linux-kernel - Re: [PATCH v3 4/4] arm64: dts: rockchip: Add rkvdec2 Video Decoder on rk3588(s)

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Date: Thu, 20 Jun 2024 17:00:49 +0200
From: Jonas Karlman <jonas@...boo.se>
To: Detlev Casanova <detlev.casanova@...labora.com>
Cc: linux-kernel@...r.kernel.org, Ezequiel Garcia
 <ezequiel@...guardiasur.com.ar>, Mauro Carvalho Chehab
 <mchehab@...nel.org>, Rob Herring <robh@...nel.org>, Krzysztof Kozlowski
 <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, Heiko Stuebner
 <heiko@...ech.de>, "Greg Kroah-Hartman" <gregkh@...uxfoundation.org>,
 Sebastian Reichel <sebastian.reichel@...labora.com>, Dragan Simic
 <dsimic@...jaro.org>, Diederik de Haas <didi.debian@...ow.org>, Andy Yan
 <andy.yan@...k-chips.com>, Boris Brezillon
 <boris.brezillon@...labora.com>, Hans Verkuil <hverkuil-cisco@...all.nl>,
 Daniel Almeida <daniel.almeida@...labora.com>, Paul Kocialkowski
 <paul.kocialkowski@...tlin.com>, Nicolas Dufresne
 <nicolas.dufresne@...labora.com>, Benjamin Gaignard
 <benjamin.gaignard@...labora.com>, Alex Bee <knaerzche@...il.com>,
 linux-media@...r.kernel.org, linux-rockchip@...ts.infradead.org,
 devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
 linux-staging@...ts.linux.dev
Subject: Re: [PATCH v3 4/4] arm64: dts: rockchip: Add rkvdec2 Video Decoder on
 rk3588(s)

Hi Detlev,

On 2024-06-20 16:19, Detlev Casanova wrote:
> Add the rkvdec2 Video Decoder to the RK3588s devicetree.
> 
> Signed-off-by: Detlev Casanova <detlev.casanova@...labora.com>
> ---
>  arch/arm64/boot/dts/rockchip/rk3588s.dtsi | 48 +++++++++++++++++++++++
>  1 file changed, 48 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/rockchip/rk3588s.dtsi b/arch/arm64/boot/dts/rockchip/rk3588s.dtsi
> index 6ac5ac8b48ab..9c44c99125b4 100644
> --- a/arch/arm64/boot/dts/rockchip/rk3588s.dtsi
> +++ b/arch/arm64/boot/dts/rockchip/rk3588s.dtsi
> @@ -2596,6 +2596,16 @@ system_sram2: sram@...01000 {
>  		ranges = <0x0 0x0 0xff001000 0xef000>;
>  		#address-cells = <1>;
>  		#size-cells = <1>;
> +
> +		vdec0_sram: rkvdec-sram@0 {
> +			reg = <0x0 0x78000>;
> +			pool;
> +		};
> +
> +		vdec1_sram: rkvdec-sram@1 {
> +			reg = <0x78000 0x77000>;
> +			pool;
> +		};
>  	};
>  
>  	pinctrl: pinctrl {
> @@ -2665,6 +2675,44 @@ gpio4: gpio@...50000 {
>  			#interrupt-cells = <2>;
>  		};
>  	};
> +
> +	vdec0: video-decoder@...38100 {

This and the vdec1 node should probably be added between

  pmu: power-management@...d8000

and

  av1d: video-codec@...70000

to follow reg order.

Also I am wondering if the nodes should be named

  video-codec@...38000

and

  video-codec@...40000

to match "1.1 Address Mapping" in TRM and the actual base address for
the VDPU381 IP and video-codec is used for other codec nodes.

> +		compatible = "rockchip,rk3588-vdec";
> +		reg = <0x0 0xfdc38100 0x0 0x500>;

For existing rkvdec1 devices the cache regs is also included in the
range, should cache regs also be included for rkvdec2?, e.g.:

  reg = <0x0 0xfdc38100 0x0 0x600>;

And maybe it also should include the link list regs, e.g.:

  reg = <0x0 0xfdc38000 0x0 0x700>;

or possible:

  reg = <0x0 0xfdc38000 0x0 0x100>,
        <0x0 0xfdc38100 0x0 0x500>,
        <0x0 0xfdc38600 0x0 0x100>;

Something like that may be a better description of the hw.

> +		interrupts = <GIC_SPI 95 IRQ_TYPE_LEVEL_HIGH 0>;
> +		clocks = <&cru ACLK_RKVDEC0>, <&cru HCLK_RKVDEC0>, <&cru CLK_RKVDEC0_CA>,
> +			 <&cru CLK_RKVDEC0_CORE>, <&cru CLK_RKVDEC0_HEVC_CA>;
> +		clock-names = "axi", "ahb", "cabac", "core", "hevc_cabac";
> +		assigned-clocks = <&cru ACLK_RKVDEC0>, <&cru CLK_RKVDEC0_CORE>,
> +				  <&cru CLK_RKVDEC0_CA>, <&cru CLK_RKVDEC0_HEVC_CA>;
> +		assigned-clock-rates = <800000000>, <600000000>,
> +				       <600000000>, <1000000000>;
> +		resets = <&cru SRST_A_RKVDEC0>, <&cru SRST_H_RKVDEC0>, <&cru SRST_RKVDEC0_CA>,
> +			 <&cru SRST_RKVDEC0_CORE>, <&cru SRST_RKVDEC0_HEVC_CA>;
> +		reset-names = "rst_axi", "rst_ahb", "rst_cabac",
> +			      "rst_core", "rst_hevc_cabac";

Do we need to include the rst prefix in the reset name?, does not look
like other DT/bindings normally include rst in their name.

> +		power-domains = <&power RK3588_PD_RKVDEC0>;
> +		sram = <&vdec0_sram>;
> +	};
> +
> +	vdec1: video-decoder@...40100 {

Same as above.

> +		compatible = "rockchip,rk3588-vdec";
> +		reg = <0x0 0xfdc40100 0x0 0x500>;

Same as above.

Regards,
Jonas

> +		interrupts = <GIC_SPI 97 IRQ_TYPE_LEVEL_HIGH 0>;
> +		clocks = <&cru ACLK_RKVDEC1>, <&cru HCLK_RKVDEC1>, <&cru CLK_RKVDEC1_CA>,
> +			 <&cru CLK_RKVDEC1_CORE>, <&cru CLK_RKVDEC1_HEVC_CA>;
> +		clock-names = "axi", "ahb", "cabac", "core", "hevc_cabac";
> +		assigned-clocks = <&cru ACLK_RKVDEC1>, <&cru CLK_RKVDEC1_CORE>,
> +				  <&cru CLK_RKVDEC1_CA>, <&cru CLK_RKVDEC1_HEVC_CA>;
> +		assigned-clock-rates = <800000000>, <600000000>,
> +				       <600000000>, <1000000000>;
> +		resets = <&cru SRST_A_RKVDEC1>, <&cru SRST_H_RKVDEC1>, <&cru SRST_RKVDEC1_CA>,
> +			 <&cru SRST_RKVDEC1_CORE>, <&cru SRST_RKVDEC1_HEVC_CA>;
> +		reset-names = "rst_axi", "rst_ahb", "rst_cabac",
> +			      "rst_core", "rst_hevc_cabac";
> +		power-domains = <&power RK3588_PD_RKVDEC1>;
> +		sram = <&vdec1_sram>;
> +	};
>  };
>  
>  #include "rk3588s-pinctrl.dtsi"