linux-kernel - Re: [PATCH v2 15/15] ARM: dts: dra7: Add high speed modes capability to MMC1/MMC2 dt node

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

Message-ID: <4f18dab9-aee3-1023-d301-f142c6e2d358@ti.com>
Date:   Tue, 13 Feb 2018 16:40:07 +0530
From:   Sekhar Nori <nsekhar@...com>
To:     Kishon Vijay Abraham I <kishon@...com>,
        Benoît Cousson <bcousson@...libre.com>,
        Tony Lindgren <tony@...mide.com>,
        Rob Herring <robh+dt@...nel.org>
CC:     Mark Rutland <mark.rutland@....com>,
        Russell King <linux@...linux.org.uk>,
        <linux-omap@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 15/15] ARM: dts: dra7: Add high speed modes capability
 to MMC1/MMC2 dt node

On Wednesday 07 February 2018 02:51 PM, Kishon Vijay Abraham I wrote:
> Hi,
> 
> On Wednesday 07 February 2018 02:41 PM, Sekhar Nori wrote:
>> Kishon,
>>
>> On Tuesday 06 February 2018 06:28 PM, Kishon Vijay Abraham I wrote:
>>> Add UHS/HS200/DDR speed mode capability to MMC1 and MMC2 dt nodes.
>>>
>>> Signed-off-by: Kishon Vijay Abraham I <kishon@...com>
>>
>> Along with this, dont we need to have
>>
>> 	/delete-property/ mmc-hs200-1_8v;
>>
>> for eMMC on Beagle x15 which does not support HS200?
>>
>> Or are you planning to depend on lack of pinctrl entries for HS200 to
>> take care of that?
> 
> right now it relies on lack of pinctrl entries but I think adding delete
> property is appropriate. Actually I missed porting the patch that adds
> /delete-property/.

Actually, thinking more, this should be probably be handled using
"no-1-8-v" property. Reading the comment above SDHCI_QUIRK2_NO_1_8_V, it
is specifically meant for the case when system (board) does not support
1.8V even when host (controller) does. Which is exactly the case with
Beagle x15.

Thanks,
Sekhar