linux-kernel - [PATCH v2 5/6] ARM: dts: aspeed: Add Facebook Elbert (AST2600) BMC

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Message-Id: <20210805222818.8391-6-rentao.bupt@gmail.com>
Date:   Thu,  5 Aug 2021 15:28:17 -0700
From:   rentao.bupt@...il.com
To:     Rob Herring <robh+dt@...nel.org>, Joel Stanley <joel@....id.au>,
        Andrew Jeffery <andrew@...id.au>, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-aspeed@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
        openbmc@...ts.ozlabs.org, taoren@...com
Cc:     Tao Ren <rentao.bupt@...il.com>
Subject: [PATCH v2 5/6] ARM: dts: aspeed: Add Facebook Elbert (AST2600) BMC

From: Tao Ren <rentao.bupt@...il.com>

Add initial version of device tree for Facebook Elbert (AST2600) BMC.

Elbert is Facebook's next generation switch platform with an AST2600 BMC
integrated for health monitoring purpose.

Signed-off-by: Tao Ren <rentao.bupt@...il.com>
---
 Changes in v2:
  - added more notes about the new platform in patch description.
  - "mac3" was disabled (because it was removed from Facebook AST2600
    NetBMC common dtsi). Will add "mac3" back when "fixed-link" is
    supported in the MAC driver.

 arch/arm/boot/dts/Makefile                    |   1 +
 .../boot/dts/aspeed-bmc-facebook-elbert.dts   | 185 ++++++++++++++++++
 2 files changed, 186 insertions(+)
 create mode 100644 arch/arm/boot/dts/aspeed-bmc-facebook-elbert.dts

diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index 74c760038f28..7cbb982a7c8b 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -1411,6 +1411,7 @@ dtb-$(CONFIG_ARCH_ASPEED) += \
 	aspeed-bmc-bytedance-g220a.dtb \
 	aspeed-bmc-facebook-cloudripper.dtb \
 	aspeed-bmc-facebook-cmm.dtb \
+	aspeed-bmc-facebook-elbert.dtb \
 	aspeed-bmc-facebook-galaxy100.dtb \
 	aspeed-bmc-facebook-minipack.dtb \
 	aspeed-bmc-facebook-tiogapass.dtb \
diff --git a/arch/arm/boot/dts/aspeed-bmc-facebook-elbert.dts b/arch/arm/boot/dts/aspeed-bmc-facebook-elbert.dts
new file mode 100644
index 000000000000..27b43fe099f1
--- /dev/null
+++ b/arch/arm/boot/dts/aspeed-bmc-facebook-elbert.dts
@@ -0,0 +1,185 @@
+// SPDX-License-Identifier: GPL-2.0+
+// Copyright (c) 2020 Facebook Inc.
+
+/dts-v1/;
+
+#include "ast2600-facebook-netbmc-common.dtsi"
+
+/ {
+	model = "Facebook Elbert BMC";
+	compatible = "facebook,elbert-bmc", "aspeed,ast2600";
+
+	aliases {
+		serial0 = &uart5;
+		serial1 = &uart1;
+		serial2 = &uart2;
+		serial3 = &uart3;
+
+		/*
+		 * 8 child channels of PCA9548 2-0075.
+		 */
+		i2c16 = &imux16;
+		i2c17 = &imux17;
+		i2c18 = &imux18;
+		i2c19 = &imux19;
+		i2c20 = &imux20;
+		i2c21 = &imux21;
+		i2c22 = &imux22;
+		i2c23 = &imux23;
+
+		/*
+		 * 8 child channels of PCA9548 5-0075.
+		 */
+		i2c24 = &imux24;
+		i2c25 = &imux25;
+		i2c26 = &imux26;
+		i2c27 = &imux27;
+		i2c28 = &imux28;
+		i2c29 = &imux29;
+		i2c30 = &imux30;
+		i2c31 = &imux31;
+	};
+
+	chosen {
+		stdout-path = &uart5;
+	};
+
+	spi_gpio: spi-gpio {
+		num-chipselects = <1>;
+		cs-gpios = <&gpio0 ASPEED_GPIO(X, 0) GPIO_ACTIVE_LOW>;
+	};
+};
+
+&lpc_ctrl {
+	status = "okay";
+};
+
+&kcs2 {
+	status = "okay";
+	aspeed,lpc-io-reg = <0xca8>;
+};
+
+&kcs3 {
+	status = "okay";
+	aspeed,lpc-io-reg = <0xca2>;
+};
+
+&i2c2 {
+	i2c-switch@75 {
+		compatible = "nxp,pca9548";
+		#address-cells = <1>;
+		#size-cells = <0>;
+		reg = <0x75>;
+		i2c-mux-idle-disconnect;
+
+		imux16: i2c@0 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <0>;
+		};
+
+		imux17: i2c@1 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <1>;
+		};
+
+		imux18: i2c@2 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <2>;
+		};
+
+		imux19: i2c@3 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <3>;
+		};
+
+		imux20: i2c@4 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <4>;
+		};
+
+		imux21: i2c@5 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <5>;
+		};
+
+		imux22: i2c@6 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <6>;
+		};
+
+		imux23: i2c@7 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <7>;
+		};
+	};
+};
+
+&i2c5 {
+	i2c-switch@75 {
+		compatible = "nxp,pca9548";
+		#address-cells = <1>;
+		#size-cells = <0>;
+		reg = <0x75>;
+		i2c-mux-idle-disconnect;
+
+		imux24: i2c@0 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <0>;
+		};
+
+		imux25: i2c@1 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <1>;
+		};
+
+		imux26: i2c@2 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <2>;
+		};
+
+		imux27: i2c@3 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <3>;
+		};
+
+		imux28: i2c@4 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <4>;
+		};
+
+		imux29: i2c@5 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <5>;
+		};
+
+		imux30: i2c@6 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <6>;
+		};
+
+		imux31: i2c@7 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <7>;
+		};
+	};
+};
+
+&i2c11 {
+	status = "okay";
+};
-- 
2.17.1