linux-kernel - Re: [PATCH 2/2] irqchip/meson-gpio: Add support for Meson-G12A SoC

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Date:   Tue, 4 Dec 2018 09:51:28 +0800
From:   Xingyu Chen <xingyu.chen@...ogic.com>
To:     Neil Armstrong <narmstrong@...libre.com>,
        Jerome Brunet <jbrunet@...libre.com>,
        Marc Zyngier <marc.zyngier@....com>,
        Jason Cooper <jason@...edaemon.net>,
        Thomas Gleixner <tglx@...utronix.de>,
        Kevin Hilman <khilman@...libre.com>
CC:     Rob Herring <robh@...nel.org>,
        Jianxin Pan <jianxin.pan@...ogic.com>,
        <linux-kernel@...r.kernel.org>, Carlo Caione <carlo@...one.org>,
        <linux-amlogic@...ts.infradead.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        Heiner Kallweit <hkallweit1@...il.com>
Subject: Re: [PATCH 2/2] irqchip/meson-gpio: Add support for Meson-G12A SoC


On 2018/12/3 18:06, Neil Armstrong wrote:
> On 03/12/2018 10:28, Xingyu Chen wrote:
>>
>>
>> On 2018/12/3 17:19, Jerome Brunet wrote:
>>> On Mon, 2018-12-03 at 14:13 +0800, Xingyu Chen wrote:
>>>> The Meson-G12A SoC uses the same GPIO interrupt controller IP block as the
>>>> other Meson SoCs, A totle of 100 pins can be spied on, which is the sum of:
>>>>
>>>> - 223:100 undefined (no interrupt)
>>>> - 99:97   3 pins on bank GPIOE
>>>> - 96:77   20 pins on bank GPIOX
>>>> - 76:61   16 pins on bank GPIOA
>>>> - 60:53   8 pins on bank GPIOC
>>>> - 52:37   16 pins on bank BOOT
>>>> - 36:28   9 pins on bank GPIOH
>>>> - 27:12   16 pins on bank GPIOZ
>>>> - 11:0    12 pins in the AO domain
>>>>
>>>> Signed-off-by: Xingyu Chen <xingyu.chen@...ogic.com>
>>>> Signed-off-by: Jianxin Pan <jianxin.pan@...ogic.com>
>>>> ---
>>>>    drivers/irqchip/irq-meson-gpio.c | 5 +++++
>>>>    1 file changed, 5 insertions(+)
>>>>
>>>> diff --git a/drivers/irqchip/irq-meson-gpio.c b/drivers/irqchip/irq-meson-
>>>> gpio.c
>>>> index 7b531fd075b8..971e8dea069a 100644
>>>> --- a/drivers/irqchip/irq-meson-gpio.c
>>>> +++ b/drivers/irqchip/irq-meson-gpio.c
>>>> @@ -67,12 +67,17 @@ static const struct meson_gpio_irq_params axg_params = {
>>>>        .nr_hwirq = 100,
>>>>    };
>>>>    +static const struct meson_gpio_irq_params g12a_params = {
>>>> +    .nr_hwirq = 100,
>>>> +};
>>>> +
>>>
>>> Same comment as on i2c, the g12 seems compatible with the axg.
>>> Is this patchset patchset really necessary ?
>>>
>> Although the total number of pins is the same as the Meson-AXG SoC, the gpio banks and irq numbers are different. To avoid confusion on use, i think the new compatible string is needed.
> 
> OK for the new compatible, but you can re-use the same struct like for i2c.
> 
> Neil
> 
Thanks for your comment, I will fix it in the next version.

>>>>    static const struct of_device_id meson_irq_gpio_matches[] = {
>>>>        { .compatible = "amlogic,meson8-gpio-intc", .data = &meson8_params },
>>>>        { .compatible = "amlogic,meson8b-gpio-intc", .data = &meson8b_params
>>>> },
>>>>        { .compatible = "amlogic,meson-gxbb-gpio-intc", .data = &gxbb_params
>>>> },
>>>>        { .compatible = "amlogic,meson-gxl-gpio-intc", .data = &gxl_params },
>>>>        { .compatible = "amlogic,meson-axg-gpio-intc", .data = &axg_params },
>>>> +    { .compatible = "amlogic,meson-g12a-gpio-intc", .data = &g12a_params
>>>> },
>>>>        { }
>>>>    };
>>>>    
>>>
>>>
>>> .
>>>
>>
>> _______________________________________________
>> linux-amlogic mailing list
>> linux-amlogic@...ts.infradead.org
>> http://lists.infradead.org/mailman/listinfo/linux-amlogic
> 
> .
>

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