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SubjectRe: [PATCH v9 02/13] dt-bindings: media: nxp, imx8mq-vpu: Update the bindings for G2 support
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Le 29/11/2021 à 21:13, Adam Ford a écrit :
> On Wed, Apr 7, 2021 at 2:37 AM Benjamin Gaignard
> <benjamin.gaignard@collabora.com> 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@collabora.com>
>> Reviewed-by: Rob Herring <robh@kernel.org>
>> Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
> 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
>>
>>
>> _______________________________________________
>> linux-arm-kernel mailing list
>> linux-arm-kernel@lists.infradead.org
>> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

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