[PATCH] dt-bindings: i2c: aspeed: Drop stray '#interrupt-cells'

Thierry Reding thierry.reding at gmail.com
Tue Dec 7 19:49:11 AEDT 2021

On Mon, Dec 06, 2021 at 11:42:37AM -0600, Rob Herring wrote:
> '#interrupt-cells' is not documented which causes a warning when
> 'unevaluatedProperties' is implemented. Unless the I2C controller is
> also an interrupt controller, '#interrupt-cells' is not valid. This
> doesn't appear to be the case from the driver, so just remove it from
> the example.
> Cc: Brendan Higgins <brendanhiggins at google.com>
> Cc: Benjamin Herrenschmidt <benh at kernel.crashing.org>
> Cc: Joel Stanley <joel at jms.id.au>
> Cc: Andrew Jeffery <andrew at aj.id.au>
> Cc: Rayn Chen <rayn_chen at aspeedtech.com>
> Cc: linux-i2c at vger.kernel.org
> Cc: openbmc at lists.ozlabs.org
> Cc: linux-arm-kernel at lists.infradead.org
> Cc: linux-aspeed at lists.ozlabs.org
> Signed-off-by: Rob Herring <robh at kernel.org>
> ---
>  Documentation/devicetree/bindings/i2c/aspeed,i2c.yaml | 1 -
>  1 file changed, 1 deletion(-)

Interestingly I have a patch for this as well but it does the opposite
and adds interrupt-controller and #interrupt-cells. Upon closer
inspection I was tricked into this because the i2c-aspeed driver
includes linux/irqchip/chained_irq.h and linux/irqdomain.h and therefore
I assumed that it was indeed implementing an interrupt controller. But
none of the symbols in those files are ever used, so your version seems
to be correct.

Reviewed-by: Thierry Reding <treding at nvidia.com>
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