linux-kernel - Re: [PATCH 2/2] pinctrl: Add driver support for Amlogic C3 SoCs

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Message-ID: <ZKazwMpmsNzBuWA7@smile.fi.intel.com>
Date:   Thu, 6 Jul 2023 15:29:52 +0300
From:   Andy Shevchenko <andy@...nel.org>
To:     Huqiang Qin <huqiang.qin@...ogic.com>
Cc:     linus.walleij@...aro.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
        neil.armstrong@...aro.org, khilman@...libre.com,
        jbrunet@...libre.com, martin.blumenstingl@...glemail.com,
        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 2/2] pinctrl: Add driver support for Amlogic C3 SoCs

On Thu, Jul 06, 2023 at 07:45:22PM +0800, Huqiang Qin wrote:
> Add new pinctrl driver for Amlogic C3 SoCs which share the

a new

> same register layout as the previous Amloigc S4

Missing period at the end.

...

> +config PINCTRL_AMLOGIC_C3
> +	tristate "Amlogic C3 SoC pinctrl driver"
> +	depends on ARM64
> +	select PINCTRL_MESON_AXG_PMX
> +	default y

This default seems a bad cargo cult. Why ARM64 kernel should have all them be
opt-out, instead of opt-in? Shouldn't this be a distro problem?

...

> +	MESON_PIN(GPIO_TEST_N)

Is it real one?

> +};

...

> +	/* Bank A func6 */
> +	GROUP(spi_a_mosi_a,		6),
> +	GROUP(gen_clk_a4,		6),
> +	GROUP(clk12_24_a,		6)

Leave trailing comma here as it's not a terminator.

...

> +static const char * const i2c2_groups[] = {
> +	"i2c2_sda", "i2c2_scl"

Ditto.

> +};
> +
> +static const char * const i2c3_groups[] = {
> +	"i2c3_sda_c", "i2c3_scl_c",
> +	"i2c3_sda_x", "i2c3_scl_x",
> +	"i2c3_sda_d", "i2c3_scl_d"

Ditto.

> +};

...

> +#ifdef CONFIG_OF

Drop this ugly ifdeffery.

> +static const struct of_device_id c3_pinctrl_dt_match[] = {
> +	{
> +		.compatible = "amlogic,c3-periphs-pinctrl",
> +		.data = &c3_periphs_pinctrl_data,
> +	},
> +	{ },

No comma for the terminator.

> +};
> +MODULE_DEVICE_TABLE(of, c3_pinctrl_dt_match);
> +#endif /* CONFIG_OF */
> +
> +static struct platform_driver c3_pinctrl_driver = {
> +	.probe  = meson_pinctrl_probe,
> +	.driver = {
> +		.name = "amlogic-c3-pinctrl",

> +		.of_match_table = of_match_ptr(c3_pinctrl_dt_match),

Drop the rather problematic of_match_ptr().

> +	},
> +};

-- 
With Best Regards,
Andy Shevchenko