Re: [PATCH v3 3/3] ARM: dts: aspeed: Add Mihawk BMC platform

From: Andrew Jeffery
Date: Thu Aug 01 2019 - 23:04:17 EST

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In reply to: Ben Pai: "[PATCH v3 3/3] ARM: dts: aspeed: Add Mihawk BMC platform"
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On Thu, 1 Aug 2019, at 19:48, Ben Pai wrote:
> The Mihawk BMC is an ASPEED ast2500 based BMC that is part of an
> OpenPower Power9 server.
>
> Signed-off-by: Ben Pai <Ben_Pai@xxxxxxxxxxx>
> ---
> arch/arm/boot/dts/Makefile | 1 +
> arch/arm/boot/dts/aspeed-bmc-opp-mihawk.dts | 902 ++++++++++++++++++++
> 2 files changed, 903 insertions(+)
> create mode 100755 arch/arm/boot/dts/aspeed-bmc-opp-mihawk.dts
>
> diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
> index eb6de52c1936..cdfe0f43ffd3 100644
> --- a/arch/arm/boot/dts/Makefile
> +++ b/arch/arm/boot/dts/Makefile
> @@ -1275,6 +1275,7 @@ dtb-$(CONFIG_ARCH_ASPEED) += \
> aspeed-bmc-lenovo-hr630.dtb \
> aspeed-bmc-microsoft-olympus.dtb \
> aspeed-bmc-opp-lanyang.dtb \
> + aspeed-bmc-opp-mihawk.dtb \
> aspeed-bmc-opp-palmetto.dtb \
> aspeed-bmc-opp-romulus.dtb \
> aspeed-bmc-opp-swift.dtb \
> diff --git a/arch/arm/boot/dts/aspeed-bmc-opp-mihawk.dts
> b/arch/arm/boot/dts/aspeed-bmc-opp-mihawk.dts
> new file mode 100755
> index 000000000000..ca42057c0c1f
> --- /dev/null
> +++ b/arch/arm/boot/dts/aspeed-bmc-opp-mihawk.dts
> @@ -0,0 +1,902 @@
> +/dts-v1/;
> +
> +#include "aspeed-g5.dtsi"
> +#include <dt-bindings/gpio/aspeed-gpio.h>
> +#include <dt-bindings/leds/leds-pca955x.h>
> +
> +/ {
> + model = "Mihawk BMC";
> + compatible = "ibm,mihawk-bmc", "aspeed,ast2500";
> +
> +
> + chosen {
> + stdout-path = &uart5;
> + bootargs = "console=ttyS4,115200 earlyprintk";
> + };
> +
> + memory@80000000 {
> + reg = <0x80000000 0x20000000>; /* address and size of RAM(512MB) */
> + };
> +
> + reserved-memory {
> + #address-cells = <1>;
> + #size-cells = <1>;
> + ranges;
> +
> + flash_memory: region@98000000 {
> + no-map;
> + reg = <0x98000000 0x04000000>; /* 64M */
> + };
> +
> + gfx_memory: framebuffer {
> + size = <0x01000000>;
> + alignment = <0x01000000>;
> + compatible = "shared-dma-pool";
> + reusable;
> + };
> +
> + video_engine_memory: jpegbuffer {
> + size = <0x02000000>; /* 32MM */
> + alignment = <0x01000000>;
> + compatible = "shared-dma-pool";
> + reusable;
> + };
> + };
> +
> + gpio-keys {
> + compatible = "gpio-keys";
> +
> + air-water {
> + label = "air-water";
> + gpios = <&gpio ASPEED_GPIO(F, 6) GPIO_ACTIVE_LOW>;
> + linux,code = <ASPEED_GPIO(F, 6)>;
> + };
> +
> + checkstop {
> + label = "checkstop";
> + gpios = <&gpio ASPEED_GPIO(J, 2) GPIO_ACTIVE_LOW>;
> + linux,code = <ASPEED_GPIO(J, 2)>;
> + };
> +
> + ps0-presence {
> + label = "ps0-presence";
> + gpios = <&gpio ASPEED_GPIO(Z, 2) GPIO_ACTIVE_LOW>;
> + linux,code = <ASPEED_GPIO(Z, 2)>;
> + };
> +
> + ps1-presence {
> + label = "ps1-presence";
> + gpios = <&gpio ASPEED_GPIO(Z, 0) GPIO_ACTIVE_LOW>;
> + linux,code = <ASPEED_GPIO(Z, 0)>;
> + };
> + id-button {
> + label = "id-button";
> + gpios = <&gpio ASPEED_GPIO(F, 1) GPIO_ACTIVE_LOW>;
> + linux,code = <ASPEED_GPIO(F, 1)>;
> + };
> + };
> +
> + gpio-keys-polled {
> + compatible = "gpio-keys-polled";
> + poll-interval = <1000>;
> +
> + fan0-presence {
> + label = "fan0-presence";
> + gpios = <&pca9552 9 GPIO_ACTIVE_LOW>;
> + linux,code = <9>;
> + };
> +
> + fan1-presence {
> + label = "fan1-presence";
> + gpios = <&pca9552 10 GPIO_ACTIVE_LOW>;
> + linux,code = <10>;
> + };
> +
> + fan2-presence {
> + label = "fan2-presence";
> + gpios = <&pca9552 11 GPIO_ACTIVE_LOW>;
> + linux,code = <11>;
> + };
> +
> + fan3-presence {
> + label = "fan3-presence";
> + gpios = <&pca9552 12 GPIO_ACTIVE_LOW>;
> + linux,code = <12>;
> + };
> +
> + fan4-presence {
> + label = "fan4-presence";
> + gpios = <&pca9552 13 GPIO_ACTIVE_LOW>;
> + linux,code = <13>;
> + };
> +
> + fan5-presence {
> + label = "fan5-presence";
> + gpios = <&pca9552 14 GPIO_ACTIVE_LOW>;
> + linux,code = <14>;
> + };
> + };
> +
> + leds {
> + compatible = "gpio-leds";
> +
> + fault {
> + retain-state-shutdown;
> + default-state = "keep";
> + gpios = <&gpio ASPEED_GPIO(AA, 0) GPIO_ACTIVE_LOW>;
> + };
> +
> + power {
> + retain-state-shutdown;
> + default-state = "keep";
> + gpios = <&gpio ASPEED_GPIO(AA, 1) GPIO_ACTIVE_LOW>;
> + };
> +
> + rear-id {
> + retain-state-shutdown;
> + default-state = "keep";
> + gpios = <&gpio ASPEED_GPIO(AA, 2) GPIO_ACTIVE_LOW>;
> + };
> +
> + rear-g {
> + retain-state-shutdown;
> + default-state = "keep";
> + gpios = <&gpio ASPEED_GPIO(AA, 4) GPIO_ACTIVE_LOW>;
> + };
> +
> + rear-ok {
> + retain-state-shutdown;
> + default-state = "keep";
> + gpios = <&gpio ASPEED_GPIO(Y, 0) GPIO_ACTIVE_LOW>;
> + };
> +
> + fan0 {
> + retain-state-shutdown;
> + default-state = "keep";
> + gpios = <&pca9552 0 GPIO_ACTIVE_LOW>;
> + };
> +
> + fan1 {
> + retain-state-shutdown;
> + default-state = "keep";
> + gpios = <&pca9552 1 GPIO_ACTIVE_LOW>;
> + };
> +
> + fan2 {
> + retain-state-shutdown;
> + default-state = "keep";
> + gpios = <&pca9552 2 GPIO_ACTIVE_LOW>;
> + };
> +
> + fan3 {
> + retain-state-shutdown;
> + default-state = "keep";
> + gpios = <&pca9552 3 GPIO_ACTIVE_LOW>;
> + };
> +
> + fan4 {
> + retain-state-shutdown;
> + default-state = "keep";
> + gpios = <&pca9552 4 GPIO_ACTIVE_LOW>;
> + };
> +
> + fan5 {
> + retain-state-shutdown;
> + default-state = "keep";
> + gpios = <&pca9552 5 GPIO_ACTIVE_LOW>;
> + };
> + };
> +
> + fsi: gpio-fsi {
> + compatible = "fsi-master-gpio", "fsi-master";
> + #address-cells = <2>;
> + #size-cells = <0>;
> + no-gpio-delays;
> +
> + clock-gpios = <&gpio ASPEED_GPIO(E, 6) GPIO_ACTIVE_HIGH>;
> + data-gpios = <&gpio ASPEED_GPIO(E, 7) GPIO_ACTIVE_HIGH>;
> + mux-gpios = <&gpio ASPEED_GPIO(E, 5) GPIO_ACTIVE_HIGH>;
> + enable-gpios = <&gpio ASPEED_GPIO(D, 0) GPIO_ACTIVE_HIGH>;
> + trans-gpios = <&gpio ASPEED_GPIO(R, 2) GPIO_ACTIVE_HIGH>;
> + };
> + iio-hwmon-12v {
> + compatible = "iio-hwmon";
> + io-channels = <&adc 0>;
> + };
> +
> + iio-hwmon-5v {
> + compatible = "iio-hwmon";
> + io-channels = <&adc 1>;
> + };
> +
> + iio-hwmon-3v {
> + compatible = "iio-hwmon";
> + io-channels = <&adc 2>;
> + };
> +
> + iio-hwmon-vdd0 {
> + compatible = "iio-hwmon";
> + io-channels = <&adc 3>;
> + };
> +
> + iio-hwmon-vdd1 {
> + compatible = "iio-hwmon";
> + io-channels = <&adc 4>;
> + };
> +
> + iio-hwmon-vcs0 {
> + compatible = "iio-hwmon";
> + io-channels = <&adc 5>;
> + };
> +
> + iio-hwmon-vcs1 {
> + compatible = "iio-hwmon";
> + io-channels = <&adc 6>;
> + };
> +
> + iio-hwmon-vdn0 {
> + compatible = "iio-hwmon";
> + io-channels = <&adc 7>;
> + };
> +
> + iio-hwmon-vdn1 {
> + compatible = "iio-hwmon";
> + io-channels = <&adc 8>;
> + };
> +
> + iio-hwmon-vio0 {
> + compatible = "iio-hwmon";
> + io-channels = <&adc 9>;
> + };
> +
> + iio-hwmon-vio1 {
> + compatible = "iio-hwmon";
> + io-channels = <&adc 10>;
> + };
> +
> + iio-hwmon-vddra {
> + compatible = "iio-hwmon";
> + io-channels = <&adc 11>;
> + };
> +
> + iio-hwmon-vddrb {
> + compatible = "iio-hwmon";
> + io-channels = <&adc 13>;
> + };
> +
> + iio-hwmon-vddrc {
> + compatible = "iio-hwmon";
> + io-channels = <&adc 14>;
> + };
> +
> + iio-hwmon-vddrd {
> + compatible = "iio-hwmon";
> + io-channels = <&adc 15>;
> + };
> +
> + iio-hwmon-battery {
> + compatible = "iio-hwmon";
> + io-channels = <&adc 12>;
> + };
> +};
> +
> +&pwm_tacho {
> + status = "okay";
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_pwm0_default &pinctrl_pwm1_default
> + &pinctrl_pwm2_default &pinctrl_pwm3_default
> + &pinctrl_pwm4_default &pinctrl_pwm5_default>;
> +
> + fan@0 {
> + reg = <0x00>;
> + aspeed,fan-tach-ch = /bits/ 8 <0x00>;
> + };
> +
> + fan@1 {
> + reg = <0x01>;
> + aspeed,fan-tach-ch = /bits/ 8 <0x01>;
> + };
> +
> + fan@2 {
> + reg = <0x02>;
> + aspeed,fan-tach-ch = /bits/ 8 <0x02>;
> + };
> +
> + fan@3 {
> + reg = <0x03>;
> + aspeed,fan-tach-ch = /bits/ 8 <0x03>;
> + };
> +
> + fan@4 {
> + reg = <0x04>;
> + aspeed,fan-tach-ch = /bits/ 8 <0x04>;
> + };
> +
> + fan@5 {
> + reg = <0x05>;
> + aspeed,fan-tach-ch = /bits/ 8 <0x05>;
> + };
> +
> + fan@6 {
> + reg = <0x00>;
> + aspeed,fan-tach-ch = /bits/ 8 <0x06>;
> + };
> +
> + fan@7 {
> + reg = <0x01>;
> + aspeed,fan-tach-ch = /bits/ 8 <0x07>;
> + };
> +
> + fan@8 {
> + reg = <0x02>;
> + aspeed,fan-tach-ch = /bits/ 8 <0x08>;
> + };
> +
> + fan@9 {
> + reg = <0x03>;
> + aspeed,fan-tach-ch = /bits/ 8 <0x09>;
> + };
> +
> + fan@10 {
> + reg = <0x04>;
> + aspeed,fan-tach-ch = /bits/ 8 <0x0a>;
> + };
> +
> + fan@11 {
> + reg = <0x05>;
> + aspeed,fan-tach-ch = /bits/ 8 <0x0b>;
> + };
> +};
> +
> +&fmc {
> + status = "okay";
> + flash@0 {
> + status = "okay";
> + label = "bmc";
> + m25p,fast-read;
> + spi-max-frequency = <50000000>;
> + partitions {
> + #address-cells = < 1 >;
> + #size-cells = < 1 >;
> + compatible = "fixed-partitions";
> + u-boot@0 {
> + reg = < 0 0x60000 >;
> + label = "u-boot";
> + };
> + u-boot-env@60000 {
> + reg = < 0x60000 0x20000 >;
> + label = "u-boot-env";
> + };
> + obmc-ubi@80000 {
> + reg = < 0x80000 0x1F80000 >;
> + label = "obmc-ubi";
> + };
> + };
> + };
> + flash@1 {
> + status = "okay";
> + label = "alt-bmc";
> + m25p,fast-read;
> + spi-max-frequency = <50000000>;
> + partitions {
> + #address-cells = < 1 >;
> + #size-cells = < 1 >;
> + compatible = "fixed-partitions";
> + u-boot@0 {
> + reg = < 0 0x60000 >;
> + label = "alt-u-boot";
> + };
> + u-boot-env@60000 {
> + reg = < 0x60000 0x20000 >;
> + label = "alt-u-boot-env";
> + };
> + obmc-ubi@80000 {
> + reg = < 0x80000 0x1F80000 >;
> + label = "alt-obmc-ubi";
> + };
> + };
> + };
> +};
> +
> +&spi1 {
> + status = "okay";
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_spi1_default>;
> +
> + flash@0 {
> + status = "okay";
> + label = "pnor";
> + m25p,fast-read;
> + spi-max-frequency = <100000000>;
> + };
> +};
> +
> +&lpc_ctrl {
> + status = "okay";
> + memory-region = <&flash_memory>;
> + flash = <&spi1>;
> +};
> +
> +&uart1 {
> + /* Rear RS-232 connector */
> + status = "okay";
> +
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_txd1_default
> + &pinctrl_rxd1_default
> + &pinctrl_nrts1_default
> + &pinctrl_ndtr1_default
> + &pinctrl_ndsr1_default
> + &pinctrl_ncts1_default
> + &pinctrl_ndcd1_default
> + &pinctrl_nri1_default>;
> +};
> +
> +&uart2 {
> + /* APSS */
> + status = "okay";
> +
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_txd2_default &pinctrl_rxd2_default>;
> +};
> +
> +&uart5 {
> + status = "okay";
> +};
> +
> +&mac0 {
> + status = "okay";
> +
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_rmii1_default>;
> + use-ncsi;
> +};
> +
> +&mac1 {
> + status = "okay";
> +
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_rgmii2_default &pinctrl_mdio2_default>;
> +};
> +
> +&i2c0 {
> + status = "disabled";
> +};
> +
> +&i2c1 {
> + status = "disabled";
> +};
> +
> +&i2c2 {
> + status = "okay";
> +
> + /* SAMTEC P0 */
> + /* SAMTEC P1 */
> +
> +};
> +
> +&i2c3 {
> + status = "okay";
> +
> + /* APSS */
> + /* CPLD */
> +
> + /* PCA9516 (repeater) ->
> + * CLK Buffer 9FGS9092
> + * CLK Buffer 9DBL0651BKILFT
> + * CLK Buffer 9DBL0651BKILFT
> + * Power Supply 0
> + * Power Supply 1
> + * PCA 9552 LED
> + */
> +
> + power-supply@58 {
> + compatible = "ibm,cffps1";
> + reg = <0x58>;
> + };
> +
> + power-supply@5b {
> + compatible = "ibm,cffps1";
> + reg = <0x5b>;
> + };
> +
> + pca9552: pca9552@60 {
> + compatible = "nxp,pca9552";
> + reg = <0x60>;
> + #address-cells = <1>;
> + #size-cells = <0>;
> + gpio-controller;
> + #gpio-cells = <2>;
> +
> + gpio@0 {
> + reg = <0>;
> + type = <PCA955X_TYPE_GPIO>;
> + };
> + gpio@1 {
> + reg = <1>;
> + type = <PCA955X_TYPE_GPIO>;
> + };
> + gpio@2 {
> + reg = <2>;
> + type = <PCA955X_TYPE_GPIO>;
> + };
> + gpio@3 {
> + reg = <3>;
> + type = <PCA955X_TYPE_GPIO>;
> + };
> + gpio@4 {
> + reg = <4>;
> + type = <PCA955X_TYPE_GPIO>;
> + };
> + gpio@5 {
> + reg = <5>;
> + type = <PCA955X_TYPE_GPIO>;
> + };
> + gpio@6 {
> + reg = <6>;
> + type = <PCA955X_TYPE_GPIO>;
> + };
> + gpio@7 {
> + reg = <7>;
> + type = <PCA955X_TYPE_GPIO>;
> + };
> + gpio@8 {
> + reg = <8>;
> + type = <PCA955X_TYPE_GPIO>;
> + };
> + gpio@9 {
> + reg = <9>;
> + type = <PCA955X_TYPE_GPIO>;
> + };
> + gpio@10 {
> + reg = <10>;
> + type = <PCA955X_TYPE_GPIO>;
> + };
> + gpio@11 {
> + reg = <11>;
> + type = <PCA955X_TYPE_GPIO>;
> + };
> + gpio@12 {
> + reg = <12>;
> + type = <PCA955X_TYPE_GPIO>;
> + };
> + gpio@13 {
> + reg = <13>;
> + type = <PCA955X_TYPE_GPIO>;
> + };
> + gpio@14 {
> + reg = <14>;
> + type = <PCA955X_TYPE_GPIO>;
> + };
> + gpio@15 {
> + reg = <15>;
> + type = <PCA955X_TYPE_GPIO>;
> + };
> +
> + };
> +
> +};
> +
> +&i2c4 {
> + status = "okay";
> +
> + /* CP0 VDD & VCS : IR35221 */
> + /* CP0 VDN : IR35221 */
> + /* CP0 VIO : IR38064 */
> + /* CP0 VDDR : PXM1330 */
> +
> + ir35221@70 {
> + compatible = "infineon,ir35221";
> + reg = <0x70>;
> + };
> +
> + ir35221@72 {
> + compatible = "infineon,ir35221";
> + reg = <0x72>;
> + };
> +
> +};
> +
> +&i2c5 {
> + status = "okay";
> +
> + /* CP0 VDD & VCS : IR35221 */
> + /* CP0 VDN : IR35221 */
> + /* CP0 VIO : IR38064 */
> + /* CP0 VDDR : PXM1330 */
> +
> + ir35221@70 {
> + compatible = "infineon,ir35221";
> + reg = <0x70>;
> + };
> +
> + ir35221@72 {
> + compatible = "infineon,ir35221";
> + reg = <0x72>;
> + };
> +
> +};
> +
> +&i2c6 {
> + status = "okay";
> +
> + /* pca9548 -> NVMe1 to 8 */
> +
> + pca9548@70 {
> + compatible = "nxp,pca9548";
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <0x70>;
> + };
> +
> +};
> +
> +&i2c7 {
> + status = "okay";
> +
> + /* pca9548 -> NVMe9 to 16 */
> +
> + pca9548@70 {
> + compatible = "nxp,pca9548";
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <0x70>;
> + };
> +
> +};
> +
> +&i2c8 {
> + status = "okay";
> +
> + eeprom@50 {
> + compatible = "atmel,24c64";
> + reg = <0x50>;
> + };
> +};
> +
> +&i2c9 {
> + status = "okay";
> +
> + /* pca9545 Riser ->
> + * PCIe x8 Slot3
> + * PCIe x16 slot4
> + * PCIe x8 slot5
> + * I2C BMC RISER PCA9554
> + * BMC SCL/SDA PCA9554
> + * PCA9554
> + */
> +
> + /* pca9545 ->
> + * PCIe x16 Slot1
> + * PCIe x8 slot2
> + * PEX8748
> + */
> +
> + pca9545riser@70 {
> + compatible = "nxp,pca9545";
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <0x70>;
> +
> + i2c-mux-idle-disconnect;
> + interrupt-controller;
> + #interrupt-cells = <2>;
> + };
> +
> + pca9545@71 {
> + compatible = "nxp,pca9545";
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <0x71>;
> +
> + i2c-mux-idle-disconnect;
> + interrupt-controller;
> + #interrupt-cells = <2>;
> + };
> +};
> +
> +&i2c10 {
> + status = "okay";
> +
> + /* pca9545 Riser ->
> + * PCIe x8 Slot8
> + * PCIe x16 slot9
> + * PCIe x8 slot10
> + * I2C BMC RISER PCA9554
> + * BMC SCL/SDA PCA9554
> + * PCA9554
> + */
> +
> + /* pca9545 ->
> + * PCIe x16 Slot1
> + * PCIe x8 slot2
> + * PEX8748
> + */
> +
> + pca9545riser@70 {
> + compatible = "nxp,pca9545";
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <0x70>;
> +
> + i2c-mux-idle-disconnect;
> + interrupt-controller;
> + #interrupt-cells = <2>;
> + };
> +
> + pca9545@71 {
> + compatible = "nxp,pca9545";
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <0x71>;
> +
> + i2c-mux-idle-disconnect;
> + interrupt-controller;
> + #interrupt-cells = <2>;
> + };
> +};
> +
> +&i2c11 {
> + status = "okay";
> +
> + /* TPM */
> + /* RTC RX8900CE */
> + /* FPGA for power sequence */
> + /* TMP275A */
> + /* TMP275A */
> + /* EMC1462 */
> +
> + tpm@57 {
> + compatible = "infineon,slb9645tt";
> + reg = <0x57>;
> + };
> +
> + rtc@32 {
> + compatible = "epson,rx8900";
> + reg = <0x32>;
> + };
> +
> + tmp275@48 {
> + compatible = "ti,tmp275";
> + reg = <0x48>;
> + };
> +
> + tmp275@49 {
> + compatible = "ti,tmp275";
> + reg = <0x49>;
> + };
> +
> + /* chip emc1462 use emc1403 driver */
> + emc1403@4c {
> + compatible = "smsc,emc1403";
> + reg = <0x4c>;
> + };
> +
> +};
> +
> +&i2c12 {
> + status = "okay";
> +
> + /* pca9545 ->
> + * SAS BP1
> + * SAS BP2
> + * NVMe BP
> + * M.2 riser
> + */
> +
> + pca9545@70 {
> + compatible = "nxp,pca9545";
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <0x70>;
> +
> + interrupt-controller;
> + #interrupt-cells = <2>;
> +
> + i2c@0 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <0>;
> +
> + eeprom@50 {
> + compatible = "atmel,24c64";
> + reg = <0x50>;
> + };
> + };
> +
> + i2c@1 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <1>;
> +
> + eeprom@50 {
> + compatible = "atmel,24c64";
> + reg = <0x50>;
> + };
> + };
> +
> + i2c@2 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <2>;
> +
> + eeprom@50 {
> + compatible = "atmel,24c64";
> + reg = <0x50>;
> + };
> + };
> +
> + i2c@3 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <3>;
> +
> + tmp275@48 {
> + compatible = "ti,tmp275";
> + reg = <0x48>;
> + };
> + };
> +
> + };
> +
> +};
> +
> +&i2c13 {
> + status = "okay";
> +
> + /* pca9548 ->
> + * NVMe BP
> + * NVMe HDD17 to 24
> + */
> +
> + pca9548@70 {
> + compatible = "nxp,pca9548";
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <0x70>;
> + };
> +};
> +
> +&vuart {
> + status = "okay";
> +};
> +
> +&gfx {
> + status = "okay";
> + memory-region = <&gfx_memory>;
> +};
> +
> +&adc {
> + /* ADC pin default is ADC*/

Yes, the pinmux state defaults to ADC. However, by explicitly specifying
the mux state here you can take advantage of pinctrl's exclusive access
constraints - i.e. attempts to mux the pins for other purposes will be
rejected. Without declaring the mux configuration here it opens the
door for bugs in userspace to creep in, e.g. exporting some of the ADC
pins as GPIO. Root-causing this mismatch is more difficult than your
userspace applications receiving an explicit error.

As such, I strongly recommend you are explicit about the mux
configuration here.

Andrew

> + status = "okay";
> +};
> +
> +&wdt1 {
> + aspeed,reset-type = "none";
> + aspeed,external-signal;
> + aspeed,ext-push-pull;
> + aspeed,ext-active-high;
> +
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_wdtrst1_default>;
> +};
> +
> +&wdt2 {
> + aspeed,alt-boot;
> +};
> +
> +&ibt {
> + status = "okay";
> +};
> +
> +&vhub {
> + status = "okay";
> +};
> +
> +&video {
> + status = "okay";
> + memory-region = <&video_engine_memory>;
> +};
> +
> +#include "ibm-power9-dual.dtsi"
> +
> --
> 2.17.1
>
>
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