From: Stefan Wahren <wahrenst@gmx.net>
To: Andrea della Porta <andrea.porta@suse.com>,
Vinod Koul <vkoul@kernel.org>,
Florian Fainelli <florian.fainelli@broadcom.com>,
Ray Jui <rjui@broadcom.com>,
Scott Branden <sbranden@broadcom.com>,
Broadcom internal kernel review list
<bcm-kernel-feedback-list@broadcom.com>,
dmaengine@vger.kernel.org, linux-rpi-kernel@lists.infradead.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org,
Dave Stevenson <dave.stevenson@raspberrypi.com>
Cc: Maxime Ripard <maxime@cerno.tech>,
Dom Cobley <popcornmix@gmail.com>,
Phil Elwell <phil@raspberrypi.com>
Subject: Re: [PATCH 02/12] bcm2835-dma: Add proper 40-bit DMA support
Date: Mon, 5 Feb 2024 19:50:44 +0100 [thread overview]
Message-ID: <8736c115-e11c-41ca-85eb-7cd19a205068@gmx.net> (raw)
In-Reply-To: <eeb94204c30c2182f5ffd3ec083c04399ecdee32.1706948717.git.andrea.porta@suse.com>
Hi Andrea,
[add Dave]
Am 04.02.24 um 07:59 schrieb Andrea della Porta:
> From: Phil Elwell <phil@raspberrypi.org>
>
> BCM2711 has 4 DMA channels with a 40-bit address range, allowing them
> to access the full 4GB of memory on a Pi 4.
>
> Cc: Phil Elwell <phil@raspberrypi.org>
> Cc: Maxime Ripard <maxime@cerno.tech>
> Signed-off-by: Andrea della Porta <andrea.porta@suse.com>
mainlining isn't that simple by sending just the downstream patches to
the mailing list. In many cases there reasons why this hasn't been
upstreamed yet.
In my opinion just this feature is worth a separate patch series. In
2021 i already send an initial version, which tried to implement it in a
cleaner & maintainabler way [1]. In the meantime Dave Stevenson from
Raspberry Pi wrote that he also wanted to work on this. Maybe you want
to work on this together?
[1] -
https://lore.kernel.org/linux-arm-kernel/13ec386b-2305-27da-9765-8fa3ad71146c@i2se.com/T/
next prev parent reply other threads:[~2024-02-05 18:51 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-04 6:59 [PATCH 00/12] Add support for BCM2712 DMA engine Andrea della Porta
2024-02-04 6:59 ` [PATCH 01/12] bcm2835-dma: Add support for per-channel flags Andrea della Porta
2024-02-04 6:59 ` [PATCH 02/12] bcm2835-dma: Add proper 40-bit DMA support Andrea della Porta
2024-02-05 18:50 ` Stefan Wahren [this message]
2024-02-06 16:31 ` Dave Stevenson
2024-02-06 18:08 ` Stefan Wahren
2024-02-06 18:11 ` Stefan Wahren
2024-02-04 6:59 ` [PATCH 03/12] bcm2835-dma: Add NO_WAIT_RESP, DMA_WIDE_SOURCE and DMA_WIDE_DEST flag Andrea della Porta
2024-02-04 6:59 ` [PATCH 04/12] bcm2835-dma: Advertise the full DMA range Andrea della Porta
2024-02-05 17:55 ` Robin Murphy
2024-03-01 13:55 ` Andrea della Porta
2024-02-05 18:25 ` Stefan Wahren
2024-02-04 6:59 ` [PATCH 05/12] bcm2835-dma: Derive slave DMA addresses correctly Andrea della Porta
2024-02-05 18:03 ` Robin Murphy
2024-02-04 6:59 ` [PATCH 06/12] dmaengine: bcm2835: Use to_bcm2711_cbaddr where relevant Andrea della Porta
2024-02-04 17:04 ` Florian Fainelli
2024-02-05 10:25 ` Andrea della Porta
2024-02-04 6:59 ` [PATCH 07/12] bcm2835-dma: Support dma flags for multi-beat burst Andrea della Porta
2024-02-07 8:22 ` Vinod Koul
2024-02-04 6:59 ` [PATCH 08/12] bcm2835-dma: Need to keep PROT bits set in CS on 40bit controller Andrea della Porta
2024-02-04 6:59 ` [PATCH 09/12] dmaengine: bcm2835: Add BCM2712 support Andrea della Porta
2024-02-04 6:59 ` [PATCH 10/12] dmaengine: bcm2835: Support DMA-Lite channels Andrea della Porta
2024-02-07 8:26 ` Vinod Koul
2024-02-04 6:59 ` [PATCH 11/12] dmaengine: bcm2835: Rename to_bcm2711_cbaddr to to_40bit_cbaddr Andrea della Porta
2024-02-04 6:59 ` [PATCH 12/12] bcm2835-dma: Fixes for dma_abort Andrea della Porta
2024-02-05 19:06 ` [PATCH 00/12] Add support for BCM2712 DMA engine Stefan Wahren
2024-02-07 8:19 ` Vinod Koul
2024-02-07 10:24 ` Andrea della Porta
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