linux-kernel - RE: [PATCH v3 1/5] Documentation: dt: binding: fsl: Add 'fsl,ippdexpcr1-alt-reg' property

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Date:   Sat, 10 Oct 2020 01:57:00 +0000
From:   Ran Wang <ran.wang_1@....com>
To:     Rob Herring <robh+dt@...nel.org>
CC:     "linuxppc-dev@...ts.ozlabs.org" <linuxppc-dev@...ts.ozlabs.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Biwen Li <biwen.li@....com>, Ran Wang <ran.wang_1@....com>,
        Leo Li <leoyang.li@....com>, Shawn Guo <shawnguo@...nel.org>
Subject: RE: [PATCH v3 1/5] Documentation: dt: binding: fsl: Add
 'fsl,ippdexpcr1-alt-reg' property

Hi Rob,

On Tuesday, September 29, 2020 4:23 PM, Ran Wang wrote:
> 
> From: Biwen Li <biwen.li@....com>
> 
> The 'fsl,ippdexpcr1-alt-reg' property is used to handle an errata A-008646 on
> LS1021A.
> 
> Signed-off-by: Biwen Li <biwen.li@....com>
> Signed-off-by: Ran Wang <ran.wang_1@....com>
> ---
> Change in v3:
>  - Simplize related proterty definition and rename it.

Could you please comment for this version? Thanks in advance.

Regards,
Ran

> Change in v2:
>  - None
> 
>  Documentation/devicetree/bindings/soc/fsl/rcpm.txt | 12 ++++++++++++
>  1 file changed, 12 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/soc/fsl/rcpm.txt
> b/Documentation/devicetree/bindings/soc/fsl/rcpm.txt
> index 5a33619..62a22fc 100644
> --- a/Documentation/devicetree/bindings/soc/fsl/rcpm.txt
> +++ b/Documentation/devicetree/bindings/soc/fsl/rcpm.txt
> @@ -34,6 +34,9 @@ Chassis Version		Example Chips
>  Optional properties:
>   - little-endian : RCPM register block is Little Endian. Without it RCPM
>     will be Big Endian (default case).
> + - fsl,ippdexpcr1-alt-reg : The property is trying to workaround a
> +   hardware issue (found on SoC LS1021A only), if pressent, RCPM driver
> +   will use SCFG_SPARECR8 as a shadow register for RCPM_IPPDEXPCR1.
> 
>  Example:
>  The RCPM node for T4240:
> @@ -43,6 +46,15 @@ The RCPM node for T4240:
>  		#fsl,rcpm-wakeup-cells = <2>;
>  	};
> 
> +The RCPM node for LS1021A:
> +	rcpm: rcpm@...2140 {
> +		compatible = "fsl,ls1021a-rcpm", "fsl,qoriq-rcpm-2.1+";
> +		reg = <0x0 0x1ee2140 0x0 0x8>;
> +		#fsl,rcpm-wakeup-cells = <2>;
> +		fsl,ippdexpcr1-alt-reg;
> +	};
> +
> +
>  * Freescale RCPM Wakeup Source Device Tree Bindings
>  -------------------------------------------
>  Required fsl,rcpm-wakeup property should be added to a device node if the
> device
> --
> 2.7.4