Messages in this thread | | | Subject | Re: [PATCH v11 12/12] dmaengine: imx-sdma: add uart rom script | From | Frieder Schrempf <> | Date | Mon, 10 Aug 2020 09:32:44 +0200 |
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Hi Robin,
On 24.07.20 20:51, Robin Gong wrote: > 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 */ > am 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://eur04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgit.kernel.org%2Fpub%2Fscm%2Flinux%2Fkernel%2Fgit%2Ffirmware%2Flinux-firmware.git&data=02%7C01%7Cfrieder.schrempf%40kontron.de%7Caa98331fadca476ca15c08d82fbdaf32%7C8c9d3c973fd941c8a2b1646f3942daf1%7C0%7C0%7C637311839017457806&sdata=cbM33k4fdr0IAni1njQWgIrzxbEJ%2BQBkxN10fnagO6k%3D&reserved=0 > /tree/imx/sdma > > Signed-off-by: Robin Gong <yibin.gong@nxp.com> > Acked-by: Vinod Koul <vkoul@kernel.org>
This patch seems to break UART DMA in case the ROM firmware is used. In that case sdma->script_number is set to SDMA_SCRIPT_ADDRS_ARRAY_SIZE_V1, so the ROM scripts at uart_2_mcu_addr and uartsh_2_mcu_addr will never be added in sdma_add_scripts() as they are now moved beyond the V1 max index.
Reverting this patch fixes UART DMA with ROM firmware. Can you please find a way to fix this or just drop this change?
Thanks, Frieder
> --- > drivers/dma/imx-sdma.c | 4 ++-- > include/linux/platform_data/dma-imx-sdma.h | 8 ++++++-- > 2 files changed, 8 insertions(+), 4 deletions(-) > > diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c > index 8735606..5900e32 100644 > --- a/drivers/dma/imx-sdma.c > +++ b/drivers/dma/imx-sdma.c > @@ -1729,8 +1729,8 @@ 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 30e676b..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; > @@ -52,6 +52,10 @@ 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 */ >
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