From: Rob Herring <robh@kernel.org>
To: Conor Dooley <conor@kernel.org>
Cc: Radhey Shyam Pandey <radhey.shyam.pandey@amd.com>,
gregkh@linuxfoundation.org, krzk+dt@kernel.org,
conor+dt@kernel.org, michal.simek@amd.com,
linux-usb@vger.kernel.org, devicetree@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, git@amd.com
Subject: Re: [PATCH] dt-bindings: usb: dwc3-xilinx: allow dma-coherent
Date: Tue, 27 May 2025 14:26:33 -0500 [thread overview]
Message-ID: <20250527192633.GA1084631-robh@kernel.org> (raw)
In-Reply-To: <20250516-exclusion-suffocate-94a1c87c1262@spud>
On Fri, May 16, 2025 at 03:16:02PM +0100, Conor Dooley wrote:
> On Fri, May 16, 2025 at 06:48:36PM +0530, Radhey Shyam Pandey wrote:
> > On Versal Gen 2 SoC the LPD USB DMA controller is coherent with the CPU
> > so allow specifying the information.
>
> Sounds like it should actually be marked required on this platform, no?
Should still work without it, just more overhead of unnecessary cache
flushes.
Rob
next prev parent reply other threads:[~2025-05-27 19:28 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-05-16 13:18 [PATCH] dt-bindings: usb: dwc3-xilinx: allow dma-coherent Radhey Shyam Pandey
2025-05-16 14:16 ` Conor Dooley
2025-05-27 19:26 ` Rob Herring [this message]
2025-05-27 19:26 ` Rob Herring (Arm)
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