ARM: dts: aspeed: Add Facebook Elbert (AST2600) BMC

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@gmail.com>
Signed-off-by: Joel Stanley <joel@jms.id.au>
Link: https://lore.kernel.org/r/20210805222818.8391-6-rentao.bupt@gmail.com
Signed-off-by: Joel Stanley <joel@jms.id.au>

diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index da19be0..d985e74 100644 (file)
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -1435,6 +1435,7 @@ 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 (file)
index 0000000..27b43fe
--- /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";
+};