[PATCH v9 02/13] dt-bindings: media: nxp, imx8mq-vpu: Update the bindings for G2 support

Benjamin Gaignard benjamin.gaignard at collabora.com
Wed Apr 7 07:35:23 UTC 2021


Introducing the G2 hevc video decoder requires modifications of the bindings to allow
one node per VPU.

VPUs share one hardware control block which is provided as a phandle on
a syscon.
Each node has now one reg and one interrupt.
Add a compatible for G2 hardware block: nxp,imx8mq-vpu-g2.

To be compatible with older DT the driver is still capable to use the 'ctrl'
reg-name even if it is deprecated now.

Signed-off-by: Benjamin Gaignard <benjamin.gaignard at collabora.com>
Reviewed-by: Rob Herring <robh at kernel.org>
Reviewed-by: Philipp Zabel <p.zabel at pengutronix.de>
---
version 9:
 - Corrections in commit message

version 7:
 - Add Rob and Philipp reviewed-by tag
 - Change syscon phandle name to nxp,imx8m-vpu-ctrl (remove 'q' to be
   usable for iMX8MM too)

version 5:
- This version doesn't break the backward compatibilty between kernel
  and DT.

 .../bindings/media/nxp,imx8mq-vpu.yaml        | 53 ++++++++++++-------
 1 file changed, 34 insertions(+), 19 deletions(-)

diff --git a/Documentation/devicetree/bindings/media/nxp,imx8mq-vpu.yaml b/Documentation/devicetree/bindings/media/nxp,imx8mq-vpu.yaml
index 762be3f96ce9..18e7d40a5f24 100644
--- a/Documentation/devicetree/bindings/media/nxp,imx8mq-vpu.yaml
+++ b/Documentation/devicetree/bindings/media/nxp,imx8mq-vpu.yaml
@@ -15,22 +15,18 @@ description:
 
 properties:
   compatible:
-    const: nxp,imx8mq-vpu
+    oneOf:
+      - const: nxp,imx8mq-vpu
+      - const: nxp,imx8mq-vpu-g2
 
   reg:
-    maxItems: 3
-
-  reg-names:
-    items:
-      - const: g1
-      - const: g2
-      - const: ctrl
+    maxItems: 1
 
   interrupts:
-    maxItems: 2
+    maxItems: 1
 
   interrupt-names:
-    items:
+    oneOf:
       - const: g1
       - const: g2
 
@@ -46,14 +42,18 @@ properties:
   power-domains:
     maxItems: 1
 
+  nxp,imx8m-vpu-ctrl:
+    description: Specifies a phandle to syscon VPU hardware control block
+    $ref: "/schemas/types.yaml#/definitions/phandle"
+
 required:
   - compatible
   - reg
-  - reg-names
   - interrupts
   - interrupt-names
   - clocks
   - clock-names
+  - nxp,imx8m-vpu-ctrl
 
 additionalProperties: false
 
@@ -62,18 +62,33 @@ examples:
         #include <dt-bindings/clock/imx8mq-clock.h>
         #include <dt-bindings/interrupt-controller/arm-gic.h>
 
-        vpu: video-codec at 38300000 {
+        vpu_ctrl: syscon at 38320000 {
+                 compatible = "nxp,imx8mq-vpu-ctrl", "syscon";
+                 reg = <0x38320000 0x10000>;
+        };
+
+        vpu_g1: video-codec at 38300000 {
                 compatible = "nxp,imx8mq-vpu";
-                reg = <0x38300000 0x10000>,
-                      <0x38310000 0x10000>,
-                      <0x38320000 0x10000>;
-                reg-names = "g1", "g2", "ctrl";
-                interrupts = <GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>,
-                             <GIC_SPI 8 IRQ_TYPE_LEVEL_HIGH>;
-                interrupt-names = "g1", "g2";
+                reg = <0x38300000 0x10000>;
+                interrupts = <GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>;
+                interrupt-names = "g1";
+                clocks = <&clk IMX8MQ_CLK_VPU_G1_ROOT>,
+                         <&clk IMX8MQ_CLK_VPU_G2_ROOT>,
+                         <&clk IMX8MQ_CLK_VPU_DEC_ROOT>;
+                clock-names = "g1", "g2", "bus";
+                power-domains = <&pgc_vpu>;
+                nxp,imx8m-vpu-ctrl = <&vpu_ctrl>;
+        };
+
+        vpu_g2: video-codec at 38310000 {
+                compatible = "nxp,imx8mq-vpu-g2";
+                reg = <0x38300000 0x10000>;
+                interrupts = <GIC_SPI 8 IRQ_TYPE_LEVEL_HIGH>;
+                interrupt-names = "g2";
                 clocks = <&clk IMX8MQ_CLK_VPU_G1_ROOT>,
                          <&clk IMX8MQ_CLK_VPU_G2_ROOT>,
                          <&clk IMX8MQ_CLK_VPU_DEC_ROOT>;
                 clock-names = "g1", "g2", "bus";
                 power-domains = <&pgc_vpu>;
+                nxp,imx8m-vpu-ctrl = <&vpu_ctrl>;
         };
-- 
2.25.1



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