linux-kernel - Re: [PATCH v2 2/2] ARM: AM43XX: HWMOD: Add rtc hwmod

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Message-ID: <56C6CB5B.20804@ti.com>
Date:	Fri, 19 Feb 2016 13:29:23 +0530
From:	Keerthy <a0393675@...com>
To:	Paul Walmsley <paul@...an.com>, Keerthy <j-keerthy@...com>
CC:	<tony@...mide.com>, <linux-omap@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	<linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
	<robh+dt@...nel.org>
Subject: Re: [PATCH v2 2/2] ARM: AM43XX: HWMOD: Add rtc hwmod



On Friday 19 February 2016 12:51 PM, Paul Walmsley wrote:
> On Fri, 19 Feb 2016, Keerthy wrote:
>
>> The patch adds rtc hwmod. RTC module The RTC module is physically
>> present on the AM438x SoC used on AM43X-EPOS-EVM, but it is permanently
>> disabled. A secure RTC is used instead on these devices, where needed.
>> . Hence adding it selectively using a seprate list to get RTC Module
>> functional on the other am43x SoCs used on am437x-gp-evm and
>> am437x-sk-evm.
>>
>> Signed-off-by: Keerthy <j-keerthy@...com>
>> ---
>>
>> Changes in v2:
>>
>> Inverted the checking logic to accommodate registering for all
>> the SoCs compatible to am4372 and removed the negating am438x logic
>> to register rtc hwmods as suggested by Paul.
>>
>>   arch/arm/mach-omap2/omap_hwmod_43xx_data.c | 14 +++++++++++++-
>>   1 file changed, 13 insertions(+), 1 deletion(-)
>
> OK thanks; I've queued the following patch for v4.6 or if I get unlucky,
> v4.7.

Thanks Paul!

>
> - Paul
>
> From: Keerthy <j-keerthy@...com>
> Date: Fri, 19 Feb 2016 10:08:55 +0530
> Subject: [PATCH] ARM: AM43XX: hwmod: Add rtc hwmod
>
> The patch registers the rtc hwmod on AM437x chips.  The RTC module is
> physically present on the AM438x SoC used on AM43X-EPOS-EVM, but it is
> permanently disabled. A secure RTC is used instead on these devices,
> where needed. Hence adding it selectively using a separate list to get
> RTC Module functional on the other am43x SoCs used on am437x-gp-evm
> and am437x-sk-evm.
>
> Signed-off-by: Keerthy <j-keerthy@...com>
> [paul@...an.com: cleaned up patch description]
> Signed-off-by: Paul Walmsley <paul@...an.com>
> ---
>   arch/arm/mach-omap2/omap_hwmod_43xx_data.c | 14 +++++++++++++-
>   1 file changed, 13 insertions(+), 1 deletion(-)
>
> diff --git a/arch/arm/mach-omap2/omap_hwmod_43xx_data.c b/arch/arm/mach-omap2/omap_hwmod_43xx_data.c
> index e97a894b5f88..97fd399202dc 100644
> --- a/arch/arm/mach-omap2/omap_hwmod_43xx_data.c
> +++ b/arch/arm/mach-omap2/omap_hwmod_43xx_data.c
> @@ -1020,9 +1020,21 @@ static struct omap_hwmod_ocp_if *am43xx_hwmod_ocp_ifs[] __initdata = {
>   	NULL,
>   };
>
> +static struct omap_hwmod_ocp_if *am43xx_rtc_hwmod_ocp_ifs[] __initdata = {
> +	&am33xx_l4_wkup__rtc,
> +	NULL,
> +};
> +
>   int __init am43xx_hwmod_init(void)
>   {
> +	int ret;
> +
>   	omap_hwmod_am43xx_reg();
>   	omap_hwmod_init();
> -	return omap_hwmod_register_links(am43xx_hwmod_ocp_ifs);
> +	ret = omap_hwmod_register_links(am43xx_hwmod_ocp_ifs);
> +
> +	if (!ret && of_machine_is_compatible("ti,am4372"))
> +		ret = omap_hwmod_register_links(am43xx_rtc_hwmod_ocp_ifs);
> +
> +	return ret;
>   }
>