Le 29/11/2021 à 21:13, Adam Ford a écrit :
On Wed, Apr 7, 2021 at 2:37 AM Benjamin Gaignard
<benjamin.gaignard@xxxxxxxxxxxxx> wrote:
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@xxxxxxxxxxxxx>
Reviewed-by: Rob Herring <robh@xxxxxxxxxx>
Reviewed-by: Philipp Zabel <p.zabel@xxxxxxxxxxxxxx>
I need to edit the yaml file to add support the imx8mm, but it doesn't
appear that this series has gone anywhere. I know there is still some
waiting on the vpu-blk-ctrl driver, but it seems like the 8mq could
split the codecs out using syscon in place of the blk-ctrl until that
driver is available. If that doesn't work, I might have to introduce
a separate yaml file for mini which could be somehow merged with the
8mq in the future. I am just not sure which way to go right now.
To summarize Lucas a have a branch here: https://git.pengutronix.de/cgit/lst/linux/log/?h=imx8mq-vpu-blk-ctrl
where he try to enable blk-ctrl for imx6mq, it is working for G1 but not for G2.
You can find the thread about that here:
https://www.spinics.net/lists/devicetree/msg450831.html
Regards,
Benjamin
adam
---
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@38300000 {
+ vpu_ctrl: syscon@38320000 {
+ compatible = "nxp,imx8mq-vpu-ctrl", "syscon";
+ reg = <0x38320000 0x10000>;
+ };
+
+ vpu_g1: video-codec@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@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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