ARM: dts: aspeed: Add Facebook Backpack-CMM BMC

Add initial version of device tree file for Facebook Backpack CMM
(Chasis Management Module) ast2500 BMC.

Signed-off-by: Tao Ren <taoren@fb.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 b0e966d..ffac701 100644 (file)
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -1212,6 +1212,7 @@ dtb-$(CONFIG_ARCH_ASPEED) += \
        aspeed-ast2500-evb.dtb \
        aspeed-bmc-arm-centriq2400-rep.dtb \
        aspeed-bmc-arm-stardragon4800-rep2.dtb \
+       aspeed-bmc-facebook-cmm.dtb \
        aspeed-bmc-facebook-tiogapass.dtb \
        aspeed-bmc-intel-s2600wf.dtb \
        aspeed-bmc-opp-lanyang.dtb \

diff --git a/arch/arm/boot/dts/aspeed-bmc-facebook-cmm.dts b/arch/arm/boot/dts/aspeed-bmc-facebook-cmm.dts
new file mode 100644 (file)
index 0000000..9f194b5
--- /dev/null
+++ b/arch/arm/boot/dts/aspeed-bmc-facebook-cmm.dts
@@ -0,0 +1,368 @@
+// SPDX-License-Identifier: GPL-2.0+
+// Copyright (c) 2018 Facebook Inc.
+/dts-v1/;
+
+#include "aspeed-g5.dtsi"
+
+/ {
+       model = "Facebook Backpack CMM BMC";
+       compatible = "facebook,cmm-bmc", "aspeed,ast2500";
+
+       aliases {
+               /*
+                * Override the default uart aliases to avoid breaking
+                * the legacy applications.
+                */
+               serial0 = &uart5;
+               serial1 = &uart1;
+               serial2 = &uart3;
+               serial3 = &uart4;
+
+               /*
+                * Hardcode the bus number of i2c switches' channels to
+                * avoid breaking the legacy applications.
+                */
+               i2c16 = &imux16;
+               i2c17 = &imux17;
+               i2c18 = &imux18;
+               i2c19 = &imux19;
+               i2c20 = &imux20;
+               i2c21 = &imux21;
+               i2c22 = &imux22;
+               i2c23 = &imux23;
+               i2c24 = &imux24;
+               i2c25 = &imux25;
+               i2c26 = &imux26;
+               i2c27 = &imux27;
+               i2c28 = &imux28;
+               i2c29 = &imux29;
+               i2c30 = &imux30;
+               i2c31 = &imux31;
+               i2c32 = &imux32;
+               i2c33 = &imux33;
+               i2c34 = &imux34;
+               i2c35 = &imux35;
+               i2c36 = &imux36;
+               i2c37 = &imux37;
+               i2c38 = &imux38;
+               i2c39 = &imux39;
+       };
+
+       chosen {
+               stdout-path = &uart1;
+               bootargs = "console=ttyS1,9600n8 root=/dev/ram rw earlyprintk";
+       };
+
+       memory@80000000 {
+               reg = <0x80000000 0x20000000>;
+       };
+};
+
+&pinctrl {
+       aspeed,external-nodes = <&gfx &lhc>;
+};
+
+/*
+ * Update reset type to "system" (full chip) to fix warm reboot hang issue
+ * when reset type is set to default ("soc", gated by reset mask registers).
+ */
+&wdt1 {
+       status = "okay";
+       aspeed,reset-type = "system";
+};
+
+/*
+ * wdt2 is not used by Backpack CMM.
+ */
+&wdt2 {
+       status = "disabled";
+};
+
+&fmc {
+       status = "okay";
+       flash@0 {
+               status = "okay";
+               m25p,fast-read;
+               label = "bmc";
+#include "facebook-bmc-flash-layout.dtsi"
+       };
+};
+
+&uart1 {
+       status = "okay";
+       pinctrl-names = "default";
+       pinctrl-0 = <&pinctrl_txd1_default
+                    &pinctrl_rxd1_default
+                    &pinctrl_ncts1_default
+                    &pinctrl_ndcd1_default
+                    &pinctrl_ndsr1_default
+                    &pinctrl_ndtr1_default
+                    &pinctrl_nrts1_default>;
+};
+
+&uart3 {
+       status = "okay";
+       pinctrl-names = "default";
+       pinctrl-0 = <&pinctrl_txd3_default
+                    &pinctrl_rxd3_default
+                    &pinctrl_ncts3_default
+                    &pinctrl_ndcd3_default
+                    &pinctrl_nri3_default>;
+};
+
+&uart4 {
+       status = "okay";
+       pinctrl-names = "default";
+       pinctrl-0 = <&pinctrl_txd4_default
+                    &pinctrl_rxd4_default>;
+};
+
+&uart5 {
+       status = "okay";
+};
+
+&mac1 {
+       status = "okay";
+       no-hw-checksum;
+       pinctrl-names = "default";
+       pinctrl-0 = <&pinctrl_rgmii2_default &pinctrl_mdio2_default>;
+};
+
+/*
+ * I2C bus reserved for communication with COM-E.
+ */
+&i2c0 {
+       status = "okay";
+};
+
+/*
+ * I2C bus to Line Cards and Fabric Cards.
+ */
+&i2c1 {
+       status = "okay";
+
+       i2c-switch@77 {
+               compatible = "nxp,pca9548";
+               #address-cells = <1>;
+               #size-cells = <0>;
+               reg = <0x77>;
+
+               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>;
+               };
+       };
+};
+
+/*
+ * I2C bus to Power Distribution Board.
+ */
+&i2c2 {
+       status = "okay";
+
+       i2c-switch@71 {
+               compatible = "nxp,pca9548";
+               #address-cells = <1>;
+               #size-cells = <0>;
+               reg = <0x71>;
+
+               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>;
+               };
+       };
+};
+
+/*
+ * I2c bus connected with temperature sensors on CMM.
+ */
+&i2c3 {
+       status = "okay";
+};
+
+/*
+ * I2C bus reserved for communication with COM-E.
+ */
+&i2c4 {
+       status = "okay";
+};
+
+/*
+ * I2c bus connected with ADM1278.
+ */
+&i2c5 {
+       status = "okay";
+};
+
+/*
+ * I2c bus connected with I/O Expander.
+ */
+&i2c6 {
+       status = "okay";
+};
+
+/*
+ * I2c bus connected with I/O Expander and EPROMs.
+ */
+&i2c7 {
+       status = "okay";
+};
+
+/*
+ * I2C bus to Fan Control Board.
+ */
+&i2c8 {
+       status = "okay";
+
+       i2c-switch@77 {
+               compatible = "nxp,pca9548";
+               #address-cells = <1>;
+               #size-cells = <0>;
+               reg = <0x77>;
+
+               imux32: i2c@0 {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       reg = <0>;
+               };
+
+               imux33: i2c@1 {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       reg = <1>;
+               };
+
+               imux34: i2c@2 {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       reg = <2>;
+               };
+
+               imux35: i2c@3 {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       reg = <3>;
+               };
+
+               imux36: i2c@4 {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       reg = <4>;
+               };
+
+               imux37: i2c@5 {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       reg = <5>;
+               };
+
+               imux38: i2c@6 {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       reg = <6>;
+               };
+
+               imux39: i2c@7 {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       reg = <7>;
+               };
+       };
+};
+
+/*
+ * I2C bus to CMM CPLD.
+ */
+&i2c13 {
+       status = "okay";
+};
+
+&adc {
+       status = "okay";
+};