On Tue, 30 Mar 2021, at 10:53, Zev Weiss wrote:
> 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>;
> + };
> +};
You're hooking up the ADC lines to the iio-hwmon bridge...
> +
> +&adc {
> + status = "okay";
> +};
But you haven't requested the ADC lines from pinmux here.
It will *happen* to work as expected because ADC is the default mux
state for the pins, but by not requesting the lines you're leaving the
pins available for a conflicting request, which can be annoying to
debug.
> +
> +&kcs3 {
> + status = "okay";
> + aspeed,lpc-io-reg = <0xca2>;
> +};
Given you need KCS support, do you mind testing my KCS series?
https://lore.kernel.org/linux-arm-kernel/20210319062752.145730-1-andrew@xxxxxxxx/
The cover letter got detached, and is here:
https://lore.kernel.org/linux-arm-kernel/20210319061952.145040-1-andrew@xxxxxxxx/
Andrew
