RE: [PATCH v3] ARM: dts: exynos: Remove DMA controller bus node name to fix dtschema warnings

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Hi Krzysztof

> -----Original Message-----
> From: Krzysztof Kozlowski <krzk@xxxxxxxxxx>
> Sent: 05 July 2020 23:48
> To: Rob Herring <robh+dt@xxxxxxxxxx>; Kukjin Kim <kgene@xxxxxxxxxx>;
> Krzysztof Kozlowski <krzk@xxxxxxxxxx>; devicetree@xxxxxxxxxxxxxxx;
linux-arm-
> kernel@xxxxxxxxxxxxxxxxxxx; linux-samsung-soc@xxxxxxxxxxxxxxx; linux-
> kernel@xxxxxxxxxxxxxxx
> Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@xxxxxxxxxxx>; Sylwester
Nawrocki
> <snawrocki@xxxxxxxxxx>; Alim Akhtar <alim.akhtar@xxxxxxxxxxx>; Chanwoo
> Choi <cw00.choi@xxxxxxxxxxx>; Pankaj Dubey
> <pankaj.dubey@xxxxxxxxxxx>
> Subject: [PATCH v3] ARM: dts: exynos: Remove DMA controller bus node name
> to fix dtschema warnings
> 
> There is no need to keep DMA controller nodes under AMBA bus node.
> Remove the "amba" node to fix dtschema warnings like:
> 
>     amba: $nodename:0: 'amba' does not match '^(bus|soc|axi|ahb|apb)(@[0-
> 9a-f]+)?$'
> 
> Signed-off-by: Krzysztof Kozlowski <krzk@xxxxxxxxxx>
> 
Reviewed-by: Alim Akhtar <alim.akhtar@xxxxxxxxxxx>

> ---
> 
> Changes since v2:
> 1. Keep the alphabetical order in exynos4210-universal_c210.dts, as
suggested
> by Marek
> 
> Changes since v1:
> 1. Remove the bus, as suggested by Marek
> ---
>  arch/arm/boot/dts/exynos3250.dtsi             |  47 +++----
>  arch/arm/boot/dts/exynos4.dtsi                |  70 +++++-----
>  .../boot/dts/exynos4210-universal_c210.dts    |  28 ++--
>  arch/arm/boot/dts/exynos5250.dtsi             |  92 ++++++-------
>  arch/arm/boot/dts/exynos5410.dtsi             |  46 +++----
>  arch/arm/boot/dts/exynos5420.dtsi             | 130 ++++++++----------
>  6 files changed, 187 insertions(+), 226 deletions(-)
> 
> diff --git a/arch/arm/boot/dts/exynos3250.dtsi
> b/arch/arm/boot/dts/exynos3250.dtsi
> index 044e5da64a76..d3fb45a56527 100644
> --- a/arch/arm/boot/dts/exynos3250.dtsi
> +++ b/arch/arm/boot/dts/exynos3250.dtsi
> @@ -418,33 +418,26 @@
>  			status = "disabled";
>  		};
> 
> -		amba {
> -			compatible = "simple-bus";
> -			#address-cells = <1>;
> -			#size-cells = <1>;
> -			ranges;
> -
> -			pdma0: pdma@12680000 {
> -				compatible = "arm,pl330", "arm,primecell";
> -				reg = <0x12680000 0x1000>;
> -				interrupts = <GIC_SPI 138
> IRQ_TYPE_LEVEL_HIGH>;
> -				clocks = <&cmu CLK_PDMA0>;
> -				clock-names = "apb_pclk";
> -				#dma-cells = <1>;
> -				#dma-channels = <8>;
> -				#dma-requests = <32>;
> -			};
> -
> -			pdma1: pdma@12690000 {
> -				compatible = "arm,pl330", "arm,primecell";
> -				reg = <0x12690000 0x1000>;
> -				interrupts = <GIC_SPI 139
> IRQ_TYPE_LEVEL_HIGH>;
> -				clocks = <&cmu CLK_PDMA1>;
> -				clock-names = "apb_pclk";
> -				#dma-cells = <1>;
> -				#dma-channels = <8>;
> -				#dma-requests = <32>;
> -			};
> +		pdma0: pdma@12680000 {
> +			compatible = "arm,pl330", "arm,primecell";
> +			reg = <0x12680000 0x1000>;
> +			interrupts = <GIC_SPI 138 IRQ_TYPE_LEVEL_HIGH>;
> +			clocks = <&cmu CLK_PDMA0>;
> +			clock-names = "apb_pclk";
> +			#dma-cells = <1>;
> +			#dma-channels = <8>;
> +			#dma-requests = <32>;
> +		};
> +
> +		pdma1: pdma@12690000 {
> +			compatible = "arm,pl330", "arm,primecell";
> +			reg = <0x12690000 0x1000>;
> +			interrupts = <GIC_SPI 139 IRQ_TYPE_LEVEL_HIGH>;
> +			clocks = <&cmu CLK_PDMA1>;
> +			clock-names = "apb_pclk";
> +			#dma-cells = <1>;
> +			#dma-channels = <8>;
> +			#dma-requests = <32>;
>  		};
> 
>  		adc: adc@126c0000 {
> diff --git a/arch/arm/boot/dts/exynos4.dtsi
b/arch/arm/boot/dts/exynos4.dtsi
> index d2779a790ce3..a1e54449f33f 100644
> --- a/arch/arm/boot/dts/exynos4.dtsi
> +++ b/arch/arm/boot/dts/exynos4.dtsi
> @@ -669,45 +669,37 @@
>  			status = "disabled";
>  		};
> 
> -		amba: amba {
> -			#address-cells = <1>;
> -			#size-cells = <1>;
> -			compatible = "simple-bus";
> -			interrupt-parent = <&gic>;
> -			ranges;
> -
> -			pdma0: pdma@12680000 {
> -				compatible = "arm,pl330", "arm,primecell";
> -				reg = <0x12680000 0x1000>;
> -				interrupts = <GIC_SPI 35
> IRQ_TYPE_LEVEL_HIGH>;
> -				clocks = <&clock CLK_PDMA0>;
> -				clock-names = "apb_pclk";
> -				#dma-cells = <1>;
> -				#dma-channels = <8>;
> -				#dma-requests = <32>;
> -			};
> -
> -			pdma1: pdma@12690000 {
> -				compatible = "arm,pl330", "arm,primecell";
> -				reg = <0x12690000 0x1000>;
> -				interrupts = <GIC_SPI 36
> IRQ_TYPE_LEVEL_HIGH>;
> -				clocks = <&clock CLK_PDMA1>;
> -				clock-names = "apb_pclk";
> -				#dma-cells = <1>;
> -				#dma-channels = <8>;
> -				#dma-requests = <32>;
> -			};
> -
> -			mdma1: mdma@12850000 {
> -				compatible = "arm,pl330", "arm,primecell";
> -				reg = <0x12850000 0x1000>;
> -				interrupts = <GIC_SPI 34
> IRQ_TYPE_LEVEL_HIGH>;
> -				clocks = <&clock CLK_MDMA>;
> -				clock-names = "apb_pclk";
> -				#dma-cells = <1>;
> -				#dma-channels = <8>;
> -				#dma-requests = <1>;
> -			};
> +		pdma0: pdma@12680000 {
> +			compatible = "arm,pl330", "arm,primecell";
> +			reg = <0x12680000 0x1000>;
> +			interrupts = <GIC_SPI 35 IRQ_TYPE_LEVEL_HIGH>;
> +			clocks = <&clock CLK_PDMA0>;
> +			clock-names = "apb_pclk";
> +			#dma-cells = <1>;
> +			#dma-channels = <8>;
> +			#dma-requests = <32>;
> +		};
> +
> +		pdma1: pdma@12690000 {
> +			compatible = "arm,pl330", "arm,primecell";
> +			reg = <0x12690000 0x1000>;
> +			interrupts = <GIC_SPI 36 IRQ_TYPE_LEVEL_HIGH>;
> +			clocks = <&clock CLK_PDMA1>;
> +			clock-names = "apb_pclk";
> +			#dma-cells = <1>;
> +			#dma-channels = <8>;
> +			#dma-requests = <32>;
> +		};
> +
> +		mdma1: mdma@12850000 {
> +			compatible = "arm,pl330", "arm,primecell";
> +			reg = <0x12850000 0x1000>;
> +			interrupts = <GIC_SPI 34 IRQ_TYPE_LEVEL_HIGH>;
> +			clocks = <&clock CLK_MDMA>;
> +			clock-names = "apb_pclk";
> +			#dma-cells = <1>;
> +			#dma-channels = <8>;
> +			#dma-requests = <1>;
>  		};
> 
>  		fimd: fimd@11c00000 {
> diff --git a/arch/arm/boot/dts/exynos4210-universal_c210.dts
> b/arch/arm/boot/dts/exynos4210-universal_c210.dts
> index 02fde1a75ebd..99ce53b120ac 100644
> --- a/arch/arm/boot/dts/exynos4210-universal_c210.dts
> +++ b/arch/arm/boot/dts/exynos4210-universal_c210.dts
> @@ -181,20 +181,6 @@
>  	};
>  };
> 
> -&amba {
> -	mdma0: mdma@12840000 {
> -		compatible = "arm,pl330", "arm,primecell";
> -		reg = <0x12840000 0x1000>;
> -		interrupts = <GIC_SPI 34 IRQ_TYPE_LEVEL_HIGH>;
> -		clocks = <&clock CLK_MDMA>;
> -		clock-names = "apb_pclk";
> -		#dma-cells = <1>;
> -		#dma-channels = <8>;
> -		#dma-requests = <1>;
> -		power-domains = <&pd_lcd0>;
> -	};
> -};
> -
>  &camera {
>  	status = "okay";
> 
> @@ -616,6 +602,20 @@
>  	/delete-property/dma-names;
>  };
> 
> +&soc {
> +	mdma0: mdma@12840000 {
> +		compatible = "arm,pl330", "arm,primecell";
> +		reg = <0x12840000 0x1000>;
> +		interrupts = <GIC_SPI 34 IRQ_TYPE_LEVEL_HIGH>;
> +		clocks = <&clock CLK_MDMA>;
> +		clock-names = "apb_pclk";
> +		#dma-cells = <1>;
> +		#dma-channels = <8>;
> +		#dma-requests = <1>;
> +		power-domains = <&pd_lcd0>;
> +	};
> +};
> +
>  &sysram {
>  	smp-sram@0 {
>  		status = "disabled";
> diff --git a/arch/arm/boot/dts/exynos5250.dtsi
> b/arch/arm/boot/dts/exynos5250.dtsi
> index b6135af7ef39..e3dbe4166836 100644
> --- a/arch/arm/boot/dts/exynos5250.dtsi
> +++ b/arch/arm/boot/dts/exynos5250.dtsi
> @@ -679,56 +679,48 @@
>  			samsung,pmureg-phandle =
> <&pmu_system_controller>;
>  		};
> 
> -		amba {
> -			#address-cells = <1>;
> -			#size-cells = <1>;
> -			compatible = "simple-bus";
> -			interrupt-parent = <&gic>;
> -			ranges;
> -
> -			pdma0: pdma@121a0000 {
> -				compatible = "arm,pl330", "arm,primecell";
> -				reg = <0x121A0000 0x1000>;
> -				interrupts = <GIC_SPI 34
> IRQ_TYPE_LEVEL_HIGH>;
> -				clocks = <&clock CLK_PDMA0>;
> -				clock-names = "apb_pclk";
> -				#dma-cells = <1>;
> -				#dma-channels = <8>;
> -				#dma-requests = <32>;
> -			};
> -
> -			pdma1: pdma@121b0000 {
> -				compatible = "arm,pl330", "arm,primecell";
> -				reg = <0x121B0000 0x1000>;
> -				interrupts = <GIC_SPI 35
> IRQ_TYPE_LEVEL_HIGH>;
> -				clocks = <&clock CLK_PDMA1>;
> -				clock-names = "apb_pclk";
> -				#dma-cells = <1>;
> -				#dma-channels = <8>;
> -				#dma-requests = <32>;
> -			};
> -
> -			mdma0: mdma@10800000 {
> -				compatible = "arm,pl330", "arm,primecell";
> -				reg = <0x10800000 0x1000>;
> -				interrupts = <GIC_SPI 33
> IRQ_TYPE_LEVEL_HIGH>;
> -				clocks = <&clock CLK_MDMA0>;
> -				clock-names = "apb_pclk";
> -				#dma-cells = <1>;
> -				#dma-channels = <8>;
> -				#dma-requests = <1>;
> -			};
> -
> -			mdma1: mdma@11c10000 {
> -				compatible = "arm,pl330", "arm,primecell";
> -				reg = <0x11C10000 0x1000>;
> -				interrupts = <GIC_SPI 124
> IRQ_TYPE_LEVEL_HIGH>;
> -				clocks = <&clock CLK_MDMA1>;
> -				clock-names = "apb_pclk";
> -				#dma-cells = <1>;
> -				#dma-channels = <8>;
> -				#dma-requests = <1>;
> -			};
> +		pdma0: pdma@121a0000 {
> +			compatible = "arm,pl330", "arm,primecell";
> +			reg = <0x121A0000 0x1000>;
> +			interrupts = <GIC_SPI 34 IRQ_TYPE_LEVEL_HIGH>;
> +			clocks = <&clock CLK_PDMA0>;
> +			clock-names = "apb_pclk";
> +			#dma-cells = <1>;
> +			#dma-channels = <8>;
> +			#dma-requests = <32>;
> +		};
> +
> +		pdma1: pdma@121b0000 {
> +			compatible = "arm,pl330", "arm,primecell";
> +			reg = <0x121B0000 0x1000>;
> +			interrupts = <GIC_SPI 35 IRQ_TYPE_LEVEL_HIGH>;
> +			clocks = <&clock CLK_PDMA1>;
> +			clock-names = "apb_pclk";
> +			#dma-cells = <1>;
> +			#dma-channels = <8>;
> +			#dma-requests = <32>;
> +		};
> +
> +		mdma0: mdma@10800000 {
> +			compatible = "arm,pl330", "arm,primecell";
> +			reg = <0x10800000 0x1000>;
> +			interrupts = <GIC_SPI 33 IRQ_TYPE_LEVEL_HIGH>;
> +			clocks = <&clock CLK_MDMA0>;
> +			clock-names = "apb_pclk";
> +			#dma-cells = <1>;
> +			#dma-channels = <8>;
> +			#dma-requests = <1>;
> +		};
> +
> +		mdma1: mdma@11c10000 {
> +			compatible = "arm,pl330", "arm,primecell";
> +			reg = <0x11C10000 0x1000>;
> +			interrupts = <GIC_SPI 124 IRQ_TYPE_LEVEL_HIGH>;
> +			clocks = <&clock CLK_MDMA1>;
> +			clock-names = "apb_pclk";
> +			#dma-cells = <1>;
> +			#dma-channels = <8>;
> +			#dma-requests = <1>;
>  		};
> 
>  		gsc_0:  gsc@13e00000 {
> diff --git a/arch/arm/boot/dts/exynos5410.dtsi
> b/arch/arm/boot/dts/exynos5410.dtsi
> index 2eab80bf5f3a..abe75b9e39f5 100644
> --- a/arch/arm/boot/dts/exynos5410.dtsi
> +++ b/arch/arm/boot/dts/exynos5410.dtsi
> @@ -189,34 +189,26 @@
>  			interrupts = <GIC_SPI 47 IRQ_TYPE_LEVEL_HIGH>;
>  		};
> 
> -		amba {
> -			#address-cells = <1>;
> -			#size-cells = <1>;
> -			compatible = "simple-bus";
> -			interrupt-parent = <&gic>;
> -			ranges;
> -
> -			pdma0: pdma@121a0000 {
> -				compatible = "arm,pl330", "arm,primecell";
> -				reg = <0x121a0000 0x1000>;
> -				interrupts = <GIC_SPI 34
> IRQ_TYPE_LEVEL_HIGH>;
> -				clocks = <&clock CLK_PDMA0>;
> -				clock-names = "apb_pclk";
> -				#dma-cells = <1>;
> -				#dma-channels = <8>;
> -				#dma-requests = <32>;
> -			};
> +		pdma0: pdma@121a0000 {
> +			compatible = "arm,pl330", "arm,primecell";
> +			reg = <0x121a0000 0x1000>;
> +			interrupts = <GIC_SPI 34 IRQ_TYPE_LEVEL_HIGH>;
> +			clocks = <&clock CLK_PDMA0>;
> +			clock-names = "apb_pclk";
> +			#dma-cells = <1>;
> +			#dma-channels = <8>;
> +			#dma-requests = <32>;
> +		};
> 
> -			pdma1: pdma@121b0000 {
> -				compatible = "arm,pl330", "arm,primecell";
> -				reg = <0x121b0000 0x1000>;
> -				interrupts = <GIC_SPI 35
> IRQ_TYPE_LEVEL_HIGH>;
> -				clocks = <&clock CLK_PDMA1>;
> -				clock-names = "apb_pclk";
> -				#dma-cells = <1>;
> -				#dma-channels = <8>;
> -				#dma-requests = <32>;
> -			};
> +		pdma1: pdma@121b0000 {
> +			compatible = "arm,pl330", "arm,primecell";
> +			reg = <0x121b0000 0x1000>;
> +			interrupts = <GIC_SPI 35 IRQ_TYPE_LEVEL_HIGH>;
> +			clocks = <&clock CLK_PDMA1>;
> +			clock-names = "apb_pclk";
> +			#dma-cells = <1>;
> +			#dma-channels = <8>;
> +			#dma-requests = <32>;
>  		};
> 
>  		audi2s0: i2s@3830000 {
> diff --git a/arch/arm/boot/dts/exynos5420.dtsi
> b/arch/arm/boot/dts/exynos5420.dtsi
> index b672080e7469..c76460b70532 100644
> --- a/arch/arm/boot/dts/exynos5420.dtsi
> +++ b/arch/arm/boot/dts/exynos5420.dtsi
> @@ -433,76 +433,68 @@
>  			power-domains = <&mau_pd>;
>  		};
> 
> -		amba {
> -			#address-cells = <1>;
> -			#size-cells = <1>;
> -			compatible = "simple-bus";
> -			interrupt-parent = <&gic>;
> -			ranges;
> -
> -			adma: adma@3880000 {
> -				compatible = "arm,pl330", "arm,primecell";
> -				reg = <0x03880000 0x1000>;
> -				interrupts = <GIC_SPI 110
> IRQ_TYPE_LEVEL_HIGH>;
> -				clocks = <&clock_audss EXYNOS_ADMA>;
> -				clock-names = "apb_pclk";
> -				#dma-cells = <1>;
> -				#dma-channels = <6>;
> -				#dma-requests = <16>;
> -				power-domains = <&mau_pd>;
> -			};
> -
> -			pdma0: pdma@121a0000 {
> -				compatible = "arm,pl330", "arm,primecell";
> -				reg = <0x121A0000 0x1000>;
> -				interrupts = <GIC_SPI 34
> IRQ_TYPE_LEVEL_HIGH>;
> -				clocks = <&clock CLK_PDMA0>;
> -				clock-names = "apb_pclk";
> -				#dma-cells = <1>;
> -				#dma-channels = <8>;
> -				#dma-requests = <32>;
> -			};
> -
> -			pdma1: pdma@121b0000 {
> -				compatible = "arm,pl330", "arm,primecell";
> -				reg = <0x121B0000 0x1000>;
> -				interrupts = <GIC_SPI 35
> IRQ_TYPE_LEVEL_HIGH>;
> -				clocks = <&clock CLK_PDMA1>;
> -				clock-names = "apb_pclk";
> -				#dma-cells = <1>;
> -				#dma-channels = <8>;
> -				#dma-requests = <32>;
> -			};
> -
> -			mdma0: mdma@10800000 {
> -				compatible = "arm,pl330", "arm,primecell";
> -				reg = <0x10800000 0x1000>;
> -				interrupts = <GIC_SPI 33
> IRQ_TYPE_LEVEL_HIGH>;
> -				clocks = <&clock CLK_MDMA0>;
> -				clock-names = "apb_pclk";
> -				#dma-cells = <1>;
> -				#dma-channels = <8>;
> -				#dma-requests = <1>;
> -			};
> +		adma: adma@3880000 {
> +			compatible = "arm,pl330", "arm,primecell";
> +			reg = <0x03880000 0x1000>;
> +			interrupts = <GIC_SPI 110 IRQ_TYPE_LEVEL_HIGH>;
> +			clocks = <&clock_audss EXYNOS_ADMA>;
> +			clock-names = "apb_pclk";
> +			#dma-cells = <1>;
> +			#dma-channels = <6>;
> +			#dma-requests = <16>;
> +			power-domains = <&mau_pd>;
> +		};
> 
> -			mdma1: mdma@11c10000 {
> -				compatible = "arm,pl330", "arm,primecell";
> -				reg = <0x11C10000 0x1000>;
> -				interrupts = <GIC_SPI 124
> IRQ_TYPE_LEVEL_HIGH>;
> -				clocks = <&clock CLK_MDMA1>;
> -				clock-names = "apb_pclk";
> -				#dma-cells = <1>;
> -				#dma-channels = <8>;
> -				#dma-requests = <1>;
> -				/*
> -				 * MDMA1 can support both secure and non-
> secure
> -				 * AXI transactions. When this is enabled in
> -				 * the kernel for boards that run in secure
> -				 * mode, we are getting imprecise external
> -				 * aborts causing the kernel to oops.
> -				 */
> -				status = "disabled";
> -			};
> +		pdma0: pdma@121a0000 {
> +			compatible = "arm,pl330", "arm,primecell";
> +			reg = <0x121A0000 0x1000>;
> +			interrupts = <GIC_SPI 34 IRQ_TYPE_LEVEL_HIGH>;
> +			clocks = <&clock CLK_PDMA0>;
> +			clock-names = "apb_pclk";
> +			#dma-cells = <1>;
> +			#dma-channels = <8>;
> +			#dma-requests = <32>;
> +		};
> +
> +		pdma1: pdma@121b0000 {
> +			compatible = "arm,pl330", "arm,primecell";
> +			reg = <0x121B0000 0x1000>;
> +			interrupts = <GIC_SPI 35 IRQ_TYPE_LEVEL_HIGH>;
> +			clocks = <&clock CLK_PDMA1>;
> +			clock-names = "apb_pclk";
> +			#dma-cells = <1>;
> +			#dma-channels = <8>;
> +			#dma-requests = <32>;
> +		};
> +
> +		mdma0: mdma@10800000 {
> +			compatible = "arm,pl330", "arm,primecell";
> +			reg = <0x10800000 0x1000>;
> +			interrupts = <GIC_SPI 33 IRQ_TYPE_LEVEL_HIGH>;
> +			clocks = <&clock CLK_MDMA0>;
> +			clock-names = "apb_pclk";
> +			#dma-cells = <1>;
> +			#dma-channels = <8>;
> +			#dma-requests = <1>;
> +		};
> +
> +		mdma1: mdma@11c10000 {
> +			compatible = "arm,pl330", "arm,primecell";
> +			reg = <0x11C10000 0x1000>;
> +			interrupts = <GIC_SPI 124 IRQ_TYPE_LEVEL_HIGH>;
> +			clocks = <&clock CLK_MDMA1>;
> +			clock-names = "apb_pclk";
> +			#dma-cells = <1>;
> +			#dma-channels = <8>;
> +			#dma-requests = <1>;
> +			/*
> +			 * MDMA1 can support both secure and non-secure
> +			 * AXI transactions. When this is enabled in
> +			 * the kernel for boards that run in secure
> +			 * mode, we are getting imprecise external
> +			 * aborts causing the kernel to oops.
> +			 */
> +			status = "disabled";
>  		};
> 
>  		i2s0: i2s@3830000 {
> --
> 2.17.1





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