--- /dev/null
+// SPDX-License-Identifier: GPL-2.0+
+/dts-v1/;
+
+#include "aspeed-g5.dtsi"
+#include <dt-bindings/gpio/aspeed-gpio.h>
+
+/ {
+ model = "Tyan S7106 BMC";
+ compatible = "tyan,s7106-bmc", "aspeed,ast2500";
+
+ chosen {
+ stdout-path = &uart5;
+ bootargs = "console=ttyS4,115200 earlycon";
+ };
+
+ memory@80000000 {
+ device_type = "memory";
+ reg = <0x80000000 0x20000000>;
+ };
+
+ reserved-memory {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges;
+
+ p2a_memory: region@987f0000 {
+ no-map;
+ reg = <0x987f0000 0x00010000>; /* 64KB */
+ };
+
+ vga_memory: framebuffer@9f000000 {
+ no-map;
+ reg = <0x9f000000 0x01000000>; /* 16M */
+ };
+
+ gfx_memory: framebuffer {
+ size = <0x01000000>; /* 16M */
+ alignment = <0x01000000>;
+ compatible = "shared-dma-pool";
+ reusable;
+ };
+ };
+
+ leds {
+ compatible = "gpio-leds";
+
+ identify {
+ gpios = <&gpio ASPEED_GPIO(A, 2) GPIO_ACTIVE_LOW>;
+ };
+
+ heartbeat {
+ gpios = <&gpio ASPEED_GPIO(E, 7) GPIO_ACTIVE_LOW>;
+ };
+ };
+
+ iio-hwmon {
+ compatible = "iio-hwmon";
+ io-channels = <&adc 0>, <&adc 1>, <&adc 2>, <&adc 3>,
+ <&adc 4>, <&adc 5>, <&adc 6>, <&adc 7>,
+ <&adc 8>, <&adc 9>, <&adc 10>, <&adc 11>,
+ <&adc 12>, <&adc 13>, <&adc 14>;
+ };
+
+ iio-hwmon-battery {
+ compatible = "iio-hwmon";
+ io-channels = <&adc 15>;
+ };
+};
+
+&fmc {
+ status = "okay";
+ flash@0 {
+ label = "bmc";
+ status = "okay";
+ m25p,fast-read;
+#include "openbmc-flash-layout.dtsi"
+ };
+};
+
+&spi1 {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_spi1_default>;
+
+ flash@0 {
+ status = "okay";
+ label = "pnor";
+ m25p,fast-read;
+ };
+};
+
+&uart1 {
+ /* Rear RS-232 connector */
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_txd1_default
+ &pinctrl_rxd1_default>;
+};
+
+&uart2 {
+ /* RS-232 connector on header */
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_txd2_default
+ &pinctrl_rxd2_default>;
+};
+
+&uart3 {
+ /* Alternative to vuart to internally connect (route) to uart1
+ * when vuart cannot be used due to BIOS limitations.
+ */
+ status = "okay";
+};
+
+&uart4 {
+ /* Alternative to vuart to internally connect (route) to the
+ * external port usually used by uart1 when vuart cannot be
+ * used due to BIOS limitations.
+ */
+ status = "okay";
+};
+
+&uart5 {
+ /* BMC "debug" (console) UART; connected to RS-232 connector
+ * on header; selectable via jumpers as alternative to uart2
+ */
+ status = "okay";
+};
+
+&vuart {
+ status = "okay";
+};
+
+&lpc_ctrl {
+ status = "okay";
+};
+
+&p2a {
+ status = "okay";
+ memory-region = <&p2a_memory>;
+};
+
+&lpc_snoop {
+ status = "okay";
+ snoop-ports = <0x80>;
+};
+
+&adc {
+ status = "okay";
+};
+
+&vhub {
+ status = "okay";
+};
+
+&pwm_tacho {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_pwm0_default
+ &pinctrl_pwm1_default
+ &pinctrl_pwm3_default
+ &pinctrl_pwm4_default>;
+
+ /* CPU fan #0 */
+ fan@0 {
+ reg = <0x00>;
+ aspeed,fan-tach-ch = /bits/ 8 <0x00>;
+ };
+
+ /* CPU fan #1 */
+ fan@1 {
+ reg = <0x01>;
+ aspeed,fan-tach-ch = /bits/ 8 <0x01>;
+ };
+
+ /* PWM group for chassis fans #1, #2, #3 and #4 */
+ fan@2 {
+ reg = <0x03>;
+ aspeed,fan-tach-ch = /bits/ 8 <0x02>;
+ };
+
+ fan@3 {
+ reg = <0x03>;
+ aspeed,fan-tach-ch = /bits/ 8 <0x03>;
+ };
+
+ fan@4 {
+ reg = <0x03>;
+ aspeed,fan-tach-ch = /bits/ 8 <0x04>;
+ };
+
+ fan@5 {
+ reg = <0x03>;
+ aspeed,fan-tach-ch = /bits/ 8 <0x05>;
+ };
+
+ /* PWM group for chassis fans #5 and #6 */
+ fan@6 {
+ reg = <0x04>;
+ aspeed,fan-tach-ch = /bits/ 8 <0x06>;
+ };
+
+ fan@7 {
+ reg = <0x04>;
+ aspeed,fan-tach-ch = /bits/ 8 <0x07>;
+ };
+};
+
+&i2c0 {
+ status = "okay";
+
+ /* Hardware monitor with temperature sensors */
+ nct7802@28 {
+ compatible = "nuvoton,nct7802";
+ reg = <0x28>;
+ };
+
+ /* Also connected to:
+ * - IPMB pin header
+ * - CPU #0 memory error LED @ 0x3A
+ * - CPU #1 memory error LED @ 0x3C
+ */
+};
+
+&i2c1 {
+ /* Directly connected to PCH SMBUS #0 */
+ status = "okay";
+};
+
+&i2c2 {
+ status = "okay";
+
+ /* BMC EEPROM, incl. mainboard FRU */
+ eeprom@50 {
+ compatible = "atmel,24c256";
+ reg = <0x50>;
+ };
+
+ /* Also connected to:
+ * - fan header
+ * - mini-SAS HD connector
+ * - SSATA SGPIO
+ * - via switch (BMC_SMB3_PCH_IE_SML3_EN, active low)
+ * to PCH SMBUS #3
+ */
+};
+
+&i2c3 {
+ status = "okay";
+
+ /* PSU1 FRU @ 0xA0 */
+ eeprom@50 {
+ compatible = "atmel,24c02";
+ reg = <0x50>;
+ };
+
+ /* PSU2 FRU @ 0xA2 */
+ eeprom@51 {
+ compatible = "atmel,24c02";
+ reg = <0x51>;
+ };
+
+ /* PSU1 @ 0xB0 */
+ power-supply@58 {
+ compatible = "pmbus";
+ reg = <0x58>;
+ };
+
+ /* PSU2 @ 0xB2 */
+ power-supply@59 {
+ compatible = "pmbus";
+ reg = <0x59>;
+ };
+
+ /* Also connected to:
+ * - PCH SMBUS #1
+ */
+};
+
+&i2c4 {
+ status = "okay";
+
+ /* Connected to:
+ * - PCH SMBUS #2
+ */
+
+ /* Connected via switch to:
+ * - CPU #0 channels ABC VDDQ @ 0x80
+ * - CPU #0 channels DEF VDDQ @ 0x81
+ * - CPU #1 channels ABC VDDQ @ 0x82
+ * - CPU #1 channels DEF VDDQ @ 0x83
+ * - CPU #0 VCCIO & VMCP @ 0x52
+ * - CPU #1 VCCIO & VMCP @ 0x53
+ * - CPU #0 VCCIN @ 0xC0
+ * - CPU #0 VSA @ 0xC2
+ * - CPU #1 VCCIN @ 0xC4
+ * - CPU #1 VSA @ 0xC6
+ * - J110
+ */
+};
+
+&i2c5 {
+ status = "okay";
+
+ /* Connected via switch (PCH_BMC_SMB_SW_P) to:
+ * - mainboard FRU @ 0xAE
+ * - XDP connector
+ * - ME debug header
+ * - clock buffer @ 0xD8
+ * - i2c4 via switch (PCH_VR_SMBUS_SW_P; controlled by PCH)
+ * - PCH SMBUS
+ */
+};
+
+&i2c6 {
+ status = "okay";
+
+ /* Connected via switch (BMC_PE_SMB_EN_1_N) to
+ * bus mux (selector BMC_PE_SMB_SW_BIT[1..0]) to:
+ * - 0,0: PCIE slot 1, SMB #1
+ * - 0,1: PCIE slot 1, SMB #2
+ * - 1,0: PCIE slot 2, SMB #1
+ * - 1,1: PCIE slot 2, SMB #2
+ */
+
+ /* Connected via switch (BMC_PE_SMB_EN_2_N) to
+ * bus mux (selector BMC_PE_SMB_SW_BIT[1..0]) to:
+ * - 0,0: OCP0 (A) SMB
+ * - 0,1: OCP0 (C) SMB
+ * - 1,0: OCP1 (A) SMB
+ * - 1,1: NC
+ */
+};
+
+&i2c7 {
+ status = "okay";
+
+ /* Connected to:
+ * - PCH SMBUS #4
+ */
+};
+
+&i2c8 {
+ status = "okay";
+
+ /* Not connected */
+};
+
+&mac0 {
+ status = "okay";
+ use-ncsi;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_rmii1_default>;
+};
+
+&mac1 {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_rgmii2_default &pinctrl_mdio2_default>;
+};
+
+&ibt {
+ status = "okay";
+};
+
+&kcs1 {
+ status = "okay";
+ aspeed,lpc-io-reg = <0xca8>;
+};
+
+&kcs3 {
+ status = "okay";
+ aspeed,lpc-io-reg = <0xca2>;
+};
+
+/* Enable BMC VGA output to show an early (pre-BIOS) boot screen */
+&gfx {
+ status = "okay";
+ memory-region = <&gfx_memory>;
+};
+
+/* We're following the GPIO naming as defined at
+ * https://github.com/openbmc/docs/blob/master/designs/device-tree-gpio-naming.md.
+ *
+ * Notes on led-identify and id-button:
+ * - A physical button is connected to id-button which
+ * triggers the clock on a D flip-flop. The /Q output of the
+ * flip-flop drives its D input.
+ * - The flip-flop's Q output drives led-identify which is
+ * connected to LEDs.
+ * - With that, every button press toggles the LED between on and off.
+ *
+ * Notes on power-, reset- and nmi- button and control:
+ * - The -button signals can be used to monitor physical buttons.
+ * - The -control signals can be used to actuate the specific
+ * operation.
+ * - In hardware, the -button signals are connected to the -control
+ * signals through drivers with the -control signals being
+ * protected through diodes.
+ */
+&gpio {
+ status = "okay";
+ gpio-line-names =
+ /*A0*/ "",
+ /*A1*/ "",
+ /*A2*/ "led-identify", /* in/out: BMC_IDLED_ON_N */
+ /*A3*/ "",
+ /*A4*/ "",
+ /*A5*/ "",
+ /*A6*/ "",
+ /*A7*/ "",
+ /*B0-B7*/ "","","","","","","","",
+ /*C0*/ "",
+ /*C1*/ "",
+ /*C2*/ "",
+ /*C3*/ "",
+ /*C4*/ "id-button", /* in/out: BMC_IDBTN_IN_OUT_N */
+ /*C5*/ "post-complete", /* in: FM_BIOS_POST_CMPLT_N */
+ /*C6*/ "",
+ /*C7*/ "",
+ /*D0*/ "",
+ /*D1*/ "",
+ /*D2*/ "power-chassis-good", /* in: SYS_PWROK_BUF */
+ /*D3*/ "platform-reset", /* in: SYS_PLTRST_N */
+ /*D4*/ "",
+ /*D5*/ "",
+ /*D6*/ "",
+ /*D7*/ "",
+ /*E0*/ "power-button", /* in: BMC_PWBTN_IN_N */
+ /*E1*/ "power-chassis-control", /* out: BMC_PWRBTN_OUT_N */
+ /*E2*/ "reset-button", /* in: BMC_RSTBTN_IN_N */
+ /*E3*/ "reset-control", /* out: BMC_RSTBTN_OUT_N */
+ /*E4*/ "nmi-button", /* in: BMC_NMIBTN_IN_N */
+ /*E5*/ "nmi-control", /* out: BMC_NMIBTN_OUT_N */
+ /*E6*/ "",
+ /*E7*/ "led-heartbeat", /* out: BMC_HEARTBRAT_LED_N */
+ /*F0*/ "",
+ /*F1*/ "clear-cmos-control", /* out: BMC_CLR_CMOS_N */
+ /*F2*/ "",
+ /*F3*/ "",
+ /*F4*/ "led-fault", /* out: AST_HW_FAULT_N */
+ /*F5*/ "",
+ /*F6*/ "",
+ /*F7*/ "",
+ /*G0*/ "BMC_PE_SMB_EN_1_N", /* out */
+ /*G1*/ "BMC_PE_SMB_EN_2_N", /* out */
+ /*G2*/ "",
+ /*G3*/ "",
+ /*G4*/ "",
+ /*G5*/ "",
+ /*G6*/ "",
+ /*G7*/ "",
+ /*H0-H7*/ "","","","","","","","",
+ /*I0-I7*/ "","","","","","","","",
+ /*J0-J7*/ "","","","","","","","",
+ /*K0-K7*/ "","","","","","","","",
+ /*L0-L7*/ "","","","","","","","",
+ /*M0-M7*/ "","","","","","","","",
+ /*N0-N7*/ "","","","","","","","",
+ /*O0-O7*/ "","","","","","","","",
+ /*P0-P7*/ "","","","","","","","",
+ /*Q0*/ "",
+ /*Q1*/ "",
+ /*Q2*/ "",
+ /*Q3*/ "",
+ /*Q4*/ "BMC_PE_SMB_SW_BIT0", /* out */
+ /*Q5*/ "BMC_PE_SMB_SW_BIT1", /* out */
+ /*Q6*/ "",
+ /*Q7*/ "",
+ /*R0-R7*/ "","","","","","","","",
+ /*S0-S7*/ "","","","","","","","",
+ /*T0-T7*/ "","","","","","","","",
+ /*U0-U7*/ "","","","","","","","",
+ /*V0-V7*/ "","","","","","","","",
+ /*W0-W7*/ "","","","","","","","",
+ /*X0-X7*/ "","","","","","","","",
+ /*Y0-Y7*/ "","","","","","","","",
+ /*Z0-Z7*/ "","","","","","","","",
+ /*AA0*/ "",
+ /*AA1*/ "",
+ /*AA2*/ "",
+ /*AA3*/ "BMC_SMB3_PCH_IE_SML3_EN", /* out */
+ /*AA4*/ "",
+ /*AA5*/ "",
+ /*AA6*/ "",
+ /*AA7*/ "",
+ /*AB0-AB7*/ "","","","","","","","";
+};
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