Re: [PATCH v5 05/27] ARM: at91: pm: add sam9x7 SoC init config

[Alexandre Belloni <alexandre.belloni@bootlin.com>]

On 03/07/2024 15:57:02+0530, Varshini Rajendran wrote:
> Add SoC init config for sam9x7 family.
> 
> Signed-off-by: Varshini Rajendran <varshini.rajendran@microchip.com>
> ---
> Changes in v5:
> - Removed unnecessary header file.
> - Added a space in the return type for clarity.
> ---
>  arch/arm/mach-at91/Makefile |  1 +
>  arch/arm/mach-at91/sam9x7.c | 33 +++++++++++++++++++++++++++++++++
>  2 files changed, 34 insertions(+)
>  create mode 100644 arch/arm/mach-at91/sam9x7.c
> 
> diff --git a/arch/arm/mach-at91/Makefile b/arch/arm/mach-at91/Makefile
> index 794bd12ab0a8..7d8a7bc44e65 100644
> --- a/arch/arm/mach-at91/Makefile
> +++ b/arch/arm/mach-at91/Makefile
> @@ -7,6 +7,7 @@
>  obj-$(CONFIG_SOC_AT91RM9200)	+= at91rm9200.o
>  obj-$(CONFIG_SOC_AT91SAM9)	+= at91sam9.o
>  obj-$(CONFIG_SOC_SAM9X60)	+= sam9x60.o
> +obj-$(CONFIG_SOC_SAM9X7)	+= sam9x7.o
>  obj-$(CONFIG_SOC_SAMA5)		+= sama5.o sam_secure.o
>  obj-$(CONFIG_SOC_SAMA7)		+= sama7.o
>  obj-$(CONFIG_SOC_SAMV7)		+= samv7.o
> diff --git a/arch/arm/mach-at91/sam9x7.c b/arch/arm/mach-at91/sam9x7.c
> new file mode 100644
> index 000000000000..e1ff30b5b09b
> --- /dev/null
> +++ b/arch/arm/mach-at91/sam9x7.c
> @@ -0,0 +1,33 @@
> +// SPDX-License-Identifier: GPL-2.0+
> +/*
> + * Setup code for SAM9X7.
> + *
> + * Copyright (C) 2023 Microchip Technology Inc. and its subsidiaries
> + *
> + * Author: Varshini Rajendran <varshini.rajendran@microchip.com>
> + */
> +
> +#include <linux/of.h>
> +#include <linux/of_platform.h>
> +
> +#include <asm/mach/arch.h>
> +
> +#include "generic.h"
> +
> +static void __init sam9x7_init(void)
> +{
> +	of_platform_default_populate(NULL, NULL, NULL);

Can you check whether this call is actually needed to boot the platform?

> +
> +	sam9x7_pm_init();
> +}
> +
> +static const char * const sam9x7_dt_board_compat[] __initconst = {
> +	"microchip,sam9x7",
> +	NULL
> +};
> +
> +DT_MACHINE_START(sam9x7_dt, "Microchip SAM9X7")
> +	/* Maintainer: Microchip */
> +	.init_machine	= sam9x7_init,
> +	.dt_compat	= sam9x7_dt_board_compat,
> +MACHINE_END
> -- 
> 2.25.1
> 

-- 
Alexandre Belloni, co-owner and COO, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com