Hi Simon,
On Mon, Jun 17, 2019 at 10:37 AM Simon Horman
<horms+renesas@xxxxxxxxxxxx> wrote:
> From: Yoshihiro Kaneko <ykaneko0929@xxxxxxxxx>
>
> It is necessary to reset the LVDS Interface according to display on/off.
This is not the LVDS interface.
The LVDS interface has its own device node.
> Therefore, this patch adds CPG reset properties in DU device node
> for the R8A77995 SoC.
>
> This patch was inspired by a patch in the BSP by Takeshi Kihara
> <takeshi.kihara.df@xxxxxxxxxxx>.
>
> According to Laurent Pinchart, R-Car Gen3 reset is handled at the group
> level so specifying one reset entry per group is sufficient. For
> this reason <&cpg 724> is not listed as a reset for "du.1" as
> was the case in an earlier revision of this patch.
>
> Signed-off-by: Yoshihiro Kaneko <ykaneko0929@xxxxxxxxx>
> Signed-off-by: Simon Horman <horms+renesas@xxxxxxxxxxxx>
> ---
> v2 [Simon Horman]
> - only add one reset entry per group
>
> v1 [Yoshihiro Kaneko]
> --- a/arch/arm64/boot/dts/renesas/r8a77995.dtsi
> +++ b/arch/arm64/boot/dts/renesas/r8a77995.dtsi
> @@ -1001,6 +1001,8 @@
> clocks = <&cpg CPG_MOD 724>,
> <&cpg CPG_MOD 723>;
> clock-names = "du.0", "du.1";
> + resets = <&cpg 724>;
> + reset-names = "du.0";
> vsps = <&vspd0 0 &vspd1 0>;
> status = "disabled";
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
