On Wed, Jul 07, 2021 at 05:40:33PM +0800, Dong Aisheng wrote:
> DRAM is not io memory, so changed to ioremap_wc. This is also
> aligned with core io accessories. e.g. memcpy/memset and cpu direct
> access.
>
> Cc: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
> Cc: Mathieu Poirier <mathieu.poirier@xxxxxxxxxx>
> Fixes: 5e4c1243071d ("remoteproc: imx_rproc: support remote cores booted before Linux Kernel")
> Reviewed-by: Peng Fan <peng.fan@xxxxxxx>
> Signed-off-by: Dong Aisheng <aisheng.dong@xxxxxxx>
> ---
> v1->v2:
> * new patch
It's a new patch and yet Peng's RB tag is already on it...
> ---
> drivers/remoteproc/imx_rproc.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/remoteproc/imx_rproc.c b/drivers/remoteproc/imx_rproc.c
> index ff620688fad9..4ae416ba5080 100644
> --- a/drivers/remoteproc/imx_rproc.c
> +++ b/drivers/remoteproc/imx_rproc.c
> @@ -597,7 +597,7 @@ static int imx_rproc_addr_init(struct imx_rproc *priv,
> break;
>
> /* Not use resource version, because we might share region */
> - priv->mem[b].cpu_addr = devm_ioremap(&pdev->dev, res.start, resource_size(&res));
> + priv->mem[b].cpu_addr = devm_ioremap_wc(&pdev->dev, res.start, resource_size(&res));
How was it working before? Will it really work for all platforms and was this
extensively tested?
Peng - I will need an explicit reply from you that you are in agreement with
this change. I will also need you to review patch 01 and 02 of this set.
Thanks,
Mathieu
> if (!priv->mem[b].cpu_addr) {
> dev_err(dev, "failed to remap %pr\n", &res);
> return -ENOMEM;
> --
> 2.25.1
>
