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From:   Chanh Nguyen <chanh@os.amperecomputing.com>
To:     OpenBMC Maillist <openbmc@lists.ozlabs.org>,
        Rob Herring <robh+dt@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        Conor Dooley <conor+dt@kernel.org>,
        Joel Stanley <joel@jms.id.au>,
        Andrew Jeffery <andrew@aj.id.au>, devicetree@vger.kernel.org,
        linux-arm-kernel@lists.infradead.org,
        linux-aspeed@lists.ozlabs.org, linux-kernel@vger.kernel.org
Cc:     Chanh Nguyen <chanh@os.amperecomputing.com>
Subject: [PATCH 7/7] ARM: dts: aspeed: mtmitchell: Add I2C NVMe alias port
Date:   Thu,  5 Oct 2023 10:55:25 +0700
Message-Id: <20231005035525.19036-8-chanh@os.amperecomputing.com>
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Adds the I2C alias ports to each NVMe drive via the
backplane card.

Besides that, it also adds the eeprom and temperature sensor
on the backplane card.

Signed-off-by: Chanh Nguyen <chanh@os.amperecomputing.com>
---
 .../aspeed/aspeed-bmc-ampere-mtmitchell.dts   | 267 ++++++++++++++++++
 1 file changed, 267 insertions(+)

diff --git a/arch/arm/boot/dts/aspeed/aspeed-bmc-ampere-mtmitchell.dts b/arch/arm/boot/dts/aspeed/aspeed-bmc-ampere-mtmitchell.dts
index eb8d5e367276..1f70e3e4e83b 100644
--- a/arch/arm/boot/dts/aspeed/aspeed-bmc-ampere-mtmitchell.dts
+++ b/arch/arm/boot/dts/aspeed/aspeed-bmc-ampere-mtmitchell.dts
@@ -14,6 +14,42 @@
 	aliases {
 		serial7 = &uart8;
 		serial8 = &uart9;
+
+		/*
+		 *  I2C NVMe alias port
+		 */
+		i2c100 = &backplane_0;
+		i2c48 = &nvmeslot_0;
+		i2c49 = &nvmeslot_1;
+		i2c50 = &nvmeslot_2;
+		i2c51 = &nvmeslot_3;
+		i2c52 = &nvmeslot_4;
+		i2c53 = &nvmeslot_5;
+		i2c54 = &nvmeslot_6;
+		i2c55 = &nvmeslot_7;
+
+		i2c101 = &backplane_1;
+		i2c56 = &nvmeslot_8;
+		i2c57 = &nvmeslot_9;
+		i2c58 = &nvmeslot_10;
+		i2c59 = &nvmeslot_11;
+		i2c60 = &nvmeslot_12;
+		i2c61 = &nvmeslot_13;
+		i2c62 = &nvmeslot_14;
+		i2c63 = &nvmeslot_15;
+
+		i2c102 = &backplane_2;
+		i2c64 = &nvmeslot_16;
+		i2c65 = &nvmeslot_17;
+		i2c66 = &nvmeslot_18;
+		i2c67 = &nvmeslot_19;
+		i2c68 = &nvmeslot_20;
+		i2c69 = &nvmeslot_21;
+		i2c70 = &nvmeslot_22;
+		i2c71 = &nvmeslot_23;
+
+		i2c80 = &nvme_m2_0;
+		i2c81 = &nvme_m2_1;
 	};
 
 	chosen {
@@ -534,6 +570,237 @@
 
 &i2c9 {
 	status = "okay";
+	i2c-mux@70 {
+		compatible = "nxp,pca9548";
+		#address-cells = <1>;
+		#size-cells = <0>;
+		reg = <0x70>;
+		i2c-mux-idle-disconnect;
+
+		backplane_1: i2c@0 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <0x0>;
+
+			eeprom@50 {
+				compatible = "atmel,24c64";
+				reg = <0x50>;
+				pagesize = <32>;
+			};
+
+			i2c-mux@71 {
+				compatible = "nxp,pca9548";
+				#address-cells = <1>;
+				#size-cells = <0>;
+				reg = <0x71>;
+				i2c-mux-idle-disconnect;
+
+				nvmeslot_8: i2c@0 {
+					#address-cells = <1>;
+					#size-cells = <0>;
+					reg = <0x0>;
+				};
+				nvmeslot_9: i2c@1 {
+					#address-cells = <1>;
+					#size-cells = <0>;
+					reg = <0x1>;
+				};
+				nvmeslot_10: i2c@2 {
+					#address-cells = <1>;
+					#size-cells = <0>;
+					reg = <0x2>;
+				};
+				nvmeslot_11: i2c@3 {
+					#address-cells = <1>;
+					#size-cells = <0>;
+					reg = <0x3>;
+				};
+				nvmeslot_12: i2c@4 {
+					#address-cells = <1>;
+					#size-cells = <0>;
+					reg = <0x4>;
+				};
+				nvmeslot_13: i2c@5 {
+					#address-cells = <1>;
+					#size-cells = <0>;
+					reg = <0x5>;
+				};
+				nvmeslot_14: i2c@6 {
+					#address-cells = <1>;
+					#size-cells = <0>;
+					reg = <0x6>;
+				};
+				nvmeslot_15: i2c@7 {
+					#address-cells = <1>;
+					#size-cells = <0>;
+					reg = <0x7>;
+				};
+			};
+
+			tmp432@4c {
+				compatible = "ti,tmp75";
+				reg = <0x4c>;
+			};
+		};
+
+		backplane_2: i2c@2 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <0x2>;
+
+			eeprom@50 {
+				compatible = "atmel,24c64";
+				reg = <0x50>;
+				pagesize = <32>;
+			};
+
+			i2c-mux@71 {
+				compatible = "nxp,pca9548";
+				#address-cells = <1>;
+				#size-cells = <0>;
+				reg = <0x71>;
+				i2c-mux-idle-disconnect;
+
+				nvmeslot_16: i2c@0 {
+					#address-cells = <1>;
+					#size-cells = <0>;
+					reg = <0x0>;
+				};
+				nvmeslot_17: i2c@1 {
+					#address-cells = <1>;
+					#size-cells = <0>;
+					reg = <0x1>;
+				};
+				nvmeslot_18: i2c@2 {
+					#address-cells = <1>;
+					#size-cells = <0>;
+					reg = <0x2>;
+				};
+				nvmeslot_19: i2c@3 {
+					#address-cells = <1>;
+					#size-cells = <0>;
+					reg = <0x3>;
+				};
+				nvmeslot_20: i2c@4 {
+					#address-cells = <1>;
+					#size-cells = <0>;
+					reg = <0x4>;
+				};
+				nvmeslot_21: i2c@5 {
+					#address-cells = <1>;
+					#size-cells = <0>;
+					reg = <0x5>;
+				};
+				nvmeslot_22: i2c@6 {
+					#address-cells = <1>;
+					#size-cells = <0>;
+					reg = <0x6>;
+				};
+				nvmeslot_23: i2c@7 {
+					#address-cells = <1>;
+					#size-cells = <0>;
+					reg = <0x7>;
+				};
+			};
+
+			tmp432@4c {
+				compatible = "ti,tmp75";
+				reg = <0x4c>;
+			};
+		};
+
+		backplane_0: i2c@4 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <0x4>;
+
+			eeprom@50 {
+				compatible = "atmel,24c64";
+				reg = <0x50>;
+				pagesize = <32>;
+			};
+
+			i2c-mux@71 {
+				compatible = "nxp,pca9548";
+				#address-cells = <1>;
+				#size-cells = <0>;
+				reg = <0x71>;
+				i2c-mux-idle-disconnect;
+
+				nvmeslot_0: i2c@0 {
+					#address-cells = <1>;
+					#size-cells = <0>;
+					reg = <0x0>;
+				};
+				nvmeslot_1: i2c@1 {
+					#address-cells = <1>;
+					#size-cells = <0>;
+					reg = <0x1>;
+				};
+				nvmeslot_2: i2c@2 {
+					#address-cells = <1>;
+					#size-cells = <0>;
+					reg = <0x2>;
+				};
+				nvmeslot_3: i2c@3 {
+					#address-cells = <1>;
+					#size-cells = <0>;
+					reg = <0x3>;
+				};
+				nvmeslot_4: i2c@4 {
+					#address-cells = <1>;
+					#size-cells = <0>;
+					reg = <0x4>;
+				};
+				nvmeslot_5: i2c@5 {
+					#address-cells = <1>;
+					#size-cells = <0>;
+					reg = <0x5>;
+				};
+				nvmeslot_6: i2c@6 {
+					#address-cells = <1>;
+					#size-cells = <0>;
+					reg = <0x6>;
+				};
+				nvmeslot_7: i2c@7 {
+					#address-cells = <1>;
+					#size-cells = <0>;
+					reg = <0x7>;
+				};
+			};
+
+			tmp432@4c {
+				compatible = "ti,tmp75";
+				reg = <0x4c>;
+			};
+		};
+
+		i2c@7 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <0x7>;
+
+			i2c-mux@71 {
+				compatible = "nxp,pca9546";
+				#address-cells = <1>;
+				#size-cells = <0>;
+				reg = <0x71>;
+				i2c-mux-idle-disconnect;
+
+				nvme_m2_0: i2c@0 {
+					#address-cells = <1>;
+					#size-cells = <0>;
+					reg = <0x0>;
+				};
+
+				nvme_m2_1: i2c@1 {
+					#address-cells = <1>;
+					#size-cells = <0>;
+					reg = <0x1>;
+				};
+			};
+		};
+	};
 };
 
 &i2c11 {
-- 
2.17.1