From: Dan Carpenter <dan.carpenter@oracle.com>
To: Mwesigwa Guma <mguma@redhat.com>
Cc: linux-kernel@vger.kernel.org,
Nicolas Saenz Julienne <nsaenz@kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Stefan Wahren <stefan.wahren@i2se.com>,
Ojaswin Mujoo <ojaswin98@gmail.com>,
Amarjargal Gundjalam <amarjargal16@gmail.com>,
Phil Elwell <phil@raspberrypi.com>,
bcm-kernel-feedback-list@broadcom.com,
linux-rpi-kernel@lists.infradead.org,
linux-arm-kernel@lists.infradead.org,
linux-staging@lists.linux.dev, fedora-rpi@googlegroups.com,
Joel Savitz <jsavitz@redhat.com>,
Chukpozohn Toe <ctoe@redhat.com>,
Clark Williams <clark@redhat.com>
Subject: Re: [PATCH] staging: vchiq_arm: Add 36-bit address support
Date: Fri, 15 Oct 2021 10:30:42 +0300 [thread overview]
Message-ID: <20211015073042.GP8429@kadam> (raw)
In-Reply-To: <20211014223230.451659-1-mguma@redhat.com>
On Thu, Oct 14, 2021 at 06:32:30PM -0400, Mwesigwa Guma wrote:
> Cc: Nicolas Saenz Julienne <nsaenz@kernel.org>
> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> Cc: Stefan Wahren <stefan.wahren@i2se.com>
> Cc: Ojaswin Mujoo <ojaswin98@gmail.com>
> Cc: Dan Carpenter <dan.carpenter@oracle.com>
> Cc: Amarjargal Gundjalam <amarjargal16@gmail.com>
> Cc: Phil Elwell <phil@raspberrypi.com>
> Cc: bcm-kernel-feedback-list@broadcom.com
> Cc: linux-rpi-kernel@lists.infradead.org
> Cc: linux-arm-kernel@lists.infradead.org
> Cc: linux-staging@lists.linux.dev
> Cc: fedora-rpi@googlegroups.com
> Cc: Joel Savitz <jsavitz@redhat.com>
> Cc: Chukpozohn Toe <ctoe@redhat.com>
> Cc: Clark Williams <clark@redhat.com>
>
Did you intend to put this CC list here? It goes at the end next to
the Signed-off-by line if so. I don't feel like it's required except
maybe Phil to show he was Cc'd.
> This is a forward port of Phil Elwell's commit from the Raspberry Pi
> Linux fork described as follows [1]:
Please use the From: header to give authorship credit.
From: Phil Elwell <phil@raspberrypi.com>
Make that the first line of the email.
>
> Conditional on a new compatible string, change the pagelist encoding
> such that the top 24 bits are the pfn, leaving 8 bits for run length
> (-1), giving a 36-bit address range.
>
> Manage the split between addresses for the VPU and addresses for the
> 40-bit DMA controller with a dedicated DMA device pointer that on non-
> BCM2711 platforms is the same as the main VCHIQ device. This allows
> the VCHIQ node to stay in the usual place in the DT.
>
> This commit enables VCHIQ device access on a Raspberry Pi 4B running the
> mainline Linux kernel.
>
> Tested on Fedora Linux running on a Raspberry Pi 4B.
>
> [1]: https://github.com/raspberrypi/linux/commit/97268fd23eb8d08dc74eac5e3fd697303de26610
>
> Signed-off-by: Mwesigwa Guma <mguma@redhat.com>
regards,
dan carpenter
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next prev parent reply other threads:[~2021-10-15 7:32 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-14 22:32 [PATCH] staging: vchiq_arm: Add 36-bit address support Mwesigwa Guma
2021-10-15 7:30 ` Dan Carpenter [this message]
2021-10-15 8:19 ` nicolas saenz julienne
2021-10-17 13:31 ` Stefan Wahren
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