Subject: [PATCH 1/6] Basic Device Tree support for the at91sam9261

From: [email-masked] (boris brezillon)
Date: Fri, 03 Jan 2014 00:30:35 +0100

Hello JJ,

On 31/12/2013 17:32, jjhiblot at traphandler.com wrote:
> From: jean-jacques hiblot <[email-masked]>
>
> This patch implements the basics to boot a at91sam9261ek with a dt-enabled
> kernel (at91_dt_defconfig).
> Only dbgu, nand and watchdog are described in the DT.
>
> Signed-off-by: Jean-Jacques Hiblot <[email-masked]>
> ---
>   arch/arm/boot/dts/at91sam9261.dtsi       | 476 +++++++++++++++++++++++++++++++
>   arch/arm/boot/dts/at91sam9261ek.dts      |  75 +++++
>   arch/arm/mach-at91/at91sam9261.c         |  15 +
>   arch/arm/mach-at91/at91sam9261_devices.c |  18 ++

Just a nitpick, but I guess it would be cleaner to split this patch:
1) add a91sam9261 dt SoC support
2) move at91sam9261ek board to dt

>   4 files changed, 584 insertions(+)
>   create mode 100644 arch/arm/boot/dts/at91sam9261.dtsi
>   create mode 100644 arch/arm/boot/dts/at91sam9261ek.dts
>
> diff --git a/arch/arm/boot/dts/at91sam9261.dtsi b/arch/arm/boot/dts/at91sam9261.dtsi
> new file mode 100644
> index 0000000..ce23d7d
> --- /dev/null
> +++ b/arch/arm/boot/dts/at91sam9261.dtsi
> @@ -0,0 +1,476 @@
> +/*
> + * at91sam9261.dtsi - Device Tree Include file for AT91SAM9263 family SoC
> + *
> + *  Copyright (C) 2013 Jean-Jacques Hiblot <[email-masked]>
> + *
> + * Licensed under GPLv2 only.
> + */
> +
> +#include "skeleton.dtsi"
> +#include <dt-bindings/pinctrl/at91.h>
> +#include <dt-bindings/interrupt-controller/irq.h>
> +#include <dt-bindings/gpio/gpio.h>
> +
> +/ {
> +	model = "Atmel AT91SAM9261 family SoC";
> +	compatible = "atmel,at91sam9261";
> +	interrupt-parent = <&aic>;
> +
> +	aliases {
> +		serial0 = &dbgu;
> +		serial1 = &usart0;
> +		serial2 = &usart1;
> +		serial3 = &usart2;
> +		gpio0 = &pioA;
> +		gpio1 = &pioB;
> +		gpio2 = &pioC;
> +		tcb0 = &tcb0;
> +		i2c0 = &i2c0;
> +		ssc0 = &ssc0;
> +		ssc1 = &ssc1;
> +	};
> +	cpus {
> +		#address-cells = <0>;
> +		#size-cells = <0>;
> +
> +		cpu {
> +			compatible = "arm,arm926ej-s";
> +			device_type = "cpu";
> +		};
> +	};
> +
> +	memory {
> +		reg = <0x20000000 0x08000000>;
> +	};
> +
> +	ahb {
> +		compatible = "simple-bus";
> +		#address-cells = <1>;
> +		#size-cells = <1>;
> +		ranges;
> +
> +		apb {
> +			compatible = "simple-bus";
> +			#address-cells = <1>;
> +			#size-cells = <1>;
> +			ranges;
> +
> +			aic: interrupt-controller at fffff000 {
> +				#interrupt-cells = <3>;
> +				compatible = "atmel,at91rm9200-aic";
> +				interrupt-controller;
> +				reg = <0xfffff000 0x200>;
> +				atmel,external-irqs = <29 30 31>;
> +			};
> +
> +			pmc: pmc at fffffc00 {
> +				compatible = "atmel,at91rm9200-pmc";
> +				reg = <0xfffffc00 0x100>;
> +			};
> +
> +			ramc: ramc at ffffea00 {
> +				compatible = "atmel,at91sam9260-sdramc";
> +				reg = <0xffffea00 0x200>;
> +			};
> +
> +			pit: timer at fffffd30 {
> +				compatible = "atmel,at91sam9260-pit";
> +				reg = <0xfffffd30 0xf>;
> +				interrupts = <1 IRQ_TYPE_LEVEL_HIGH 7>;
> +			};
> +
> +			tcb0: timer at fffa0000 {
> +				compatible = "atmel,at91rm9200-tcb";
> +				reg = <0xfffa0000 0x100>;
> +				interrupts = < 17 IRQ_TYPE_LEVEL_HIGH 0
> +					18 IRQ_TYPE_LEVEL_HIGH 0
> +					19 IRQ_TYPE_LEVEL_HIGH 0
> +					>;
> +				status = "disabled";
> +			};
> +
> +			rstc at fffffd00 {
> +				compatible = "atmel,at91sam9260-rstc";
> +				reg = <0xfffffd00 0x10>;
> +			};
> +
> +			shdwc at fffffd10 {
> +				compatible = "atmel,at91sam9260-shdwc";
> +				reg = <0xfffffd10 0x10>;
> +			};
> +
> +			pinctrl at fffff400 {
> +				#address-cells = <1>;
> +				#size-cells = <1>;
> +				compatible = "atmel,at91rm9200-pinctrl", "simple-bus";
> +				ranges = <0xfffff400 0xfffff400 0xa00>;
> +
> +				atmel,mux-mask = <
> +				      /*    A         B     */
> +				       0xffffffff 0xfffffff7  /* pioA */
> +				       0xffffffff 0xfffffff4  /* pioB */
> +				       0xffffffff 0xffffff07  /* pioC */
> +				      >;
> +
> +				/* shared pinctrl settings */
> +				dbgu {
> +					pinctrl_dbgu: dbgu-0 {
> +						atmel,pins =
> +							<AT91_PIOA 9  AT91_PERIPH_A AT91_PINCTRL_NONE	        /* PA9  periph A */
> +							 AT91_PIOA 10 AT91_PERIPH_A AT91_PINCTRL_PULL_UP>;	/* PA10 periph A with pullup */
> +					};
> +				};
> +
> +				usart0 {
> +					pinctrl_usart0: usart0-0 {
> +						atmel,pins =
> +							<AT91_PIOC 8 AT91_PERIPH_A AT91_PINCTRL_PULL_UP	/* PC8 periph A with pullup */
> +							 AT91_PIOC 9 AT91_PERIPH_A AT91_PINCTRL_NONE>;	/* PC9 periph A */
> +					};
> +
> +					pinctrl_usart0_rts: usart0_rts-0 {
> +						atmel,pins =
> +							<AT91_PIOC 10 AT91_PERIPH_A AT91_PINCTRL_NONE>;	/* PC10 periph A */
> +					};
> +
> +					pinctrl_usart0_cts: usart0_cts-0 {
> +						atmel,pins =
> +							<AT91_PIOC 11 AT91_PERIPH_A AT91_PINCTRL_NONE>;	/* PC11 periph A */
> +					};
> +				};
> +
> +				usart1 {
> +					pinctrl_usart1: usart1-0 {
> +						atmel,pins =
> +							<AT91_PIOC 12 AT91_PERIPH_A AT91_PINCTRL_PULL_UP	/* PC12 periph A with pullup */
> +							 AT91_PIOC 13 AT91_PERIPH_A AT91_PINCTRL_NONE>;		/* PC13 periph A */
> +					};
> +
> +					pinctrl_usart1_rts: usart1_rts-0 {
> +						atmel,pins =
> +							<AT91_PIOA 12 AT91_PERIPH_B AT91_PINCTRL_NONE>;	/* PA12 periph B */
> +					};
> +
> +					pinctrl_usart1_cts: usart1_cts-0 {
> +						atmel,pins =
> +							<AT91_PIOA 13 AT91_PERIPH_B AT91_PINCTRL_NONE>;	/* PA13 periph B */
> +					};
> +				};
> +
> +				usart2 {
> +					pinctrl_usart2: usart2-0 {
> +						atmel,pins =
> +							<AT91_PIOC 14 AT91_PERIPH_A AT91_PINCTRL_PULL_UP	/* PC14 periph A with pullup */
> +							 AT91_PIOC 15 AT91_PERIPH_A AT91_PINCTRL_NONE>;		/* PC15 periph A */
> +					};
> +
> +					pinctrl_usart2_rts: usart2_rts-0 {
> +						atmel,pins =
> +							<AT91_PIOA 15 AT91_PERIPH_B AT91_PINCTRL_NONE>;	/* PA15 periph B */
> +					};
> +
> +					pinctrl_usart2_cts: usart2_cts-0 {
> +						atmel,pins =
> +							<AT91_PIOA 16 AT91_PERIPH_B AT91_PINCTRL_NONE>;	/* PA16 periph B */
> +					};
> +				};
> +
> +				nand {
> +					pinctrl_nand: nand-0 {
> +						atmel,pins =
> +							<AT91_PIOC 15 AT91_PERIPH_GPIO AT91_PINCTRL_PULL_UP	/* PC15 gpio RDY pin pull_up*/
> +							 AT91_PIOC 14 AT91_PERIPH_GPIO AT91_PINCTRL_PULL_UP>;	/* PC14 gpio enable pin pull_up */
> +					};
> +				};
> +
> +				mmc0 {
> +					pinctrl_mmc0_clk: mmc0_clk-0 {
> +						atmel,pins =
> +							<AT91_PIOA 2 AT91_PERIPH_B AT91_PINCTRL_NONE>;	/* PA2 periph B */
> +					};
> +
> +					pinctrl_mmc0_slot0_cmd_dat0: mmc0_slot0_cmd_dat0-0 {
> +						atmel,pins =
> +							<AT91_PIOA 1 AT91_PERIPH_B AT91_PINCTRL_PULL_UP		/* PA1 periph B with pullup */
> +							 AT91_PIOA 0 AT91_PERIPH_B AT91_PINCTRL_PULL_UP>;	/* PA0 periph B with pullup */
> +					};
> +
> +					pinctrl_mmc0_slot0_dat1_3: mmc0_slot0_dat1_3-0 {
> +						atmel,pins =
> +							<AT91_PIOA 4 AT91_PERIPH_B AT91_PINCTRL_PULL_UP		/* PA4 periph B with pullup */
> +							 AT91_PIOA 5 AT91_PERIPH_B AT91_PINCTRL_PULL_UP		/* PA5 periph B with pullup */
> +							 AT91_PIOA 6 AT91_PERIPH_B AT91_PINCTRL_PULL_UP>;	/* PA6 periph B with pullup */
> +					};
> +					};
> +
> +				ssc0 {
> +					pinctrl_ssc0_tx: ssc0_tx-0 {
> +						atmel,pins =
> +							<AT91_PIOB 21 AT91_PERIPH_A AT91_PINCTRL_NONE	/* PB21 periph A */
> +							 AT91_PIOB 22 AT91_PERIPH_A AT91_PINCTRL_NONE	/* PB22 periph A */
> +							 AT91_PIOB 23 AT91_PERIPH_A AT91_PINCTRL_NONE>;	/* PB23 periph A */
> +					};
> +
> +					pinctrl_ssc0_rx: ssc0_rx-0 {
> +						atmel,pins =
> +							<AT91_PIOB 24 AT91_PERIPH_A AT91_PINCTRL_NONE	/* PB24 periph A */
> +							 AT91_PIOB 25 AT91_PERIPH_A AT91_PINCTRL_NONE	/* PB25 periph A */
> +							 AT91_PIOB 26 AT91_PERIPH_A AT91_PINCTRL_NONE>;	/* PB26 periph A */
> +					};
> +				};
> +
> +				ssc1 {
> +					pinctrl_ssc1_tx: ssc1_tx-0 {
> +						atmel,pins =
> +							<AT91_PIOA 17 AT91_PERIPH_B AT91_PINCTRL_NONE	/* PA17 periph B */
> +							 AT91_PIOA 18 AT91_PERIPH_B AT91_PINCTRL_NONE	/* PA18 periph B */
> +							 AT91_PIOA 19 AT91_PERIPH_B AT91_PINCTRL_NONE>;	/* PA19 periph B */
> +					};
> +
> +					pinctrl_ssc1_rx: ssc1_rx-0 {
> +						atmel,pins =
> +							<AT91_PIOA 20 AT91_PERIPH_B AT91_PINCTRL_NONE	/* PA20 periph B */
> +							 AT91_PIOA 21 AT91_PERIPH_B AT91_PINCTRL_NONE	/* PA21 periph B */
> +							 AT91_PIOA 22 AT91_PERIPH_B AT91_PINCTRL_NONE>;	/* PA22 periph B */
> +					};
> +				};
> +
> +				spi0 {
> +					pinctrl_spi0: spi0-0 {
> +						atmel,pins =
> +							<AT91_PIOA 0 AT91_PERIPH_A AT91_PINCTRL_NONE	/* PA0 periph A SPI0_MISO pin */
> +							 AT91_PIOA 1 AT91_PERIPH_A AT91_PINCTRL_NONE	/* PA1 periph A SPI0_MOSI pin */
> +							 AT91_PIOA 2 AT91_PERIPH_A AT91_PINCTRL_NONE>;	/* PA2 periph A SPI0_SPCK pin */
> +					};
> +					};
> +
> +				spi1 {
> +					pinctrl_spi1: spi1-0 {
> +						atmel,pins =
> +							<AT91_PIOB 30 AT91_PERIPH_A AT91_PINCTRL_NONE	/* PB30 periph A SPI1_MISO pin */
> +							 AT91_PIOB 31 AT91_PERIPH_A AT91_PINCTRL_NONE	/* PB31 periph A SPI1_MOSI pin */
> +							 AT91_PIOB 29 AT91_PERIPH_A AT91_PINCTRL_NONE>;	/* PB29 periph A SPI1_SPCK pin */
> +					};
> +				};
> +
> +				tcb0 {
> +					pinctrl_tcb0_tclk0: tcb0_tclk0-0 {
> +						atmel,pins = <AT91_PIOC 16 AT91_PERIPH_B AT91_PINCTRL_NONE>;
> +					};
> +
> +					pinctrl_tcb0_tclk1: tcb0_tclk1-0 {
> +						atmel,pins = <AT91_PIOC 17 AT91_PERIPH_B AT91_PINCTRL_NONE>;
> +					};
> +
> +					pinctrl_tcb0_tclk2: tcb0_tclk2-0 {
> +						atmel,pins = <AT91_PIOC 18 AT91_PERIPH_B AT91_PINCTRL_NONE>;
> +					};
> +
> +					pinctrl_tcb0_tioa0: tcb0_tioa0-0 {
> +						atmel,pins = <AT91_PIOC 19 AT91_PERIPH_B AT91_PINCTRL_NONE>;
> +					};
> +
> +					pinctrl_tcb0_tioa1: tcb0_tioa1-0 {
> +						atmel,pins = <AT91_PIOC 21 AT91_PERIPH_B AT91_PINCTRL_NONE>;
> +					};
> +
> +					pinctrl_tcb0_tioa2: tcb0_tioa2-0 {
> +						atmel,pins = <AT91_PIOC 23 AT91_PERIPH_B AT91_PINCTRL_NONE>;
> +					};
> +
> +					pinctrl_tcb0_tiob0: tcb0_tiob0-0 {
> +						atmel,pins = <AT91_PIOC 20 AT91_PERIPH_B AT91_PINCTRL_NONE>;
> +					};
> +
> +					pinctrl_tcb0_tiob1: tcb0_tiob1-0 {
> +						atmel,pins = <AT91_PIOC 22 AT91_PERIPH_B AT91_PINCTRL_NONE>;
> +					};
> +
> +					pinctrl_tcb0_tiob2: tcb0_tiob2-0 {
> +						atmel,pins = <AT91_PIOC 24 AT91_PERIPH_B AT91_PINCTRL_NONE>;
> +					};
> +				};
> +
> +				pioA: gpio at fffff400 {
> +					compatible = "atmel,at91rm9200-gpio";
> +					reg = <0xfffff400 0x200>;
> +					interrupts = <2 IRQ_TYPE_LEVEL_HIGH 1>;
> +					#gpio-cells = <2>;
> +					gpio-controller;
> +					interrupt-controller;
> +					#interrupt-cells = <2>;
> +				};
> +
> +				pioB: gpio at fffff600 {
> +					compatible = "atmel,at91rm9200-gpio";
> +					reg = <0xfffff600 0x200>;
> +					interrupts = <3 IRQ_TYPE_LEVEL_HIGH 1>;
> +					#gpio-cells = <2>;
> +					gpio-controller;
> +					interrupt-controller;
> +					#interrupt-cells = <2>;
> +				};
> +
> +				pioC: gpio at fffff800 {
> +					compatible = "atmel,at91rm9200-gpio";
> +					reg = <0xfffff800 0x200>;
> +					interrupts = <4 IRQ_TYPE_LEVEL_HIGH 1>;
> +					#gpio-cells = <2>;
> +					gpio-controller;
> +					interrupt-controller;
> +					#interrupt-cells = <2>;
> +				};
> +			};
> +
> +			dbgu: serial at fffff200 {
> +				compatible = "atmel,at91sam9260-usart";
> +				reg = <0xfffff200 0x200>;
> +				interrupts = <1 IRQ_TYPE_LEVEL_HIGH 7>;
> +				pinctrl-names = "default";
> +				pinctrl-0 = <&pinctrl_dbgu>;
> +				status = "disabled";
> +			};
> +
> +			usart0: serial at fffb0000 {
> +				compatible = "atmel,at91sam9260-usart";
> +				reg = <0xfffb0000 0x200>;
> +				interrupts = <6 IRQ_TYPE_LEVEL_HIGH 5>;
> +				atmel,use-dma-rx;
> +				atmel,use-dma-tx;
> +				pinctrl-names = "default";
> +				pinctrl-0 = <&pinctrl_usart0>;
> +				status = "disabled";
> +			};
> +
> +			usart1: serial at ffffb400 {
> +				compatible = "atmel,at91sam9260-usart";
> +				reg = <0xfffb4000 0x200>;
> +				interrupts = <7 IRQ_TYPE_LEVEL_HIGH 5>;
> +				atmel,use-dma-rx;
> +				atmel,use-dma-tx;
> +				pinctrl-names = "default";
> +				pinctrl-0 = <&pinctrl_usart1>;
> +				status = "disabled";
> +			};
> +
> +			usart2: serial at fff94000 {
> +				compatible = "atmel,at91sam9260-usart";
> +				reg = <0xfffb8000 0x200>;
> +				interrupts = <8 IRQ_TYPE_LEVEL_HIGH 5>;
> +				atmel,use-dma-rx;
> +				atmel,use-dma-tx;
> +				pinctrl-names = "default";
> +				pinctrl-0 = <&pinctrl_usart2>;
> +				status = "disabled";
> +			};
> +
> +			ssc0: ssc at fffbc000 {
> +				compatible = "atmel,at91rm9200-ssc";
> +				reg = <0xfffbc000 0x4000>;
> +				interrupts = <14 IRQ_TYPE_LEVEL_HIGH 5>;
> +				pinctrl-names = "default";
> +				pinctrl-0 = <&pinctrl_ssc0_tx &pinctrl_ssc0_rx>;
> +				status = "disabled";
> +			};
> +
> +			ssc1: ssc at fffc0000 {
> +				compatible = "atmel,at91rm9200-ssc";
> +				reg = <0xfffc0000 0x4000>;
> +				interrupts = <15 IRQ_TYPE_LEVEL_HIGH 5>;
> +				pinctrl-names = "default";
> +				pinctrl-0 = <&pinctrl_ssc1_tx &pinctrl_ssc1_rx>;
> +				status = "disabled";
> +			};
> +
> +			usb1: gadget at fffa4000 {
> +				compatible = "atmel,at91rm9200-udc";
> +				reg = <0xfffa4000 0x4000>;
> +				interrupts = <10 IRQ_TYPE_LEVEL_HIGH 2>;
> +				status = "disabled";
> +			};
> +
> +			i2c0: i2c at fffac000 {
> +				compatible = "atmel,at91sam9261-i2c";
> +				reg = <0xfffac000 0x100>;
> +				interrupts = <11 IRQ_TYPE_LEVEL_HIGH 6>;
> +				#address-cells = <1>;
> +				#size-cells = <0>;
> +				status = "disabled";
> +			};
> +
> +			mmc0: mmc at fffa8000 {
> +				compatible = "atmel,hsmci";
> +				reg = <0xfffa8000 0x600>;
> +				interrupts = <9 IRQ_TYPE_LEVEL_HIGH 0>;
> +				#address-cells = <1>;
> +				#size-cells = <0>;
> +				status = "disabled";
> +			};
> +
> +			watchdog at fffffd40 {
> +				compatible = "atmel,at91sam9260-wdt";
> +				reg = <0xfffffd40 0x10>;
> +				status = "disabled";
> +			};
> +
> +			spi0: spi at fffc8000 {
> +				#address-cells = <1>;
> +				#size-cells = <0>;
> +				compatible = "atmel,at91rm9200-spi";
> +				reg = <0xfffc8000 0x200>;
> +				interrupts = <12 IRQ_TYPE_LEVEL_HIGH 3>;
> +				pinctrl-names = "default";
> +				pinctrl-0 = <&pinctrl_spi0>;
> +				status = "disabled";
> +			};
> +
> +			spi1: spi at fffcc000 {
> +				#address-cells = <1>;
> +				#size-cells = <0>;
> +				compatible = "atmel,at91rm9200-spi";
> +				reg = <0xfffcc000 0x200>;
> +				interrupts = <13 IRQ_TYPE_LEVEL_HIGH 3>;
> +				pinctrl-names = "default";
> +				pinctrl-0 = <&pinctrl_spi1>;
> +				status = "disabled";
> +			};
> +		};
> +
> +		nand0: nand at 40000000 {
> +			compatible = "atmel,at91rm9200-nand";
> +			#address-cells = <1>;
> +			#size-cells = <1>;
> +			reg = <0x40000000 0x10000000>;
> +			atmel,nand-addr-offset = <22>;
> +			atmel,nand-cmd-offset = <21>;
> +			pinctrl-names = "default";
> +			pinctrl-0 = <&pinctrl_nand>;
> +
> +			gpios = <&pioC 15 GPIO_ACTIVE_HIGH
> +				&pioC 14 GPIO_ACTIVE_HIGH
> +				0
> +				>;
> +			status = "disabled";
> +		};
> +
> +		usb0: ohci at 00500000 {
> +			compatible = "atmel,at91rm9200-ohci", "usb-ohci";
> +			reg = <0x00500000 0x100000>;
> +			interrupts = <20 IRQ_TYPE_LEVEL_HIGH 2>;
> +			status = "disabled";
> +		};
> +	};
> +
> +	i2c at 0 {
> +		compatible = "i2c-gpio";
> +		gpios = <&pioA 7 GPIO_ACTIVE_HIGH /* sda */
> +			 &pioA 8 GPIO_ACTIVE_HIGH /* scl */
> +			>;
> +		i2c-gpio,sda-open-drain;
> +		i2c-gpio,scl-open-drain;
> +		i2c-gpio,delay-us = <2>;	/* ~100 kHz */
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +		status = "disabled";
> +	};
> +};
> diff --git a/arch/arm/boot/dts/at91sam9261ek.dts b/arch/arm/boot/dts/at91sam9261ek.dts
> new file mode 100644
> index 0000000..f3d22a9
> --- /dev/null
> +++ b/arch/arm/boot/dts/at91sam9261ek.dts
> @@ -0,0 +1,75 @@
> +/*
> + * at91sam9261ek.dts - Device Tree file for Atmel at91sam9261 reference board
> + *
> + *  Copyright (C) 2013 Jean-Jacques Hiblot <[email-masked]>
> + *
> + * Licensed under GPLv2 only.
> + */
> +/dts-v1/;
> +#include "at91sam9261.dtsi"
> +
> +/ {
> +	model = "Atmel at91sam9261ek";
> +	compatible = "atmel,at91sam9261ek", "atmel,at91sam9261", "atmel,at91sam9";
> +
> +	chosen {
> +		bootargs = "mem=64M console=ttyS0,115200";
> +	};
> +
> +	memory {
> +		reg = <0x20000000 0x4000000>;
> +	};
> +
> +	clocks {
> +		#address-cells = <1>;
> +		#size-cells = <1>;
> +		ranges;
> +
> +		main_clock: clock at 0 {
> +			compatible = "atmel,osc", "fixed-clock";
> +			clock-frequency = <18432000>;
> +		};
> +	};
> +
> +	ahb {
> +		apb {
> +			dbgu: serial at fffff200 {
> +				status = "okay";
> +			};
> +
> +			watchdog at fffffd40 {
> +				status = "okay";
> +			};
> +		};
> +
> +		nand0: nand at 40000000 {
> +			nand-bus-width = <8>;
> +			nand-ecc-mode = "soft";
> +			nand-on-flash-bbt = <1>;
> +			status = "okay";
> +			at91bootstrap at 0 {
> +				label = "at91bootstrap";
> +				reg = <0x0 0x20000>;
> +			};
> +		};
> +	};
> +
> +	leds {
> +		compatible = "gpio-leds";
> +		ds8 {
> +			label = "ds8";
> +			gpios = <&pioA 13 GPIO_ACTIVE_LOW>;
> +			linux,default-trigger = "none";
> +		};
> +		ds7 {
> +			label = "ds7";
> +			gpios = <&pioA 14 GPIO_ACTIVE_LOW>;
> +			linux,default-trigger = "nand-disk";
> +		};
> +		ds1 {
> +			label = "ds1";
> +			gpios = <&pioA 23 GPIO_ACTIVE_LOW>;
> +			linux,default-trigger = "heartbeat";
> +		};
> +	};
> +};

Didn't you forget the at91sam9261ek entry in arch/arm/boot/dts/Makefile ?

> diff --git a/arch/arm/mach-at91/at91sam9261.c b/arch/arm/mach-at91/at91sam9261.c
> index 6276b4c..200d17a 100644
> --- a/arch/arm/mach-at91/at91sam9261.c
> +++ b/arch/arm/mach-at91/at91sam9261.c
> @@ -189,6 +189,21 @@ static struct clk_lookup periph_clocks_lookups[] = {
>   	CLKDEV_CON_ID("pioA", &pioA_clk),
>   	CLKDEV_CON_ID("pioB", &pioB_clk),
>   	CLKDEV_CON_ID("pioC", &pioC_clk),
> +	/* more usart lookup table for DT entries */
> +	CLKDEV_CON_DEV_ID("usart", "fffff200.serial", &mck),
> +	CLKDEV_CON_DEV_ID("usart", "fffb0000.serial", &usart0_clk),
> +	CLKDEV_CON_DEV_ID("usart", "ffffb400.serial", &usart1_clk),
> +	CLKDEV_CON_DEV_ID("usart", "fff94000.serial", &usart2_clk),
> +	/* more tc lookup table for DT entries */
> +	CLKDEV_CON_DEV_ID("t0_clk", "fffa0000.timer", &tc0_clk),
> +	CLKDEV_CON_DEV_ID("hclk", "500000.ohci", &ohci_clk),
> +	CLKDEV_CON_DEV_ID("spi_clk", "fffc8000.spi", &spi0_clk),
> +	CLKDEV_CON_DEV_ID("spi_clk", "fffcc000.spi", &spi1_clk),
> +	CLKDEV_CON_DEV_ID("mci_clk", "fffa8000.mmc", &mmc_clk),
> +	CLKDEV_CON_DEV_ID(NULL, "fffac000.i2c", &twi_clk),
> +	CLKDEV_CON_DEV_ID(NULL, "fffff400.gpio", &pioA_clk),
> +	CLKDEV_CON_DEV_ID(NULL, "fffff600.gpio", &pioB_clk),
> +	CLKDEV_CON_DEV_ID(NULL, "fffff800.gpio", &pioC_clk),
>   };
>

It would be great if you could add dt clk support to at91sam9261 SoC :) 
(see 
https://github.com/at91linux/linux-at91/blob/bbr/at91-3.14-clk/arch/arm/boot/dts/at91sam9x5.dtsi#L87).
But this is antoher story... ;)

>   static struct clk_lookup usart_clocks_lookups[] = {
> diff --git a/arch/arm/mach-at91/at91sam9261_devices.c b/arch/arm/mach-at91/at91sam9261_devices.c
> index b2a3474..2f926d9 100644
> --- a/arch/arm/mach-at91/at91sam9261_devices.c
> +++ b/arch/arm/mach-at91/at91sam9261_devices.c
> @@ -599,8 +599,23 @@ static struct platform_device at91sam9261_tcb_device = {
>   	.num_resources	= ARRAY_SIZE(tcb_resources),
>   };
>
> +#if defined(CONFIG_OF)
> +static struct of_device_id tcb_ids[] = {
> +	{ .compatible = "atmel,at91rm9200-tcb" },
> +	{ /*sentinel*/ }
> +};
> +#endif
>   static void __init at91_add_device_tc(void)
>   {
> +#if defined(CONFIG_OF)
> +	struct device_node *np;
> +
> +	np = of_find_matching_node(NULL, tcb_ids);
> +	if (np) {
> +		of_node_put(np);
> +		return;
> +	}
> +#endif

Why do you need this ?
Isn't this already skipped by the following test 
(if(of_have_populated_dt())) ?

>   	platform_device_register(&at91sam9261_tcb_device);
>   }
>   #else
> @@ -1088,6 +1103,9 @@ void __init at91_add_device_serial(void) {}
>    */
>   static int __init at91_add_standard_devices(void)
>   {
> +	if (of_have_populated_dt())
> +		return 0;
> +
>   	at91_add_device_rtt();
>   	at91_add_device_watchdog();
>   	at91_add_device_tc();
>

Best Regards,

Boris