Thread (4 messages) flat view 4 messages, 3 authors, 2021-01-18

Re: [PATCH, v1 1/1] gpio: aspeed: Add gpio base address reading

From: Linus Walleij <hidden>
Date: 2021-01-18 14:44:39
Also in: linux-aspeed, linux-gpio, lkml, openbmc

On Wed, Jan 13, 2021 at 11:38 PM Hongwei Zhang [off-list ref] wrote:
Add gpio base address reading in the driver; in old code, it just
returns -1 to gpio->chip.base.

Fixes: 7ee2d5b4d4340353 ("ARM: dts: nuvoton: Add Fii Kudo system")
Signed-off-by: Hongwei Zhang <redacted>
NAK, sorry.

We never allow the device tree to specify this.

First, it is a Linux-only base so it would have to be a
"linux,..." property.

Even if it is a Linux-only property, it is a bad idea.

Only people using sysfs should have any need to specify global
GPIO numbers. Don't use sysfs. Use the GPIO character device
instead. See further:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/gpio/TODO

Yours,
Linus Walleij

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