linux-kernel - Re: [PATCH V2 4/5] MIPS: Add support for the IMG Pistachio SoC

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Date:	Mon, 16 Mar 2015 11:04:43 +0000
From:	James Hogan <james.hogan@...tec.com>
To:	Andrew Bresticker <abrestic@...omium.org>,
	Ralf Baechle <ralf@...ux-mips.org>
CC:	<devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<linux-mips@...ux-mips.org>,
	Ezequiel Garcia <ezequiel.garcia@...tec.com>,
	James Hartley <james.hartley@...tec.com>
Subject: Re: [PATCH V2 4/5] MIPS: Add support for the IMG Pistachio SoC

Hi Andrew,

On 13/03/15 22:54, Andrew Bresticker wrote:
> diff --git a/arch/mips/Kbuild.platforms b/arch/mips/Kbuild.platforms
> index e5fc463..2298baa 100644
> --- a/arch/mips/Kbuild.platforms
> +++ b/arch/mips/Kbuild.platforms
> @@ -23,6 +23,7 @@ platforms += netlogic
>  platforms += paravirt
>  platforms += pmcs-msp71xx
>  platforms += pnx833x
> +platforms += pistachio

Please keep this sorted alphabetically.

>  platforms += ralink
>  platforms += rb532
>  platforms += sgi-ip22

...

> diff --git a/arch/mips/include/asm/mach-pistachio/gpio.h b/arch/mips/include/asm/mach-pistachio/gpio.h
> new file mode 100644
> index 0000000..6c1649c
> --- /dev/null
> +++ b/arch/mips/include/asm/mach-pistachio/gpio.h
> @@ -0,0 +1,21 @@
> +/*
> + * Pistachio IRQ setup
> + *
> + * Copyright (C) 2014 Google, Inc.
> + *
> + * This program is free software; you can redistribute it and/or modify it
> + * under the terms and conditions of the GNU General Public License,
> + * version 2, as published by the Free Software Foundation.
> + */
> +
> +#ifndef __ASM_MACH_PISTACHIO_GPIO_H
> +#define __ASM_MACH_PISTACHIO_GPIO_H
> +
> +#include <asm-generic/gpio.h>
> +
> +#define gpio_get_value	__gpio_get_value
> +#define gpio_set_value	__gpio_set_value
> +#define gpio_cansleep	__gpio_cansleep
> +#define gpio_to_irq	__gpio_to_irq

Makes me wish ARCH_HAVE_CUSTOM_GPIO_H could be selected on a
per-platform basis :P. Never mind.

> +
> +#endif /* __ASM_MACH_PISTACHIO_GPIO_H */

...

> diff --git a/arch/mips/pistachio/init.c b/arch/mips/pistachio/init.c
> new file mode 100644
> index 0000000..6b297d5
> --- /dev/null
> +++ b/arch/mips/pistachio/init.c
> @@ -0,0 +1,131 @@

...

> +static int __init plat_of_setup(void)
> +{
> +	if (!of_have_populated_dt())
> +		panic("Device tree not present");
> +
> +	if (of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL))
> +		panic("Failed to populate DT\n");

No need for newline in panic message.

> +
> +	return 0;
> +}
> +arch_initcall(plat_of_setup);

...

Otherwise from what I can tell this patch looks good to me (though I
probably wouldn't know if something important was missing from it).

Thanks!
James


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