Re: [PATCH v5 08/12] gpio: add QIXIS FPGA GPIO controller
From: Michael Walle
Date: Mon Sep 22 2025 - 10:34:17 EST
> Add support for the GPIO controller found on some QIXIS FPGAs in
> Layerscape boards such as LX2160ARDB and LS1046AQDS. This driver is
> using gpio-regmap.
>
> A GPIO controller has a maximum of 8 lines (all found in the same
> register). Even within the same controller, the GPIO lines' direction is
> fixed, which mean that both input and output lines are found in the same
> register. This is why the driver also passed to gpio-regmap the newly
> added .fixed_direction_output bitmap to represent the true direction of
> the lines.
>
> Signed-off-by: Ioana Ciornei <ioana.ciornei@xxxxxxx>
> Reviewed-by: Frank Li <Frank.Li@xxxxxxx>
Reviewed-by: Michael Walle <mwalle@xxxxxxxxxx> # for the gpio-regmap part
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