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Date: Tue, 2 Jul 2024 12:47:09 +0200
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: George Liu <liuxiwei1013@...il.com>, linux-aspeed@...ts.ozlabs.org
Cc: devicetree@...r.kernel.org, openbmc@...ts.ozlabs.org,
linux-kernel@...r.kernel.org, robh+dt@...nel.org,
linux-arm-kernel@...ts.infradead.org, krzysztof.kozlowski+dt@...aro.org,
conor+dt@...nel.org, joel@....id.au, andrew@...econstruct.com.au
Subject: Re: [PATCH v1 3/3] ARM: dts: aspeed: Add IEISystems NF5280M7 BMC
machine
On 01/07/2024 12:52, George Liu wrote:
> The IEISystems NF5280M7 is an x86 platform server with an
> AST2600-based BMC.
> This dts file provides a basic configuration for its OpenBMC
> development.
>
...
> + i2c613 = &i2c6s1ch3;
> + i2c614 = &i2c6s1ch4;
> + i2c615 = &i2c6s1ch5;
> + i2c616 = &i2c6s1ch6;
> + i2c617 = &i2c6s1ch7;
> + i2c620 = &i2c6s2ch0;
> + i2c621 = &i2c6s2ch1;
> + i2c622 = &i2c6s2ch2;
> + i2c623 = &i2c6s2ch3;
> + i2c624 = &i2c6s2ch4;
> + i2c625 = &i2c6s2ch5;
> + i2c626 = &i2c6s2ch6;
> + i2c627 = &i2c6s2ch7;
> + };
> +
> + chosen {
> + stdout-path = &uart5;
> + bootargs = "console=ttyS4,115200n8 earlycon";
earlycon is debugging tool, not production, drop. This leads to totally
redundant bootargs, so drop it entirely.
> + };
> +
> + memory@...00000 {
> + device_type = "memory";
> + reg = <0x80000000 0x80000000>;
> + };
> +
...
> +&i2c2 {
> + status = "okay";
Missing blank line (everywhere)
> + pca9546@70{
Node names should be generic. See also an explanation and list of
examples (not exhaustive) in DT specification:
https://devicetree-specification.readthedocs.io/en/latest/chapter2-devicetree-basics.html#generic-names-recommendation
> + compatible = "nxp,pca9546";
> + reg = <0x70>;
> + bus2_mux70_0: i2c@2{
> + reg = <0>;
> + tmp112@49{
Node names should be generic. See also an explanation and list of
examples (not exhaustive) in DT specification:
https://devicetree-specification.readthedocs.io/en/latest/chapter2-devicetree-basics.html#generic-names-recommendation
Everywhere: missing space before {
> + compatible = "ti,tmp112";
> + reg = <0x49>;
> + label = "Inlet_Temp";
> + };
Missing blank line
> + emc1413@4c{
Node names should be generic. See also an explanation and list of
examples (not exhaustive) in DT specification:
https://devicetree-specification.readthedocs.io/en/latest/chapter2-devicetree-basics.html#generic-names-recommendation
> + compatible = "microchip,emc1413";
> + reg = <0x4c>;
> + label = "Outlet_Temp";
> + };
> + };
> + };
> +};
> +
> +&i2c4 {
> + multi-master;
> + status = "okay";
> + ipmb0@10 {
> + compatible = "ipmb-dev";
> + reg = <(0x10 | I2C_OWN_SLAVE_ADDRESS)>;
> + i2c-protocol;
> + };
> +};
> +
> +&i2c5 {
> + bus-frequency = <1000000>;
> + multi-master;
> + status = "okay";
> + pca9546@70{
Node names should be generic. See also an explanation and list of
examples (not exhaustive) in DT specification:
https://devicetree-specification.readthedocs.io/en/latest/chapter2-devicetree-basics.html#generic-names-recommendation
Above comment applies to multiple places.
> + compatible = "nxp,pca9546";
> + reg = <0x70>;
> + bus5_mux00: i2c@0 {
> + reg = <0>;
> + status = "okay";
Where is it disabled?
> + vrmp2888@76 {
Node names should be generic. See also an explanation and list of
examples (not exhaustive) in DT specification:
https://devicetree-specification.readthedocs.io/en/latest/chapter2-devicetree-basics.html#generic-names-recommendation
> + compatible = "mps,mp2888";
> + reg = <0x76>;
> + };
> + vrmp2888@72 {
> + compatible = "mps,mp2888";
> + reg = <0x72>;
> + };
> + vrmp2888@62{
> + compatible = "mps,mp2888";
> + reg = <0x62>;
> + };
> + };
> + bus5_mux01: i2c@1{
> + reg = <1>;
> + status = "okay";
Where is it disabled?
> + vrmp2888@76{
Node names should be generic. See also an explanation and list of
examples (not exhaustive) in DT specification:
https://devicetree-specification.readthedocs.io/en/latest/chapter2-devicetree-basics.html#generic-names-recommendation
> + compatible = "mps,mp2888";
> + reg = <0x76>;
> + };
> + vrmp2888@72 {
> + compatible = "mps,mp2888";
> + reg = <0x72>;
> + };
> + vrmp2888@62{
> + compatible = "mps,mp2888";
> + reg = <0x62>;
> + };
> + };
> + bus5_mux02: i2c@2{
> + reg = <2>;
> + };
> + bus5_mux03: i2c@3{
> + reg = <3>;
> + };
> + };
> +};
> +
> +&i2c6 {
> + multi-master;
> + status = "okay";
> +
> + i2c-switch@70 {
> + compatible = "nxp,pca9548";
> + reg = <0x70>;
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + i2c6s0ch0: i2c@0 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <0>;
> +
> + eeprom@50 {
> + compatible = "atmel,24c256";
> + reg = <0x50>;
> + };
> + pca9548@71 {
Node names should be generic. See also an explanation and list of
examples (not exhaustive) in DT specification:
https://devicetree-specification.readthedocs.io/en/latest/chapter2-devicetree-basics.html#generic-names-recommendation
> + compatible = "nxp,pca9548";
> + reg = <0x71>;
> + i2c-mux-idle-disconnect;
> +
> + i2c6s1ch0: i2c@0 {
> + };
> + };
> +};
> +
> +&i2c7 {
> + multi-master;
> + #retries = <3>;
> + status = "okay";
> +
> + adc128d818@1d {
Node names should be generic. See also an explanation and list of
examples (not exhaustive) in DT specification:
https://devicetree-specification.readthedocs.io/en/latest/chapter2-devicetree-basics.html#generic-names-recommendation
> + compatible = "ti,adc128d818";
> + reg = <0x1d>;
> + ti,mode = /bits/ 8 <0x01>;
> + };
Best regards,
Krzysztof
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