linux-kernel - Re: [PATCH v2] ARM: dts: aspeed: mtmitchell: Enable NCSI

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Message-ID: <8033851a-6eaf-e4e7-5e80-0a1f7331c67a@amperemail.onmicrosoft.com>
Date:   Sun, 5 Mar 2023 22:58:57 +0700
From:   Chanh Nguyen <chanh@...eremail.onmicrosoft.com>
To:     Paul Menzel <pmenzel@...gen.mpg.de>,
        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>,
        Joel Stanley <joel@....id.au>,
        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 v2] ARM: dts: aspeed: mtmitchell: Enable NCSI



On 01/03/2023 14:51, Paul Menzel wrote:
> Dear Chanh,
> 
> 
> Thank you for the patch.
> 
> Am 28.02.23 um 11:28 schrieb Chanh Nguyen:
>> Support the mac3 (RGMII4) as an NC-SI stack instead of an MDIO PHY.
>>
>> The OCP slot #0 and OCP slot #1 use a common the BMC_NCSI signal,
> 
> *the* seems a leftover.

Thank Paul,
I'll remove it.

> 
>> so we use only one of them at the same time. The OCP slot #0 will
>> be enabled by PCA9539's setting by default.
>>
>> Also, enable the OCP Auxiliary Power during booting.
> 
> Is there a reason not to make this a separate commit?
> 
> 
> Kind regards,
> 
> Paul
> 

I wouldn't like to separate it.

This is "Enable NCSI" commit, so I would like to support all configs, 
that make NCSI feature works.

Thanks,
Chanh
> 
>> Signed-off-by: Chanh Nguyen <chanh@...amperecomputing.com>
>> ---
>> Changes in v2:
>>     - Change PCA9539APW node name.                     [Krzysztof]
>> ---
>>   .../boot/dts/aspeed-bmc-ampere-mtmitchell.dts | 37 ++++++++++++++++++-
>>   1 file changed, 36 insertions(+), 1 deletion(-)
>>
>> diff --git a/arch/arm/boot/dts/aspeed-bmc-ampere-mtmitchell.dts 
>> b/arch/arm/boot/dts/aspeed-bmc-ampere-mtmitchell.dts
>> index 4b91600eaf62..1e0e88465254 100644
>> --- a/arch/arm/boot/dts/aspeed-bmc-ampere-mtmitchell.dts
>> +++ b/arch/arm/boot/dts/aspeed-bmc-ampere-mtmitchell.dts
>> @@ -251,6 +251,14 @@
>>       pinctrl-0 = <&pinctrl_rgmii1_default>;
>>   };
>> +&mac3 {
>> +    status = "okay";
>> +    pinctrl-names = "default";
>> +    pinctrl-0 = <&pinctrl_rmii4_default>;
>> +    clock-names = "MACCLK", "RCLK";
>> +    use-ncsi;
>> +};
>> +
>>   &fmc {
>>       status = "okay";
>>       flash@0 {
>> @@ -439,6 +447,26 @@
>>       status = "okay";
>>   };
>> +&i2c8 {
>> +    status = "okay";
>> +
>> +    gpio@77 {
>> +        compatible = "nxp,pca9539";
>> +        reg = <0x77>;
>> +        gpio-controller;
>> +        #address-cells = <1>;
>> +        #size-cells = <0>;
>> +        #gpio-cells = <2>;
>> +
>> +        bmc-ocp0-en-hog {
>> +            gpio-hog;
>> +            gpios = <7 GPIO_ACTIVE_LOW>;
>> +            output-high;
>> +            line-name = "bmc-ocp0-en-n";
>> +        };
>> +    };
>> +};
>> +
>>   &i2c9 {
>>       status = "okay";
>>   };
>> @@ -530,13 +558,20 @@
>>       /*V0-V7*/    
>> "s0-hightemp-n","s0-fault-alert","s0-sys-auth-failure-n",
>>               "host0-reboot-ack-n","host0-ready","host0-shd-req-n",
>>               "host0-shd-ack-n","s0-overtemp-n",
>> -    /*W0-W7*/    "ocp-aux-pwren","ocp-main-pwren","ocp-pgood","",
>> +    /*W0-W7*/    "","ocp-main-pwren","ocp-pgood","",
>>               "bmc-ok","bmc-ready","spi0-program-sel","spi0-backup-sel",
>>       /*X0-X7*/    "i2c-backup-sel","s1-fault-alert","s1-fw-boot-ok",
>>               
>> "s1-hightemp-n","s0-spi-auth-fail-n","s1-sys-auth-failure-n",
>>               "s1-overtemp-n","s1-spi-auth-fail-n",
>>       /*Y0-Y7*/    "","","","","","","","host0-special-boot",
>>       /*Z0-Z7*/    "reset-button","ps0-pgood","ps1-pgood","","","","","";
>> +
>> +    ocp-aux-pwren-hog {
>> +        gpio-hog;
>> +        gpios = <ASPEED_GPIO(W, 0) GPIO_ACTIVE_HIGH>;
>> +        output-high;
>> +        line-name = "ocp-aux-pwren";
>> +    };
>>   };
>>   &gpio1 {