From: Florian Fainelli <florian.fainelli@broadcom.com>
To: "Alessio Ferri" <alessio.ferri@mythread.it>,
"Rob Herring" <robh@kernel.org>,
"Krzysztof Kozlowski" <krzk+dt@kernel.org>,
"Conor Dooley" <conor+dt@kernel.org>,
"Rafał Miłecki" <zajec5@gmail.com>,
"Philipp Zabel" <p.zabel@pengutronix.de>,
"Broadcom internal kernel review list"
<bcm-kernel-feedback-list@broadcom.com>,
"Thomas Bogendoerfer" <tsbogend@alpha.franken.de>,
"Jonas Gorski" <jonas.gorski@gmail.com>
Cc: linux-wireless@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-mips@vger.kernel.org
Subject: Re: [PATCH v3 3/5] bcma: scan: accept wrapper-less cores on wrapper-less backplanes
Date: Wed, 4 Nov 2026 10:15:46 -0800 [thread overview]
Message-ID: <1113b8a2-70ce-40ea-b8bf-9a40c8116dcc@broadcom.com> (raw)
In-Reply-To: <20261104-bcm6362-wlan-v3-3-e46562b2ac12@mythread.it>
On 11/3/2026 3:30 PM, Alessio Ferri wrote:
> The scan drops every component that publishes no master or slave
> wrapper in the EROM (NMW = NSW = 0), apart from a few known cores,
> because without a wrapper bcma has no agent registers to gate and
> crash. Since usually bcma is loaded early, it ends as a loop-crash.
>
> Some backplanes, such as the integrated WLAN of the BCM6362, have
> no wrappers on any core. ChipCommon and the 802.11 core are gated
> through a SoC-level register block owned by the host driver, whose
> aread32/awrite32 ops emulate the agent registers, and core 0x837
> needs no gating.
>
> Add a wrapperless flag to struct bcma_bus, set by the host driver
> before bcma_init_bus(), and accept these cores without wrappers when
> it is set. Other hosts keep rejecting them.
>
> Signed-off-by: Alessio Ferri <alessio.ferri@mythread.it>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
--
Florian
next prev parent reply other threads:[~2026-11-04 18:15 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-11-03 23:30 [PATCH v3 0/5] bcma: support the BCM6362 integrated WLAN backplane Alessio Ferri
2026-11-03 23:30 ` [PATCH v3 1/5] dt-bindings: bus: add Broadcom BCM6362 WLAN AXI backplane Alessio Ferri
2026-11-03 23:30 ` [PATCH v3 2/5] bcma: scan: support big-endian backplanes Alessio Ferri
2026-11-04 18:15 ` Florian Fainelli
2026-11-03 23:30 ` [PATCH v3 3/5] bcma: scan: accept wrapper-less cores on wrapper-less backplanes Alessio Ferri
2026-11-04 18:15 ` Florian Fainelli [this message]
2026-11-03 23:31 ` [PATCH v3 4/5] bcma: add host driver for the BCM6362 integrated WLAN backplane Alessio Ferri
2026-11-04 9:55 ` Philipp Zabel
2026-11-04 10:51 ` Alessio Ferri
2026-11-04 18:16 ` Florian Fainelli
2026-11-03 23:31 ` [PATCH v3 5/5] MIPS: dts: bcm6362: add the " Alessio Ferri
2026-11-04 18:14 ` Florian Fainelli
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