linux-kernel - Re: [PATCH 18/27] arm64: dts: mediatek: mt6795: Add support for IOMMU and LARBs

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Message-ID: <a24acb75-4503-d987-0ebb-cdbba564768f@gmail.com>
Date:   Mon, 29 May 2023 15:56:33 +0200
From:   Matthias Brugger <matthias.bgg@...il.com>
To:     AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
Cc:     p.zabel@...gutronix.de, airlied@...il.com, daniel@...ll.ch,
        robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
        jassisinghbrar@...il.com, chunfeng.yun@...iatek.com,
        vkoul@...nel.org, kishon@...nel.org, thierry.reding@...il.com,
        u.kleine-koenig@...gutronix.de, chunkuang.hu@...nel.org,
        ck.hu@...iatek.com, jitao.shi@...iatek.com,
        xinlei.lee@...iatek.com, houlong.wei@...iatek.com,
        dri-devel@...ts.freedesktop.org,
        linux-mediatek@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-phy@...ts.infradead.org, linux-pwm@...r.kernel.org,
        kernel@...labora.com, phone-devel@...r.kernel.org,
        ~postmarketos/upstreaming@...ts.sr.ht
Subject: Re: [PATCH 18/27] arm64: dts: mediatek: mt6795: Add support for IOMMU
 and LARBs



On 12/04/2023 13:27, AngeloGioacchino Del Regno wrote:
> Add nodes for the multimedia IOMMU and its LARBs: this includes all but
> the MJC LARB, which cannot currently be used and will be added later.
> 
> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>

Applied, thanks

> ---
>   arch/arm64/boot/dts/mediatek/mt6795.dtsi | 60 ++++++++++++++++++++++++
>   1 file changed, 60 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/mediatek/mt6795.dtsi b/arch/arm64/boot/dts/mediatek/mt6795.dtsi
> index a8b2c4517e79..9cfa02085f61 100644
> --- a/arch/arm64/boot/dts/mediatek/mt6795.dtsi
> +++ b/arch/arm64/boot/dts/mediatek/mt6795.dtsi
> @@ -8,6 +8,7 @@
>   #include <dt-bindings/interrupt-controller/arm-gic.h>
>   #include <dt-bindings/clock/mediatek,mt6795-clk.h>
>   #include <dt-bindings/gce/mediatek,mt6795-gce.h>
> +#include <dt-bindings/memory/mt6795-larb-port.h>
>   #include <dt-bindings/pinctrl/mt6795-pinfunc.h>
>   #include <dt-bindings/power/mt6795-power.h>
>   #include <dt-bindings/reset/mediatek,mt6795-resets.h>
> @@ -390,6 +391,17 @@ systimer: timer@...00670 {
>   			clock-names = "clk13m";
>   		};
>   
> +		iommu: iommu@...05000 {
> +			compatible = "mediatek,mt6795-m4u";
> +			reg = <0 0x10205000 0 0x1000>;
> +			clocks = <&infracfg CLK_INFRA_M4U>;
> +			clock-names = "bclk";
> +			interrupts = <GIC_SPI 146 IRQ_TYPE_LEVEL_LOW>;
> +			mediatek,larbs = <&larb0 &larb1 &larb2 &larb3>;
> +			power-domains = <&spm MT6795_POWER_DOMAIN_MM>;
> +			#iommu-cells = <1>;
> +		};
> +
>   		apmixedsys: syscon@...09000 {
>   			compatible = "mediatek,mt6795-apmixedsys", "syscon";
>   			reg = <0 0x10209000 0 0x1000>;
> @@ -648,16 +660,64 @@ mmsys: syscon@...00000 {
>   			mediatek,gce-client-reg = <&gce SUBSYS_1400XXXX 0 0x1000>;
>   		};
>   
> +		larb0: larb@...21000 {
> +			compatible = "mediatek,mt6795-smi-larb";
> +			reg = <0 0x14021000 0 0x1000>;
> +			clocks = <&mmsys CLK_MM_SMI_COMMON>, <&mmsys CLK_MM_SMI_LARB0>;
> +			clock-names = "apb", "smi";
> +			mediatek,smi = <&smi_common>;
> +			mediatek,larb-id = <0>;
> +			power-domains = <&spm MT6795_POWER_DOMAIN_MM>;
> +		};
> +
> +		smi_common: smi@...22000 {
> +			compatible = "mediatek,mt6795-smi-common";
> +			reg = <0 0x14022000 0 0x1000>;
> +			power-domains = <&spm MT6795_POWER_DOMAIN_MM>;
> +			clocks = <&infracfg CLK_INFRA_SMI>, <&mmsys CLK_MM_SMI_COMMON>;
> +			clock-names = "apb", "smi";
> +		};
> +
> +		larb2: larb@...01000 {
> +			compatible = "mediatek,mt6795-smi-larb";
> +			reg = <0 0x15001000 0 0x1000>;
> +			clocks = <&mmsys CLK_MM_SMI_COMMON>, <&infracfg CLK_INFRA_SMI>;
> +			clock-names = "apb", "smi";
> +			mediatek,smi = <&smi_common>;
> +			mediatek,larb-id = <2>;
> +			power-domains = <&spm MT6795_POWER_DOMAIN_ISP>;
> +		};
> +
>   		vdecsys: clock-controller@...00000 {
>   			compatible = "mediatek,mt6795-vdecsys";
>   			reg = <0 0x16000000 0 0x1000>;
>   			#clock-cells = <1>;
>   		};
>   
> +		larb1: larb@...10000 {
> +			compatible = "mediatek,mt6795-smi-larb";
> +			reg = <0 0x16010000 0 0x1000>;
> +			mediatek,smi = <&smi_common>;
> +			mediatek,larb-id = <1>;
> +			clocks = <&vdecsys CLK_VDEC_CKEN>, <&vdecsys CLK_VDEC_LARB_CKEN>;
> +			clock-names = "apb", "smi";
> +			power-domains = <&spm MT6795_POWER_DOMAIN_VDEC>;
> +		};
> +
>   		vencsys: clock-controller@...00000 {
>   			compatible = "mediatek,mt6795-vencsys";
>   			reg = <0 0x18000000 0 0x1000>;
>   			#clock-cells = <1>;
>   		};
> +
> +		larb3: larb@...01000 {
> +			compatible = "mediatek,mt6795-smi-larb";
> +			reg = <0 0x18001000 0 0x1000>;
> +			clocks = <&vencsys CLK_VENC_VENC>, <&vencsys CLK_VENC_LARB>;
> +			clock-names = "apb", "smi";
> +			mediatek,smi = <&smi_common>;
> +			mediatek,larb-id = <3>;
> +			power-domains = <&spm MT6795_POWER_DOMAIN_VENC>;
> +		};
>   	};
>   };