netdev - Re: [PATCH 08/21] ARM: at91: pm: add support for sam9x7 soc family

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Message-ID: <76b3a9b1-b410-d861-1824-f644a3fce7de@microchip.com>
Date: Thu, 15 Jun 2023 07:42:31 +0000
From: <Claudiu.Beznea@...rochip.com>
To: <Varshini.Rajendran@...rochip.com>, <tglx@...utronix.de>,
	<maz@...nel.org>, <robh+dt@...nel.org>, <krzysztof.kozlowski+dt@...aro.org>,
	<conor+dt@...nel.org>, <Nicolas.Ferre@...rochip.com>,
	<alexandre.belloni@...tlin.com>, <davem@...emloft.net>,
	<edumazet@...gle.com>, <kuba@...nel.org>, <pabeni@...hat.com>,
	<gregkh@...uxfoundation.org>, <linux@...linux.org.uk>,
	<mturquette@...libre.com>, <sboyd@...nel.org>, <sre@...nel.org>,
	<broonie@...nel.org>, <arnd@...db.de>, <gregory.clement@...tlin.com>,
	<sudeep.holla@....com>, <Balamanikandan.Gunasundar@...rochip.com>,
	<Mihai.Sain@...rochip.com>, <linux-kernel@...r.kernel.org>,
	<devicetree@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>,
	<netdev@...r.kernel.org>, <linux-usb@...r.kernel.org>,
	<linux-clk@...r.kernel.org>, <linux-pm@...r.kernel.org>
CC: <Hari.PrasathGE@...rochip.com>, <Cristian.Birsan@...rochip.com>,
	<Durai.ManickamKR@...rochip.com>, <Manikandan.M@...rochip.com>,
	<Dharma.B@...rochip.com>, <Nayabbasha.Sayed@...rochip.com>,
	<Balakrishnan.S@...rochip.com>
Subject: Re: [PATCH 08/21] ARM: at91: pm: add support for sam9x7 soc family

On 03.06.2023 23:02, Varshini Rajendran wrote:
> Add support and pm init config for sam9x7 soc
> 
> Signed-off-by: Varshini Rajendran <varshini.rajendran@...rochip.com>

Reviewed-by: Claudiu Beznea <claudiu.beznea@...rochip.com>


> ---
>  arch/arm/mach-at91/generic.h |  2 ++
>  arch/arm/mach-at91/pm.c      | 35 +++++++++++++++++++++++++++++++++++
>  2 files changed, 37 insertions(+)
> 
> diff --git a/arch/arm/mach-at91/generic.h b/arch/arm/mach-at91/generic.h
> index 0c3960a8b3eb..acf0b3c82a30 100644
> --- a/arch/arm/mach-at91/generic.h
> +++ b/arch/arm/mach-at91/generic.h
> @@ -12,6 +12,7 @@
>  extern void __init at91rm9200_pm_init(void);
>  extern void __init at91sam9_pm_init(void);
>  extern void __init sam9x60_pm_init(void);
> +extern void __init sam9x7_pm_init(void);
>  extern void __init sama5_pm_init(void);
>  extern void __init sama5d2_pm_init(void);
>  extern void __init sama7_pm_init(void);
> @@ -19,6 +20,7 @@ extern void __init sama7_pm_init(void);
>  static inline void __init at91rm9200_pm_init(void) { }
>  static inline void __init at91sam9_pm_init(void) { }
>  static inline void __init sam9x60_pm_init(void) { }
> +static inline void __init sam9x7_pm_init(void) { }
>  static inline void __init sama5_pm_init(void) { }
>  static inline void __init sama5d2_pm_init(void) { }
>  static inline void __init sama7_pm_init(void) { }
> diff --git a/arch/arm/mach-at91/pm.c b/arch/arm/mach-at91/pm.c
> index 60dc56d8acfb..43a77ae0c38c 100644
> --- a/arch/arm/mach-at91/pm.c
> +++ b/arch/arm/mach-at91/pm.c
> @@ -232,6 +232,17 @@ static const struct of_device_id sama7g5_ws_ids[] = {
>  	{ /* sentinel */ }
>  };
>  
> +static const struct of_device_id sam9x7_ws_ids[] = {
> +	{ .compatible = "microchip,sam9x60-rtc",	.data = &ws_info[1] },
> +	{ .compatible = "atmel,at91rm9200-ohci",	.data = &ws_info[2] },
> +	{ .compatible = "usb-ohci",			.data = &ws_info[2] },
> +	{ .compatible = "atmel,at91sam9g45-ehci",	.data = &ws_info[2] },
> +	{ .compatible = "usb-ehci",			.data = &ws_info[2] },
> +	{ .compatible = "microchip,sam9x60-rtt",	.data = &ws_info[4] },
> +	{ .compatible = "microchip,sam9x7-gem",		.data = &ws_info[5] },
> +	{ /* sentinel */ }
> +};
> +
>  static int at91_pm_config_ws(unsigned int pm_mode, bool set)
>  {
>  	const struct wakeup_source_info *wsi;
> @@ -1133,6 +1144,7 @@ static const struct of_device_id gmac_ids[] __initconst = {
>  	{ .compatible = "atmel,sama5d2-gem" },
>  	{ .compatible = "atmel,sama5d29-gem" },
>  	{ .compatible = "microchip,sama7g5-gem" },
> +	{ .compatible = "microchip,sam9x7-gem" },
>  	{ },
>  };
>  
> @@ -1360,6 +1372,7 @@ static const struct of_device_id atmel_pmc_ids[] __initconst = {
>  	{ .compatible = "atmel,sama5d2-pmc", .data = &pmc_infos[1] },
>  	{ .compatible = "microchip,sam9x60-pmc", .data = &pmc_infos[4] },
>  	{ .compatible = "microchip,sama7g5-pmc", .data = &pmc_infos[5] },
> +	{ .compatible = "microchip,sam9x7-pmc", .data = &pmc_infos[4] },
>  	{ /* sentinel */ },
>  };
>  
> @@ -1497,6 +1510,28 @@ void __init sam9x60_pm_init(void)
>  	soc_pm.config_pmc_ws = at91_sam9x60_config_pmc_ws;
>  }
>  
> +void __init sam9x7_pm_init(void)
> +{
> +	static const int modes[] __initconst = {
> +		AT91_PM_STANDBY, AT91_PM_ULP0,
> +	};
> +
> +	int ret;
> +
> +	if (!IS_ENABLED(CONFIG_SOC_SAM9X7))
> +		return;
> +
> +	at91_pm_modes_validate(modes, ARRAY_SIZE(modes));
> +	ret = at91_dt_ramc(false);
> +	if (ret)
> +		return;
> +
> +	at91_pm_init(NULL);
> +
> +	soc_pm.ws_ids = sam9x7_ws_ids;
> +	soc_pm.config_pmc_ws = at91_sam9x60_config_pmc_ws;
> +}
> +
>  void __init at91sam9_pm_init(void)
>  {
>  	int ret;