004c8a8bc5
There is nothing in the specs on DMA engine interrupt lines: it should have
been in the "BCM2835 ARM Peripherals" datasheet but the appropriate
"ARM peripherals interrupt table" (p.113) is nearly empty.
All Raspberry Pi models 1-3 (based on bcm2835) have
Linux device tree (arch/arm/boot/dts/bcm2835-common.dtsi +25):
/* dma channel 11-14 share one irq */
This information is repeated in the driver code
(drivers/dma/bcm2835-dma.c +1344):
/*
* in case of channel >= 11
* use the 11th interrupt and that is shared
*/
In this patch channels 0--10 and 11--14 are handled separately.
Signed-off-by: Andrey Makarov <andrey.makarov@auriga.com>
Message-id: 20220716113210.349153-1-andrey.makarov@auriga.com
[PMM: fixed checkpatch nits]
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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|---|---|---|
| .. | ||
| allwinner-a10.h | ||
| allwinner-h3.h | ||
| armsse-version.h | ||
| armsse.h | ||
| armv7m.h | ||
| aspeed_soc.h | ||
| aspeed.h | ||
| bcm2835_peripherals.h | ||
| bcm2836.h | ||
| boot.h | ||
| digic.h | ||
| exynos4210.h | ||
| fdt.h | ||
| fsl-imx6.h | ||
| fsl-imx6ul.h | ||
| fsl-imx7.h | ||
| fsl-imx25.h | ||
| fsl-imx31.h | ||
| linux-boot-if.h | ||
| msf2-soc.h | ||
| npcm7xx.h | ||
| nrf51_soc.h | ||
| nrf51.h | ||
| omap.h | ||
| primecell.h | ||
| pxa.h | ||
| raspi_platform.h | ||
| sharpsl.h | ||
| smmu-common.h | ||
| smmuv3.h | ||
| soc_dma.h | ||
| stm32f100_soc.h | ||
| stm32f205_soc.h | ||
| stm32f405_soc.h | ||
| virt.h | ||
| xlnx-versal.h | ||
| xlnx-zynqmp.h | ||