linux-kernel - Re: [PATCH v5 06/20] mfd: axp20x: Allow AXP chips without interrupt lines

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Date:   Tue, 2 Feb 2021 08:12:29 +0000
From:   Lee Jones <lee.jones@...aro.org>
To:     Andre Przywara <andre.przywara@....com>
Cc:     Maxime Ripard <mripard@...nel.org>, Chen-Yu Tsai <wens@...e.org>,
        Jernej Skrabec <jernej.skrabec@...l.net>,
        Samuel Holland <samuel@...lland.org>,
        Icenowy Zheng <icenowy@...c.io>, Rob Herring <robh@...nel.org>,
        Clément Péron <peron.clem@...il.com>,
        Shuosheng Huang <huangshuosheng@...winnertech.com>,
        Yangtao Li <tiny.windzz@...il.com>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-sunxi@...glegroups.com
Subject: Re: [PATCH v5 06/20] mfd: axp20x: Allow AXP chips without interrupt
 lines

On Wed, 27 Jan 2021, Andre Przywara wrote:

> Currently the AXP chip requires to have its IRQ line connected to some
> interrupt controller, and will fail probing when this is not the case.
> 
> On a new Allwinner SoC (H616) there is no NMI pin anymore, and at
> least one board does not connect the AXP's IRQ pin to anything else,
> so the interrupt functionality of the AXP chip is simply not available.
> 
> Check whether the interrupt line number returned by the platform code is
> valid, before trying to register the irqchip. If not, we skip this
> registration, to avoid the driver to bail out completely.
> 
> Signed-off-by: Andre Przywara <andre.przywara@....com>
> ---
>  drivers/mfd/axp20x.c | 17 +++++++++++------
>  1 file changed, 11 insertions(+), 6 deletions(-)

For my own reference (apply this as-is to your sign-off block):

  Acked-for-MFD-by: Lee Jones <lee.jones@...aro.org>

-- 
Lee Jones [李琼斯]
Senior Technical Lead - Developer Services
Linaro.org │ Open source software for Arm SoCs
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