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Koen Vandeputte 74738c4b80 imx6: fix DMA transaction errors ... Following errors were seen in the past on imx6 when using serial: [ 22.617622] imx-uart 2020000.serial: DMA transaction error. [ 22.623228] imx-uart 2020000.serial: DMA transaction error. [ 22.628826] imx-uart 2020000.serial: DMA transaction error. [ 22.648951] imx-uart 2020000.serial: DMA transaction error. [ 22.654558] imx-uart 2020000.serial: DMA transaction error. [ 22.660156] imx-uart 2020000.serial: DMA transaction error. Which is the reason why DMA for the serial ports got disabled in commits: efb362cd93 ("imx6: disable dma on uart") 3b4241071d ("imx6: disable UART dma") As indicated on mailinglist discussion, the cause seems to be the usage of very old SDMA firmware which is present in the soc: [ 0.624302] imx-sdma 20ec000.sdma: Direct firmware load for imx/sdma/sdma-imx6q.bin failed with error -2 [ 0.624318] imx-sdma 20ec000.sdma: Falling back to user helper [ 64.531607] imx-sdma 20ec000.sdma: external firmware not found, using ROM firmware This patch adds the new firmware binary. (2196 bytes) It is required to embed the binary into the kernel image, as it gets loaded very early in the boot process where the rootfs is not available yet: [ 0.622966] imx-sdma 20ec000.sdma: loaded firmware 3.3 Extended testing shows that the DMA errors are not seen anymore when using this newer firmware version. Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com>		6 years ago
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base-files	imx6: Initial support for SolidRun CuBox-i devices based on i.MX6 processors (i1, i2, i2eX, and i4Pro).	6 years ago
files/firmware/imx/sdma	imx6: fix DMA transaction errors	6 years ago
image	imx6: use BUILD_DEVICES in uboot-imx6 for mx6cuboxi	6 years ago
patches-4.14	imx6: fix DMA transaction errors	6 years ago
profiles	imx6: rename Generic profile to Default, fixes u-boot image build issue	6 years ago
Makefile	imx6: extend cubox support to hummingboard, add support for building full images	6 years ago
config-4.14	imx6: fix DMA transaction errors	6 years ago