linux-kernel - Re: [PATCH v5 06/11] ARM: dts: bcm2711: Add unicam CSI nodes

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Message-ID: <f776477d-0e19-f31e-2984-3f0c750743d0@i2se.com>
Date:   Sun, 13 Feb 2022 14:51:59 +0100
From:   Stefan Wahren <stefan.wahren@...e.com>
To:     Jean-Michel Hautbois <jeanmichel.hautbois@...asonboard.com>
Cc:     dave.stevenson@...pberrypi.com, devicetree@...r.kernel.org,
        kernel-list@...pberrypi.com, laurent.pinchart@...asonboard.com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-media@...r.kernel.org, linux-rpi-kernel@...ts.infradead.org,
        lukasz@...y.st, mchehab@...nel.org, naush@...pberrypi.com,
        robh@...nel.org, tomi.valkeinen@...asonboard.com,
        bcm-kernel-feedback-list@...adcom.com
Subject: Re: [PATCH v5 06/11] ARM: dts: bcm2711: Add unicam CSI nodes

Am 13.02.22 um 11:35 schrieb Stefan Wahren:
> Hi Jean-Michel,
>
> Am 08.02.22 um 16:50 schrieb Jean-Michel Hautbois:
>> +
>>  &firmware {
>>  	firmware_clocks: clocks {
>>  		compatible = "raspberrypi,firmware-clocks";
>> diff --git a/arch/arm/boot/dts/bcm2711.dtsi b/arch/arm/boot/dts/bcm2711.dtsi
>> index dff18fc9a906..21eb10122e50 100644
>> --- a/arch/arm/boot/dts/bcm2711.dtsi
>> +++ b/arch/arm/boot/dts/bcm2711.dtsi
>> @@ -293,6 +293,28 @@ hvs: hvs@...00000 {
>>  			interrupts = <GIC_SPI 97 IRQ_TYPE_LEVEL_HIGH>;
>>  		};
>>  
>> +		csi0: csi@...00000 {
>> +			compatible = "brcm,bcm2835-unicam";
>> +			reg = <0x7e800000 0x800>,
>> +			      <0x7e802000 0x4>;
>> +			reg-names = "unicam", "cmi";
>> +			interrupts = <GIC_SPI 102 IRQ_TYPE_LEVEL_HIGH>;
>> +			status = "disabled";
>> +			port {
>> +			};
>> +		};
>> +
>> +		csi1: csi@...01000 {
>> +			compatible = "brcm,bcm2835-unicam";
>> +			reg = <0x7e801000 0x800>,
>> +			      <0x7e802004 0x4>;
>> +			reg-names = "unicam", "cmi";
>> +			interrupts = <GIC_SPI 103 IRQ_TYPE_LEVEL_HIGH>;
>> +			status = "disabled";
>> +			port {
>> +			};
>> +		};
>> +
> i didn't noticed before that everything except of the interrupts are
> identical to the bcm283x boards [1]. So please define both nodes in
> bcm283x.dtsi (with bcm283x interrupts) and just override the interrupts
> for bcm2711 in this dtsi file.
>
> As a result the clocks and power domains from above can go to
> bcm2835-rpi.dtsi.

sorry, i forgot the downstream link:

[1] -
https://github.com/raspberrypi/linux/blob/rpi-5.15.y/arch/arm/boot/dts/bcm270x.dtsi#L88

>
>>  		pixelvalve3: pixelvalve@...12000 {
>>  			compatible = "brcm,bcm2711-pixelvalve3";
>>  			reg = <0x7ec12000 0x100>;