linux-kernel - [PATCH v1 12/18] arm64: dts: mediatek: mt6795: Add support for IOMMU and LARBs

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Message-Id: <20230324175456.219954-13-angelogioacchino.delregno@collabora.com>
Date:   Fri, 24 Mar 2023 18:54:50 +0100
From:   AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
To:     matthias.bgg@...il.com
Cc:     qii.wang@...iatek.com, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, jassisinghbrar@...il.com,
        houlong.wei@...iatek.com, linux-i2c@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, kernel@...labora.com,
        phone-devel@...r.kernel.org, ~postmarketos/upstreaming@...ts.sr.ht,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
Subject: [PATCH v1 12/18] arm64: dts: mediatek: mt6795: Add support for IOMMU and LARBs

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>
---
 arch/arm64/boot/dts/mediatek/mt6795.dtsi | 59 ++++++++++++++++++++++++
 1 file changed, 59 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt6795.dtsi b/arch/arm64/boot/dts/mediatek/mt6795.dtsi
index a8b2c4517e79..a580ddb51a0e 100644
--- a/arch/arm64/boot/dts/mediatek/mt6795.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt6795.dtsi
@@ -390,6 +390,17 @@ 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 +659,64 @@ 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>;
+		};
 	};
 };
-- 
2.40.0