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

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Message-ID: <71f61d0b-b09e-84e9-dd6e-77b89b09ba42@puri.sm>
Date:   Fri, 15 Jan 2021 10:57:02 +0100
From:   Martin Kepplinger <martin.kepplinger@...i.sm>
To:     Shawn Guo <shawnguo@...nel.org>
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 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.

                               martin