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

From: AngeloGioacchino Del Regno
Date: Wed Apr 12 2023 - 07:29:14 EST


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@xxxxxxxxxxxxx>
---
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@10200670 {
clock-names = "clk13m";
};

+ iommu: iommu@10205000 {
+ 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@10209000 {
compatible = "mediatek,mt6795-apmixedsys", "syscon";
reg = <0 0x10209000 0 0x1000>;
@@ -648,16 +660,64 @@ mmsys: syscon@14000000 {
mediatek,gce-client-reg = <&gce SUBSYS_1400XXXX 0 0x1000>;
};

+ larb0: larb@14021000 {
+ 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@14022000 {
+ 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@15001000 {
+ 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@16000000 {
compatible = "mediatek,mt6795-vdecsys";
reg = <0 0x16000000 0 0x1000>;
#clock-cells = <1>;
};

+ larb1: larb@16010000 {
+ 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@18000000 {
compatible = "mediatek,mt6795-vencsys";
reg = <0 0x18000000 0 0x1000>;
#clock-cells = <1>;
};
+
+ larb3: larb@18001000 {
+ 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