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

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Date:   Mon, 6 Mar 2023 00:52:33 +0000
From:   Joel Stanley <joel@....id.au>
To:     Chanh Nguyen <chanh@...eremail.onmicrosoft.com>
Cc:     Paul Menzel <pmenzel@...gen.mpg.de>,
        Chanh Nguyen <chanh@...amperecomputing.com>,
        OpenBMC Maillist <openbmc@...ts.ozlabs.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.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 v2] ARM: dts: aspeed: mtmitchell: Enable NCSI

On Sun, 5 Mar 2023 at 15:59, Chanh Nguyen
<chanh@...eremail.onmicrosoft.com> wrote:
>
>
>
> 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.

That sounds reasonable.

>
> 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 {