Re: [PATCH v3] ARM: dts: aspeed: Adding Facebook Yosemite V2 BMC

Vijay Khemka
2019-11-26T18:13:17Z

﻿On 11/26/19, 5:38 AM, "Manikandan" <manikandan.hcl.ers.epl@gmail.com> wrote:

On Mon, Nov 25, 2019 at 07:23:32PM +0000, Vijay Khemka wrote:
>
> On 11/25/19, 5:04 AM, "manikandan-e" <manikandan.hcl.ers.epl@gmail.com> wrote:
>
> The Yosemite V2 is a facebook multi-node server
> platform that host four OCP server. The BMC
> in the Yosemite V2 platorm based on AST2500 SoC.
>
> This patch adds linux device tree entry related to
> Yosemite V2 specific devices connected to BMC SoC.
> Nit: comments inline. Otherwise
> Reviewed-by: Vijay Khemka <vijaykhemka@fb.com>
>
>
> Signed-off-by: manikandan-e <manikandan.hcl.ers.epl@gmail.com>
> ---
> .../boot/dts/aspeed-bmc-facebook-yosemitev2.dts | 151 +++++++++++++++++++++
> 1 file changed, 151 insertions(+)
> create mode 100644 arch/arm/boot/dts/aspeed-bmc-facebook-yosemitev2.dts
>
> diff --git a/arch/arm/boot/dts/aspeed-bmc-facebook-yosemitev2.dts b/arch/arm/boot/dts/aspeed-bmc-facebook-yosemitev2.dts
> new file mode 100644
> index 0000000..09bffcd
> --- /dev/null
> +++ b/arch/arm/boot/dts/aspeed-bmc-facebook-yosemitev2.dts
> @@ -0,0 +1,151 @@
> +// SPDX-License-Identifier: GPL-2.0+
> +// Copyright (c) 2018 Facebook Inc.
> +/dts-v1/;
> +
> +#include "aspeed-g5.dtsi"
> +#include <dt-bindings/gpio/aspeed-gpio.h>
> +
> +/ {
> + model = "Facebook Yosemitev2 BMC";
> + compatible = "facebook,yosemitev2-bmc", "aspeed,ast2500";
> + aliases {
> + serial4 = &uart5;
> + };
> + chosen {
> + stdout-path = &uart5;
> + bootargs = "console=ttyS4,115200 earlyprintk";
> bootargs are not required as it is overwritten by uboot. And baud rate is 57600

As of now SPL and U-boot Baudrate based 115200 baudrate. Do we need to change it there. I understand that we can use SERIAL_CONSOLES in meta-facebook.
Do i need to remove 'console=ttyS4.115200' or complete bootargs . If we remove bootargs, how can add any bootargs params in future.
Bootargs are overwritten by u-boot and have no impact whatever you choose here. So you can remove bootargs.

> + };
> +
> + memory@80000000 {
> + reg = <0x80000000 0x20000000>;
> + };
> +
> + iio-hwmon {
> + // VOLATAGE SENSOR
> + 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> , <&adc 13> , <&adc 14> , <&adc 15> ;
> + };
> +};
> +
> +&fmc {
> + status = "okay";
> + flash@0 {
> + status = "okay";
> + m25p,fast-read;
> +#include "openbmc-flash-layout.dtsi"
> + };
> +};
> +
> +&spi1 {
> + status = "okay";
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_spi1_default>;
> + flash@0 {
> + status = "okay";
> + m25p,fast-read;
> + label = "pnor";
> + };
> +};
> +
> +&uart5 {
> + // BMC Console
> + status = "okay";
> +};
> +
> +&mac0 {
> + status = "okay";
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_rmii1_default>;
> + use-ncsi;
> +};
> +
> +&adc {
> + status = "okay";
> + pinctrl-names = "default";
> Use tab for alignment

Checkpatch didn't shown any issue warning .As i checked in many dts file , format is same.
It will helpful if i get more clarification.
If you see in above line, spaces are being used instead of tab. This is only one
line where spaces are being used instead of tab.

> + 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
> + &pinctrl_adc8_default
> + &pinctrl_adc9_default
> + &pinctrl_adc10_default
> + &pinctrl_adc11_default
> + &pinctrl_adc12_default
> + &pinctrl_adc13_default
> + &pinctrl_adc14_default
> + &pinctrl_adc15_default>;
> +};
> +
> +&i2c8 {
> + status = "okay";
> + //FRU EEPROM
> + eeprom@51 {
> + compatible = "atmel,24c64";
> + reg = <0x51>;
> + pagesize = <32>;
> + };
> +};
> +
> +&i2c9 {
> + status = "okay";
> + tmp421@4e {
> + //INLET TEMP
> + compatible = "ti,tmp421";
> + reg = <0x4e>;
> + };
> + //OUTLET TEMP
> + tmp421@4f {
> + compatible = "ti,tmp421";
> + reg = <0x4f>;
> + };
> +};
> +
> +&i2c10 {
> + status = "okay";
> + //HSC
> + adm1278@40 {
> + compatible = "adi,adm1278";
> + reg = <0x40>;
> + };
> +};
> +
> +&i2c11 {
> + status = "okay";
> + //MEZZ_TEMP_SENSOR
> + tmp421@1f {
> + compatible = "ti,tmp421";
> + reg = <0x1f>;
> + };
> +};
> +
> +&i2c12 {
> + status = "okay";
> + //MEZZ_FRU
> + eeprom@51 {
> + compatible = "atmel,24c64";
> + reg = <0x51>;
> + pagesize = <32>;
> + };
> +};
> +
> +&pwm_tacho {
> + status = "okay";
> + //FSC
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_pwm0_default &pinctrl_pwm1_default>;
> + fan@0 {
> + reg = <0x00>;
> + aspeed,fan-tach-ch = /bits/ 8 <0x00>;
> + };
> + fan@1 {
> + reg = <0x01>;
> + aspeed,fan-tach-ch = /bits/ 8 <0x02>;
> + };
> +};
> --
> 2.7.4
>
>
>