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Date: Wed, 11 Oct 2023 12:22:26 +1030
From: Joel Stanley <joel@....id.au>
To: Chanh Nguyen <chanh@...amperecomputing.com>
Cc: OpenBMC Maillist <openbmc@...ts.ozlabs.org>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Conor Dooley <conor+dt@...nel.org>,
Andrew Jeffery <andrew@...id.au>, devicetree@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org,
linux-aspeed@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 7/7] ARM: dts: aspeed: mtmitchell: Add I2C NVMe alias port
On Thu, 5 Oct 2023 at 14:26, Chanh Nguyen <chanh@...amperecomputing.com> wrote:
>
> Adds the I2C alias ports to each NVMe drive via the
> backplane card.
>
> Besides that, it also adds the eeprom and temperature sensor
> on the backplane card.
>
> Signed-off-by: Chanh Nguyen <chanh@...amperecomputing.com>
Reviewed-by: Joel Stanley <joel@....id.au>
> ---
> .../aspeed/aspeed-bmc-ampere-mtmitchell.dts | 267 ++++++++++++++++++
> 1 file changed, 267 insertions(+)
>
> diff --git a/arch/arm/boot/dts/aspeed/aspeed-bmc-ampere-mtmitchell.dts b/arch/arm/boot/dts/aspeed/aspeed-bmc-ampere-mtmitchell.dts
> index eb8d5e367276..1f70e3e4e83b 100644
> --- a/arch/arm/boot/dts/aspeed/aspeed-bmc-ampere-mtmitchell.dts
> +++ b/arch/arm/boot/dts/aspeed/aspeed-bmc-ampere-mtmitchell.dts
> @@ -14,6 +14,42 @@
> aliases {
> serial7 = &uart8;
> serial8 = &uart9;
> +
> + /*
> + * I2C NVMe alias port
> + */
> + i2c100 = &backplane_0;
> + i2c48 = &nvmeslot_0;
> + i2c49 = &nvmeslot_1;
> + i2c50 = &nvmeslot_2;
> + i2c51 = &nvmeslot_3;
> + i2c52 = &nvmeslot_4;
> + i2c53 = &nvmeslot_5;
> + i2c54 = &nvmeslot_6;
> + i2c55 = &nvmeslot_7;
> +
> + i2c101 = &backplane_1;
> + i2c56 = &nvmeslot_8;
> + i2c57 = &nvmeslot_9;
> + i2c58 = &nvmeslot_10;
> + i2c59 = &nvmeslot_11;
> + i2c60 = &nvmeslot_12;
> + i2c61 = &nvmeslot_13;
> + i2c62 = &nvmeslot_14;
> + i2c63 = &nvmeslot_15;
> +
> + i2c102 = &backplane_2;
> + i2c64 = &nvmeslot_16;
> + i2c65 = &nvmeslot_17;
> + i2c66 = &nvmeslot_18;
> + i2c67 = &nvmeslot_19;
> + i2c68 = &nvmeslot_20;
> + i2c69 = &nvmeslot_21;
> + i2c70 = &nvmeslot_22;
> + i2c71 = &nvmeslot_23;
> +
> + i2c80 = &nvme_m2_0;
> + i2c81 = &nvme_m2_1;
> };
>
> chosen {
> @@ -534,6 +570,237 @@
>
> &i2c9 {
> status = "okay";
> + i2c-mux@70 {
> + compatible = "nxp,pca9548";
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <0x70>;
> + i2c-mux-idle-disconnect;
> +
> + backplane_1: i2c@0 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <0x0>;
> +
> + eeprom@50 {
> + compatible = "atmel,24c64";
> + reg = <0x50>;
> + pagesize = <32>;
> + };
> +
> + i2c-mux@71 {
> + compatible = "nxp,pca9548";
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <0x71>;
> + i2c-mux-idle-disconnect;
> +
> + nvmeslot_8: i2c@0 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <0x0>;
> + };
> + nvmeslot_9: i2c@1 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <0x1>;
> + };
> + nvmeslot_10: i2c@2 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <0x2>;
> + };
> + nvmeslot_11: i2c@3 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <0x3>;
> + };
> + nvmeslot_12: i2c@4 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <0x4>;
> + };
> + nvmeslot_13: i2c@5 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <0x5>;
> + };
> + nvmeslot_14: i2c@6 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <0x6>;
> + };
> + nvmeslot_15: i2c@7 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <0x7>;
> + };
> + };
> +
> + tmp432@4c {
> + compatible = "ti,tmp75";
> + reg = <0x4c>;
> + };
> + };
> +
> + backplane_2: i2c@2 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <0x2>;
> +
> + eeprom@50 {
> + compatible = "atmel,24c64";
> + reg = <0x50>;
> + pagesize = <32>;
> + };
> +
> + i2c-mux@71 {
> + compatible = "nxp,pca9548";
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <0x71>;
> + i2c-mux-idle-disconnect;
> +
> + nvmeslot_16: i2c@0 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <0x0>;
> + };
> + nvmeslot_17: i2c@1 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <0x1>;
> + };
> + nvmeslot_18: i2c@2 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <0x2>;
> + };
> + nvmeslot_19: i2c@3 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <0x3>;
> + };
> + nvmeslot_20: i2c@4 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <0x4>;
> + };
> + nvmeslot_21: i2c@5 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <0x5>;
> + };
> + nvmeslot_22: i2c@6 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <0x6>;
> + };
> + nvmeslot_23: i2c@7 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <0x7>;
> + };
> + };
> +
> + tmp432@4c {
> + compatible = "ti,tmp75";
> + reg = <0x4c>;
> + };
> + };
> +
> + backplane_0: i2c@4 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <0x4>;
> +
> + eeprom@50 {
> + compatible = "atmel,24c64";
> + reg = <0x50>;
> + pagesize = <32>;
> + };
> +
> + i2c-mux@71 {
> + compatible = "nxp,pca9548";
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <0x71>;
> + i2c-mux-idle-disconnect;
> +
> + nvmeslot_0: i2c@0 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <0x0>;
> + };
> + nvmeslot_1: i2c@1 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <0x1>;
> + };
> + nvmeslot_2: i2c@2 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <0x2>;
> + };
> + nvmeslot_3: i2c@3 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <0x3>;
> + };
> + nvmeslot_4: i2c@4 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <0x4>;
> + };
> + nvmeslot_5: i2c@5 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <0x5>;
> + };
> + nvmeslot_6: i2c@6 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <0x6>;
> + };
> + nvmeslot_7: i2c@7 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <0x7>;
> + };
> + };
> +
> + tmp432@4c {
> + compatible = "ti,tmp75";
> + reg = <0x4c>;
> + };
> + };
> +
> + i2c@7 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <0x7>;
> +
> + i2c-mux@71 {
> + compatible = "nxp,pca9546";
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <0x71>;
> + i2c-mux-idle-disconnect;
> +
> + nvme_m2_0: i2c@0 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <0x0>;
> + };
> +
> + nvme_m2_1: i2c@1 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <0x1>;
> + };
> + };
> + };
> + };
> };
>
> &i2c11 {
> --
> 2.17.1
>
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