linux-kernel - Re: [PATCH v4 5/8] ARM: dts: at91: sam9x60: Add DMA bindings for the flexcom nodes

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Message-ID: <62154915-69b1-d8ee-db2a-b70a313946a7@microchip.com>
Date:   Mon, 16 Jan 2023 09:56:09 +0000
From:   <Claudiu.Beznea@...rochip.com>
To:     <Durai.ManickamKR@...rochip.com>, <Hari.PrasathGE@...rochip.com>,
        <Balamanikandan.Gunasundar@...rochip.com>,
        <Manikandan.M@...rochip.com>, <Varshini.Rajendran@...rochip.com>,
        <Dharma.B@...rochip.com>, <Nayabbasha.Sayed@...rochip.com>,
        <Balakrishnan.S@...rochip.com>, <Cristian.Birsan@...rochip.com>,
        <Nicolas.Ferre@...rochip.com>, <krzysztof.kozlowski@...aro.org>,
        <alexandre.belloni@...tlin.com>, <davem@...emloft.net>,
        <arnd@...db.de>, <olof@...om.net>, <soc@...nel.org>,
        <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <Kavyasree.Kotagiri@...rochip.com>,
        <Horatiu.Vultur@...rochip.com>, <robh+dt@...nel.org>,
        <andrew@...n.ch>, <michael@...le.cc>, <Jerry.Ray@...rochip.com>
Subject: Re: [PATCH v4 5/8] ARM: dts: at91: sam9x60: Add DMA bindings for the
 flexcom nodes

On 12.01.2023 13:02, Durai Manickam KR wrote:
> From: Manikandan Muralidharan <manikandan.m@...rochip.com>
> 
> Add dma bindings for flexcom nodes in the soc dtsi file. Users those who
> don't wish to use the DMA function for their flexcom functions can
> overwrite the dma bindings in the board device tree file.
> 
> Signed-off-by: Manikandan Muralidharan <manikandan.m@...rochip.com>
> [durai.manickamkr@...rochip.com: fixed code indentation and updated commit log]
> Signed-off-by: Durai Manickam KR <durai.manickamkr@...rochip.com>

Reviewed-by: Claudiu Beznea <claudiu.beznea@...rochip.com>


> ---
>  arch/arm/boot/dts/at91-sam9x60ek.dts |  3 +++
>  arch/arm/boot/dts/sam9x60.dtsi       | 27 +++++++++++++++++++++++++++
>  2 files changed, 30 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/at91-sam9x60ek.dts b/arch/arm/boot/dts/at91-sam9x60ek.dts
> index 6b6391d5041e..180e4b1aa2f6 100644
> --- a/arch/arm/boot/dts/at91-sam9x60ek.dts
> +++ b/arch/arm/boot/dts/at91-sam9x60ek.dts
> @@ -209,6 +209,7 @@ &flx0 {
>  	i2c0: i2c@600 {
>  		#address-cells = <1>;
>  		#size-cells = <0>;
> +		dmas = <0>, <0>;
>  		pinctrl-names = "default";
>  		pinctrl-0 = <&pinctrl_flx0_default>;
>  		i2c-analog-filter;
> @@ -230,6 +231,7 @@ &flx4 {
>  	status = "disabled";
>  
>  	spi4: spi@400 {
> +		dmas = <0>, <0>;
>  		pinctrl-names = "default";
>  		pinctrl-0 = <&pinctrl_flx4_default>;
>  		status = "disabled";
> @@ -254,6 +256,7 @@ &flx6 {
>  	i2c6: i2c@600 {
>  		#address-cells = <1>;
>  		#size-cells = <0>;
> +		dmas = <0>, <0>;
>  		pinctrl-names = "default";
>  		pinctrl-0 = <&pinctrl_flx6_default>;
>  		i2c-analog-filter;
> diff --git a/arch/arm/boot/dts/sam9x60.dtsi b/arch/arm/boot/dts/sam9x60.dtsi
> index fbdde3ab1086..8f44854dd8fa 100644
> --- a/arch/arm/boot/dts/sam9x60.dtsi
> +++ b/arch/arm/boot/dts/sam9x60.dtsi
> @@ -177,6 +177,15 @@ spi4: spi@400 {
>  					interrupts = <13 IRQ_TYPE_LEVEL_HIGH 7>;
>  					clocks = <&pmc PMC_TYPE_PERIPHERAL 13>;
>  					clock-names = "spi_clk";
> +					dmas = <&dma0
> +						(AT91_XDMAC_DT_MEM_IF(0) |
> +						 AT91_XDMAC_DT_PER_IF(1) |
> +						 AT91_XDMAC_DT_PERID(8))>,
> +						<&dma0
> +						(AT91_XDMAC_DT_MEM_IF(0) |
> +						 AT91_XDMAC_DT_PER_IF(1) |
> +						 AT91_XDMAC_DT_PERID(9))>;
> +					dma-names = "tx", "rx";
>  					atmel,fifo-size = <16>;
>  					status = "disabled";
>  				};
> @@ -417,6 +426,15 @@ i2c6: i2c@600 {
>  					reg = <0x600 0x200>;
>  					interrupts = <9 IRQ_TYPE_LEVEL_HIGH 7>;
>  					clocks = <&pmc PMC_TYPE_PERIPHERAL 9>;
> +					dmas = <&dma0
> +						(AT91_XDMAC_DT_MEM_IF(0) |
> +						 AT91_XDMAC_DT_PER_IF(1) |
> +						 AT91_XDMAC_DT_PERID(12))>,
> +						<&dma0
> +						(AT91_XDMAC_DT_MEM_IF(0) |
> +						 AT91_XDMAC_DT_PER_IF(1) |
> +						 AT91_XDMAC_DT_PERID(13))>;
> +					dma-names = "tx", "rx";
>  					atmel,fifo-size = <16>;
>  					status = "disabled";
>  				};
> @@ -456,6 +474,15 @@ i2c0: i2c@600 {
>  					reg = <0x600 0x200>;
>  					interrupts = <5 IRQ_TYPE_LEVEL_HIGH 7>;
>  					clocks = <&pmc PMC_TYPE_PERIPHERAL 5>;
> +					dmas = <&dma0
> +						(AT91_XDMAC_DT_MEM_IF(0) |
> +						 AT91_XDMAC_DT_PER_IF(1) |
> +						 AT91_XDMAC_DT_PERID(0))>,
> +						<&dma0
> +						(AT91_XDMAC_DT_MEM_IF(0) |
> +						 AT91_XDMAC_DT_PER_IF(1) |
> +						 AT91_XDMAC_DT_PERID(1))>;
> +					dma-names = "tx", "rx";
>  					atmel,fifo-size = <16>;
>  					status = "disabled";
>  				};