This is a relatively low-cost AST2500-based Xeon E-2100/E-2200 series
mini-ITX board that we hope can provide a decent platform for OpenBMC
development.
This initial device-tree provides the necessary configuration for
basic BMC functionality such as host power control, serial console and
KVM support, and POST code snooping.
Signed-off-by: Zev Weiss <zev@xxxxxxxxxxxxxxxxx>
---
.../boot/dts/aspeed-bmc-asrock-e3c246d4i.dts | 188 ++++++++++++++++++
1 file changed, 188 insertions(+)
create mode 100644 arch/arm/boot/dts/aspeed-bmc-asrock-e3c246d4i.dts
diff --git a/arch/arm/boot/dts/aspeed-bmc-asrock-e3c246d4i.dts b/arch/arm/boot/dts/aspeed-bmc-asrock-e3c246d4i.dts
new file mode 100644
index 000000000000..27b34c3cf67a
--- /dev/null
+++ b/arch/arm/boot/dts/aspeed-bmc-asrock-e3c246d4i.dts
@@ -0,0 +1,188 @@
+// SPDX-License-Identifier: GPL-2.0+
+/dts-v1/;
+
+#include "aspeed-g5.dtsi"
+#include <dt-bindings/gpio/aspeed-gpio.h>
+#include <dt-bindings/i2c/i2c.h>
+
+/{
+ model = "ASRock E3C246D4I BMC";
+ compatible = "aspeed,ast2500";
+
+ aliases {
+ serial4 = &uart5;
+ };
+
+ chosen {
+ stdout-path = &uart5;
+ bootargs = "console=tty0 console=ttyS4,115200 earlyprintk";
+ };
+
+ memory@80000000 {
+ reg = <0x80000000 0x20000000>;
+ };
+
+ leds {
+ compatible = "gpio-leds";
+
+ heartbeat {
+ /* BMC_HB_LED_N */
+ gpios = <&gpio ASPEED_GPIO(H, 6) GPIO_ACTIVE_LOW>;
+ linux,default-trigger = "timer";
+ };
+
+ system-fault {
+ /* SYSTEM_FAULT_LED_N */
+ gpios = <&gpio ASPEED_GPIO(Z, 2) GPIO_ACTIVE_LOW>;
+ panic-indicator;
+ };
+ };
+
+ gpio-keys {
+ compatible = "gpio-keys";
+
+ uid-button {
+ label = "uid-button";
+ gpios = <&gpio ASPEED_GPIO(F, 1) GPIO_ACTIVE_LOW>;
+ linux,code = <ASPEED_GPIO(F, 1)>;
+ };
+ };
+
+ 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>;
+ };
+};
+
+&fmc {
+ status = "okay";
+ flash@0 {
+ status = "okay";
+ m25p,fast-read;
+ label = "bmc";
+ spi-max-frequency = <100000000>; /* 100 MHz */
+#include "openbmc-flash-layout.dtsi"
+ };
+};
+
+&uart5 {
+ status = "okay";
+};
+
+&vuart {
+ status = "okay";
+ aspeed,sirq-active-high;
+};
+
+&mac0 {
+ status = "okay";
+
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_rgmii1_default &pinctrl_mdio1_default>;
+};
+
+&i2c1 {
+ status = "okay";
+
+ /* thermal sensor, one diode run to a disconnected header */
+ w83773g@4c {
+ compatible = "nuvoton,w83773g";
+ reg = <0x4c>;
+ };
+};
+
+&i2c3 {
+ status = "okay";
+
+ /* FRU EEPROM */
+ eeprom@57 {
+ compatible = "st,24c128", "atmel,24c128";
+ reg = <0x57>;
+ pagesize = <16>;
+ };
+};
+
+&video {
+ status = "okay";
+};
+
+&vhub {
+ status = "okay";
+};
+
+&lpc_ctrl {
+ status = "okay";
+};
+
+&lpc_snoop {
+ status = "okay";
+ snoop-ports = <0x80>;
+};
+
+&gpio {
+ status = "okay";
+ gpio-line-names =
+ /* A */ "BMC_MAC1_INTB", "BMC_MAC2_INTB", "NMI_BTN_N", "BMC_NMI",
+ "", "", "", "",
+ /* B */ "", "", "", "", "", "IRQ_BMC_PCH_SMI_LPC_N", "", "",
+ /* C */ "", "", "", "", "", "", "", "",
+ /* D */ "BMC_PSIN", "BMC_PSOUT", "BMC_RESETCON", "RESETCON",
+ "", "", "", "",
+ /* E */ "", "", "", "", "", "", "", "",
+ /* F */ "LOCATORLED_STATUS_N", "LOCATORBTN", "", "",
+ "", "", "BMC_PCH_SCI_LPC", "BMC_NCSI_MUX_CTL",
+ /* G */ "HWM_BAT_EN", "CHASSIS_ID0", "CHASSIS_ID1", "CHASSIS_ID2",
+ "BMC_ALERT1_N_R", "BMC_ALERT2_N_R", "BMC_ALERT3_N", "SML0ALERT",
+ /* H */ "FM_ME_RCVR_N", "O_PWROK", "SKL_CNL_R", "D4_DIMM_EVENT_3V_N",
+ "MFG_MODE_N", "BMC_RTCRST", "BMC_HB_LED_N", "BMC_CASEOPEN",
+ /* I */ "", "", "", "", "", "", "", "",
+ /* J */ "BMC_READY", "BMC_PCH_BIOS_CS_N", "BMC_SMI", "",
+ "", "", "", "",
+ /* K */ "", "", "", "", "", "", "", "",
+ /* L */ "BMC_CTS1", "BMC_DCD1", "BMC_DSR1", "BMC_RI1",
+ "BMC_DTR1", "BMC_RTS1", "BMC_TXD1", "BMC_RXD1",
+ /* M */ "BMC_LAN0_DIS_N", "BMC_LAN1_DIS_N", "", "",
+ "", "", "", "",
+ /* N */ "", "", "", "", "", "", "", "",
+ /* O */ "", "", "", "", "", "", "", "",
+ /* P */ "", "", "", "", "", "", "", "",
+ /* Q */ "", "", "", "",
+ "BMC_SBM_PRESENT_1_N", "BMC_SBM_PRESENT_2_N",
+ "BMC_SBM_PRESENT_3_N", "BMC_PCIE_WAKE_N",
+ /* R */ "", "", "", "", "", "", "", "",
+ /* S */ "PCHHOT_BMC_N", "", "RSMRST",
+ "", "", "", "", "",
+ /* T */ "", "", "", "", "", "", "", "",
+ /* U */ "", "", "", "", "", "", "", "",
+ /* V */ "", "", "", "", "", "", "", "",
+ /* W */ "PS_PWROK", /* dummy always-high signal */
+ "", "", "", "", "", "", "",
+ /* X */ "", "", "", "", "", "", "", "",
+ /* Y */ "SLP_S3", "SLP_S5", "", "", "", "", "", "",
+ /* Z */ "CPU_CATERR_BMC_PCH_N", "", "SYSTEM_FAULT_LED_N", "BMC_THROTTLE_N",
+ "", "", "", "",
+ /* AA */ "CPU1_THERMTRIP_LATCH_N", "", "CPU1_PROCHOT_N", "",
+ "", "", "IRQ_SMI_ACTIVE_N", "FM_BIOS_POST_CMPLT_N",
+ /* AB */ "", "", "ME_OVERRIDE", "BMC_DMI_MODIFY",
+ "", "", "", "",
+ /* AC */ "LAD0", "LAD1", "LAD2", "LAD3",
+ "CK_33M_BMC", "LFRAME", "SERIRQ", "S_PLTRST";
+
+ /* Assert BMC_READY so BIOS doesn't sit around waiting for it */
+ bmc-ready {
+ gpio-hog;
+ gpios = <ASPEED_GPIO(J, 0) GPIO_ACTIVE_LOW>;
+ output-high;
+ };
+};
+
+&adc {
+ status = "okay";
+};
+
+&kcs3 {
+ status = "okay";
+ aspeed,lpc-io-reg = <0xca2>;
+};
--
2.31.1
