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From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
To: Simon Horman <horms@verge.net.au>
Cc: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>,
	Yoshihiro Kaneko <ykaneko0929@gmail.com>,
	Magnus Damm <magnus.damm@gmail.com>,
	linux-renesas-soc@vger.kernel.org,
	Geert Uytterhoeven <geert@linux-m68k.org>,
	linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH/RFT] arm64: dts: renesas: r8a77990: Fix register range of display node
Date: Tue, 11 Jun 2019 17:02:52 +0300	[thread overview]
Message-ID: <20190611140252.GL5016@pendragon.ideasonboard.com> (raw)
In-Reply-To: <20190611123022.oo4arh76w72vlkg5@verge.net.au>

Hello,

On Tue, Jun 11, 2019 at 02:30:27PM +0200, Simon Horman wrote:
> + Laurent
> 
> On Sun, Jun 09, 2019 at 09:43:18PM +0900, Yoshihiro Kaneko wrote:
> > From: Takeshi Kihara <takeshi.kihara.df@renesas.com>
> > 
> > Since the R8A77990 SoC uses DU{0,1}, the range from the base address to
> > the 0x4000 address is used.
> > This patch fixed it.
> > 
> > Fixes: 13ee2bfc5444 ("arm64: dts: renesas: r8a77990: Add display output support")
> > Signed-off-by: Takeshi Kihara <takeshi.kihara.df@renesas.com>
> > Signed-off-by: Yoshihiro Kaneko <ykaneko0929@gmail.com>
> 
> Thanks,
> 
> This looks fine to me but I will wait to see if there are other reviews
> before applying.
> 
> Reviewed-by: Simon Horman <horms+renesas@verge.net.au>

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

> Is a similar fix also appropriate for D3 (r8a77995)

Yes it is.

> And a variant that reduces the register size to 0x5000
> for M3-W (r8a77965).

M3-W has registers at 0xfeb60000. You could reduce the size from
0x80000 to 0x70000 but I don't think it's worth it.

> > ---
> > 
> > This patch is based on the devel branch of Simon Horman's renesas tree.
> > 
> >  arch/arm64/boot/dts/renesas/r8a77990.dtsi | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > diff --git a/arch/arm64/boot/dts/renesas/r8a77990.dtsi b/arch/arm64/boot/dts/renesas/r8a77990.dtsi
> > index 547e970..9b15da1 100644
> > --- a/arch/arm64/boot/dts/renesas/r8a77990.dtsi
> > +++ b/arch/arm64/boot/dts/renesas/r8a77990.dtsi
> > @@ -1760,7 +1760,7 @@
> >  
> >  		du: display@feb00000 {
> >  			compatible = "renesas,du-r8a77990";
> > -			reg = <0 0xfeb00000 0 0x80000>;
> > +			reg = <0 0xfeb00000 0 0x40000>;
> >  			interrupts = <GIC_SPI 256 IRQ_TYPE_LEVEL_HIGH>,
> >  				     <GIC_SPI 268 IRQ_TYPE_LEVEL_HIGH>;
> >  			clocks = <&cpg CPG_MOD 724>,

-- 
Regards,

Laurent Pinchart

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  reply	other threads:[~2019-06-11 14:03 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-06-09 12:43 [PATCH/RFT] arm64: dts: renesas: r8a77990: Fix register range of display node Yoshihiro Kaneko
2019-06-11 12:30 ` Simon Horman
2019-06-11 14:02   ` Laurent Pinchart [this message]
2019-06-12 12:11     ` Simon Horman
2019-06-16 11:27       ` Yoshihiro Kaneko

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