Re: [PATCH v11 12/12] dmaengine: imx-sdma: add uart rom script
From: Frieder Schrempf <hidden>
Date: 2020-08-10 07:32:55
Also in:
dmaengine, linux-devicetree, linux-spi, lkml
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 <redacted>
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
quoted hunk ↗ jump to hunk
--- 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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