linux-kernel - Re: [PATCH v5 15/15] dmaengine: imx-sdma: add uart rom script

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Date:   Mon, 10 Jun 2019 18:25:34 +0530
From:   Vinod Koul <vkoul@...nel.org>
To:     yibin.gong@....com
Cc:     robh+dt@...nel.org, mark.rutland@....com, shawnguo@...nel.org,
        s.hauer@...gutronix.de, kernel@...gutronix.de, broonie@...nel.org,
        festevam@...il.com, dan.j.williams@...el.com,
        u.kleine-koenig@...gutronix.de, catalin.marinas@....com,
        l.stach@...gutronix.de, will.deacon@....com,
        linux-spi@...r.kernel.org, linux-imx@....com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        dmaengine@...r.kernel.org, devicetree@...r.kernel.org
Subject: Re: [PATCH v5 15/15] dmaengine: imx-sdma: add uart rom script

On 10-06-19, 16:17, yibin.gong@....com wrote:
> From: Robin Gong <yibin.gong@....com>
> 
> For the compatibility of NXP internal legacy kernel before 4.19 which
> is based on uart ram script and upstreaming kernel based on uart rom
> script, add both uart ram/rom script in latest sdma firmware. By default
> uart rom script used.
> Besides, add two multi-fifo scripts for SAI/PDM on i.mx8m/8mm and add
> back qspi script miss for v4(i.mx7d/8m/8mm family, but v3 is for i.mx6).
> 
> rom script:
> 	uart_2_mcu_addr
> 	uartsh_2_mcu_addr /* through spba bus */
> ram script:
> 	uart_2_mcu_ram_addr
> 	uartsh_2_mcu_ram_addr /* through spba bus */
> 
> Please get latest sdma firmware from the below and put them into the path
> (/lib/firmware/imx/sdma/):
> https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git
> /tree/imx/sdma

How does this work with folks have older firmware?

> 
> Signed-off-by: Robin Gong <yibin.gong@....com>
> ---
>  drivers/dma/imx-sdma.c                     |  4 ++--
>  include/linux/platform_data/dma-imx-sdma.h | 10 ++++++++--
>  2 files changed, 10 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c
> index f7c150d..deea9aa 100644
> --- a/drivers/dma/imx-sdma.c
> +++ b/drivers/dma/imx-sdma.c
> @@ -1733,8 +1733,8 @@ static void sdma_issue_pending(struct dma_chan *chan)
>  
>  #define SDMA_SCRIPT_ADDRS_ARRAY_SIZE_V1	34
>  #define SDMA_SCRIPT_ADDRS_ARRAY_SIZE_V2	38
> -#define SDMA_SCRIPT_ADDRS_ARRAY_SIZE_V3	41
> -#define SDMA_SCRIPT_ADDRS_ARRAY_SIZE_V4	42
> +#define SDMA_SCRIPT_ADDRS_ARRAY_SIZE_V3	45
> +#define SDMA_SCRIPT_ADDRS_ARRAY_SIZE_V4	46
>  
>  static void sdma_add_scripts(struct sdma_engine *sdma,
>  		const struct sdma_script_start_addrs *addr)
> diff --git a/include/linux/platform_data/dma-imx-sdma.h b/include/linux/platform_data/dma-imx-sdma.h
> index f794fee..e12d2e8 100644
> --- a/include/linux/platform_data/dma-imx-sdma.h
> +++ b/include/linux/platform_data/dma-imx-sdma.h
> @@ -20,12 +20,12 @@ struct sdma_script_start_addrs {
>  	s32 per_2_firi_addr;
>  	s32 mcu_2_firi_addr;
>  	s32 uart_2_per_addr;
> -	s32 uart_2_mcu_addr;
> +	s32 uart_2_mcu_ram_addr;
>  	s32 per_2_app_addr;
>  	s32 mcu_2_app_addr;
>  	s32 per_2_per_addr;
>  	s32 uartsh_2_per_addr;
> -	s32 uartsh_2_mcu_addr;
> +	s32 uartsh_2_mcu_ram_addr;
>  	s32 per_2_shp_addr;
>  	s32 mcu_2_shp_addr;
>  	s32 ata_2_mcu_addr;
> @@ -52,7 +52,13 @@ struct sdma_script_start_addrs {
>  	s32 zcanfd_2_mcu_addr;
>  	s32 zqspi_2_mcu_addr;
>  	s32 mcu_2_ecspi_addr;
> +	s32 mcu_2_sai_addr;
> +	s32 sai_2_mcu_addr;
> +	s32 uart_2_mcu_addr;
> +	s32 uartsh_2_mcu_addr;
>  	/* End of v3 array */
> +	s32 mcu_2_zqspi_addr;
> +	/* End of v4 array */
>  };
>  
>  /**
> -- 
> 2.7.4

-- 
~Vinod