross-posted to 2 groups.
Source: linux Severity: wishlist X-Debbugs-Cc: klaus.kudielka@gmail.com On Turris Omnia (Armada 395), SFP cage GPIOs are driven by PCA9538PWR. Without CONFIG_GPIO_PCA953X_IRQ, the SFP driver polls the chip via I2C bus every 100 ms, which IMO is a waste of resources. With the option enabled, the SFP driver enables interrupts, and the I2C bus is calm. With recent kernels, PCA953X support can still be compiled as module even when CONFIG_GPIO_PCA953X_IRQ=y. Minimum impact. So, it would be great if you could enable this option on armhf. Thanks. -- System Information: Debian Release: bullseye/sid APT prefers testing APT policy: (500, 'testing') Architecture: armhf (armv7l) Kernel: Linux 5.8.14-armmp (SMP w/2 CPU threads) Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE not set Shell: /bin/sh linked to /usr/bin/dash Init: systemd (via /run/systemd/system) LSM: AppArmor: enabled
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Bug#972221: linux: Please enable CONFIG_GPIO_PCA953X_IRQ on armhf Klaus Kudielka <klaus.kudielka@gmail.com> - 2020-10-14 20:30 +0200
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