linux-kernel - Re: [PATCH v2 2/3] pinctrl: meson: Add driver support for Amlogic A4 SoCs

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Message-ID: <1c054eb4-9ac1-4965-8847-d851b9fb1131@amlogic.com>
Date: Tue, 15 Oct 2024 15:54:44 +0800
From: Xianwei Zhao <xianwei.zhao@...ogic.com>
To: Krzysztof Kozlowski <krzk@...nel.org>
Cc: Linus Walleij <linus.walleij@...aro.org>, Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
 <conor+dt@...nel.org>, Neil Armstrong <neil.armstrong@...aro.org>,
 Kevin Hilman <khilman@...libre.com>, Jerome Brunet <jbrunet@...libre.com>,
 Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
 Bartosz Golaszewski <brgl@...ev.pl>, linux-gpio@...r.kernel.org,
 devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
 linux-amlogic@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 2/3] pinctrl: meson: Add driver support for Amlogic A4
 SoCs

Hi Krzysztof,
     Thanks for your reply.

On 2024/10/15 14:01, Krzysztof Kozlowski wrote:
> [ EXTERNAL EMAIL ]
> 
> On Mon, Oct 14, 2024 at 05:05:52PM +0800, Xianwei Zhao wrote:
>> Add a new pinctrl driver for Amlogic A4 SoCs which share
>> the same register layout as the previous Amlogic S4.
>>
>> Signed-off-by: Xianwei Zhao <xianwei.zhao@...ogic.com>
>> ---
>>   drivers/pinctrl/meson/Kconfig              |    6 +
>>   drivers/pinctrl/meson/Makefile             |    1 +
>>   drivers/pinctrl/meson/pinctrl-amlogic-a4.c | 1176 ++++++++++++++++++++++++++++
>>   3 files changed, 1183 insertions(+)
>>
>> diff --git a/drivers/pinctrl/meson/Kconfig b/drivers/pinctrl/meson/Kconfig
>> index cc397896762c..3e90bb5ec442 100644
>> --- a/drivers/pinctrl/meson/Kconfig
>> +++ b/drivers/pinctrl/meson/Kconfig
>> @@ -67,6 +67,12 @@ config PINCTRL_MESON_S4
>>        select PINCTRL_MESON_AXG_PMX
>>        default y
>>
>> +config PINCTRL_AMLOGIC_A4
>> +     tristate "Amlogic A4 SoC pinctrl driver"
>> +     depends on ARM64
>> +     select PINCTRL_MESON_AXG_PMX
>> +     default y
>> +
>>   config PINCTRL_AMLOGIC_C3
>>        tristate "Amlogic C3 SoC pinctrl driver"
>>        depends on ARM64
>> diff --git a/drivers/pinctrl/meson/Makefile b/drivers/pinctrl/meson/Makefile
>> index 9e538b9ffb9b..c92a65a83344 100644
>> --- a/drivers/pinctrl/meson/Makefile
>> +++ b/drivers/pinctrl/meson/Makefile
>> @@ -10,5 +10,6 @@ obj-$(CONFIG_PINCTRL_MESON_AXG) += pinctrl-meson-axg.o
>>   obj-$(CONFIG_PINCTRL_MESON_G12A) += pinctrl-meson-g12a.o
>>   obj-$(CONFIG_PINCTRL_MESON_A1) += pinctrl-meson-a1.o
>>   obj-$(CONFIG_PINCTRL_MESON_S4) += pinctrl-meson-s4.o
>> +obj-$(CONFIG_PINCTRL_AMLOGIC_A4) += pinctrl-amlogic-a4.o
>>   obj-$(CONFIG_PINCTRL_AMLOGIC_C3) += pinctrl-amlogic-c3.o
>>   obj-$(CONFIG_PINCTRL_AMLOGIC_T7) += pinctrl-amlogic-t7.o
>> diff --git a/drivers/pinctrl/meson/pinctrl-amlogic-a4.c b/drivers/pinctrl/meson/pinctrl-amlogic-a4.c
>> new file mode 100644
>> index 000000000000..dee1ae43edb5
>> --- /dev/null
>> +++ b/drivers/pinctrl/meson/pinctrl-amlogic-a4.c
>> @@ -0,0 +1,1176 @@
>> +// SPDX-License-Identifier: (GPL-2.0-only OR MIT)
>> +/*
>> + * Pin controller and GPIO driver for Amlogic A4 SoC.
>> + *
>> + * Copyright (c) 2024 Amlogic, Inc. All rights reserved.
>> + * Author: Xianwei Zhao <xianwei.zhao@...ogic.com>
>> + *         Huqiang Qin <huqiang.qin@...ogic.com>
>> + */
>> +
>> +#include <dt-bindings/gpio/amlogic-a4-gpio.h>
> 
> I do not see any usage of it.
> 

The header file "amlogic-a4-gpio.h"  is used by AMLOGIC_PIN and 
GPIO_GROUP_V2, The code used  is  AMLOGIC_GPIO().
This is binding definition.

> Best regards,
> Krzysztof
>