linux-kernel - Re: [PATCH 2/3] ARM: dts: sun7i: Add RGB666 pins definition

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: <e7f68882-c333-12ac-c122-20b0d7b65666@micronovasrl.com>
Date:   Thu, 12 Apr 2018 00:22:09 +0200
From:   Giulio Benetti <giulio.benetti@...ronovasrl.com>
To:     Paul Kocialkowski <contact@...lk.fr>, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        dri-devel@...ts.freedesktop.org, linux-sunxi@...glegroups.com
Cc:     Mark Rutland <mark.rutland@....com>,
        Maxime Ripard <maxime.ripard@...tlin.com>,
        Russell King <linux@...linux.org.uk>,
        David Airlie <airlied@...ux.ie>, Chen-Yu Tsai <wens@...e.org>,
        Rob Herring <robh+dt@...nel.org>,
        Thierry Reding <thierry.reding@...il.com>
Subject: Re: [PATCH 2/3] ARM: dts: sun7i: Add RGB666 pins definition

Hi,

Il 10/04/2018 23:31, Paul Kocialkowski ha scritto:
> This adds the pins definition for RGB666 LCD panels on the A20. It was
> imported from the A33 definition, that concernes the same set of pins.
> 
> Signed-off-by: Paul Kocialkowski <contact@...lk.fr>
> ---
>   arch/arm/boot/dts/sun7i-a20.dtsi | 8 ++++++++
>   1 file changed, 8 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/sun7i-a20.dtsi b/arch/arm/boot/dts/sun7i-a20.dtsi
> index e529e4ff2174..f46af8675cfa 100644
> --- a/arch/arm/boot/dts/sun7i-a20.dtsi
> +++ b/arch/arm/boot/dts/sun7i-a20.dtsi
> @@ -781,6 +781,14 @@
>   				function = "ir1";
>   			};
>   
> +			lcd_rgb666_pins: lcd_rgb666@0 {

I point you to this Thread and back:
https://lists.freedesktop.org/archives/dri-devel/2018-March/170688.html

I did the same for rgb888, so good part is discussed.

IMHO I would:
- call lcd0_rgb666_pins, since this is for LCD0 interface
- same as above, call lcd0-rgb666, take care about using "-" instad of 
"_" that can cause DTC warnings.
- remove @0 since only this set can achieve LCD0 RGB666, and I
   don't think there will be other combinations.

Kind regards

-- 
Giulio Benetti
CTO

MICRONOVA SRL
Sede: Via A. Niedda 3 - 35010 Vigonza (PD)
Tel. 049/8931563 - Fax 049/8931346
Cod.Fiscale - P.IVA 02663420285
Capitale Sociale € 26.000 i.v.
Iscritta al Reg. Imprese di Padova N. 02663420285
Numero R.E.A. 258642


> +				pins = "PD2", "PD3", "PD4", "PD5", "PD6", "PD7",
> +				       "PD10", "PD11", "PD12", "PD13", "PD14", "PD15",
> +				       "PD18", "PD19", "PD20", "PD21", "PD22", "PD23",
> +				       "PD24", "PD25", "PD26", "PD27";
> +				function = "lcd0";
> +			};
> +
>   			mmc0_pins_a: mmc0@0 {
>   				pins = "PF0", "PF1", "PF2",
>   				       "PF3", "PF4", "PF5";
>