linux-kernel - Re: [PATCH v2 2/2] irqchip: add support for BCM6345 external interrupt controller

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Date:   Wed, 24 Feb 2021 08:08:28 +0100
From:   Álvaro Fernández Rojas <noltari@...il.com>
To:     Florian Fainelli <f.fainelli@...il.com>
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        Marc Zyngier <maz@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Jonas Gorski <jonas.gorski@...il.com>,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        bcm-kernel-feedback-list@...adcom.com, linux-mips@...r.kernel.org
Subject: Re: [PATCH v2 2/2] irqchip: add support for BCM6345 external
 interrupt controller

Hi Florian,

> El 24 feb 2021, a las 4:43, Florian Fainelli <f.fainelli@...il.com> escribió:
> 
> 
> 
> On 2/23/2021 12:43 PM, Álvaro Fernández Rojas wrote:
>> This interrupt controller is present on bcm63xx SoCs in order to generate
>> interrupts based on GPIO status changes.
>> 
>> Signed-off-by: Álvaro Fernández Rojas <noltari@...il.com>
>> Signed-off-by: Jonas Gorski <jonas.gorski@...il.com>
>> ---
> 
> [snip]
>> +static int __init bcm6345_ext_intc_of_init(struct device_node *node,
>> +					   struct device_node *parent)
>> +{
>> +	int num_irqs, ret = -EINVAL;
>> +	unsigned i;
>> +	void __iomem *base;
>> +	int irqs[MAX_IRQS] = { 0 };
>> +	u32 shift;
>> +	bool toggle_clear_on_ack = false;
>> +
>> +	num_irqs = of_irq_count(node);
>> +
>> +	if (!num_irqs || num_irqs > MAX_IRQS)
>> +		return -EINVAL;
>> +
>> +	if (of_property_read_u32(node, "brcm,field-width", &shift))
>> +		shift = 4;
> 
> This property is not documented in the binding, other than that:

Nice catch, I will add it in next version.

> 
> Reviewed-by: Florian Fainelli <f.fainelli@...il.com>
> -- 
> Florian