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Re: [PATCH 5/6] hw/char/exynos4210_uart: Add receive DMA support
From: |
Peter Maydell |
Subject: |
Re: [PATCH 5/6] hw/char/exynos4210_uart: Add receive DMA support |
Date: |
Fri, 17 Jan 2020 13:44:24 +0000 |
On Fri, 10 Jan 2020 at 20:39, Guenter Roeck <address@hidden> wrote:
>
> To support receive DMA, we need to inform the DMA controller if receive data
> is available. Otherwise the DMA controller keeps requesting data, causing
> receive errors.
>
> Implement this using an interrupt line. The instantiating code then needs
> to connect the interrupt with the matching DMA controller GPIO pin.
>
> Signed-off-by: Guenter Roeck <address@hidden>
Reviewed-by: Peter Maydell <address@hidden>
thanks
-- PMM
[PATCH 5/6] hw/char/exynos4210_uart: Add receive DMA support, Guenter Roeck, 2020/01/10
- Re: [PATCH 5/6] hw/char/exynos4210_uart: Add receive DMA support,
Peter Maydell <=
[PATCH 3/6] hw/char/exynos4210_uart: Convert to support tracing, Guenter Roeck, 2020/01/10
[PATCH 4/6] hw/char/exynos4210_uart: Implement receive FIFO, Guenter Roeck, 2020/01/10
[PATCH 6/6] hw/arm/exynos4210: Connect serial port DMA busy signals with pl330, Guenter Roeck, 2020/01/10