linux-kernel - Re: [PATCH v4 14/15] arm64: dts: mediatek: add display blocks support for the MT8365 SoC

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Message-ID: <6ab278ab-b8ed-405c-8f37-fc28610eac4e@collabora.com>
Date: Wed, 19 Jun 2024 12:47:37 +0200
From: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
To: Alexandre Mergnat <amergnat@...libre.com>,
 Chun-Kuang Hu <chunkuang.hu@...nel.org>,
 Philipp Zabel <p.zabel@...gutronix.de>,
 Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
 Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>,
 David Airlie <airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>,
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
 Conor Dooley <conor+dt@...nel.org>, Matthias Brugger
 <matthias.bgg@...il.com>, Jitao Shi <jitao.shi@...iatek.com>,
 CK Hu <ck.hu@...iatek.com>, Catalin Marinas <catalin.marinas@....com>,
 Will Deacon <will@...nel.org>
Cc: dri-devel@...ts.freedesktop.org, linux-mediatek@...ts.infradead.org,
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
 linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v4 14/15] arm64: dts: mediatek: add display blocks support
 for the MT8365 SoC

Il 23/05/24 14:49, Alexandre Mergnat ha scritto:
> - Add aliases for each display components to help display drivers.
> - Add the Display Pulse Width Modulation (DISP_PWM) to provide PWM signals
>    for the LED driver of mobile LCM.
> - Add the MIPI Display Serial Interface (DSI) PHY support. (up to 4-lane
>    output)
> - Add the display mutex support.
> - Add the following display component support:
>    - OVL0 (Overlay)
>    - RDMA0 (Data Path Read DMA)
>    - Color0
>    - CCorr0 (Color Correction)
>    - AAL0 (Adaptive Ambient Light)
>    - GAMMA0
>    - Dither0
>    - DSI0 (Display Serial Interface)
>    - RDMA1 (Data Path Read DMA)
>    - DPI0 (Display Parallel Interface)
> 
> Signed-off-by: Alexandre Mergnat <amergnat@...libre.com>
> ---
>   arch/arm64/boot/dts/mediatek/mt8365.dtsi | 336 +++++++++++++++++++++++++++++++
>   1 file changed, 336 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/mediatek/mt8365.dtsi b/arch/arm64/boot/dts/mediatek/mt8365.dtsi
> index 24581f7410aa..9f88645141d6 100644
> --- a/arch/arm64/boot/dts/mediatek/mt8365.dtsi
> +++ b/arch/arm64/boot/dts/mediatek/mt8365.dtsi
> @@ -8,6 +8,7 @@
>   #include <dt-bindings/clock/mediatek,mt8365-clk.h>
>   #include <dt-bindings/interrupt-controller/arm-gic.h>
>   #include <dt-bindings/interrupt-controller/irq.h>
> +#include <dt-bindings/memory/mediatek,mt8365-larb-port.h>
>   #include <dt-bindings/phy/phy.h>
>   #include <dt-bindings/power/mediatek,mt8365-power.h>
>   

..snip..

> +
> +		rdma1: rdma@...16000 {
> +			compatible = "mediatek,mt8365-disp-rdma", "mediatek,mt8183-disp-rdma";
> +			reg = <0 0x14016000 0 0x1000>;
> +			clocks = <&mmsys CLK_MM_MM_DISP_RDMA1>;
> +			interrupts = <GIC_SPI 195 IRQ_TYPE_LEVEL_LOW>;
> +			iommus = <&iommu M4U_PORT_DISP_RDMA1>;
> +			mediatek,rdma-fifo-size = <2048>;
> +			power-domains = <&spm MT8365_POWER_DOMAIN_MM>;
> +			ports {
> +				#address-cells = <1>;
> +				#size-cells = <0>;
> +
> +				port@0 {
> +					#address-cells = <1>;
> +					#size-cells = <0>;
> +					reg = <0>;

Hey Alex,

only one nit here - trying to get the formatting consistent between devicetrees for
all MediaTek SoCs.

VDOSYS/MMSYS:
			port {
				#address-cells = <1>;
				#size-cells = <0>;

				vdosys0_ep_main: endpoint@0 {
					reg = <0>;
					remote-endpoint = <&ovl0_in>;
				};
			};

RDMA/OVL/other components:

			ports {
				#address-cells = <1>;
				#size-cells = <0>;

				port@0 {
					reg = <0>;

					rdma0_in: endpoint {
						remote-endpoint = <&ovl0_out>;
					};
				};

Can you please follow the style that I've shown up there for all of the ports
nodes and resend the devicetree commits?

P.S.: This is a paste from the MT8195 devicetree that I'll send soon, probably
tomorrow or something along those lines.

After which, the devicetree looks ok to me.

Thanks,
Angelo