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Subject: Re: [PATCH 2/8] ARM: OMAP2+: Remove unconfigured midlemode for am3
 lcdc
To:     Tony Lindgren <tony@atomide.com>, <linux-omap@vger.kernel.org>,
        Jyri Sarha <jsarha@ti.com>
CC:     Dave Gerlach <d-gerlach@ti.com>, Faiz Abbas <faiz_abbas@ti.com>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Keerthy <j-keerthy@ti.com>, Nishanth Menon <nm@ti.com>,
        Peter Ujfalusi <peter.ujfalusi@ti.com>,
        Roger Quadros <rogerq@ti.com>, Tero Kristo <t-kristo@ti.com>,
        <linux-kernel@vger.kernel.org>,
        <linux-arm-kernel@lists.infradead.org>
References: <20190723112811.44381-1-tony@atomide.com>
 <20190723112811.44381-3-tony@atomide.com>
From:   Suman Anna <s-anna@ti.com>
Message-ID: <bcc130a5-f7e0-e182-9f4b-5a48fc3d6e17@ti.com>
Date:   Tue, 23 Jul 2019 14:03:12 -0500
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+ Jyri

On 7/23/19 6:28 AM, Tony Lindgren wrote:
> We currently get a warning for lcdc because of a difference
> with dts provided configuration compared to the legacy platform
> data. This is because lcdc has SYSC_HAS_MIDLEMODE configured in
> the platform data without configuring the modes.

Hi Tony,
While I understand that you are trying to match the DT data with the
existing legacy data, do you know if there was a reason why this was
omitted in the first place? Should we be really adding the MSTANDBY_
flags and fix up the DTS node accordingly? I tried looking through the
git log, and the initial commit itself didn't add the MSTANDBY_ flags
but used the SYSC_HAS_MIDLEMODE.

Jyri,
Do you know the history?

regards
Suman

> 
> Let's fix the warning by removing SYSC_HAS_MIDLEMODE. Note that
> the am335x TRM lists SYSC_HAS_MIDLEMODE, but it is unused.


> 
> Signed-off-by: Tony Lindgren <tony@atomide.com>
> ---
>  arch/arm/mach-omap2/omap_hwmod_33xx_data.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/arm/mach-omap2/omap_hwmod_33xx_data.c b/arch/arm/mach-omap2/omap_hwmod_33xx_data.c
> --- a/arch/arm/mach-omap2/omap_hwmod_33xx_data.c
> +++ b/arch/arm/mach-omap2/omap_hwmod_33xx_data.c
> @@ -231,7 +231,7 @@ static struct omap_hwmod am33xx_control_hwmod = {
>  static struct omap_hwmod_class_sysconfig lcdc_sysc = {
>  	.rev_offs	= 0x0,
>  	.sysc_offs	= 0x54,
> -	.sysc_flags	= (SYSC_HAS_SIDLEMODE | SYSC_HAS_MIDLEMODE),
> +	.sysc_flags	= SYSC_HAS_SIDLEMODE,
>  	.idlemodes	= (SIDLE_FORCE | SIDLE_NO | SIDLE_SMART),
>  	.sysc_fields	= &omap_hwmod_sysc_type2,
>  };
>