diff mbox series

[v3,2/5] remoteproc: imx_rproc: fix TCM io memory type

Message ID 20210805033206.1295269-2-aisheng.dong@nxp.com (mailing list archive)
State New, archived
Headers show
Series [v3,1/5] remoteproc: fix the wrong default value of is_iomem | expand

Commit Message

Dong Aisheng Aug. 5, 2021, 3:32 a.m. UTC
is_iomem was introduced in the commit 40df0a91b2a5 ("remoteproc: add
is_iomem to da_to_va"), but the driver seemed missed to provide the io
type correctly.
This patch updates remoteproc driver to indicate the TCM on IMX are io
memories. Without the change, remoteproc kick will fail.

Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Peng Fan <peng.fan@nxp.com>
Fixes: 79806d32d5aa ("remoteproc: imx_rproc: support i.MX8MN/P")
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
---
ChangeLog:
v2->v3:
 * fix commit message typo and drop imx8ulp fixes tag
   Patch content unchanged.
v1->v2:
 * using ioremap_wc for non TCM memory
---
 drivers/remoteproc/imx_rproc.c | 35 ++++++++++++++++++++--------------
 1 file changed, 21 insertions(+), 14 deletions(-)

Comments

Peng Fan Aug. 5, 2021, 9:59 a.m. UTC | #1
> Subject: [PATCH v3 2/5] remoteproc: imx_rproc: fix TCM io memory type
> 
> is_iomem was introduced in the commit 40df0a91b2a5 ("remoteproc: add
> is_iomem to da_to_va"), but the driver seemed missed to provide the io type
> correctly.
> This patch updates remoteproc driver to indicate the TCM on IMX are io
> memories. Without the change, remoteproc kick will fail.
> 
> Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
> Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
> Cc: Peng Fan <peng.fan@nxp.com>
> Fixes: 79806d32d5aa ("remoteproc: imx_rproc: support i.MX8MN/P")
> Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>

Tested-by: Peng Fan <peng.fan@nxp.com>

> ---
> ChangeLog:
> v2->v3:
>  * fix commit message typo and drop imx8ulp fixes tag
>    Patch content unchanged.
> v1->v2:
>  * using ioremap_wc for non TCM memory
> ---
>  drivers/remoteproc/imx_rproc.c | 35 ++++++++++++++++++++--------------
>  1 file changed, 21 insertions(+), 14 deletions(-)
> 
> diff --git a/drivers/remoteproc/imx_rproc.c
> b/drivers/remoteproc/imx_rproc.c index d88f76f5305e..71dcc6dd32e4
> 100644
> --- a/drivers/remoteproc/imx_rproc.c
> +++ b/drivers/remoteproc/imx_rproc.c
> @@ -71,6 +71,7 @@ struct imx_rproc_mem {
>  /* att flags */
>  /* M4 own area. Can be mapped at probe */
>  #define ATT_OWN		BIT(1)
> +#define ATT_IOMEM	BIT(2)
> 
>  /* address translation table */
>  struct imx_rproc_att {
> @@ -117,7 +118,7 @@ struct imx_rproc {
>  static const struct imx_rproc_att imx_rproc_att_imx8mn[] = {
>  	/* dev addr , sys addr  , size	    , flags */
>  	/* ITCM   */
> -	{ 0x00000000, 0x007E0000, 0x00020000, ATT_OWN },
> +	{ 0x00000000, 0x007E0000, 0x00020000, ATT_OWN | ATT_IOMEM },
>  	/* OCRAM_S */
>  	{ 0x00180000, 0x00180000, 0x00009000, 0 },
>  	/* OCRAM */
> @@ -131,7 +132,7 @@ static const struct imx_rproc_att
> imx_rproc_att_imx8mn[] = {
>  	/* DDR (Code) - alias */
>  	{ 0x10000000, 0x40000000, 0x0FFE0000, 0 },
>  	/* DTCM */
> -	{ 0x20000000, 0x00800000, 0x00020000, ATT_OWN },
> +	{ 0x20000000, 0x00800000, 0x00020000, ATT_OWN | ATT_IOMEM },
>  	/* OCRAM_S - alias */
>  	{ 0x20180000, 0x00180000, 0x00008000, ATT_OWN },
>  	/* OCRAM */
> @@ -147,7 +148,7 @@ static const struct imx_rproc_att
> imx_rproc_att_imx8mn[] = {  static const struct imx_rproc_att
> imx_rproc_att_imx8mq[] = {
>  	/* dev addr , sys addr  , size	    , flags */
>  	/* TCML - alias */
> -	{ 0x00000000, 0x007e0000, 0x00020000, 0 },
> +	{ 0x00000000, 0x007e0000, 0x00020000, ATT_IOMEM},
>  	/* OCRAM_S */
>  	{ 0x00180000, 0x00180000, 0x00008000, 0 },
>  	/* OCRAM */
> @@ -159,9 +160,9 @@ static const struct imx_rproc_att
> imx_rproc_att_imx8mq[] = {
>  	/* DDR (Code) - alias */
>  	{ 0x10000000, 0x80000000, 0x0FFE0000, 0 },
>  	/* TCML */
> -	{ 0x1FFE0000, 0x007E0000, 0x00020000, ATT_OWN },
> +	{ 0x1FFE0000, 0x007E0000, 0x00020000, ATT_OWN  | ATT_IOMEM},
>  	/* TCMU */
> -	{ 0x20000000, 0x00800000, 0x00020000, ATT_OWN },
> +	{ 0x20000000, 0x00800000, 0x00020000, ATT_OWN  | ATT_IOMEM},
>  	/* OCRAM_S */
>  	{ 0x20180000, 0x00180000, 0x00008000, ATT_OWN },
>  	/* OCRAM */
> @@ -199,12 +200,12 @@ static const struct imx_rproc_att
> imx_rproc_att_imx7d[] = {
>  	/* OCRAM_PXP (Code) - alias */
>  	{ 0x00940000, 0x00940000, 0x00008000, 0 },
>  	/* TCML (Code) */
> -	{ 0x1FFF8000, 0x007F8000, 0x00008000, ATT_OWN },
> +	{ 0x1FFF8000, 0x007F8000, 0x00008000, ATT_OWN | ATT_IOMEM },
>  	/* DDR (Code) - alias, first part of DDR (Data) */
>  	{ 0x10000000, 0x80000000, 0x0FFF0000, 0 },
> 
>  	/* TCMU (Data) */
> -	{ 0x20000000, 0x00800000, 0x00008000, ATT_OWN },
> +	{ 0x20000000, 0x00800000, 0x00008000, ATT_OWN | ATT_IOMEM },
>  	/* OCRAM (Data) */
>  	{ 0x20200000, 0x00900000, 0x00020000, 0 },
>  	/* OCRAM_EPDC (Data) */
> @@ -218,18 +219,18 @@ static const struct imx_rproc_att
> imx_rproc_att_imx7d[] = {  static const struct imx_rproc_att
> imx_rproc_att_imx6sx[] = {
>  	/* dev addr , sys addr  , size	    , flags */
>  	/* TCML (M4 Boot Code) - alias */
> -	{ 0x00000000, 0x007F8000, 0x00008000, 0 },
> +	{ 0x00000000, 0x007F8000, 0x00008000, ATT_IOMEM },
>  	/* OCRAM_S (Code) */
>  	{ 0x00180000, 0x008F8000, 0x00004000, 0 },
>  	/* OCRAM_S (Code) - alias */
>  	{ 0x00180000, 0x008FC000, 0x00004000, 0 },
>  	/* TCML (Code) */
> -	{ 0x1FFF8000, 0x007F8000, 0x00008000, ATT_OWN },
> +	{ 0x1FFF8000, 0x007F8000, 0x00008000, ATT_OWN | ATT_IOMEM },
>  	/* DDR (Code) - alias, first part of DDR (Data) */
>  	{ 0x10000000, 0x80000000, 0x0FFF8000, 0 },
> 
>  	/* TCMU (Data) */
> -	{ 0x20000000, 0x00800000, 0x00008000, ATT_OWN },
> +	{ 0x20000000, 0x00800000, 0x00008000, ATT_OWN | ATT_IOMEM },
>  	/* OCRAM_S (Data) - alias? */
>  	{ 0x208F8000, 0x008F8000, 0x00004000, 0 },
>  	/* DDR (Data) */
> @@ -341,7 +342,7 @@ static int imx_rproc_stop(struct rproc *rproc)  }
> 
>  static int imx_rproc_da_to_sys(struct imx_rproc *priv, u64 da,
> -			       size_t len, u64 *sys)
> +			       size_t len, u64 *sys, bool *is_iomem)
>  {
>  	const struct imx_rproc_dcfg *dcfg = priv->dcfg;
>  	int i;
> @@ -354,6 +355,8 @@ static int imx_rproc_da_to_sys(struct imx_rproc *priv,
> u64 da,
>  			unsigned int offset = da - att->da;
> 
>  			*sys = att->sa + offset;
> +			if (is_iomem)
> +				*is_iomem = att->flags & ATT_IOMEM;
>  			return 0;
>  		}
>  	}
> @@ -377,7 +380,7 @@ static void *imx_rproc_da_to_va(struct rproc *rproc,
> u64 da, size_t len, bool *i
>  	 * On device side we have many aliases, so we need to convert device
>  	 * address (M4) to system bus address first.
>  	 */
> -	if (imx_rproc_da_to_sys(priv, da, len, &sys))
> +	if (imx_rproc_da_to_sys(priv, da, len, &sys, is_iomem))
>  		return NULL;
> 
>  	for (i = 0; i < IMX_RPROC_MEM_MAX; i++) { @@ -553,8 +556,12 @@
> static int imx_rproc_addr_init(struct imx_rproc *priv,
>  		if (b >= IMX_RPROC_MEM_MAX)
>  			break;
> 
> -		priv->mem[b].cpu_addr = devm_ioremap(&pdev->dev,
> -						     att->sa, att->size);
> +		if (att->flags & ATT_IOMEM)
> +			priv->mem[b].cpu_addr = devm_ioremap(&pdev->dev,
> +							     att->sa, att->size);
> +		else
> +			priv->mem[b].cpu_addr = devm_ioremap_wc(&pdev->dev,
> +								att->sa, att->size);
>  		if (!priv->mem[b].cpu_addr) {
>  			dev_err(dev, "failed to remap %#x bytes from %#x\n", att->size,
> att->sa);
>  			return -ENOMEM;
> --
> 2.25.1
Mathieu Poirier Aug. 5, 2021, 4:34 p.m. UTC | #2
On Thu, Aug 05, 2021 at 09:59:00AM +0000, Peng Fan wrote:
> > Subject: [PATCH v3 2/5] remoteproc: imx_rproc: fix TCM io memory type
> > 
> > is_iomem was introduced in the commit 40df0a91b2a5 ("remoteproc: add
> > is_iomem to da_to_va"), but the driver seemed missed to provide the io type
> > correctly.
> > This patch updates remoteproc driver to indicate the TCM on IMX are io
> > memories. Without the change, remoteproc kick will fail.
> > 
> > Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
> > Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
> > Cc: Peng Fan <peng.fan@nxp.com>
> > Fixes: 79806d32d5aa ("remoteproc: imx_rproc: support i.MX8MN/P")
> > Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>

Peng added his RB tag during V2 but it wasn't carried here.

> 
> Tested-by: Peng Fan <peng.fan@nxp.com>
> 
> > ---
> > ChangeLog:
> > v2->v3:
> >  * fix commit message typo and drop imx8ulp fixes tag
> >    Patch content unchanged.
> > v1->v2:
> >  * using ioremap_wc for non TCM memory
> > ---
> >  drivers/remoteproc/imx_rproc.c | 35 ++++++++++++++++++++--------------
> >  1 file changed, 21 insertions(+), 14 deletions(-)
> > 
> > diff --git a/drivers/remoteproc/imx_rproc.c
> > b/drivers/remoteproc/imx_rproc.c index d88f76f5305e..71dcc6dd32e4
> > 100644
> > --- a/drivers/remoteproc/imx_rproc.c
> > +++ b/drivers/remoteproc/imx_rproc.c
> > @@ -71,6 +71,7 @@ struct imx_rproc_mem {
> >  /* att flags */
> >  /* M4 own area. Can be mapped at probe */
> >  #define ATT_OWN		BIT(1)
> > +#define ATT_IOMEM	BIT(2)
> > 
> >  /* address translation table */
> >  struct imx_rproc_att {
> > @@ -117,7 +118,7 @@ struct imx_rproc {
> >  static const struct imx_rproc_att imx_rproc_att_imx8mn[] = {
> >  	/* dev addr , sys addr  , size	    , flags */
> >  	/* ITCM   */
> > -	{ 0x00000000, 0x007E0000, 0x00020000, ATT_OWN },
> > +	{ 0x00000000, 0x007E0000, 0x00020000, ATT_OWN | ATT_IOMEM },
> >  	/* OCRAM_S */
> >  	{ 0x00180000, 0x00180000, 0x00009000, 0 },
> >  	/* OCRAM */
> > @@ -131,7 +132,7 @@ static const struct imx_rproc_att
> > imx_rproc_att_imx8mn[] = {
> >  	/* DDR (Code) - alias */
> >  	{ 0x10000000, 0x40000000, 0x0FFE0000, 0 },
> >  	/* DTCM */
> > -	{ 0x20000000, 0x00800000, 0x00020000, ATT_OWN },
> > +	{ 0x20000000, 0x00800000, 0x00020000, ATT_OWN | ATT_IOMEM },
> >  	/* OCRAM_S - alias */
> >  	{ 0x20180000, 0x00180000, 0x00008000, ATT_OWN },
> >  	/* OCRAM */
> > @@ -147,7 +148,7 @@ static const struct imx_rproc_att
> > imx_rproc_att_imx8mn[] = {  static const struct imx_rproc_att
> > imx_rproc_att_imx8mq[] = {
> >  	/* dev addr , sys addr  , size	    , flags */
> >  	/* TCML - alias */
> > -	{ 0x00000000, 0x007e0000, 0x00020000, 0 },
> > +	{ 0x00000000, 0x007e0000, 0x00020000, ATT_IOMEM},
> >  	/* OCRAM_S */
> >  	{ 0x00180000, 0x00180000, 0x00008000, 0 },
> >  	/* OCRAM */
> > @@ -159,9 +160,9 @@ static const struct imx_rproc_att
> > imx_rproc_att_imx8mq[] = {
> >  	/* DDR (Code) - alias */
> >  	{ 0x10000000, 0x80000000, 0x0FFE0000, 0 },
> >  	/* TCML */
> > -	{ 0x1FFE0000, 0x007E0000, 0x00020000, ATT_OWN },
> > +	{ 0x1FFE0000, 0x007E0000, 0x00020000, ATT_OWN  | ATT_IOMEM},
> >  	/* TCMU */
> > -	{ 0x20000000, 0x00800000, 0x00020000, ATT_OWN },
> > +	{ 0x20000000, 0x00800000, 0x00020000, ATT_OWN  | ATT_IOMEM},
> >  	/* OCRAM_S */
> >  	{ 0x20180000, 0x00180000, 0x00008000, ATT_OWN },
> >  	/* OCRAM */
> > @@ -199,12 +200,12 @@ static const struct imx_rproc_att
> > imx_rproc_att_imx7d[] = {
> >  	/* OCRAM_PXP (Code) - alias */
> >  	{ 0x00940000, 0x00940000, 0x00008000, 0 },
> >  	/* TCML (Code) */
> > -	{ 0x1FFF8000, 0x007F8000, 0x00008000, ATT_OWN },
> > +	{ 0x1FFF8000, 0x007F8000, 0x00008000, ATT_OWN | ATT_IOMEM },
> >  	/* DDR (Code) - alias, first part of DDR (Data) */
> >  	{ 0x10000000, 0x80000000, 0x0FFF0000, 0 },
> > 
> >  	/* TCMU (Data) */
> > -	{ 0x20000000, 0x00800000, 0x00008000, ATT_OWN },
> > +	{ 0x20000000, 0x00800000, 0x00008000, ATT_OWN | ATT_IOMEM },
> >  	/* OCRAM (Data) */
> >  	{ 0x20200000, 0x00900000, 0x00020000, 0 },
> >  	/* OCRAM_EPDC (Data) */
> > @@ -218,18 +219,18 @@ static const struct imx_rproc_att
> > imx_rproc_att_imx7d[] = {  static const struct imx_rproc_att
> > imx_rproc_att_imx6sx[] = {
> >  	/* dev addr , sys addr  , size	    , flags */
> >  	/* TCML (M4 Boot Code) - alias */
> > -	{ 0x00000000, 0x007F8000, 0x00008000, 0 },
> > +	{ 0x00000000, 0x007F8000, 0x00008000, ATT_IOMEM },
> >  	/* OCRAM_S (Code) */
> >  	{ 0x00180000, 0x008F8000, 0x00004000, 0 },
> >  	/* OCRAM_S (Code) - alias */
> >  	{ 0x00180000, 0x008FC000, 0x00004000, 0 },
> >  	/* TCML (Code) */
> > -	{ 0x1FFF8000, 0x007F8000, 0x00008000, ATT_OWN },
> > +	{ 0x1FFF8000, 0x007F8000, 0x00008000, ATT_OWN | ATT_IOMEM },
> >  	/* DDR (Code) - alias, first part of DDR (Data) */
> >  	{ 0x10000000, 0x80000000, 0x0FFF8000, 0 },
> > 
> >  	/* TCMU (Data) */
> > -	{ 0x20000000, 0x00800000, 0x00008000, ATT_OWN },
> > +	{ 0x20000000, 0x00800000, 0x00008000, ATT_OWN | ATT_IOMEM },
> >  	/* OCRAM_S (Data) - alias? */
> >  	{ 0x208F8000, 0x008F8000, 0x00004000, 0 },
> >  	/* DDR (Data) */
> > @@ -341,7 +342,7 @@ static int imx_rproc_stop(struct rproc *rproc)  }
> > 
> >  static int imx_rproc_da_to_sys(struct imx_rproc *priv, u64 da,
> > -			       size_t len, u64 *sys)
> > +			       size_t len, u64 *sys, bool *is_iomem)
> >  {
> >  	const struct imx_rproc_dcfg *dcfg = priv->dcfg;
> >  	int i;
> > @@ -354,6 +355,8 @@ static int imx_rproc_da_to_sys(struct imx_rproc *priv,
> > u64 da,
> >  			unsigned int offset = da - att->da;
> > 
> >  			*sys = att->sa + offset;
> > +			if (is_iomem)
> > +				*is_iomem = att->flags & ATT_IOMEM;
> >  			return 0;
> >  		}
> >  	}
> > @@ -377,7 +380,7 @@ static void *imx_rproc_da_to_va(struct rproc *rproc,
> > u64 da, size_t len, bool *i
> >  	 * On device side we have many aliases, so we need to convert device
> >  	 * address (M4) to system bus address first.
> >  	 */
> > -	if (imx_rproc_da_to_sys(priv, da, len, &sys))
> > +	if (imx_rproc_da_to_sys(priv, da, len, &sys, is_iomem))
> >  		return NULL;
> > 
> >  	for (i = 0; i < IMX_RPROC_MEM_MAX; i++) { @@ -553,8 +556,12 @@
> > static int imx_rproc_addr_init(struct imx_rproc *priv,
> >  		if (b >= IMX_RPROC_MEM_MAX)
> >  			break;
> > 
> > -		priv->mem[b].cpu_addr = devm_ioremap(&pdev->dev,
> > -						     att->sa, att->size);
> > +		if (att->flags & ATT_IOMEM)
> > +			priv->mem[b].cpu_addr = devm_ioremap(&pdev->dev,
> > +							     att->sa, att->size);
> > +		else
> > +			priv->mem[b].cpu_addr = devm_ioremap_wc(&pdev->dev,
> > +								att->sa, att->size);
> >  		if (!priv->mem[b].cpu_addr) {
> >  			dev_err(dev, "failed to remap %#x bytes from %#x\n", att->size,
> > att->sa);
> >  			return -ENOMEM;
> > --
> > 2.25.1
>
diff mbox series

Patch

diff --git a/drivers/remoteproc/imx_rproc.c b/drivers/remoteproc/imx_rproc.c
index d88f76f5305e..71dcc6dd32e4 100644
--- a/drivers/remoteproc/imx_rproc.c
+++ b/drivers/remoteproc/imx_rproc.c
@@ -71,6 +71,7 @@  struct imx_rproc_mem {
 /* att flags */
 /* M4 own area. Can be mapped at probe */
 #define ATT_OWN		BIT(1)
+#define ATT_IOMEM	BIT(2)
 
 /* address translation table */
 struct imx_rproc_att {
@@ -117,7 +118,7 @@  struct imx_rproc {
 static const struct imx_rproc_att imx_rproc_att_imx8mn[] = {
 	/* dev addr , sys addr  , size	    , flags */
 	/* ITCM   */
-	{ 0x00000000, 0x007E0000, 0x00020000, ATT_OWN },
+	{ 0x00000000, 0x007E0000, 0x00020000, ATT_OWN | ATT_IOMEM },
 	/* OCRAM_S */
 	{ 0x00180000, 0x00180000, 0x00009000, 0 },
 	/* OCRAM */
@@ -131,7 +132,7 @@  static const struct imx_rproc_att imx_rproc_att_imx8mn[] = {
 	/* DDR (Code) - alias */
 	{ 0x10000000, 0x40000000, 0x0FFE0000, 0 },
 	/* DTCM */
-	{ 0x20000000, 0x00800000, 0x00020000, ATT_OWN },
+	{ 0x20000000, 0x00800000, 0x00020000, ATT_OWN | ATT_IOMEM },
 	/* OCRAM_S - alias */
 	{ 0x20180000, 0x00180000, 0x00008000, ATT_OWN },
 	/* OCRAM */
@@ -147,7 +148,7 @@  static const struct imx_rproc_att imx_rproc_att_imx8mn[] = {
 static const struct imx_rproc_att imx_rproc_att_imx8mq[] = {
 	/* dev addr , sys addr  , size	    , flags */
 	/* TCML - alias */
-	{ 0x00000000, 0x007e0000, 0x00020000, 0 },
+	{ 0x00000000, 0x007e0000, 0x00020000, ATT_IOMEM},
 	/* OCRAM_S */
 	{ 0x00180000, 0x00180000, 0x00008000, 0 },
 	/* OCRAM */
@@ -159,9 +160,9 @@  static const struct imx_rproc_att imx_rproc_att_imx8mq[] = {
 	/* DDR (Code) - alias */
 	{ 0x10000000, 0x80000000, 0x0FFE0000, 0 },
 	/* TCML */
-	{ 0x1FFE0000, 0x007E0000, 0x00020000, ATT_OWN },
+	{ 0x1FFE0000, 0x007E0000, 0x00020000, ATT_OWN  | ATT_IOMEM},
 	/* TCMU */
-	{ 0x20000000, 0x00800000, 0x00020000, ATT_OWN },
+	{ 0x20000000, 0x00800000, 0x00020000, ATT_OWN  | ATT_IOMEM},
 	/* OCRAM_S */
 	{ 0x20180000, 0x00180000, 0x00008000, ATT_OWN },
 	/* OCRAM */
@@ -199,12 +200,12 @@  static const struct imx_rproc_att imx_rproc_att_imx7d[] = {
 	/* OCRAM_PXP (Code) - alias */
 	{ 0x00940000, 0x00940000, 0x00008000, 0 },
 	/* TCML (Code) */
-	{ 0x1FFF8000, 0x007F8000, 0x00008000, ATT_OWN },
+	{ 0x1FFF8000, 0x007F8000, 0x00008000, ATT_OWN | ATT_IOMEM },
 	/* DDR (Code) - alias, first part of DDR (Data) */
 	{ 0x10000000, 0x80000000, 0x0FFF0000, 0 },
 
 	/* TCMU (Data) */
-	{ 0x20000000, 0x00800000, 0x00008000, ATT_OWN },
+	{ 0x20000000, 0x00800000, 0x00008000, ATT_OWN | ATT_IOMEM },
 	/* OCRAM (Data) */
 	{ 0x20200000, 0x00900000, 0x00020000, 0 },
 	/* OCRAM_EPDC (Data) */
@@ -218,18 +219,18 @@  static const struct imx_rproc_att imx_rproc_att_imx7d[] = {
 static const struct imx_rproc_att imx_rproc_att_imx6sx[] = {
 	/* dev addr , sys addr  , size	    , flags */
 	/* TCML (M4 Boot Code) - alias */
-	{ 0x00000000, 0x007F8000, 0x00008000, 0 },
+	{ 0x00000000, 0x007F8000, 0x00008000, ATT_IOMEM },
 	/* OCRAM_S (Code) */
 	{ 0x00180000, 0x008F8000, 0x00004000, 0 },
 	/* OCRAM_S (Code) - alias */
 	{ 0x00180000, 0x008FC000, 0x00004000, 0 },
 	/* TCML (Code) */
-	{ 0x1FFF8000, 0x007F8000, 0x00008000, ATT_OWN },
+	{ 0x1FFF8000, 0x007F8000, 0x00008000, ATT_OWN | ATT_IOMEM },
 	/* DDR (Code) - alias, first part of DDR (Data) */
 	{ 0x10000000, 0x80000000, 0x0FFF8000, 0 },
 
 	/* TCMU (Data) */
-	{ 0x20000000, 0x00800000, 0x00008000, ATT_OWN },
+	{ 0x20000000, 0x00800000, 0x00008000, ATT_OWN | ATT_IOMEM },
 	/* OCRAM_S (Data) - alias? */
 	{ 0x208F8000, 0x008F8000, 0x00004000, 0 },
 	/* DDR (Data) */
@@ -341,7 +342,7 @@  static int imx_rproc_stop(struct rproc *rproc)
 }
 
 static int imx_rproc_da_to_sys(struct imx_rproc *priv, u64 da,
-			       size_t len, u64 *sys)
+			       size_t len, u64 *sys, bool *is_iomem)
 {
 	const struct imx_rproc_dcfg *dcfg = priv->dcfg;
 	int i;
@@ -354,6 +355,8 @@  static int imx_rproc_da_to_sys(struct imx_rproc *priv, u64 da,
 			unsigned int offset = da - att->da;
 
 			*sys = att->sa + offset;
+			if (is_iomem)
+				*is_iomem = att->flags & ATT_IOMEM;
 			return 0;
 		}
 	}
@@ -377,7 +380,7 @@  static void *imx_rproc_da_to_va(struct rproc *rproc, u64 da, size_t len, bool *i
 	 * On device side we have many aliases, so we need to convert device
 	 * address (M4) to system bus address first.
 	 */
-	if (imx_rproc_da_to_sys(priv, da, len, &sys))
+	if (imx_rproc_da_to_sys(priv, da, len, &sys, is_iomem))
 		return NULL;
 
 	for (i = 0; i < IMX_RPROC_MEM_MAX; i++) {
@@ -553,8 +556,12 @@  static int imx_rproc_addr_init(struct imx_rproc *priv,
 		if (b >= IMX_RPROC_MEM_MAX)
 			break;
 
-		priv->mem[b].cpu_addr = devm_ioremap(&pdev->dev,
-						     att->sa, att->size);
+		if (att->flags & ATT_IOMEM)
+			priv->mem[b].cpu_addr = devm_ioremap(&pdev->dev,
+							     att->sa, att->size);
+		else
+			priv->mem[b].cpu_addr = devm_ioremap_wc(&pdev->dev,
+								att->sa, att->size);
 		if (!priv->mem[b].cpu_addr) {
 			dev_err(dev, "failed to remap %#x bytes from %#x\n", att->size, att->sa);
 			return -ENOMEM;