linux-kernel - Re: [PATCH v4 4/5] arm64: dts: imx8mq: Add interconnect for lcdif

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Message-ID: <20210115100136.GN28365@dragon>
Date:   Fri, 15 Jan 2021 18:01:37 +0800
From:   Shawn Guo <shawnguo@...nel.org>
To:     Martin Kepplinger <martin.kepplinger@...i.sm>
Cc:     robh@...nel.org, festevam@...il.com, catalin.marinas@....com,
        will@...nel.org, georgi.djakov@...aro.org, cdleonard@...il.com,
        gregkh@...uxfoundation.org, kernel@...gutronix.de,
        linux-imx@....com, kernel@...i.sm, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-pm@...r.kernel.org
Subject: Re: [PATCH v4 4/5] arm64: dts: imx8mq: Add interconnect for lcdif

On Fri, Jan 15, 2021 at 10:57:02AM +0100, Martin Kepplinger wrote:
> 
> 
> On 15.01.21 10:47, Shawn Guo wrote:
> > On Thu, Jan 07, 2021 at 01:17:53PM +0100, Martin Kepplinger wrote:
> > > Add interconnect ports for lcdif to set bus capabilities.
> > > 
> > > Signed-off-by: Martin Kepplinger <martin.kepplinger@...i.sm>
> > > ---
> > >   arch/arm64/boot/dts/freescale/imx8mq.dtsi | 3 +++
> > >   1 file changed, 3 insertions(+)
> > > 
> > > diff --git a/arch/arm64/boot/dts/freescale/imx8mq.dtsi b/arch/arm64/boot/dts/freescale/imx8mq.dtsi
> > > index 89e7de2e7f7a..9300be8c9b53 100644
> > > --- a/arch/arm64/boot/dts/freescale/imx8mq.dtsi
> > > +++ b/arch/arm64/boot/dts/freescale/imx8mq.dtsi
> > > @@ -11,6 +11,7 @@
> > >   #include "dt-bindings/input/input.h"
> > >   #include <dt-bindings/interrupt-controller/arm-gic.h>
> > >   #include <dt-bindings/thermal/thermal.h>
> > > +#include <dt-bindings/interconnect/imx8mq.h>
> > >   #include "imx8mq-pinfunc.h"
> > >   / {
> > > @@ -522,6 +523,8 @@
> > >   						  <&clk IMX8MQ_VIDEO_PLL1>,
> > >   						  <&clk IMX8MQ_VIDEO_PLL1_OUT>;
> > >   				assigned-clock-rates = <0>, <0>, <0>, <594000000>;
> > > +				interconnects = <&noc IMX8MQ_ICM_LCDIF &noc IMX8MQ_ICS_DRAM>;
> > > +				interconnect-names = "dram";
> > 
> > Hmm, two interconnect phandles but only one name?
> > 
> 
> Well it's one interconnect path that would more accurately be named
> "lcdif-dram" if that's what you mean. I removed "lcdif-" because it's the
> lcdif node, but maybe we should name it lcdif-dram after all. at least
> that's how others describe it.

Ha, sorry, I misunderstood the interconnects property.

Shawn