[PATCH V6 0/5] mailbox: imx: support i.MX93

[PATCH V6 0/5] mailbox: imx: support i.MX93

[Peng Fan (OSS)]

From: Peng Fan <peng.fan@nxp.com>

V6:
 Follow Rob's suggestion for patch 2/5 and add his R-b

V5:
 Per Rob's comments to patch 2/5, add minItems/maxItems for interrupts,
 Use minItems for imx93-mu-s4 interrupts

V4:
 Add A-b for 1/5
 Address Rob's comments in 2/5, passed dt_binding_check and dtbs_check
 Use tx/rx instead txirq/rxirq in 4/5

V3:
 Add R-b for 1/5 2/5
 Split V2 patch 4/4 into two patch 4/5, patch 5/5

V2:
 Fix dt bindings in patch 1/4 2/4
 Squash author/copyright patch into patch 4/4

Based on: https://lkml.org/lkml/2022/2/6/304
Add i.MX93 Generic MU and S4 MU support
i.MX93 S4 MU has some changes compared with i.MX8ULP S4 MU, it
has two interrupts, tx/rx, so also update dt binding doc.

Peng Fan (5):
  dt-bindings: mailbox: imx-mu: add i.MX93 MU
  dt-bindings: mailbox: imx-mu: add i.MX93 S4 MU support
  mailbox: imx: extend irq to an array
  mailbox: imx: support dual interrupts
  mailbox: imx: support i.MX93 S401 MU

 .../devicetree/bindings/mailbox/fsl,mu.yaml   | 34 +++++++++++-
 drivers/mailbox/imx-mailbox.c                 | 53 +++++++++++++++----
 2 files changed, 75 insertions(+), 12 deletions(-)

-- 
2.25.1

[PATCH V6 0/5] mailbox: imx: support i.MX93

[Peng Fan (OSS)]

From: Peng Fan <peng.fan@nxp.com>

V6:
 Follow Rob's suggestion for patch 2/5 and add his R-b

V5:
 Per Rob's comments to patch 2/5, add minItems/maxItems for interrupts,
 Use minItems for imx93-mu-s4 interrupts

V4:
 Add A-b for 1/5
 Address Rob's comments in 2/5, passed dt_binding_check and dtbs_check
 Use tx/rx instead txirq/rxirq in 4/5

V3:
 Add R-b for 1/5 2/5
 Split V2 patch 4/4 into two patch 4/5, patch 5/5

V2:
 Fix dt bindings in patch 1/4 2/4
 Squash author/copyright patch into patch 4/4

Based on: https://lkml.org/lkml/2022/2/6/304
Add i.MX93 Generic MU and S4 MU support
i.MX93 S4 MU has some changes compared with i.MX8ULP S4 MU, it
has two interrupts, tx/rx, so also update dt binding doc.

Peng Fan (5):
  dt-bindings: mailbox: imx-mu: add i.MX93 MU
  dt-bindings: mailbox: imx-mu: add i.MX93 S4 MU support
  mailbox: imx: extend irq to an array
  mailbox: imx: support dual interrupts
  mailbox: imx: support i.MX93 S401 MU

 .../devicetree/bindings/mailbox/fsl,mu.yaml   | 34 +++++++++++-
 drivers/mailbox/imx-mailbox.c                 | 53 +++++++++++++++----
 2 files changed, 75 insertions(+), 12 deletions(-)

-- 
2.25.1


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[PATCH V6 1/5] dt-bindings: mailbox: imx-mu: add i.MX93 MU

[Peng Fan (OSS)]

From: Peng Fan <peng.fan@nxp.com>

Add bindings for i.MX93 MU which derived from i.MX8ULP

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
---
 Documentation/devicetree/bindings/mailbox/fsl,mu.yaml | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Documentation/devicetree/bindings/mailbox/fsl,mu.yaml b/Documentation/devicetree/bindings/mailbox/fsl,mu.yaml
index f865b806ae6a..6d056d5e16bf 100644
--- a/Documentation/devicetree/bindings/mailbox/fsl,mu.yaml
+++ b/Documentation/devicetree/bindings/mailbox/fsl,mu.yaml
@@ -30,6 +30,9 @@ properties:
       - const: fsl,imx8-mu-scu
       - const: fsl,imx8-mu-seco
       - const: fsl,imx8ulp-mu-s4
+      - items:
+          - const: fsl,imx93-mu
+          - const: fsl,imx8ulp-mu
       - items:
           - enum:
               - fsl,imx7s-mu
-- 
2.25.1

[PATCH V6 1/5] dt-bindings: mailbox: imx-mu: add i.MX93 MU

[Peng Fan (OSS)]

From: Peng Fan <peng.fan@nxp.com>

Add bindings for i.MX93 MU which derived from i.MX8ULP

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
---
 Documentation/devicetree/bindings/mailbox/fsl,mu.yaml | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Documentation/devicetree/bindings/mailbox/fsl,mu.yaml b/Documentation/devicetree/bindings/mailbox/fsl,mu.yaml
index f865b806ae6a..6d056d5e16bf 100644
--- a/Documentation/devicetree/bindings/mailbox/fsl,mu.yaml
+++ b/Documentation/devicetree/bindings/mailbox/fsl,mu.yaml
@@ -30,6 +30,9 @@ properties:
       - const: fsl,imx8-mu-scu
       - const: fsl,imx8-mu-seco
       - const: fsl,imx8ulp-mu-s4
+      - items:
+          - const: fsl,imx93-mu
+          - const: fsl,imx8ulp-mu
       - items:
           - enum:
               - fsl,imx7s-mu
-- 
2.25.1


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[PATCH V6 2/5] dt-bindings: mailbox: imx-mu: add i.MX93 S4 MU support

[Peng Fan (OSS)]

From: Peng Fan <peng.fan@nxp.com>

Similar to i.MX8ULP S4 MU, i.MX93 MU is dedicated for communication
between Sentinel and Cortex-A cores from hardware design, it could not be
reused for other purpose.

However i.MX93 S4 MU use separate tx/rx interrupt, so update
interrupts and add interrupt-names property.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
---
 .../devicetree/bindings/mailbox/fsl,mu.yaml   | 31 ++++++++++++++++++-
 1 file changed, 30 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/mailbox/fsl,mu.yaml b/Documentation/devicetree/bindings/mailbox/fsl,mu.yaml
index 6d056d5e16bf..7a86e7926dd2 100644
--- a/Documentation/devicetree/bindings/mailbox/fsl,mu.yaml
+++ b/Documentation/devicetree/bindings/mailbox/fsl,mu.yaml
@@ -29,6 +29,7 @@ properties:
       - const: fsl,imx8ulp-mu
       - const: fsl,imx8-mu-scu
       - const: fsl,imx8-mu-seco
+      - const: fsl,imx93-mu-s4
       - const: fsl,imx8ulp-mu-s4
       - items:
           - const: fsl,imx93-mu
@@ -55,7 +56,14 @@ properties:
     maxItems: 1
 
   interrupts:
-    maxItems: 1
+    minItems: 1
+    maxItems: 2
+
+  interrupt-names:
+    minItems: 1
+    items:
+      - const: tx
+      - const: rx
 
   "#mbox-cells":
     description: |
@@ -90,6 +98,27 @@ required:
   - interrupts
   - "#mbox-cells"
 
+allOf:
+  - if:
+      properties:
+        compatible:
+          enum:
+            - fsl,imx93-mu-s4
+    then:
+      properties:
+        interrupt-names:
+          minItems: 2
+        interrupts:
+          minItems: 2
+
+    else:
+      properties:
+        interrupts:
+          maxItems: 1
+      not:
+        required:
+          - interrupt-names
+
 additionalProperties: false
 
 examples:
-- 
2.25.1

[PATCH V6 2/5] dt-bindings: mailbox: imx-mu: add i.MX93 S4 MU support

[Peng Fan (OSS)]

From: Peng Fan <peng.fan@nxp.com>

Similar to i.MX8ULP S4 MU, i.MX93 MU is dedicated for communication
between Sentinel and Cortex-A cores from hardware design, it could not be
reused for other purpose.

However i.MX93 S4 MU use separate tx/rx interrupt, so update
interrupts and add interrupt-names property.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
---
 .../devicetree/bindings/mailbox/fsl,mu.yaml   | 31 ++++++++++++++++++-
 1 file changed, 30 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/mailbox/fsl,mu.yaml b/Documentation/devicetree/bindings/mailbox/fsl,mu.yaml
index 6d056d5e16bf..7a86e7926dd2 100644
--- a/Documentation/devicetree/bindings/mailbox/fsl,mu.yaml
+++ b/Documentation/devicetree/bindings/mailbox/fsl,mu.yaml
@@ -29,6 +29,7 @@ properties:
       - const: fsl,imx8ulp-mu
       - const: fsl,imx8-mu-scu
       - const: fsl,imx8-mu-seco
+      - const: fsl,imx93-mu-s4
       - const: fsl,imx8ulp-mu-s4
       - items:
           - const: fsl,imx93-mu
@@ -55,7 +56,14 @@ properties:
     maxItems: 1
 
   interrupts:
-    maxItems: 1
+    minItems: 1
+    maxItems: 2
+
+  interrupt-names:
+    minItems: 1
+    items:
+      - const: tx
+      - const: rx
 
   "#mbox-cells":
     description: |
@@ -90,6 +98,27 @@ required:
   - interrupts
   - "#mbox-cells"
 
+allOf:
+  - if:
+      properties:
+        compatible:
+          enum:
+            - fsl,imx93-mu-s4
+    then:
+      properties:
+        interrupt-names:
+          minItems: 2
+        interrupts:
+          minItems: 2
+
+    else:
+      properties:
+        interrupts:
+          maxItems: 1
+      not:
+        required:
+          - interrupt-names
+
 additionalProperties: false
 
 examples:
-- 
2.25.1


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[PATCH V6 3/5] mailbox: imx: extend irq to an array

[Peng Fan (OSS)]

From: Peng Fan <peng.fan@nxp.com>

To i.MX93 S401 MU, there are two interrupts: rx full and tx empty.
So extend irq to an array to prepare i.MX93 S401 MU support.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
---
 drivers/mailbox/imx-mailbox.c | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/drivers/mailbox/imx-mailbox.c b/drivers/mailbox/imx-mailbox.c
index cd011ca5707e..03699843a6fd 100644
--- a/drivers/mailbox/imx-mailbox.c
+++ b/drivers/mailbox/imx-mailbox.c
@@ -80,7 +80,7 @@ struct imx_mu_priv {
 	struct imx_mu_con_priv  con_priv[IMX_MU_CHANS];
 	const struct imx_mu_dcfg	*dcfg;
 	struct clk		*clk;
-	int			irq;
+	int			irq[IMX_MU_CHANS];
 	bool			suspend;
 
 	u32 xcr[4];
@@ -551,11 +551,11 @@ static int imx_mu_startup(struct mbox_chan *chan)
 	if (!priv->dev->pm_domain)
 		irq_flag |= IRQF_NO_SUSPEND;
 
-	ret = request_irq(priv->irq, imx_mu_isr, irq_flag,
+	ret = request_irq(priv->irq[0], imx_mu_isr, irq_flag,
 			  cp->irq_desc, chan);
 	if (ret) {
 		dev_err(priv->dev,
-			"Unable to acquire IRQ %d\n", priv->irq);
+			"Unable to acquire IRQ %d\n", priv->irq[0]);
 		return ret;
 	}
 
@@ -598,7 +598,7 @@ static void imx_mu_shutdown(struct mbox_chan *chan)
 		break;
 	}
 
-	free_irq(priv->irq, chan);
+	free_irq(priv->irq[0], chan);
 	pm_runtime_put_sync(priv->dev);
 }
 
@@ -762,9 +762,9 @@ static int imx_mu_probe(struct platform_device *pdev)
 	if (IS_ERR(priv->base))
 		return PTR_ERR(priv->base);
 
-	priv->irq = platform_get_irq(pdev, 0);
-	if (priv->irq < 0)
-		return priv->irq;
+	priv->irq[0] = platform_get_irq(pdev, 0);
+	if (priv->irq[0] < 0)
+		return priv->irq[0];
 
 	dcfg = of_device_get_match_data(dev);
 	if (!dcfg)
-- 
2.25.1

[PATCH V6 3/5] mailbox: imx: extend irq to an array

[Peng Fan (OSS)]

From: Peng Fan <peng.fan@nxp.com>

To i.MX93 S401 MU, there are two interrupts: rx full and tx empty.
So extend irq to an array to prepare i.MX93 S401 MU support.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
---
 drivers/mailbox/imx-mailbox.c | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/drivers/mailbox/imx-mailbox.c b/drivers/mailbox/imx-mailbox.c
index cd011ca5707e..03699843a6fd 100644
--- a/drivers/mailbox/imx-mailbox.c
+++ b/drivers/mailbox/imx-mailbox.c
@@ -80,7 +80,7 @@ struct imx_mu_priv {
 	struct imx_mu_con_priv  con_priv[IMX_MU_CHANS];
 	const struct imx_mu_dcfg	*dcfg;
 	struct clk		*clk;
-	int			irq;
+	int			irq[IMX_MU_CHANS];
 	bool			suspend;
 
 	u32 xcr[4];
@@ -551,11 +551,11 @@ static int imx_mu_startup(struct mbox_chan *chan)
 	if (!priv->dev->pm_domain)
 		irq_flag |= IRQF_NO_SUSPEND;
 
-	ret = request_irq(priv->irq, imx_mu_isr, irq_flag,
+	ret = request_irq(priv->irq[0], imx_mu_isr, irq_flag,
 			  cp->irq_desc, chan);
 	if (ret) {
 		dev_err(priv->dev,
-			"Unable to acquire IRQ %d\n", priv->irq);
+			"Unable to acquire IRQ %d\n", priv->irq[0]);
 		return ret;
 	}
 
@@ -598,7 +598,7 @@ static void imx_mu_shutdown(struct mbox_chan *chan)
 		break;
 	}
 
-	free_irq(priv->irq, chan);
+	free_irq(priv->irq[0], chan);
 	pm_runtime_put_sync(priv->dev);
 }
 
@@ -762,9 +762,9 @@ static int imx_mu_probe(struct platform_device *pdev)
 	if (IS_ERR(priv->base))
 		return PTR_ERR(priv->base);
 
-	priv->irq = platform_get_irq(pdev, 0);
-	if (priv->irq < 0)
-		return priv->irq;
+	priv->irq[0] = platform_get_irq(pdev, 0);
+	if (priv->irq[0] < 0)
+		return priv->irq[0];
 
 	dcfg = of_device_get_match_data(dev);
 	if (!dcfg)
-- 
2.25.1


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[PATCH V6 4/5] mailbox: imx: support dual interrupts

[Peng Fan (OSS)]

From: Peng Fan <peng.fan@nxp.com>

i.MX93 S401 MU support two interrupts: tx empty and rx full.

 - Introduce a new flag IMX_MU_V2_IRQ for the dual interrupt case
 - Update author and Copyright

Signed-off-by: Peng Fan <peng.fan@nxp.com>
---
 drivers/mailbox/imx-mailbox.c | 37 ++++++++++++++++++++++++++---------
 1 file changed, 28 insertions(+), 9 deletions(-)

diff --git a/drivers/mailbox/imx-mailbox.c b/drivers/mailbox/imx-mailbox.c
index 03699843a6fd..4bc59a6cad20 100644
--- a/drivers/mailbox/imx-mailbox.c
+++ b/drivers/mailbox/imx-mailbox.c
@@ -1,6 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
  * Copyright (c) 2018 Pengutronix, Oleksij Rempel <o.rempel@pengutronix.de>
+ * Copyright 2022 NXP, Peng Fan <peng.fan@nxp.com>
  */
 
 #include <linux/clk.h>
@@ -28,6 +29,7 @@
 #define IMX_MU_SECO_TX_TOUT (msecs_to_jiffies(3000))
 #define IMX_MU_SECO_RX_TOUT (msecs_to_jiffies(3000))
 
+/* Please not change TX & RX */
 enum imx_mu_chan_type {
 	IMX_MU_TYPE_TX,		/* Tx */
 	IMX_MU_TYPE_RX,		/* Rx */
@@ -92,6 +94,7 @@ enum imx_mu_type {
 	IMX_MU_V1,
 	IMX_MU_V2 = BIT(1),
 	IMX_MU_V2_S4 = BIT(15),
+	IMX_MU_V2_IRQ = BIT(16),
 };
 
 struct imx_mu_dcfg {
@@ -536,7 +539,8 @@ static int imx_mu_startup(struct mbox_chan *chan)
 {
 	struct imx_mu_priv *priv = to_imx_mu_priv(chan->mbox);
 	struct imx_mu_con_priv *cp = chan->con_priv;
-	unsigned long irq_flag = IRQF_SHARED;
+	unsigned long irq_flag = 0;
+	int irq;
 	int ret;
 
 	pm_runtime_get_sync(priv->dev);
@@ -551,11 +555,16 @@ static int imx_mu_startup(struct mbox_chan *chan)
 	if (!priv->dev->pm_domain)
 		irq_flag |= IRQF_NO_SUSPEND;
 
-	ret = request_irq(priv->irq[0], imx_mu_isr, irq_flag,
-			  cp->irq_desc, chan);
+	if (priv->dcfg->type & IMX_MU_V2_IRQ) {
+		irq = priv->irq[cp->type];
+	} else {
+		irq = priv->irq[0];
+		irq_flag |= IRQF_SHARED;
+	}
+
+	ret = request_irq(irq, imx_mu_isr, irq_flag, cp->irq_desc, chan);
 	if (ret) {
-		dev_err(priv->dev,
-			"Unable to acquire IRQ %d\n", priv->irq[0]);
+		dev_err(priv->dev, "Unable to acquire IRQ %d\n", irq);
 		return ret;
 	}
 
@@ -762,14 +771,23 @@ static int imx_mu_probe(struct platform_device *pdev)
 	if (IS_ERR(priv->base))
 		return PTR_ERR(priv->base);
 
-	priv->irq[0] = platform_get_irq(pdev, 0);
-	if (priv->irq[0] < 0)
-		return priv->irq[0];
-
 	dcfg = of_device_get_match_data(dev);
 	if (!dcfg)
 		return -EINVAL;
 	priv->dcfg = dcfg;
+	if (priv->dcfg->type & IMX_MU_V2_IRQ) {
+		priv->irq[IMX_MU_TYPE_TX] = platform_get_irq_byname(pdev, "tx");
+		if (priv->irq[IMX_MU_TYPE_TX] < 0)
+			return priv->irq[IMX_MU_TYPE_TX];
+		priv->irq[IMX_MU_TYPE_RX] = platform_get_irq_byname(pdev, "rx");
+		if (priv->irq[IMX_MU_TYPE_RX] < 0)
+			return priv->irq[IMX_MU_TYPE_RX];
+	} else {
+		priv->irq[0] = platform_get_irq(pdev, 0);
+		if (priv->irq[0] < 0)
+			return priv->irq[0];
+
+	}
 
 	if (priv->dcfg->type & IMX_MU_V2_S4)
 		size = sizeof(struct imx_s4_rpc_msg_max);
@@ -1001,5 +1019,6 @@ static struct platform_driver imx_mu_driver = {
 module_platform_driver(imx_mu_driver);
 
 MODULE_AUTHOR("Oleksij Rempel <o.rempel@pengutronix.de>");
+MODULE_AUTHOR("Peng Fan <peng.fan@nxp.com>");
 MODULE_DESCRIPTION("Message Unit driver for i.MX");
 MODULE_LICENSE("GPL v2");
-- 
2.25.1

[PATCH V6 4/5] mailbox: imx: support dual interrupts

[Peng Fan (OSS)]

From: Peng Fan <peng.fan@nxp.com>

i.MX93 S401 MU support two interrupts: tx empty and rx full.

 - Introduce a new flag IMX_MU_V2_IRQ for the dual interrupt case
 - Update author and Copyright

Signed-off-by: Peng Fan <peng.fan@nxp.com>
---
 drivers/mailbox/imx-mailbox.c | 37 ++++++++++++++++++++++++++---------
 1 file changed, 28 insertions(+), 9 deletions(-)

diff --git a/drivers/mailbox/imx-mailbox.c b/drivers/mailbox/imx-mailbox.c
index 03699843a6fd..4bc59a6cad20 100644
--- a/drivers/mailbox/imx-mailbox.c
+++ b/drivers/mailbox/imx-mailbox.c
@@ -1,6 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
  * Copyright (c) 2018 Pengutronix, Oleksij Rempel <o.rempel@pengutronix.de>
+ * Copyright 2022 NXP, Peng Fan <peng.fan@nxp.com>
  */
 
 #include <linux/clk.h>
@@ -28,6 +29,7 @@
 #define IMX_MU_SECO_TX_TOUT (msecs_to_jiffies(3000))
 #define IMX_MU_SECO_RX_TOUT (msecs_to_jiffies(3000))
 
+/* Please not change TX & RX */
 enum imx_mu_chan_type {
 	IMX_MU_TYPE_TX,		/* Tx */
 	IMX_MU_TYPE_RX,		/* Rx */
@@ -92,6 +94,7 @@ enum imx_mu_type {
 	IMX_MU_V1,
 	IMX_MU_V2 = BIT(1),
 	IMX_MU_V2_S4 = BIT(15),
+	IMX_MU_V2_IRQ = BIT(16),
 };
 
 struct imx_mu_dcfg {
@@ -536,7 +539,8 @@ static int imx_mu_startup(struct mbox_chan *chan)
 {
 	struct imx_mu_priv *priv = to_imx_mu_priv(chan->mbox);
 	struct imx_mu_con_priv *cp = chan->con_priv;
-	unsigned long irq_flag = IRQF_SHARED;
+	unsigned long irq_flag = 0;
+	int irq;
 	int ret;
 
 	pm_runtime_get_sync(priv->dev);
@@ -551,11 +555,16 @@ static int imx_mu_startup(struct mbox_chan *chan)
 	if (!priv->dev->pm_domain)
 		irq_flag |= IRQF_NO_SUSPEND;
 
-	ret = request_irq(priv->irq[0], imx_mu_isr, irq_flag,
-			  cp->irq_desc, chan);
+	if (priv->dcfg->type & IMX_MU_V2_IRQ) {
+		irq = priv->irq[cp->type];
+	} else {
+		irq = priv->irq[0];
+		irq_flag |= IRQF_SHARED;
+	}
+
+	ret = request_irq(irq, imx_mu_isr, irq_flag, cp->irq_desc, chan);
 	if (ret) {
-		dev_err(priv->dev,
-			"Unable to acquire IRQ %d\n", priv->irq[0]);
+		dev_err(priv->dev, "Unable to acquire IRQ %d\n", irq);
 		return ret;
 	}
 
@@ -762,14 +771,23 @@ static int imx_mu_probe(struct platform_device *pdev)
 	if (IS_ERR(priv->base))
 		return PTR_ERR(priv->base);
 
-	priv->irq[0] = platform_get_irq(pdev, 0);
-	if (priv->irq[0] < 0)
-		return priv->irq[0];
-
 	dcfg = of_device_get_match_data(dev);
 	if (!dcfg)
 		return -EINVAL;
 	priv->dcfg = dcfg;
+	if (priv->dcfg->type & IMX_MU_V2_IRQ) {
+		priv->irq[IMX_MU_TYPE_TX] = platform_get_irq_byname(pdev, "tx");
+		if (priv->irq[IMX_MU_TYPE_TX] < 0)
+			return priv->irq[IMX_MU_TYPE_TX];
+		priv->irq[IMX_MU_TYPE_RX] = platform_get_irq_byname(pdev, "rx");
+		if (priv->irq[IMX_MU_TYPE_RX] < 0)
+			return priv->irq[IMX_MU_TYPE_RX];
+	} else {
+		priv->irq[0] = platform_get_irq(pdev, 0);
+		if (priv->irq[0] < 0)
+			return priv->irq[0];
+
+	}
 
 	if (priv->dcfg->type & IMX_MU_V2_S4)
 		size = sizeof(struct imx_s4_rpc_msg_max);
@@ -1001,5 +1019,6 @@ static struct platform_driver imx_mu_driver = {
 module_platform_driver(imx_mu_driver);
 
 MODULE_AUTHOR("Oleksij Rempel <o.rempel@pengutronix.de>");
+MODULE_AUTHOR("Peng Fan <peng.fan@nxp.com>");
 MODULE_DESCRIPTION("Message Unit driver for i.MX");
 MODULE_LICENSE("GPL v2");
-- 
2.25.1


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[PATCH V6 5/5] mailbox: imx: support i.MX93 S401 MU

[Peng Fan (OSS)]

From: Peng Fan <peng.fan@nxp.com>

Add i.MX93 S401 MU cfg

Signed-off-by: Peng Fan <peng.fan@nxp.com>
---
 drivers/mailbox/imx-mailbox.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/drivers/mailbox/imx-mailbox.c b/drivers/mailbox/imx-mailbox.c
index 4bc59a6cad20..dcbf554aa96a 100644
--- a/drivers/mailbox/imx-mailbox.c
+++ b/drivers/mailbox/imx-mailbox.c
@@ -908,6 +908,17 @@ static const struct imx_mu_dcfg imx_mu_cfg_imx8ulp_s4 = {
 	.xCR	= {0x110, 0x114, 0x120, 0x128},
 };
 
+static const struct imx_mu_dcfg imx_mu_cfg_imx93_s4 = {
+	.tx	= imx_mu_specific_tx,
+	.rx	= imx_mu_specific_rx,
+	.init	= imx_mu_init_specific,
+	.type	= IMX_MU_V2 | IMX_MU_V2_S4 | IMX_MU_V2_IRQ,
+	.xTR	= 0x200,
+	.xRR	= 0x280,
+	.xSR	= {0xC, 0x118, 0x124, 0x12C},
+	.xCR	= {0x110, 0x114, 0x120, 0x128},
+};
+
 static const struct imx_mu_dcfg imx_mu_cfg_imx8_scu = {
 	.tx	= imx_mu_specific_tx,
 	.rx	= imx_mu_specific_rx,
@@ -935,6 +946,7 @@ static const struct of_device_id imx_mu_dt_ids[] = {
 	{ .compatible = "fsl,imx6sx-mu", .data = &imx_mu_cfg_imx6sx },
 	{ .compatible = "fsl,imx8ulp-mu", .data = &imx_mu_cfg_imx8ulp },
 	{ .compatible = "fsl,imx8ulp-mu-s4", .data = &imx_mu_cfg_imx8ulp_s4 },
+	{ .compatible = "fsl,imx93-mu-s4", .data = &imx_mu_cfg_imx93_s4 },
 	{ .compatible = "fsl,imx8-mu-scu", .data = &imx_mu_cfg_imx8_scu },
 	{ .compatible = "fsl,imx8-mu-seco", .data = &imx_mu_cfg_imx8_seco },
 	{ },
-- 
2.25.1

[PATCH V6 5/5] mailbox: imx: support i.MX93 S401 MU

[Peng Fan (OSS)]

From: Peng Fan <peng.fan@nxp.com>

Add i.MX93 S401 MU cfg

Signed-off-by: Peng Fan <peng.fan@nxp.com>
---
 drivers/mailbox/imx-mailbox.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/drivers/mailbox/imx-mailbox.c b/drivers/mailbox/imx-mailbox.c
index 4bc59a6cad20..dcbf554aa96a 100644
--- a/drivers/mailbox/imx-mailbox.c
+++ b/drivers/mailbox/imx-mailbox.c
@@ -908,6 +908,17 @@ static const struct imx_mu_dcfg imx_mu_cfg_imx8ulp_s4 = {
 	.xCR	= {0x110, 0x114, 0x120, 0x128},
 };
 
+static const struct imx_mu_dcfg imx_mu_cfg_imx93_s4 = {
+	.tx	= imx_mu_specific_tx,
+	.rx	= imx_mu_specific_rx,
+	.init	= imx_mu_init_specific,
+	.type	= IMX_MU_V2 | IMX_MU_V2_S4 | IMX_MU_V2_IRQ,
+	.xTR	= 0x200,
+	.xRR	= 0x280,
+	.xSR	= {0xC, 0x118, 0x124, 0x12C},
+	.xCR	= {0x110, 0x114, 0x120, 0x128},
+};
+
 static const struct imx_mu_dcfg imx_mu_cfg_imx8_scu = {
 	.tx	= imx_mu_specific_tx,
 	.rx	= imx_mu_specific_rx,
@@ -935,6 +946,7 @@ static const struct of_device_id imx_mu_dt_ids[] = {
 	{ .compatible = "fsl,imx6sx-mu", .data = &imx_mu_cfg_imx6sx },
 	{ .compatible = "fsl,imx8ulp-mu", .data = &imx_mu_cfg_imx8ulp },
 	{ .compatible = "fsl,imx8ulp-mu-s4", .data = &imx_mu_cfg_imx8ulp_s4 },
+	{ .compatible = "fsl,imx93-mu-s4", .data = &imx_mu_cfg_imx93_s4 },
 	{ .compatible = "fsl,imx8-mu-scu", .data = &imx_mu_cfg_imx8_scu },
 	{ .compatible = "fsl,imx8-mu-seco", .data = &imx_mu_cfg_imx8_seco },
 	{ },
-- 
2.25.1


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Re: [PATCH V6 4/5] mailbox: imx: support dual interrupts

[Jassi Brar]

Hi,

On Tue, Mar 1, 2022 at 8:23 PM Peng Fan (OSS) <peng.fan@oss.nxp.com> wrote:
>
> From: Peng Fan <peng.fan@nxp.com>
>
> i.MX93 S401 MU support two interrupts: tx empty and rx full.
>
>  - Introduce a new flag IMX_MU_V2_IRQ for the dual interrupt case
>  - Update author and Copyright
>
Copyright update is fair.
However, I am not sure adding an extra interrupt warrants
co-authorship, otherwise people submit far bigger changes to drivers.
And you didn't even CC the original author Oleksij Rempel. At least
please seek his ACK.

> diff --git a/drivers/mailbox/imx-mailbox.c b/drivers/mailbox/imx-mailbox.c
> index 03699843a6fd..4bc59a6cad20 100644
> --- a/drivers/mailbox/imx-mailbox.c
> +++ b/drivers/mailbox/imx-mailbox.c
....
>
> +/* Please not change TX & RX */
>  enum imx_mu_chan_type {
>         IMX_MU_TYPE_TX,         /* Tx */
>         IMX_MU_TYPE_RX,         /* Rx */
>
You want to hard-code the values to make it clearer
      IMX_MU_TYPE_TX = 0,
      IMX_MU_TYPE_RX = 1,


> @@ -536,7 +539,8 @@ static int imx_mu_startup(struct mbox_chan *chan)
>  {
>         struct imx_mu_priv *priv = to_imx_mu_priv(chan->mbox);
>         struct imx_mu_con_priv *cp = chan->con_priv;
> -       unsigned long irq_flag = IRQF_SHARED;
> +       unsigned long irq_flag = 0;
> +       int irq;
>         int ret;
>
>         pm_runtime_get_sync(priv->dev);
> @@ -551,11 +555,16 @@ static int imx_mu_startup(struct mbox_chan *chan)
>         if (!priv->dev->pm_domain)
>                 irq_flag |= IRQF_NO_SUSPEND;
>
> -       ret = request_irq(priv->irq[0], imx_mu_isr, irq_flag,
> -                         cp->irq_desc, chan);
> +       if (priv->dcfg->type & IMX_MU_V2_IRQ) {
> +               irq = priv->irq[cp->type];
> +       } else {
> +               irq = priv->irq[0];
>
Please use some verbose define instead of the magic 0.

Thanks.

Re: [PATCH V6 4/5] mailbox: imx: support dual interrupts

[Jassi Brar]

Hi,

On Tue, Mar 1, 2022 at 8:23 PM Peng Fan (OSS) <peng.fan@oss.nxp.com> wrote:
>
> From: Peng Fan <peng.fan@nxp.com>
>
> i.MX93 S401 MU support two interrupts: tx empty and rx full.
>
>  - Introduce a new flag IMX_MU_V2_IRQ for the dual interrupt case
>  - Update author and Copyright
>
Copyright update is fair.
However, I am not sure adding an extra interrupt warrants
co-authorship, otherwise people submit far bigger changes to drivers.
And you didn't even CC the original author Oleksij Rempel. At least
please seek his ACK.

> diff --git a/drivers/mailbox/imx-mailbox.c b/drivers/mailbox/imx-mailbox.c
> index 03699843a6fd..4bc59a6cad20 100644
> --- a/drivers/mailbox/imx-mailbox.c
> +++ b/drivers/mailbox/imx-mailbox.c
....
>
> +/* Please not change TX & RX */
>  enum imx_mu_chan_type {
>         IMX_MU_TYPE_TX,         /* Tx */
>         IMX_MU_TYPE_RX,         /* Rx */
>
You want to hard-code the values to make it clearer
      IMX_MU_TYPE_TX = 0,
      IMX_MU_TYPE_RX = 1,


> @@ -536,7 +539,8 @@ static int imx_mu_startup(struct mbox_chan *chan)
>  {
>         struct imx_mu_priv *priv = to_imx_mu_priv(chan->mbox);
>         struct imx_mu_con_priv *cp = chan->con_priv;
> -       unsigned long irq_flag = IRQF_SHARED;
> +       unsigned long irq_flag = 0;
> +       int irq;
>         int ret;
>
>         pm_runtime_get_sync(priv->dev);
> @@ -551,11 +555,16 @@ static int imx_mu_startup(struct mbox_chan *chan)
>         if (!priv->dev->pm_domain)
>                 irq_flag |= IRQF_NO_SUSPEND;
>
> -       ret = request_irq(priv->irq[0], imx_mu_isr, irq_flag,
> -                         cp->irq_desc, chan);
> +       if (priv->dcfg->type & IMX_MU_V2_IRQ) {
> +               irq = priv->irq[cp->type];
> +       } else {
> +               irq = priv->irq[0];
>
Please use some verbose define instead of the magic 0.

Thanks.

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RE: [PATCH V6 4/5] mailbox: imx: support dual interrupts

[Peng Fan]

> Subject: Re: [PATCH V6 4/5] mailbox: imx: support dual interrupts
> 
> Hi,
> 
> On Tue, Mar 1, 2022 at 8:23 PM Peng Fan (OSS) <peng.fan@oss.nxp.com>
> wrote:
> >
> > From: Peng Fan <peng.fan@nxp.com>
> >
> > i.MX93 S401 MU support two interrupts: tx empty and rx full.
> >
> >  - Introduce a new flag IMX_MU_V2_IRQ for the dual interrupt case
> >  - Update author and Copyright
> >
> Copyright update is fair.
> However, I am not sure adding an extra interrupt warrants co-authorship,
> otherwise people submit far bigger changes to drivers.

I just thought I did lots of changes to this driver and just add my authorship
here. That's fine, I'll drop.

> And you didn't even CC the original author Oleksij Rempel. At least please
> seek his ACK.

I just use scripts/get_maintainers script, will add Oleksij.

> 
> > diff --git a/drivers/mailbox/imx-mailbox.c
> > b/drivers/mailbox/imx-mailbox.c index 03699843a6fd..4bc59a6cad20
> > 100644
> > --- a/drivers/mailbox/imx-mailbox.c
> > +++ b/drivers/mailbox/imx-mailbox.c
> ....
> >
> > +/* Please not change TX & RX */
> >  enum imx_mu_chan_type {
> >         IMX_MU_TYPE_TX,         /* Tx */
> >         IMX_MU_TYPE_RX,         /* Rx */
> >
> You want to hard-code the values to make it clearer
>       IMX_MU_TYPE_TX = 0,
>       IMX_MU_TYPE_RX = 1,
> 
> 
> > @@ -536,7 +539,8 @@ static int imx_mu_startup(struct mbox_chan *chan)
> > {
> >         struct imx_mu_priv *priv = to_imx_mu_priv(chan->mbox);
> >         struct imx_mu_con_priv *cp = chan->con_priv;
> > -       unsigned long irq_flag = IRQF_SHARED;
> > +       unsigned long irq_flag = 0;
> > +       int irq;
> >         int ret;
> >
> >         pm_runtime_get_sync(priv->dev); @@ -551,11 +555,16 @@
> static
> > int imx_mu_startup(struct mbox_chan *chan)
> >         if (!priv->dev->pm_domain)
> >                 irq_flag |= IRQF_NO_SUSPEND;
> >
> > -       ret = request_irq(priv->irq[0], imx_mu_isr, irq_flag,
> > -                         cp->irq_desc, chan);
> > +       if (priv->dcfg->type & IMX_MU_V2_IRQ) {
> > +               irq = priv->irq[cp->type];
> > +       } else {
> > +               irq = priv->irq[0];
> >
> Please use some verbose define instead of the magic 0.

Fix in V7.

Thanks,
Peng.

> 
> Thanks.

RE: [PATCH V6 4/5] mailbox: imx: support dual interrupts

[Peng Fan]

> Subject: Re: [PATCH V6 4/5] mailbox: imx: support dual interrupts
> 
> Hi,
> 
> On Tue, Mar 1, 2022 at 8:23 PM Peng Fan (OSS) <peng.fan@oss.nxp.com>
> wrote:
> >
> > From: Peng Fan <peng.fan@nxp.com>
> >
> > i.MX93 S401 MU support two interrupts: tx empty and rx full.
> >
> >  - Introduce a new flag IMX_MU_V2_IRQ for the dual interrupt case
> >  - Update author and Copyright
> >
> Copyright update is fair.
> However, I am not sure adding an extra interrupt warrants co-authorship,
> otherwise people submit far bigger changes to drivers.

I just thought I did lots of changes to this driver and just add my authorship
here. That's fine, I'll drop.

> And you didn't even CC the original author Oleksij Rempel. At least please
> seek his ACK.

I just use scripts/get_maintainers script, will add Oleksij.

> 
> > diff --git a/drivers/mailbox/imx-mailbox.c
> > b/drivers/mailbox/imx-mailbox.c index 03699843a6fd..4bc59a6cad20
> > 100644
> > --- a/drivers/mailbox/imx-mailbox.c
> > +++ b/drivers/mailbox/imx-mailbox.c
> ....
> >
> > +/* Please not change TX & RX */
> >  enum imx_mu_chan_type {
> >         IMX_MU_TYPE_TX,         /* Tx */
> >         IMX_MU_TYPE_RX,         /* Rx */
> >
> You want to hard-code the values to make it clearer
>       IMX_MU_TYPE_TX = 0,
>       IMX_MU_TYPE_RX = 1,
> 
> 
> > @@ -536,7 +539,8 @@ static int imx_mu_startup(struct mbox_chan *chan)
> > {
> >         struct imx_mu_priv *priv = to_imx_mu_priv(chan->mbox);
> >         struct imx_mu_con_priv *cp = chan->con_priv;
> > -       unsigned long irq_flag = IRQF_SHARED;
> > +       unsigned long irq_flag = 0;
> > +       int irq;
> >         int ret;
> >
> >         pm_runtime_get_sync(priv->dev); @@ -551,11 +555,16 @@
> static
> > int imx_mu_startup(struct mbox_chan *chan)
> >         if (!priv->dev->pm_domain)
> >                 irq_flag |= IRQF_NO_SUSPEND;
> >
> > -       ret = request_irq(priv->irq[0], imx_mu_isr, irq_flag,
> > -                         cp->irq_desc, chan);
> > +       if (priv->dcfg->type & IMX_MU_V2_IRQ) {
> > +               irq = priv->irq[cp->type];
> > +       } else {
> > +               irq = priv->irq[0];
> >
> Please use some verbose define instead of the magic 0.

Fix in V7.

Thanks,
Peng.

> 
> Thanks.
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