linux-kernel - Re: [PATCH v2 27/35] brcmfmac: pcie: Add IDs/properties for BCM4387

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Date:   Fri, 21 Jan 2022 08:35:53 +0100
From:   Arend van Spriel <arend.vanspriel@...adcom.com>
To:     Hector Martin <marcan@...can.st>,
        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>,
        Dmitry Osipenko <digetx@...il.com>
Cc:     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>,
        Linus Walleij <linus.walleij@...aro.org>,
        Hans de Goede <hdegoede@...hat.com>,
        "John W. Linville" <linville@...driver.com>,
        "brian m. carlson" <sandals@...stytoothpaste.net>,
        Andy Shevchenko <andy.shevchenko@...il.com>,
        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 v2 27/35] brcmfmac: pcie: Add IDs/properties for BCM4387

On 1/4/2022 8:26 AM, Hector Martin wrote:
> This chip is present on Apple M1 Pro/Max (t600x) platforms:
> 
> * maldives   (apple,j314s): MacBook Pro (14-inch, M1 Pro, 2021)
> * maldives   (apple,j314c): MacBook Pro (14-inch, M1 Max, 2021)
> * madagascar (apple,j316s): MacBook Pro (16-inch, M1 Pro, 2021)
> * madagascar (apple,j316c): MacBook Pro (16-inch, M1 Max, 2021)
> 
> Reviewed-by: Linus Walleij <linus.walleij@...aro.org>
Reviewed-by: Arend van Spriel <arend.vanspriel@...adcom.com>> 
Signed-off-by: Hector Martin <marcan@...can.st>
> ---
>   drivers/net/wireless/broadcom/brcm80211/brcmfmac/chip.c   | 2 ++
>   drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c   | 8 ++++++++
>   .../net/wireless/broadcom/brcm80211/include/brcm_hw_ids.h | 2 ++
>   3 files changed, 12 insertions(+)

[...]

> diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c
> index e4f2aff3c0d5..0d76440ec228 100644
> --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c
> +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c
> @@ -63,6 +63,7 @@ BRCMF_FW_DEF(4366C, "brcmfmac4366c-pcie");
>   BRCMF_FW_DEF(4371, "brcmfmac4371-pcie");
>   BRCMF_FW_CLM_DEF(4377B3, "brcmfmac4377b3-pcie");
>   BRCMF_FW_CLM_DEF(4378B1, "brcmfmac4378b1-pcie");
> +BRCMF_FW_CLM_DEF(4387C2, "brcmfmac4387c2-pcie");
>   
>   /* firmware config files */
>   MODULE_FIRMWARE(BRCMF_FW_DEFAULT_PATH "brcmfmac*-pcie.txt");
> @@ -96,6 +97,7 @@ static const struct brcmf_firmware_mapping brcmf_pcie_fwnames[] = {
>   	BRCMF_FW_ENTRY(BRCM_CC_4371_CHIP_ID, 0xFFFFFFFF, 4371),
>   	BRCMF_FW_ENTRY(BRCM_CC_4377_CHIP_ID, 0xFFFFFFFF, 4377B3), /* 4 */
>   	BRCMF_FW_ENTRY(BRCM_CC_4378_CHIP_ID, 0xFFFFFFFF, 4378B1), /* 3 */
> +	BRCMF_FW_ENTRY(BRCM_CC_4387_CHIP_ID, 0xFFFFFFFF, 4387C2), /* 7 */

Regarding the revmask in this firmware mapping table my common practice 
was to disable older revisions and enable for given revision and newer 
until proven otherwise. So for the 4387c2 that would have to following 
mask 0xFFFFFF80 (if rev 7 indeed matches with c2).

>   };
>   
>   #define BRCMF_PCIE_FW_UP_TIMEOUT		5000 /* msec */

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