Subject: [PATCH v2 01/12] at91: dt: Add at91sam9261 dt SoC support

From: [email-masked] (Nicolas Ferre)
Date: Tue, 14 Jan 2014 18:01:15 +0100

On 09/01/2014 13:31, Jean-Jacques Hiblot :
> This patch adds the basics to support the Device Tree on a sam9261-based platform
> 
> Signed-off-by: Jean-Jacques Hiblot <[email-masked]>
> ---
>  arch/arm/boot/dts/at91sam9261.dtsi | 476 +++++++++++++++++++++++++++++++++++++
>  arch/arm/mach-at91/at91sam9261.c   |  15 ++
>  2 files changed, 491 insertions(+)
>  create mode 100644 arch/arm/boot/dts/at91sam9261.dtsi
> 
> diff --git a/arch/arm/boot/dts/at91sam9261.dtsi b/arch/arm/boot/dts/at91sam9261.dtsi
> new file mode 100644
> index 0000000..773c3d6
> --- /dev/null
> +++ b/arch/arm/boot/dts/at91sam9261.dtsi
> @@ -0,0 +1,476 @@
> +/*
> + * at91sam9261.dtsi - Device Tree Include file for AT91SAM9261 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;

I know that it is not always done but can you please sort all nodes by
ascending address order? It is always simple to deal with node additions
when sorted this way.

> +
> +			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 */

You may have to remove comments for pin descriptions. It is not needed
anymore with pre-processor macros.

> +							 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";

isn't it "atmel,at91sam9260-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/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),

Yes, this is where I would like the CCF to be implemented...

>  };
>  
>  static struct clk_lookup usart_clocks_lookups[] = {
> 

-- 
Nicolas Ferre