Re: [PATCH v11 12/12] dmaengine: imx-sdma: add uart rom script

From: Robert Schwebel
Date: Mon Aug 10 2020 - 09:06:43 EST


On Mon, Aug 10, 2020 at 10:57:42AM +0000, Robin Gong wrote:
> diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c
> index 5900e32..4db55b9 100644
> --- a/drivers/dma/imx-sdma.c
> +++ b/drivers/dma/imx-sdma.c
> @@ -1754,6 +1754,19 @@ static void sdma_add_scripts(struct sdma_engine *sdma,
> for (i = 0; i < sdma->script_number; i++)
> if (addr_arr[i] > 0)
> saddr_arr[i] = addr_arr[i];
> +
> + /*
> + * get uart_2_mcu_addr/uartsh_2_mcu_addr rom script specially because
> + * they are now replaced by uart_2_mcu_ram_addr/uartsh_2_mcu_ram_addr
> + * to be compatible with legacy freescal/nxp sdma firmware, and they

freescale

> + * are located in the bottom part of sdma_script_start_addrs which are
> + * beyond the SDMA_SCRIPT_ADDRS_ARRAY_SIZE_V1.
> + */

rsc
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