[PATCH] arm64: dts: meson: vim3l: add NNA node

[PATCH] arm64: dts: meson: vim3l: add NNA node

[xieqinick]

From: Nick Xie <nick@khadas.com>

Add Neural Network Accelerator device tree node
for Khadas VIM3L.

Signed-off-by: Nick Xie <nick@khadas.com>
---
 .../dts/amlogic/meson-sm1-khadas-vim3l.dts    | 23 +++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/arch/arm64/boot/dts/amlogic/meson-sm1-khadas-vim3l.dts b/arch/arm64/boot/dts/amlogic/meson-sm1-khadas-vim3l.dts
index 06de0b1ce726..8a4abb61432e 100644
--- a/arch/arm64/boot/dts/amlogic/meson-sm1-khadas-vim3l.dts
+++ b/arch/arm64/boot/dts/amlogic/meson-sm1-khadas-vim3l.dts
@@ -14,6 +14,29 @@ / {
 	compatible = "khadas,vim3l", "amlogic,sm1";
 	model = "Khadas VIM3L";
 
+	galcore {
+		compatible = "amlogic, galcore";
+		dev_name = "galcore";
+		status = "okay";
+		clocks = <&clkc CLKID_NNA_AXI_CLK>,
+			<&clkc CLKID_NNA_CORE_CLK>;
+		clock-names = "cts_vipnanoq_axi_clk_composite",
+			"cts_vipnanoq_core_clk_composite";
+		interrupts = <0 186 4>;
+		interrupt-names = "galcore";
+		reg = <0x0 0xff100000 0x0 0x800
+			0x0 0xff000000 0x0 0x400000
+			0x0 0xff63c118 0x0 0x0
+			0x0 0xff63c11c 0x0 0x0
+			0x0 0xffd01088 0x0 0x0
+			0x0 0xff63c1c8 0x0 0x0
+			>;
+		reg-names = "NN_REG","NN_SRAM","NN_MEM0",
+			"NN_MEM1","NN_RESET","NN_CLK";
+		nn_power_version = <3>;
+		nn_efuse = <0xff63003c 0x20>;
+	};
+
 	vddcpu: regulator-vddcpu {
 		/*
 		 * Silergy SY8030DEC Regulator.
-- 
2.25.1


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Re: [PATCH] arm64: dts: meson: vim3l: add NNA node

[Martin Blumenstingl]

Hi Nick,

On Sat, Jun 5, 2021 at 5:09 AM <xieqinick@gmail.com> wrote:
>
> From: Nick Xie <nick@khadas.com>
>
> Add Neural Network Accelerator device tree node
> for Khadas VIM3L.
we neither have a driver for this upstream nor any binding
documentation in Documentation/devicetree/bindings/
are you planning to add this?

Especially the missing binding documentation is problematic as it
causes some warnings when validating the .dts files against the
bindings from Documentation/devicetree/bindings/


Best regards,
Martin

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Re: [PATCH] arm64: dts: meson: vim3l: add NNA node

[Neil Armstrong]

Hi,

On 05/06/2021 11:49, Martin Blumenstingl wrote:
> Hi Nick,
> 
> On Sat, Jun 5, 2021 at 5:09 AM <xieqinick@gmail.com> wrote:
>>
>> From: Nick Xie <nick@khadas.com>
>>
>> Add Neural Network Accelerator device tree node
>> for Khadas VIM3L.
> we neither have a driver for this upstream nor any binding
> documentation in Documentation/devicetree/bindings/
> are you planning to add this?
> 
> Especially the missing binding documentation is problematic as it
> causes some warnings when validating the .dts files against the
> bindings from Documentation/devicetree/bindings/

Actually the NNA core is a verisilicon VIVANTE core, but I have no idea what is the difference
with the VIVANTE GPU cores ?

the userspace libraries & SDK shipped by Amlogic exposes OpenCL and (AFAIK) NNA over OpenCL, so I think
the HW description should be similar to the current Etnaviv bindings.

Neil

> 
> 
> Best regards,
> Martin
> 


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