Messages in this thread | | | Date | Mon, 5 Feb 2024 20:06:25 +0100 | Subject | Re: [PATCH 00/12] Add support for BCM2712 DMA engine | From | Stefan Wahren <> |
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Hi Andrea,
Am 04.02.24 um 07:59 schrieb Andrea della Porta: > This patchset aims to update the dma engine for BCM* chipset with respect > to current advancements in downstream vendor tree. In particular: > > * Added support for BCM2712 DMA. > * Extended DMA addressing to 40 bit. Since BCM2711 also supports 40 bit addressing, > it will also benefit from the update. > * Handled the devicetree node from vendor dts (e.g. "dma40"). > > The only difference between the application of this patch and the relative code > in vendor tree is the dropping of channel reservation for BCM2708 DMA legacy > driver, that seems to have not made its way to upstream anyway, and it's > probably used only from deprecated subsystems. > > Compile tested and runtime tested on RPi4B only. sorry but this is not sufficient. AFAIK only the Raspberry Pi 5 has a BCM2712. I suggest to start with BCM2711 40 bit support, which is enough work.
This whole series does neither contain a change to the dt-bindings nor to the DTS files. This is not how it works.
Best regards > > Dom Cobley (4): > bcm2835-dma: Support dma flags for multi-beat burst > bcm2835-dma: Need to keep PROT bits set in CS on 40bit controller > dmaengine: bcm2835: Rename to_bcm2711_cbaddr to to_40bit_cbaddr > bcm2835-dma: Fixes for dma_abort > > Maxime Ripard (2): > dmaengine: bcm2835: Use to_bcm2711_cbaddr where relevant > dmaengine: bcm2835: Support DMA-Lite channels > > Phil Elwell (6): > bcm2835-dma: Add support for per-channel flags > bcm2835-dma: Add proper 40-bit DMA support > bcm2835-dma: Add NO_WAIT_RESP, DMA_WIDE_SOURCE and DMA_WIDE_DEST flag > bcm2835-dma: Advertise the full DMA range > bcm2835-dma: Derive slave DMA addresses correctly > dmaengine: bcm2835: Add BCM2712 support > > drivers/dma/bcm2835-dma.c | 701 ++++++++++++++++++++++++++++++++------ > 1 file changed, 588 insertions(+), 113 deletions(-) >
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