linux-kernel - [PATCH v2 2/4] arm64: dts: ti: k3-am62p: Add DMASS1 for CSI

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Message-ID: <20240220-am62p_csi-v2-2-3e71d9945571@ti.com>
Date: Tue, 20 Feb 2024 11:48:03 +0530
From: Jai Luthra <j-luthra@...com>
To: Nishanth Menon <nm@...com>, Vignesh Raghavendra <vigneshr@...com>,
        Tero
 Kristo <kristo@...nel.org>, Rob Herring <robh+dt@...nel.org>,
        Krzysztof
 Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley
	<conor+dt@...nel.org>, Andrew Davis <afd@...com>,
        Bryan Brattlof <bb@...com>, Dhruva Gole <d-gole@...com>
CC: <linux-arm-kernel@...ts.infradead.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, Vaishnav Achath <vaishnav.a@...com>,
        Devarsh
 Thakkar <devarsht@...com>, Aradhya Bhatia <a-bhatia1@...com>,
        Jai Luthra
	<j-luthra@...com>
Subject: [PATCH v2 2/4] arm64: dts: ti: k3-am62p: Add DMASS1 for CSI

On AM62P, CSI-RX uses a dedicated BCDMA instance (DMASS1) for
transferring captured camera frames to DDR, so enable it.

Reviewed-by: Vaishnav Achath <vaishnav.a@...com>
Signed-off-by: Jai Luthra <j-luthra@...com>
---
 arch/arm64/boot/dts/ti/k3-am62p-main.dtsi | 37 +++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-am62p-main.dtsi b/arch/arm64/boot/dts/ti/k3-am62p-main.dtsi
index e43530beb79f..fb328774879c 100644
--- a/arch/arm64/boot/dts/ti/k3-am62p-main.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am62p-main.dtsi
@@ -158,6 +158,43 @@ main_pktdma: dma-controller@...c0000 {
 		};
 	};
 
+	dmss_csi: bus@...00000 {
+		compatible = "simple-bus";
+		ranges = <0x00 0x4e000000 0x00 0x4e000000 0x00 0x408000>;
+		#address-cells = <2>;
+		#size-cells = <2>;
+		dma-ranges;
+		ti,sci-dev-id = <198>;
+
+		inta_main_dmss_csi: interrupt-controller@...00000 {
+			compatible = "ti,sci-inta";
+			reg = <0x00 0x4e400000 0x00 0x8000>;
+			#interrupt-cells = <0>;
+			interrupt-controller;
+			interrupt-parent = <&gic500>;
+			msi-controller;
+			power-domains = <&k3_pds 182 TI_SCI_PD_EXCLUSIVE>;
+			ti,sci = <&dmsc>;
+			ti,sci-dev-id = <200>;
+			ti,interrupt-ranges = <0 237 8>;
+			ti,unmapped-event-sources = <&main_bcdma_csi>;
+		};
+
+		main_bcdma_csi: dma-controller@...30000 {
+			compatible = "ti,am62a-dmss-bcdma-csirx";
+			reg = <0x00 0x4e230000 0x00 0x100>,
+			      <0x00 0x4e180000 0x00 0x8000>,
+			      <0x00 0x4e100000 0x00 0x10000>;
+			reg-names = "gcfg", "rchanrt", "ringrt";
+			#dma-cells = <3>;
+			msi-parent = <&inta_main_dmss_csi>;
+			power-domains = <&k3_pds 182 TI_SCI_PD_EXCLUSIVE>;
+			ti,sci = <&dmsc>;
+			ti,sci-dev-id = <199>;
+			ti,sci-rm-range-rchan = <0x21>;
+		};
+	};
+
 	dmsc: system-controller@...43000 {
 		compatible = "ti,k2g-sci";
 		ti,host-id = <12>;

-- 
2.43.0