Hi Shawn On 2016年08月05日 10:53, Shawn Lin wrote:
Currently pl330 doesn't support transfer which doesn't align with burst len * burst size. This should be only for single mode. Let's allow it for busrt mode if available. e.g. transfers 0x10002 bytes: First loop 256*16*16=0x10000, burst size is 1, burst length is 16. Then the second loop 2 bytes, burst size is 1, burst length is 1. f0041000: DMAMOV CCR 0xbc02f1 f0041006: DMAMOV SAR 0xdd6c0000 f004100c: DMAMOV DAR 0xff1d0400 f0041012: DMALP_0 15 f0041014: DMALP_1 255 f0041016: DMAWFPB 12 f0041018: DMALDA f0041019: DMASTPB 12 f004101b: DMAFLUSHP 12 f004101d: DMALPENDA_1 bjmpto_7 f004101f: DMALPENDA_0 bjmpto_b f0041021: DMAMOV CCR 0x800201 f0041027: DMALP_1 1 f0041029: DMAWFPB 12 f004102b: DMALDA f004102c: DMASTPB 12 f004102e: DMAFLUSHP 12 f0041030: DMALPENDA_1 bjmpto_7 f0041032: DMASEV 0 f0041034: DMAEND Signed-off-by: Shawn Lin <shawn.lin@xxxxxxxxxxxxxx>
Tested-by: Xing Zheng <zhengxing@xxxxxxxxxxxxxx> Thanks. -- - Xing Zheng -- To unsubscribe from this list: send the line "unsubscribe dmaengine" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
