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From:   Adam Ford <aford173@gmail.com>
To:     linux-arm-kernel@lists.infradead.org
Cc:     laurent.pinchart@ideasonboard.com, Adam Ford <aford173@gmail.com>,
        Rob Herring <robh+dt@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        Shawn Guo <shawnguo@kernel.org>,
        Sascha Hauer <s.hauer@pengutronix.de>,
        Pengutronix Kernel Team <kernel@pengutronix.de>,
        Fabio Estevam <festevam@gmail.com>,
        NXP Linux Team <linux-imx@nxp.com>,
        Catalin Marinas <catalin.marinas@arm.com>,
        Will Deacon <will@kernel.org>, devicetree@vger.kernel.org,
        linux-kernel@vger.kernel.org
Subject: [PATCH 1/2] arm64: dts: imx8mn: Enable CSI and ISI Nodes
Date:   Sun, 23 Apr 2023 16:26:55 -0500
Message-Id: <20230423212656.1381002-1-aford173@gmail.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

The CSI in the imx8mn is the same as what is used in the imx8mm,
but it's routed to the ISI on the Nano. Add both the ISI and CSI
nodes, and pointing them to each other. Since the CSI capture is
dependent on an attached camera, mark both ISI and CSI as
disabled by default.

Signed-off-by: Adam Ford <aford173@gmail.com>

diff --git a/arch/arm64/boot/dts/freescale/imx8mn.dtsi b/arch/arm64/boot/dts/freescale/imx8mn.dtsi
index 8be8f090e8b8..102550b41f22 100644
--- a/arch/arm64/boot/dts/freescale/imx8mn.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mn.dtsi
@@ -1104,6 +1104,24 @@ dsim_from_lcdif: endpoint {
 				};
 			};
 
+			isi: isi@32e20000 {
+				compatible = "fsl,imx8mn-isi";
+				reg = <0x32e20000 0x100>;
+				interrupts = <GIC_SPI 16 IRQ_TYPE_LEVEL_HIGH>;
+				clocks = <&clk IMX8MN_CLK_DISP_AXI_ROOT>,
+					 <&clk IMX8MN_CLK_DISP_APB_ROOT>;
+				clock-names = "axi", "apb";
+				fsl,blk-ctrl = <&disp_blk_ctrl>;
+				power-domains = <&disp_blk_ctrl IMX8MN_DISPBLK_PD_ISI>;
+				status = "disabled";
+
+				port {
+					isi_in: endpoint {
+						remote-endpoint = <&mipi_csi_out>;
+					};
+				};
+			};
+
 			disp_blk_ctrl: blk-ctrl@32e28000 {
 				compatible = "fsl,imx8mn-disp-blk-ctrl", "syscon";
 				reg = <0x32e28000 0x100>;
@@ -1147,6 +1165,42 @@ disp_blk_ctrl: blk-ctrl@32e28000 {
 				#power-domain-cells = <1>;
 			};
 
+			mipi_csi: mipi-csi@32e30000 {
+				compatible = "fsl,imx8mm-mipi-csi2";
+				reg = <0x32e30000 0x1000>;
+				interrupts = <GIC_SPI 17 IRQ_TYPE_LEVEL_HIGH>;
+				assigned-clocks = <&clk IMX8MN_CLK_CAMERA_PIXEL>,
+						  <&clk IMX8MN_CLK_CSI1_PHY_REF>;
+				assigned-clock-parents = <&clk IMX8MN_SYS_PLL2_1000M>,
+							  <&clk IMX8MN_SYS_PLL2_1000M>;
+				assigned-clock-rates = <333000000>;
+				clock-frequency = <333000000>;
+				clocks = <&clk IMX8MN_CLK_DISP_APB_ROOT>,
+					 <&clk IMX8MN_CLK_CAMERA_PIXEL>,
+					 <&clk IMX8MN_CLK_CSI1_PHY_REF>,
+					 <&clk IMX8MN_CLK_DISP_AXI_ROOT>;
+				clock-names = "pclk", "wrap", "phy", "axi";
+				power-domains = <&disp_blk_ctrl IMX8MN_DISPBLK_PD_MIPI_CSI>;
+				status = "disabled";
+
+				ports {
+					#address-cells = <1>;
+					#size-cells = <0>;
+
+					port@0 {
+						reg = <0>;
+					};
+
+					port@1 {
+						reg = <1>;
+
+						mipi_csi_out: endpoint {
+							remote-endpoint = <&isi_in>;
+						};
+					};
+				};
+			};
+
 			usbotg1: usb@32e40000 {
 				compatible = "fsl,imx8mn-usb", "fsl,imx7d-usb", "fsl,imx27-usb";
 				reg = <0x32e40000 0x200>;
-- 
2.39.2