linux-kernel - Re: [PATCH 07/34] brcmfmac: pcie: Read Apple OTP information

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Message-ID: <CACRpkdbyFr-ZQuKOtx4+RRRBddmPGGUTY0j2VvT_7KxRBEQzNQ@mail.gmail.com>
Date:   Sun, 2 Jan 2022 06:38:25 +0100
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Hector Martin <marcan@...can.st>
Cc:     Kalle Valo <kvalo@...eaurora.org>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Len Brown <lenb@...nel.org>,
        Arend van Spriel <aspriel@...il.com>,
        Franky Lin <franky.lin@...adcom.com>,
        Hante Meuleman <hante.meuleman@...adcom.com>,
        Chi-hsien Lin <chi-hsien.lin@...ineon.com>,
        Wright Feng <wright.feng@...ineon.com>,
        Chung-hsien Hsu <chung-hsien.hsu@...ineon.com>,
        Sven Peter <sven@...npeter.dev>,
        Alyssa Rosenzweig <alyssa@...enzweig.io>,
        Mark Kettenis <kettenis@...nbsd.org>,
        Rafał Miłecki <zajec5@...il.com>,
        Pieter-Paul Giesberts <pieter-paul.giesberts@...adcom.com>,
        Hans de Goede <hdegoede@...hat.com>,
        "John W. Linville" <linville@...driver.com>,
        "Daniel (Deognyoun) Kim" <dekim@...adcom.com>,
        "brian m. carlson" <sandals@...stytoothpaste.net>,
        linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-acpi@...r.kernel.org, brcm80211-dev-list.pdl@...adcom.com,
        SHA-cyfmac-dev-list@...ineon.com
Subject: Re: [PATCH 07/34] brcmfmac: pcie: Read Apple OTP information

On Sun, Dec 26, 2021 at 4:37 PM Hector Martin <marcan@...can.st> wrote:

> On Apple platforms, the One Time Programmable ROM in the Broadcom chips
> contains information about the specific board design (module, vendor,
> version) that is required to select the correct NVRAM file. Parse this
> OTP ROM and extract the required strings.
>
> Note that the user OTP offset/size is per-chip. This patch does not add
> any chips yet.
>
> Signed-off-by: Hector Martin <marcan@...can.st>

Overall looks fine!

> +       const char *chip_params;
> +       const char *module_params;

This variable name "module_params" is a bit confusing since loadable
kernel modules have params...

Can we think of another name and just put a comment that this
refers to the WiFi module building block?

Sometimes people talk about SoM:s (system-on-modules), so
maybe som_params or brcm_som_params?

Yours,
Linus Walleij