Re: [PATCH v2] ARM: at91: add Atmel's SAMA5D3 Xplained board

[Nicolas Ferre]

On 07/02/2014 09:01, Jean-Christophe PLAGNIOL-VILLARD :
> On 09:35 Wed 05 Feb     , Nicolas Ferre wrote:
>> Add DT file for new SAMA5D3 Xpained board.
>> This board is based on Atmel's SAMA5D36 Cortex-A5 SoC.
>>
>> Signed-off-by: Nicolas Ferre <nicolas.ferre@xxxxxxxxx>
>> ---
>>  arch/arm/boot/dts/Makefile                  |   1 +
>>  arch/arm/boot/dts/at91-sama5d3_xplained.dts | 233 ++++++++++++++++++++++++++++
>>  2 files changed, 234 insertions(+)
>>  create mode 100644 arch/arm/boot/dts/at91-sama5d3_xplained.dts
>>
>> diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
>> index b9d6a8b485e0..6d1e43d46187 100644
>> --- a/arch/arm/boot/dts/Makefile
>> +++ b/arch/arm/boot/dts/Makefile
>> @@ -38,6 +38,7 @@ dtb-$(CONFIG_ARCH_AT91) += at91sam9g35ek.dtb
>>  dtb-$(CONFIG_ARCH_AT91) += at91sam9x25ek.dtb
>>  dtb-$(CONFIG_ARCH_AT91) += at91sam9x35ek.dtb
>>  # sama5d3
>> +dtb-$(CONFIG_ARCH_AT91)	+= at91-sama5d3_xplained.dtb
>>  dtb-$(CONFIG_ARCH_AT91)	+= sama5d31ek.dtb
>>  dtb-$(CONFIG_ARCH_AT91)	+= sama5d33ek.dtb
>>  dtb-$(CONFIG_ARCH_AT91)	+= sama5d34ek.dtb
>> diff --git a/arch/arm/boot/dts/at91-sama5d3_xplained.dts b/arch/arm/boot/dts/at91-sama5d3_xplained.dts
>> new file mode 100644
>> index 000000000000..fb1349ca60a4
>> --- /dev/null
>> +++ b/arch/arm/boot/dts/at91-sama5d3_xplained.dts
>> @@ -0,0 +1,233 @@
>> +/*
>> + * at91-sama5d3_xplained.dts - Device Tree file for the SAMA5D3 Xplained board
>> + *
>> + *  Copyright (C) 2014 Atmel,
>> + *		  2014 Nicolas Ferre <nicolas.ferre@xxxxxxxxx>
>> + *
>> + * Licensed under GPLv2 or later.
>> + */
>> +/dts-v1/;
>> +#include "sama5d36.dtsi"
>> +
>> +/ {
>> +	model = "SAMA5D3 Xplained";
>> +	compatible = "atmel,sama5d3-xplained", "atmel,sama5d3", "atmel,sama5";
>> +
>> +	chosen {
>> +		bootargs = "console=ttyS0,115200";
> can you describe it via linux,stdout

Well I would have liked, but the code in the serial driver is not there yet.
So, I keep it like this for the moment.

>> +	};
>> +
>> +	memory {
>> +		reg = <0x20000000 0x10000000>;
>> +	};
>> +
>> +	ahb {
>> +		apb {
>> +			mmc0: mmc@f0000000 {
>> +				pinc§trl-names = "default";
> ?? this is SoC should never been seen here
>> +				pinctrl-0 = <&pinctrl_mmc0_clk_cmd_dat0 &pinctrl_mmc0_dat1_3 &pinctrl_mmc0_dat4_7 &pinctrl_mmc0_cd>;
>> +				status = "okay";
>> +				slot@0 {
>> +					reg = <0>;
>> +					bus-width = <8>;
>> +					cd-gpios = <&pioE 0 GPIO_ACTIVE_LOW>;
>> +				};
>> +			};
>> +
>> +			spi0: spi@f0004000 {
>> +				cs-gpios = <&pioD 13 0>, <0>, <0>, <0>;
> if you use only one CS no need to specified all
> 
> we need to add macro per SoC for the hw CS used as GPIO so it's more clear

No, I do not think so.

>> +				status = "okay";
>> +			};
>> +
>> +			can0: can@f000c000 {
>> +				status = "okay";
>> +			};
>> +
>> +			i2c0: i2c@f0014000 {
>> +				status = "okay";
>> +			};
>> +
>> +			i2c1: i2c@f0018000 {
>> +				status = "okay";
>> +			};
>> +
>> +			macb0: ethernet@f0028000 {
>> +				phy-mode = "rgmii";
>> +				status = "okay";
>> +			};
>> +
>> +			usart0: serial@f001c000 {
>> +				status = "okay";
>> +			};
>> +
>> +			usart1: serial@f0020000 {
>> +				pinctrl-names = "default";
> same as mmc
>> +				pinctrl-0 = <&pinctrl_usart1 &pinctrl_usart1_rts_cts>;
>> +				status = "okay";
>> +			};
>> +
>> +			uart0: serial@f0024000 {
>> +				status = "okay";
>> +			};
>> +
>> +			mmc1: mmc@f8000000 {
>> +				pinctrl-names = "default";
> ditto
>> +				pinctrl-0 = <&pinctrl_mmc1_clk_cmd_dat0 &pinctrl_mmc1_dat1_3 &pinctrl_mmc1_cd>;
>> +				status = "okay";
>> +				slot@0 {
>> +					reg = <0>;
>> +					bus-width = <4>;
>> +					cd-gpios = <&pioE 1 GPIO_ACTIVE_HIGH>;
>> +				};
>> +			};
>> +
>> +			spi1: spi@f8008000 {
>> +				cs-gpios = <&pioC 25 0>, <0>, <0>, <&pioD 16 0>;
>> +				status = "okay";
>> +			};
>> +
>> +			adc0: adc@f8018000 {
>> +				pinctrl-names = "default";
> ditto
>> +				pinctrl-0 = <
>> +					&pinctrl_adc0_adtrg
>> +					&pinctrl_adc0_ad0
>> +					&pinctrl_adc0_ad1
>> +					&pinctrl_adc0_ad2
>> +					&pinctrl_adc0_ad3
>> +					&pinctrl_adc0_ad4
>> +					&pinctrl_adc0_ad5
>> +					&pinctrl_adc0_ad6
>> +					&pinctrl_adc0_ad7
>> +					&pinctrl_adc0_ad8
>> +					&pinctrl_adc0_ad9
>> +					>;
>> +				status = "okay";
>> +			};
>> +
>> +			i2c2: i2c@f801c000 {
>> +				dmas = <0>, <0>;	/* Do not use DMA for i2c2 */
> why?

Because we use the channels for other peripherals

>> +				status = "okay";
>> +			};
>> +
>> +			macb1: ethernet@f802c000 {
>> +				phy-mode = "rmii";
>> +				status = "okay";
>> +			};
>> +
>> +			dbgu: serial@ffffee00 {
>> +				status = "okay";
>> +			};
>> +
>> +			pinctrl@fffff200 {
>> +				board {
>> +					pinctrl_mmc0_cd: mmc0_cd {
>> +						atmel,pins =
>> +							<AT91_PIOE 0 AT91_PERIPH_GPIO AT91_PINCTRL_PULL_UP_DEGLITCH>;
>> +					};
>> +
>> +					pinctrl_mmc1_cd: mmc1_cd {
>> +						atmel,pins =
>> +							<AT91_PIOE 1 AT91_PERIPH_GPIO AT91_PINCTRL_PULL_UP_DEGLITCH>;
>> +					};
>> +
>> +					pinctrl_usba_vbus: usba_vbus {
>> +						atmel,pins =
>> +							<AT91_PIOE 9 AT91_PERIPH_GPIO AT91_PINCTRL_DEGLITCH>;	/* PE9, conflicts with A9 */
> in this case we should have ifdef so we could choose what we want via make
> file

No, we choose by modifying the DTS.

>> +					};
>> +				};
>> +			};
>> +
>> +			pmc: pmc@fffffc00 {
>> +				main: mainck {
>> +					clock-frequency = <12000000>;
>> +				};
>> +			};
>> +		};
>> +
>> +		nand0: nand@60000000 {
>> +			nand-bus-width = <8>;
>> +			nand-ecc-mode = "hw";
>> +			atmel,has-pmecc;
>> +			atmel,pmecc-cap = <4>;
>> +			atmel,pmecc-sector-size = <512>;
>> +			nand-on-flash-bbt;
>> +			status = "okay";
>> +
>> +			at91bootstrap@0 {
>> +				label = "at91bootstrap";
>> +				reg = <0x0 0x40000>;
>> +			};
>> +
>> +			bootloader@40000 {
>> +				label = "bootloader";
>> +				reg = <0x40000 0x80000>;
>> +			};
>> +
>> +			bootloaderenv@c0000 {
>> +				label = "bootloader env";
>> +				reg = <0xc0000 0xc0000>;
>> +			};
>> +
>> +			dtb@180000 {
>> +				label = "device tree";
>> +				reg = <0x180000 0x80000>;
>> +			};
>> +
>> +			kernel@200000 {
>> +				label = "kernel";
>> +				reg = <0x200000 0x600000>;
>> +			};
>> +
>> +			rootfs@800000 {
>> +				label = "rootfs";
>> +				reg = <0x800000 0x0f800000>;
>> +			};
> more I read this partition more it's seems wrong those days
> 
> we really need to switch to UBI

I am using UBI with this layout.

>> +		};
>> +
>> +		usb0: gadget@00500000 {
>> +			atmel,vbus-gpio = <&pioE 9 GPIO_ACTIVE_HIGH>;	/* PE9, conflicts with A9 */
>> +			pinctrl-names = "default";
>> +			pinctrl-0 = <&pinctrl_usba_vbus>;
>> +			status = "okay";
>> +		};
>> +
>> +		usb1: ohci@00600000 {
>> +			num-ports = <3>;
>> +			atmel,vbus-gpio = <0
>> +					   &pioE 3 GPIO_ACTIVE_LOW
>> +					   &pioE 4 GPIO_ACTIVE_LOW
>> +					  >;
>> +			status = "okay";
>> +		};
>> +
>> +		usb2: ehci@00700000 {
>> +			status = "okay";
>> +		};
>> +	};
>> +
>> +	gpio_keys {
>> +		compatible = "gpio-keys";
>> +
>> +		bp3 {
>> +			label = "PB_USER";
>> +			gpios = <&pioE 29 GPIO_ACTIVE_LOW>;
>> +			linux,code = <0x104>;
>> +			gpio-key,wakeup;
>> +		};
>> +	};
>> +
>> +	leds {
>> +		compatible = "gpio-leds";
>> +
>> +		d2 {
>> +			label = "d2";
>> +			gpios = <&pioE 23 GPIO_ACTIVE_LOW>;	/* PE23, conflicts with A23, CTS2 */
>> +			linux,default-trigger = "heartbeat";
>> +		};
>> +
>> +		d3 {
>> +			label = "d3";
>> +			gpios = <&pioE 24 GPIO_ACTIVE_HIGH>;
>> +		};
>> +	};
>> +};
>> -- 
>> 1.8.2.2
>>
> 


-- 
Nicolas Ferre
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