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Message-ID: <3e242c03-f8fd-2136-0263-2306acb9f610@linaro.org>
Date:   Thu, 19 Jan 2023 12:00:40 +0100
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Subject: Re: [PATCH 3/3] ARM: dts: aspeed: Add device tree for Ufispace
 NCPLite BMC
Content-Language: en-US
To:     Jordan Chang <jordan.chang@ufispace.com>,
        linux-arm-kernel@lists.infradead.org,
        linux-aspeed@lists.ozlabs.org, linux-kernel@vger.kernel.org,
        krzysztof.kozlowski+dt@linaro.org, joel@jms.id.au, andrew@aj.id.au,
        robh+dt@kernel.org
Cc:     jay.tc.lin@ufispace.com, eason.ys.huang@ufispace.com
References: <20230119102102.73414-1-jordan.chang@ufispace.com>
 <20230119102102.73414-4-jordan.chang@ufispace.com>
From:   Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
In-Reply-To: <20230119102102.73414-4-jordan.chang@ufispace.com>
Content-Type: text/plain; charset=UTF-8
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Precedence: bulk

On 19/01/2023 11:21, Jordan Chang wrote:
> Add initial version of device tree for Ufispace NCPlite platform
> which is equipped with AST2600-based BMC.
> 
> Signed-off-by: Jordan Chang <jordan.chang@ufispace.com>
> ---
>  arch/arm/boot/dts/Makefile                    |   1 +
>  .../boot/dts/aspeed-bmc-ufispace-ncplite.dts  | 360 ++++++++++++++++++
>  2 files changed, 361 insertions(+)
>  create mode 100644 arch/arm/boot/dts/aspeed-bmc-ufispace-ncplite.dts
> 
> diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
> index 2ee9c043218b..d26e0651e805 100644
> --- a/arch/arm/boot/dts/Makefile
> +++ b/arch/arm/boot/dts/Makefile
> @@ -1626,6 +1626,7 @@ dtb-$(CONFIG_ARCH_ASPEED) += \
>  	aspeed-bmc-inventec-transformers.dtb \
>  	aspeed-bmc-tyan-s7106.dtb \
>  	aspeed-bmc-tyan-s8036.dtb \
> +	aspeed-bmc-ufispace-ncplite.dtb \
>  	aspeed-bmc-vegman-n110.dtb \
>  	aspeed-bmc-vegman-rx20.dtb \
>  	aspeed-bmc-vegman-sx20.dtb
> diff --git a/arch/arm/boot/dts/aspeed-bmc-ufispace-ncplite.dts b/arch/arm/boot/dts/aspeed-bmc-ufispace-ncplite.dts
> new file mode 100644
> index 000000000000..7ab29129d1e4
> --- /dev/null
> +++ b/arch/arm/boot/dts/aspeed-bmc-ufispace-ncplite.dts
> @@ -0,0 +1,360 @@
> +// SPDX-License-Identifier: GPL-2.0-or-later
> +// Copyright (c) 2022 Ufispace Co., Ltd.
> +/dts-v1/;
> +
> +#include "aspeed-g6.dtsi"
> +#include <dt-bindings/i2c/i2c.h>
> +#include <dt-bindings/gpio/aspeed-gpio.h>
> +
> +/ {
> +	model = "Ufispace NCPLite BMC";
> +	compatible = "ufispace,ncplite-bmc", "aspeed,ast2600";
> +
> +	aliases {
> +		serial4 = &uart5;
> +	};
> +
> +	chosen {
> +		stdout-path = &uart5;
> +		bootargs = "console=ttyS4,115200n8 earlycon";

earlycon is debugging tool and not suitable for mainline, wide usage. Drop.

Actually drop entire bootags and use proper stdout-path.

> +	};
> +
> +	memory@80000000 {
> +		device_type = "memory";
> +		reg = <0x80000000 0x80000000>;
> +	};
> +
> +	iio-hwmon {
> +		compatible = "iio-hwmon";
> +		io-channels = <&adc0 0>, <&adc0 1>, <&adc0 2>, <&adc0 3>,
> +			      <&adc0 4>, <&adc0 5>, <&adc0 6>, <&adc0 7>,
> +			      <&adc1 0>, <&adc1 1>, <&adc1 2>, <&adc1 3>,
> +			      <&adc1 4>, <&adc1 5>, <&adc1 6>, <&adc1 7>;
> +	};
> +
> +	gpio-keys {
> +		compatible = "gpio-keys";
> +
> +		fan-status-int-l {

Does not look like you tested the DTS against bindings. Please run `make
dtbs_check` (see Documentation/devicetree/bindings/writing-schema.rst
for instructions).

These will bring warnings. Missing generic name,

> +			label = "fan-status-int-l";
> +			gpios = <&gpio0 ASPEED_GPIO(M, 2) GPIO_ACTIVE_LOW>;
> +			linux,code = <ASPEED_GPIO(M, 2)>;
> +		};
> +
> +		allpwr-good {
> +			label = "allpwr-good";
> +			gpios = <&gpio0 ASPEED_GPIO(V, 4) GPIO_ACTIVE_HIGH>;
> +			linux,code = <ASPEED_GPIO(V, 4)>;
> +		};
> +
> +		psu0-alert-n {
> +			label = "psu0-alert-n";
> +			gpios = <&gpio0 ASPEED_GPIO(V, 1) GPIO_ACTIVE_LOW>;
> +			linux,code = <ASPEED_GPIO(V, 1)>;
> +		};
> +
> +		psu1-alert-n {
> +			label = "psu1-alert-n";
> +			gpios = <&gpio0 ASPEED_GPIO(V, 2) GPIO_ACTIVE_LOW>;
> +			linux,code = <ASPEED_GPIO(V, 2)>;
> +		};
> +
> +		int-thermal-alert {
> +			label = "int-thermal-alert";
> +			gpios = <&gpio0 ASPEED_GPIO(P, 2) GPIO_ACTIVE_LOW>;
> +			linux,code = <ASPEED_GPIO(P, 2)>;
> +		};
> +
> +		cpu-caterr-l {
> +			label = "cpu-caterr-l";
> +			gpios = <&gpio0 ASPEED_GPIO(N, 3) GPIO_ACTIVE_LOW>;
> +			linux,code = <ASPEED_GPIO(N, 3)>;
> +		};
> +
> +		cpu-thermtrip-l {
> +			label = "cpu-thermtrip-l";
> +			gpios = <&gpio0 ASPEED_GPIO(V, 5) GPIO_ACTIVE_LOW>;
> +			linux,code = <ASPEED_GPIO(V, 5)>;
> +		};
> +
> +		psu0-presence-l {
> +			label = "psu0-presence-l";
> +			gpios = <&gpio0 ASPEED_GPIO(F, 6) GPIO_ACTIVE_LOW>;
> +			linux,code = <ASPEED_GPIO(F, 6)>;
> +		};
> +
> +		psu1-presence-l {
> +			label = "psu1-presence-l";
> +			gpios = <&gpio0 ASPEED_GPIO(F, 7) GPIO_ACTIVE_LOW>;
> +			linux,code = <ASPEED_GPIO(F, 7)>;
> +		};
> +
> +		psu0-power-ok {
> +			label = "psu0-power-ok";
> +			gpios = <&gpio0 ASPEED_GPIO(M, 4) GPIO_ACTIVE_HIGH>;
> +			linux,code = <ASPEED_GPIO(M, 4)>;
> +		};
> +
> +		psu1-power-ok {
> +			label = "psu1-power-ok";
> +			gpios = <&gpio0 ASPEED_GPIO(M, 5) GPIO_ACTIVE_HIGH>;
> +			linux,code = <ASPEED_GPIO(M, 5)>;
> +		};
> +	};
> +
> +	gpio-keys-polled {
> +		compatible = "gpio-keys-polled";
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +		poll-interval = <1000>;
> +
> +		fan0-presence {

Same problem - not tested.

> +			label = "fan0-presence";
> +			gpios = <&fan_ioexp 2 GPIO_ACTIVE_LOW>;
> +			linux,code = <2>;
> +		};
> +
> +		fan1-presence {
> +			label = "fan1-presence";
> +			gpios = <&fan_ioexp 6 GPIO_ACTIVE_LOW>;
> +			linux,code = <6>;
> +		};
> +
> +		fan2-presence {
> +			label = "fan2-presence";
> +			gpios = <&fan_ioexp 10 GPIO_ACTIVE_LOW>;
> +			linux,code = <10>;
> +		};
> +
> +		fan3-presence {
> +			label = "fan3-presence";
> +			gpios = <&fan_ioexp 14 GPIO_ACTIVE_LOW>;
> +			linux,code = <14>;
> +		};
> +	};
> +};
> +
> +&mac2 {
> +	status = "okay";
> +	use-ncsi;
> +
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&pinctrl_rmii3_default>;
> +	clocks = <&syscon ASPEED_CLK_GATE_MAC3CLK>,
> +		 <&syscon ASPEED_CLK_MAC3RCLK>;
> +	clock-names = "MACCLK", "RCLK";
> +};
> +
> +&fmc {
> +	status = "okay";
> +	flash@0 {
> +		status = "okay";
> +		m25p,fast-read;
> +		label = "bmc";
> +		spi-max-frequency = <50000000>;
> +#include "openbmc-flash-layout-64.dtsi"
> +	};
> +
> +	flash@1 {
> +		status = "okay";
> +		m25p,fast-read;
> +		label = "alt-bmc";
> +		spi-max-frequency = <50000000>;
> +#include "openbmc-flash-layout-64-alt.dtsi"
> +	};
> +};
> +
> +&uart1 {
> +	status = "okay";
> +};
> +
> +&uart4 {
> +	status = "okay";
> +};
> +
> +&uart5 {
> +	status = "okay";
> +};
> +
> +&kcs3 {
> +	status = "okay";
> +	aspeed,lpc-io-reg = <0xca2>;
> +};
> +
> +&lpc_reset {
> +	status = "okay";
> +};
> +
> +&lpc_ctrl {
> +	status = "okay";
> +};
> +
> +&uart_routing {
> +	status = "okay";
> +};
> +
> +&wdt1 {
> +	status = "okay";
> +};
> +
> +&wdt2 {
> +	status = "okay";
> +};
> +
> +&peci0 {
> +	status = "okay";
> +};
> +
> +&udc {
> +	status = "okay";
> +};
> +
> +&adc0 {
> +	vref = <2500>;
> +	status = "okay";
> +
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&pinctrl_adc0_default &pinctrl_adc1_default
> +		&pinctrl_adc2_default &pinctrl_adc3_default
> +		&pinctrl_adc4_default &pinctrl_adc5_default
> +		&pinctrl_adc6_default &pinctrl_adc7_default>;
> +};
> +
> +&adc1 {
> +	vref = <2500>;
> +	status = "okay";
> +
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&pinctrl_adc8_default &pinctrl_adc9_default
> +		&pinctrl_adc10_default &pinctrl_adc11_default
> +		&pinctrl_adc12_default &pinctrl_adc13_default
> +		&pinctrl_adc14_default &pinctrl_adc15_default>;
> +};
> +
> +&i2c0 {
> +	status = "okay";
> +};
> +
> +&i2c1 {
> +	status = "okay";
> +
> +	lm75@48 {

Node names should be generic.
https://devicetree-specification.readthedocs.io/en/latest/chapter2-devicetree-basics.html#generic-names-recommendation

> +		compatible = "national,lm75";
> +		reg = <0x48>;
> +	};
> +
> +	lm75@49 {

Node names should be generic.
https://devicetree-specification.readthedocs.io/en/latest/chapter2-devicetree-basics.html#generic-names-recommendation

> +		compatible = "national,lm75";
> +		reg = <0x49>;
> +	};
> +
> +	lm86@4c {

and so on...

> +		compatible = "national,lm86";
> +		reg = <0x4c>;
> +	};
> +};
> +
> +&i2c2 {
> +	status = "okay";
> +
> +	lm75@4f {

as well

> +		cpmpatible = "national,lm75";
> +		reg = <0x4f>;
> +	};
> +
> +	fan_ioexp: pca9535@20 {

and here

> +		compatible = "nxp,pca9535";
> +		reg = <0x20>;
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +		gpio-controller;
> +		#gpio-cells = <2>;
> +
> +		gpio-line-names =
> +		"","","presence-fan0","",
> +		"","","presence-fan1","",
> +		"","","presence-fan2","",
> +		"","","presence-fan3","";
> +	};
> +};
> +
> +&i2c3 {
> +	status = "okay";
> +
> +	eeprom@50 {
> +		compatible = "atmel,24c128";
> +		reg = <0x50>;
> +		pagesize = <64>;
> +	};
> +};
> +
> +&i2c4 {
> +	status = "okay";
> +
> +	psu@58 {
> +		compatible = "pmbus";

Where is this compatible documented?

Did you run checkpatch? Did it pass without warnings?


> +		reg = <0x58>;
> +	};
> +
> +	eeprom@50 {
> +		compatible = "atmel,24c02";
> +		reg = <0x50>;
> +		pagesize = <1>;
> +	};
> +};
> +
> +&i2c5 {
> +	status = "okay";
> +
> +	psu@58 {
> +		compatible = "pmbus";
> +		reg = <0x58>;
> +	};
> +
> +	eeprom@50 {
> +		compatible = "atmel,24c02";
> +		reg = <0x50>;
> +		pagesize = <1>;
> +	};
> +};
> +
> +&i2c8 {
> +	status = "okay";
> +};
> +
> +&i2c10 {
> +	status = "okay";
> +
> +	lm75@4d {

Node names should be generic.
https://devicetree-specification.readthedocs.io/en/latest/chapter2-devicetree-basics.html#generic-names-recommendation

> +		compatible = "national,lm75";
> +		reg = <0x4d>;
> +	};
> +};
Best regards,
Krzysztof