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Message-Id: <20211130180110.2217042-1-aaelhaj@google.com>
Date: Tue, 30 Nov 2021 13:01:10 -0500
From: Ali El-Haj-Mahmoud <aaelhaj@...gle.com>
To: linux-arm-kernel@...ts.infradead.org,
linux-aspeed@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Cc: Rob Herring <robh+dt@...nel.org>, Joel Stanley <joel@....id.au>,
Andrew Jeffery <andrew@...id.au>, Oskar Sneft <osk@...gle.com>,
Ali El-Haj-Mahmoud <aaelhaj@...gle.com>
Subject: [PATCH] ARM: dts: aspeed: Add TYAN S8036 BMC machine
The TYAN S8036 is a server platform with an ASPEED AST2500 BMC.
Signed-off-by: Ali El-Haj-Mahmoud <aaelhaj@...gle.com>
---
arch/arm/boot/dts/Makefile | 3 +-
arch/arm/boot/dts/aspeed-bmc-tyan-s8036.dts | 466 ++++++++++++++++++++
2 files changed, 468 insertions(+), 1 deletion(-)
create mode 100644 arch/arm/boot/dts/aspeed-bmc-tyan-s8036.dts
diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index 8b7f150be39e..b0ca5e88942b 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -1499,4 +1499,5 @@ dtb-$(CONFIG_ARCH_ASPEED) += \
aspeed-bmc-quanta-q71l.dtb \
aspeed-bmc-supermicro-x11spi.dtb \
aspeed-bmc-inventec-transformers.dtb \
- aspeed-bmc-tyan-s7106.dtb
+ aspeed-bmc-tyan-s7106.dtb \
+ aspeed-bmc-tyan-s8036.dtb
diff --git a/arch/arm/boot/dts/aspeed-bmc-tyan-s8036.dts b/arch/arm/boot/dts/aspeed-bmc-tyan-s8036.dts
new file mode 100644
index 000000000000..873e7bf2361e
--- /dev/null
+++ b/arch/arm/boot/dts/aspeed-bmc-tyan-s8036.dts
@@ -0,0 +1,466 @@
+// SPDX-License-Identifier: GPL-2.0+
+/dts-v1/;
+
+#include "aspeed-g5.dtsi"
+#include <dt-bindings/gpio/aspeed-gpio.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+
+/ {
+ model = "Tyan S8036 BMC";
+ compatible = "tyan,s8036-bmc", "aspeed,ast2500";
+
+ chosen {
+ stdout-path = &uart5;
+ bootargs = "console=ttyS4,115200 earlycon";
+ };
+
+ memory@...00000 {
+ device_type = "memory";
+ reg = <0x80000000 0x20000000>;
+ };
+
+ reserved-memory {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges;
+
+ p2a_memory: region@...f0000 {
+ no-map;
+ reg = <0x987f0000 0x00010000>; /* 64KB */
+ };
+
+ vga_memory: framebuffer@...00000 {
+ 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";
+};
+
+&uart_routing {
+ status = "okay";
+};
+
+&vuart {
+ status = "okay";
+
+ /* We enable the VUART here, but leave it in a state that does
+ * not interfere with the SuperIO. The goal is to have both the
+ * VUART and the SuperIO available and decide at runtime whether
+ * the VUART should actually be used. For that reason, configure
+ * an "invalid" IO address and an IRQ that is not used by the
+ * BMC.
+ */
+ aspeed,lpc-io-reg = <0xffff>;
+ aspeed,lpc-interrupts = <15 IRQ_TYPE_LEVEL_HIGH>;
+};
+
+&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 */
+ fan@0 {
+ reg = <0x00>;
+ aspeed,fan-tach-ch = /bits/ 8 <0x00>;
+ };
+
+ /* 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 {
+ /* Directly connected to Sideband-Temperature Sensor Interface (APML) */
+ status = "okay";
+};
+
+&i2c1 {
+ /* Directly connected to IPMB HDR. */
+ status = "okay";
+};
+
+&i2c2 {
+ status = "okay";
+
+ /* BMC EEPROM, incl. mainboard FRU */
+ eeprom@50 {
+ compatible = "atmel,24c256";
+ reg = <0x50>;
+ };
+ /* Also connected to:
+ * - BCM5720
+ * - FPGA
+ * - FAN HDR
+ * - FPIO HDR
+ */
+};
+
+&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>;
+ };
+
+};
+
+&i2c4 {
+ status = "okay";
+};
+
+&i2c5 {
+ status = "okay";
+ /* Hardware monitor with temperature sensors */
+ nct7802@28 {
+ compatible = "nuvoton,nct7802";
+ reg = <0x28>;
+ channel@0 { /* LTD */
+ reg = <0>;
+ status = "okay";
+ };
+ channel@1 { /* RTD1 */
+ reg = <1>;
+ status = "okay";
+ sensor-type = "temperature";
+ temperature-mode = "thermistor";
+ };
+
+ channel@2 { /* RTD2 */
+ reg = <2>;
+ status = "okay";
+ sensor-type = "temperature";
+ temperature-mode = "thermistor";
+ };
+
+ channel@3 { /* RTD3 */
+ reg = <3>;
+ status = "okay";
+ sensor-type = "temperature";
+ };
+ };
+
+ /* Also connected to:
+ * - PCA9544
+ * - CLK BUFF
+ * - OCP FRU
+ */
+};
+
+&i2c6 {
+ status = "okay";
+ /* Connected to:
+ * - PCA9548 @0xE0
+ * - PCA9548 @0xE2
+ * - PCA9544 @0xE4
+ */
+};
+
+&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_CHASSIS_ID_LED_L */
+ /*A3*/ "",
+ /*A4*/ "",
+ /*A5*/ "",
+ /*A6*/ "",
+ /*A7*/ "",
+ /*B0-B7*/ "","","","","","","","",
+ /*C0-C7*/ "","","","","","","","",
+ /*D0*/ "",
+ /*D1*/ "",
+ /*D2*/ "power-chassis-good", /* in: PWR_GOOD_LED -- Check if this is Z3?*/
+ /*D3*/ "platform-reset", /* in: RESET_LED_L */
+ /*D4*/ "",
+ /*D5*/ "",
+ /*D6*/ "",
+ /*D7*/ "",
+ /*E0*/ "power-button", /* in: BMC_SYS_MON_PWR_BTN_L */
+ /*E1*/ "power-chassis-control", /* out: BMC_ASSERT_PWR_BTN */
+ /*E2*/ "reset-button", /* in: BMC_SYS_MOS_RST_BTN_L*/
+ /*E3*/ "reset-control", /* out: BMC_ASSERT_RST_BTN */
+ /*E4*/ "nmi-button", /* in: BMC_SYS_MON_NMI_BTN_L */
+ /*E5*/ "nmi-control", /* out: BMC_ASSERT_NMI_BTN */
+ /*E6*/ "TSI_RESERT",
+ /*E7*/ "led-heartbeat", /* out: BMC_GPIOE7 */
+ /*F0*/ "",
+ /*F1*/ "clear-cmos-control", /* out: BMC_ASSERT_CLR_CMOS_L */
+ /*F2*/ "",
+ /*F3*/ "",
+ /*F4*/ "led-fault", /* out: BMC_HWM_FAULT_LED_L */
+ /*F5*/ "BMC_SYS_FAULT_LED_L",
+ /*F6*/ "BMC_ASSERT_BIOS_WP_L",
+ /*F7*/ "",
+ /*G0-G7*/ "","","","","","","","",
+ /*H0-H7*/ "","","","","","","","",
+ /*I0-I7*/ "","","","","","","","",
+ /*J0-J7*/ "","","","","","","","",
+ /*K0-K7*/ "","","","","","","","",
+ /*L0-L7*/ "","","","","","","","",
+ /*M0-M7*/ "","","","","","","","",
+ /*N0-N7*/ "","","","","","","","",
+ /*O0-O7*/ "","","","","","","","",
+ /*P0-P7*/ "","","","","","","","",
+ /*Q0*/ "",
+ /*Q1*/ "",
+ /*Q2*/ "",
+ /*Q3*/ "",
+ /*Q4*/ "",
+ /*Q5*/ "",
+ /*Q6*/ "id-button", /* in: BMC_CHASSIS_ID_BTN_L */
+ /*Q7*/ "",
+ /*R0-R7*/ "","","","","","","","",
+ /*S0-S7*/ "","","","","","","","",
+ /*T0-T7*/ "","","","","","","","",
+ /*U0-U7*/ "","","","","","","","",
+ /*V0-V7*/ "","","","","","","","",
+ /*W0-W7*/ "","","","","","","","",
+ /*X0-X7*/ "","","","","","","","",
+ /*Y0-Y7*/ "","","","","","","","",
+ /*Z0-Z2*/ "","","",
+ /*Z3*/ "post-complete", /* BMC_SYS_MON_PWROK */
+ /*Z4-Z7*/ "","","","",
+ /*AA0*/ "",
+ /*AA1*/ "",
+ /*AA2*/ "",
+ /*AA3*/ "",
+ /*AA4*/ "",
+ /*AA5*/ "",
+ /*AA6*/ "",
+ /*AA7*/ "BMC_ASSERT_BMC_READY",
+ /*AB0*/ "BMC_SPD_SEL",
+ /*AB1-AB7*/ "","","","","","","";
+};
--
2.34.0.rc2.393.gf8c9666880-goog
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