Cache related issues are seen with small sized data reads. Due to this, proper data is not read. Also some times sf probe fails randomly. To workaround this issue, invalidate dcache after read DMA is triggered.
Signed-off-by: Ashok Reddy Soma ashok.reddy.soma@amd.com Signed-off-by: Venkatesh Yadav Abbarapu venkatesh.abbarapu@amd.com --- drivers/spi/zynqmp_gqspi.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/spi/zynqmp_gqspi.c b/drivers/spi/zynqmp_gqspi.c index a506d15227..ec59ef5804 100644 --- a/drivers/spi/zynqmp_gqspi.c +++ b/drivers/spi/zynqmp_gqspi.c @@ -707,6 +707,8 @@ static int zynqmp_qspi_start_dma(struct zynqmp_qspi_priv *priv, return -ETIMEDOUT; }
+ invalidate_dcache_range(addr, addr + size); + writel(GQSPI_DMA_DST_I_STS_DONE, &dma_regs->dmaisr);
debug("buf:0x%lx, rxbuf:0x%lx, *buf:0x%x len: 0x%x\n",