linux-kernel - Re: [PATCH v2 3/3] ARM: dts: dra7: Add syscon-pllreset syscon to SATA PHY

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Message-ID: <55A64253.100@ti.com>
Date:	Wed, 15 Jul 2015 16:51:55 +0530
From:	Kishon Vijay Abraham I <kishon@...com>
To:	Roger Quadros <rogerq@...com>, <tony@...mide.com>
CC:	<nm@...com>, <nsekhar@...com>, <balbi@...com>,
	<grygorii.strashko@...com>, <linux-kernel@...r.kernel.org>,
	<linux-omap@...r.kernel.org>, Tero Kristo <t-kristo@...com>
Subject: Re: [PATCH v2 3/3] ARM: dts: dra7: Add syscon-pllreset syscon to
 SATA PHY

Hi Roger,

On Tuesday 02 June 2015 02:40 PM, Roger Quadros wrote:
> This register is required to be passed to the SATA PHY driver
> to workaround errata i783 (SATA Lockup After SATA DPLL Unlock/Relock).
> 
> Signed-off-by: Roger Quadros <rogerq@...com>
> Signed-off-by: Sekhar Nori <nsekhar@...com>
> ---
>  arch/arm/boot/dts/dra7.dtsi | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/arch/arm/boot/dts/dra7.dtsi b/arch/arm/boot/dts/dra7.dtsi
> index f03a091..260f300 100644
> --- a/arch/arm/boot/dts/dra7.dtsi
> +++ b/arch/arm/boot/dts/dra7.dtsi
> @@ -1135,6 +1135,7 @@
>  				ctrl-module = <&omap_control_sata>;
>  				clocks = <&sys_clkin1>, <&sata_ref_clk>;
>  				clock-names = "sysclk", "refclk";
> +				syscon-pllreset = <&dra7_ctrl_core 0x3fc>;

I think all users of syscon should be made child node of scm_conf. Tony and
Tero, is that right?

If so, then we might have to modify the driver too.

Cheers
Kishon
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