[PATCH 0/5] drm/imagination: add support for j721e,j784s4,j722s,am62p

[PATCH 0/5] drm/imagination: add support for j721e,j784s4,j722s,am62p

[Antonios Christidis]

Hello all,

Some TI/IMG dts GPU nodes are not present upstream, while others are. This
series adds support for missing devices upstream.

Including patches ([1][2]) from Michael Walle, that did not get picked up.
That add support j722s and am62p.

In regards to the j721e patch:

The clock[3] and power[4] info was captured from docs listed below.  While
interrupt info was captured from [5], TI downstream binding in commit
6ae5ecfde2f2 ("arm64: dts: ti: k3-j721e-main: add gpu node").

In regards to the j784s4 patch:

The clock[6] and power[7] info was captured from docs listed below.  While
interrupt info was captured from [8], looking at "Interrupts (inputs)" and
"GPU_BXS464_WRAP0_GPU_SS_0_OS_IRQ_OUT_0".

[1]: https://lore.kernel.org/all/20251223124729.2482877-3-mwalle@kernel.org/
[2]: https://lore.kernel.org/all/20251223124729.2482877-4-mwalle@kernel.org/
[3]: https://downloads.ti.com/tisci/esd/latest/5_soc_doc/j721e/clocks.html#clocks-for-gpu0-gpu-0-device
[4]: https://downloads.ti.com/tisci/esd/latest/5_soc_doc/j721e/devices.html
[5]: https://git.ti.com/cgit/ti-linux-kernel/ti-linux-kernel
[6]: https://downloads.ti.com/tisci/esd/latest/5_soc_doc/j784s4/clocks.html#clocks-for-j7aep-gpu-bxs464-wrap0-gpu-ss-0-device
[7]: https://downloads.ti.com/tisci/esd/latest/5_soc_doc/j784s4/devices.html
[8]: https://www.ti.com/lit/zip/spruj52

Signed-off-by: Antonios Christidis <a-christidis@ti.com>
---
Antonios Christidis (3):
      arm64: dts: ti: k3-j721e: Add GPU node
      dt-bindings: gpu: img: Add J721e SoC specific compatible
      arm64: dts: ti: k3-j784s4: Add GPU node

Michael Walle (2):
      arm64: dts: ti: add GPU node
      clk: keystone: don't cache clock rate

 .../devicetree/bindings/gpu/img,powervr-rogue.yaml         |  7 ++++++-
 arch/arm64/boot/dts/ti/k3-am62p-j722s-common-main.dtsi     | 11 +++++++++++
 arch/arm64/boot/dts/ti/k3-j721e-main.dtsi                  | 14 ++++++++++++++
 arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi                 | 14 ++++++++++++++
 drivers/clk/keystone/sci-clk.c                             |  8 ++++++++
 5 files changed, 53 insertions(+), 1 deletion(-)
---
base-commit: 3ef088b0c5772a6f75634e54aa34f5fc0a2c041c
change-id: 20260224-gpu_dts-ab32c568d756

Best regards,
-- 
Antonios Christidis <a-christidis@ti.com>

[PATCH 1/5] arm64: dts: ti: k3-j721e: Add GPU node

[Antonios Christidis]

Add the series 8XE GPU node for j721e device tree.

Signed-off-by: Antonios Christidis <a-christidis@ti.com>
---
 arch/arm64/boot/dts/ti/k3-j721e-main.dtsi | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-j721e-main.dtsi b/arch/arm64/boot/dts/ti/k3-j721e-main.dtsi
index d5fd30a01032..be91e7a2afe5 100644
--- a/arch/arm64/boot/dts/ti/k3-j721e-main.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-j721e-main.dtsi
@@ -2624,6 +2624,20 @@ icssg1_mdio: mdio@32400 {
 		};
 	};
 
+	gpu: gpu@4e20000000 {
+		compatible = "ti,j721e-gpu", "img,img-ge8430", "img,img-rogue";
+		reg = <0x4e 0x20000000 0x00 0x80000>;
+		clocks = <&k3_clks 125 0>;
+		clock-names = "core";
+		assigned-clocks = <&k3_clks 125 0>;
+		assigned-clock-rates = <750000000>;
+		interrupts = <GIC_SPI 24 IRQ_TYPE_LEVEL_HIGH>;
+		power-domains = <&k3_pds 125 TI_SCI_PD_EXCLUSIVE>,
+				<&k3_pds 126 TI_SCI_PD_EXCLUSIVE>;
+		power-domain-names = "a", "b";
+		dma-coherent;
+	};
+
 	main_mcan0: can@2701000 {
 		compatible = "bosch,m_can";
 		reg = <0x00 0x02701000 0x00 0x200>,

-- 
2.34.1

[PATCH 2/5] dt-bindings: gpu: img: Add J721e SoC specific compatible

[Antonios Christidis]

Add J721e SoC specific compatible.

Signed-off-by: Antonios Christidis <a-christidis@ti.com>
---
 Documentation/devicetree/bindings/gpu/img,powervr-rogue.yaml | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/gpu/img,powervr-rogue.yaml b/Documentation/devicetree/bindings/gpu/img,powervr-rogue.yaml
index a1f54dbae3f3..56249d1e65aa 100644
--- a/Documentation/devicetree/bindings/gpu/img,powervr-rogue.yaml
+++ b/Documentation/devicetree/bindings/gpu/img,powervr-rogue.yaml
@@ -44,7 +44,11 @@ properties:
               - ti,j721s2-gpu
           - const: img,img-bxs-4-64
           - const: img,img-rogue
-
+      - items:
+          - enum:
+              - ti,j721e-gpu
+          - const: img,img-ge8430
+          - const: img,img-rogue
       # This legacy combination of compatible strings was introduced early on
       # before the more specific GPU identifiers were used.
       - items:
@@ -103,6 +107,7 @@ allOf:
               - ti,am62-gpu
               - ti,am62p-gpu
               - ti,j721s2-gpu
+              - ti,j721e-gpu
     then:
       properties:
         clocks:

-- 
2.34.1

Re: [PATCH 2/5] dt-bindings: gpu: img: Add J721e SoC specific compatible

[Andrew Davis]

On 2/24/26 12:09 PM, Antonios Christidis wrote:
> Add J721e SoC specific compatible.
> 
> Signed-off-by: Antonios Christidis <a-christidis@ti.com>
> ---
>   Documentation/devicetree/bindings/gpu/img,powervr-rogue.yaml | 7 ++++++-
>   1 file changed, 6 insertions(+), 1 deletion(-)
> 
> diff --git a/Documentation/devicetree/bindings/gpu/img,powervr-rogue.yaml b/Documentation/devicetree/bindings/gpu/img,powervr-rogue.yaml
> index a1f54dbae3f3..56249d1e65aa 100644
> --- a/Documentation/devicetree/bindings/gpu/img,powervr-rogue.yaml
> +++ b/Documentation/devicetree/bindings/gpu/img,powervr-rogue.yaml
> @@ -44,7 +44,11 @@ properties:
>                 - ti,j721s2-gpu
>             - const: img,img-bxs-4-64
>             - const: img,img-rogue
> -
> +      - items:
> +          - enum:
> +              - ti,j721e-gpu
> +          - const: img,img-ge8430
> +          - const: img,img-rogue

Leave the newline at the end here before the comment.

Also, binding updates need to go before you make use of them. This patch
needs to go first in the series.

Andrew

>         # This legacy combination of compatible strings was introduced early on
>         # before the more specific GPU identifiers were used.
>         - items:
> @@ -103,6 +107,7 @@ allOf:
>                 - ti,am62-gpu
>                 - ti,am62p-gpu
>                 - ti,j721s2-gpu
> +              - ti,j721e-gpu
>       then:
>         properties:
>           clocks:
> 

Re: [PATCH 2/5] dt-bindings: gpu: img: Add J721e SoC specific compatible

[Krzysztof Kozlowski]

On Tue, Feb 24, 2026 at 12:09:16PM -0600, Antonios Christidis wrote:
> Add J721e SoC specific compatible.
> 
> Signed-off-by: Antonios Christidis <a-christidis@ti.com>
> ---
>  Documentation/devicetree/bindings/gpu/img,powervr-rogue.yaml | 7 ++++++-
>  1 file changed, 6 insertions(+), 1 deletion(-)
> 
> diff --git a/Documentation/devicetree/bindings/gpu/img,powervr-rogue.yaml b/Documentation/devicetree/bindings/gpu/img,powervr-rogue.yaml
> index a1f54dbae3f3..56249d1e65aa 100644
> --- a/Documentation/devicetree/bindings/gpu/img,powervr-rogue.yaml
> +++ b/Documentation/devicetree/bindings/gpu/img,powervr-rogue.yaml
> @@ -44,7 +44,11 @@ properties:
>                - ti,j721s2-gpu
>            - const: img,img-bxs-4-64
>            - const: img,img-rogue
> -
> +      - items:
> +          - enum:
> +              - ti,j721e-gpu
> +          - const: img,img-ge8430
> +          - const: img,img-rogue
>        # This legacy combination of compatible strings was introduced early on
>        # before the more specific GPU identifiers were used.
>        - items:
> @@ -103,6 +107,7 @@ allOf:
>                - ti,am62-gpu
>                - ti,am62p-gpu
>                - ti,j721s2-gpu
> +              - ti,j721e-gpu

What about img,img-ge8430? Why this one does not have constraints?

What about all other constraints?

>      then:
>        properties:
>          clocks:

Best regards,
Krzysztof

[PATCH 3/5] arm64: dts: ti: k3-j784s4: Add GPU node

[Antonios Christidis]

Add the Series BXS GPU node for j784s4 device tree.

Signed-off-by: Antonios Christidis <a-christidis@ti.com>
---
 arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi b/arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi
index 78fcd0c40abc..ddb9385cd942 100644
--- a/arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi
@@ -137,6 +137,20 @@ serdes2: serdes@5020000 {
 		};
 	};
 
+	gpu: gpu@4e20000000 {
+		compatible = "ti,j721s2-gpu", "img,img-bxs-4-64", "img,img-rogue";
+		reg = <0x4e 0x20000000 0x00 0x80000>;
+		clocks = <&k3_clks 181 1>;
+		clock-names = "core";
+		assigned-clocks = <&k3_clks 181 1>;
+		assigned-clock-rates = <800000000>;
+		interrupts = <GIC_SPI 24 IRQ_TYPE_LEVEL_HIGH>;
+		power-domains = <&k3_pds 181 TI_SCI_PD_EXCLUSIVE>,
+			<&k3_pds 182 TI_SCI_PD_EXCLUSIVE>;
+		power-domain-names = "a", "b";
+		dma-coherent;
+	};
+
 	c71_3: dsp@67800000 {
 		compatible = "ti,j721s2-c71-dsp";
 		reg = <0x00 0x67800000 0x00 0x00080000>,

-- 
2.34.1

[PATCH 4/5] arm64: dts: ti: add GPU node

[a-christidis]

From: Michael Walle <mwalle@kernel.org>

The J722S features a BXS-4 GPU. Add the node for it.

Signed-off-by: Michael Walle <mwalle@kernel.org>
Signed-off-by: Antonios Christidis <a-christidis@ti.com>
---
 arch/arm64/boot/dts/ti/k3-am62p-j722s-common-main.dtsi | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-am62p-j722s-common-main.dtsi b/arch/arm64/boot/dts/ti/k3-am62p-j722s-common-main.dtsi
index 0e1af2a69ca2..20f7474f986b 100644
--- a/arch/arm64/boot/dts/ti/k3-am62p-j722s-common-main.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am62p-j722s-common-main.dtsi
@@ -1110,6 +1110,17 @@ dphy0: phy@30110000 {
 		status = "disabled";
 	};
 
+	gpu: gpu@fd80000 {
+		compatible = "ti,am62p-gpu", "img,img-bxs-4-64", "img,img-rogue";
+		reg = <0x00 0x0fd80000 0x00 0x80000>;
+		clocks = <&k3_clks 237 3>;
+		clock-names = "core";
+		interrupts = <GIC_SPI 241 IRQ_TYPE_LEVEL_HIGH>;
+		power-domains = <&k3_pds 237 TI_SCI_PD_EXCLUSIVE>,
+				<&k3_pds 242 TI_SCI_PD_EXCLUSIVE>;
+		power-domain-names = "a", "b";
+	};
+
 	vpu: video-codec@30210000 {
 		compatible = "ti,j721s2-wave521c", "cnm,wave521c";
 		reg = <0x00 0x30210000 0x00 0x10000>;

-- 
2.34.1

[PATCH 5/5] clk: keystone: don't cache clock rate

[a-christidis]

From: Michael Walle <mwalle@kernel.org>

The TISCI firmware will return 0 if the clock or consumer is not
enabled although there is a stored value in the firmware. IOW a call to
set rate will work but at get rate will always return 0 if the clock is
disabled.
The clk framework will try to cache the clock rate when it's requested
by a consumer. If the clock or consumer is not enabled at that point,
the cached value is 0, which is wrong. Thus, disable the cache
altogether.

Signed-off-by: Michael Walle <mwalle@kernel.org>
Reviewed-by: Kevin Hilman <khilman@baylibre.com>
Reviewed-by: Randolph Sapp <rs@ti.com>
Reviewed-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Antonios Christidis <a-christidis@ti.com>
---
 drivers/clk/keystone/sci-clk.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/clk/keystone/sci-clk.c b/drivers/clk/keystone/sci-clk.c
index 9d5071223f4c..0a1565fdbb3b 100644
--- a/drivers/clk/keystone/sci-clk.c
+++ b/drivers/clk/keystone/sci-clk.c
@@ -333,6 +333,14 @@ static int _sci_clk_build(struct sci_clk_provider *provider,
 
 	init.ops = &sci_clk_ops;
 	init.num_parents = sci_clk->num_parents;
+
+	/*
+	 * A clock rate query to the SCI firmware will return 0 if either the
+	 * clock itself is disabled or the attached device/consumer is disabled.
+	 * This makes it inherently unsuitable for the caching of the clk
+	 * framework.
+	 */
+	init.flags = CLK_GET_RATE_NOCACHE;
 	sci_clk->hw.init = &init;
 
 	ret = devm_clk_hw_register(provider->dev, &sci_clk->hw);

-- 
2.34.1

Re: [PATCH 0/5] drm/imagination: add support for j721e,j784s4,j722s,am62p

[Nishanth Menon]

On 12:09-20260224, Antonios Christidis wrote:
> ---
> Antonios Christidis (3):
>       arm64: dts: ti: k3-j721e: Add GPU node
>       dt-bindings: gpu: img: Add J721e SoC specific compatible
>       arm64: dts: ti: k3-j784s4: Add GPU node
> 
> Michael Walle (2):
>       arm64: dts: ti: add GPU node
Now that you are picking this up, please Fix the $subject.
>       clk: keystone: don't cache clock rate


Bunch of interleaved "kind of related" patches in a single series.
please do not do this.

j784s4 can go in on it's own.

j722s/am62p needs to wait for clk-cache patch to go in, but the
clk-cache patch probably needs to be submitted individually to linux-clk
mailing list for Stephen to pick up.

Please provide reference in the patch diffstat as to where the previous
version of the patch is.


Finally: j721e - please get the binding accepted through drm mailing
list, then we can see about the dts.

> 
>  .../devicetree/bindings/gpu/img,powervr-rogue.yaml         |  7 ++++++-
>  arch/arm64/boot/dts/ti/k3-am62p-j722s-common-main.dtsi     | 11 +++++++++++
>  arch/arm64/boot/dts/ti/k3-j721e-main.dtsi                  | 14 ++++++++++++++
>  arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi                 | 14 ++++++++++++++
>  drivers/clk/keystone/sci-clk.c                             |  8 ++++++++
>  5 files changed, 53 insertions(+), 1 deletion(-)
> ---
> base-commit: 3ef088b0c5772a6f75634e54aa34f5fc0a2c041c
> change-id: 20260224-gpu_dts-ab32c568d756
> 
> Best regards,
> -- 
> Antonios Christidis <a-christidis@ti.com>
> 

-- 
Regards,
Nishanth Menon
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