[PATCH] spi: zynqmp_qspi: Workaround for small data cache issue

[Michal Simek]

On 9/14/23 12:48, Venkatesh Yadav Abbarapu wrote:
> 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 at amd.com>
> Signed-off-by: Venkatesh Yadav Abbarapu <venkatesh.abbarapu at 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",

I got two patches. Which one is correct?
Can you please send v2?

M