Re: [PATCH v2 03/12] at91: dt: sam9261: Added support for the lcd display

[boris brezillon <b.brezillon@overkiz.com>]

On 09/01/2014 13:31, Jean-Jacques Hiblot wrote:
> Signed-off-by: Jean-Jacques Hiblot <jjhiblot@traphandler.com>
> ---
>   arch/arm/boot/dts/at91sam9261.dtsi  | 37 ++++++++++++++++++++++++++++++++++++-
>   arch/arm/boot/dts/at91sam9261ek.dts | 31 +++++++++++++++++++++++++++++++
>   arch/arm/mach-at91/at91sam9261.c    |  1 +
>   3 files changed, 68 insertions(+), 1 deletion(-)
>
> diff --git a/arch/arm/boot/dts/at91sam9261.dtsi b/arch/arm/boot/dts/at91sam9261.dtsi
> index 773c3d6..cd219b9 100644
> --- a/arch/arm/boot/dts/at91sam9261.dtsi
> +++ b/arch/arm/boot/dts/at91sam9261.dtsi
> @@ -290,7 +290,33 @@
>   						atmel,pins = <AT91_PIOC 24 AT91_PERIPH_B AT91_PINCTRL_NONE>;
>   					};
>   				};
> -
> +				fb {
> +					pinctrl_fb: fb-0 {
> +						atmel,pins =
> +							<AT91_PIOB 1 AT91_PERIPH_A AT91_PINCTRL_NONE	/* PB1 periph A */
> +							 AT91_PIOB 2 AT91_PERIPH_A AT91_PINCTRL_NONE	/* PB2 periph A */
> +							 AT91_PIOB 3 AT91_PERIPH_A AT91_PINCTRL_NONE	/* PB3 periph A */
> +							 AT91_PIOB 7 AT91_PERIPH_A AT91_PINCTRL_NONE	/* PB7 periph A */
> +							 AT91_PIOB 8 AT91_PERIPH_A AT91_PINCTRL_NONE	/* PB8 periph A */
> +							 AT91_PIOB 9 AT91_PERIPH_A AT91_PINCTRL_NONE	/* PB9 periph A */
> +							 AT91_PIOB 10 AT91_PERIPH_A AT91_PINCTRL_NONE	/* PB10 periph A */
> +							 AT91_PIOB 11 AT91_PERIPH_A AT91_PINCTRL_NONE	/* PB11 periph A */
> +							 AT91_PIOB 12 AT91_PERIPH_A AT91_PINCTRL_NONE	/* PB12 periph A */
> +							 AT91_PIOB 15 AT91_PERIPH_A AT91_PINCTRL_NONE	/* PB15 periph A */
> +							 AT91_PIOB 16 AT91_PERIPH_A AT91_PINCTRL_NONE	/* PB16 periph A */
> +							 AT91_PIOB 17 AT91_PERIPH_A AT91_PINCTRL_NONE	/* PB17 periph A */
> +							 AT91_PIOB 18 AT91_PERIPH_A AT91_PINCTRL_NONE	/* PB18 periph A */
> +							 AT91_PIOB 19 AT91_PERIPH_A AT91_PINCTRL_NONE	/* PB19 periph A */
> +							 AT91_PIOB 20 AT91_PERIPH_A AT91_PINCTRL_NONE	/* PB20 periph A */
> +							 AT91_PIOB 23 AT91_PERIPH_B AT91_PINCTRL_NONE	/* PB23 periph B */
> +							 AT91_PIOB 24 AT91_PERIPH_B AT91_PINCTRL_NONE	/* PB24 periph B */
> +							 AT91_PIOB 25 AT91_PERIPH_B AT91_PINCTRL_NONE	/* PB25 periph B */
> +							 AT91_PIOB 26 AT91_PERIPH_B AT91_PINCTRL_NONE	/* PB26 periph B */
> +							 AT91_PIOB 27 AT91_PERIPH_B AT91_PINCTRL_NONE	/* PB27 periph B */
> +							 AT91_PIOB 28 AT91_PERIPH_B AT91_PINCTRL_NONE	/* PB28 periph B */
> +							 >;
> +					};
> +				};
>   				pioA: gpio@fffff400 {
>   					compatible = "atmel,at91rm9200-gpio";
>   					reg = <0xfffff400 0x200>;
> @@ -436,6 +462,15 @@
>   			};
>   		};
>   
> +		fb0: fb@0x00600000 {
> +			compatible = "atmel,at91sam9261-lcdc";
> +			reg = <0x00600000 0x1000>;
> +			interrupts = <21 IRQ_TYPE_LEVEL_HIGH 3>;
> +			pinctrl-names = "default";
> +			pinctrl-0 = <&pinctrl_fb>;
> +			status = "disabled";
> +		};
> +
>   		nand0: nand@40000000 {
>   			compatible = "atmel,at91rm9200-nand";
>   			#address-cells = <1>;
> diff --git a/arch/arm/boot/dts/at91sam9261ek.dts b/arch/arm/boot/dts/at91sam9261ek.dts
> index f3d22a9..03c05fc 100644
> --- a/arch/arm/boot/dts/at91sam9261ek.dts
> +++ b/arch/arm/boot/dts/at91sam9261ek.dts
> @@ -52,6 +52,37 @@
>   				reg = <0x0 0x20000>;
>   			};
>   		};

One more nitpick :
I think this should be taken out in another patch (first 9261 lcdc support,
then ek board lcd def) :p.

> +
> +		fb0: fb@0x00600000 {
> +			display = <&display0>;
> +			status = "okay";
> +			atmel,power-control-gpio = <&pioA 12 GPIO_ACTIVE_LOW>;
> +			display0: display {
> +				bits-per-pixel = <16>;
> +				atmel,lcdcon-backlight;
> +				atmel,dmacon = <0x1>;
> +				atmel,lcdcon2 = <0x80008002>;
> +				atmel,guard-time = <1>;
> +				atmel,lcd-wiring-mode = "BRG";
> +
> +				display-timings {
> +					native-mode = <&timing0>;
> +					timing0: timing0 {
> +						clock-frequency = <4965000>;
> +						hactive = <240>;
> +						vactive = <320>;
> +						hback-porch = <1>;
> +						hfront-porch = <33>;
> +						vback-porch = <1>;
> +						vfront-porch = <0>;
> +						hsync-len = <5>;
> +						vsync-len = <1>;
> +						hsync-active = <1>;
> +						vsync-active = <1>;
> +					};
> +				};
> +			};
> +		};
>   	};
>   
>   	leds {
> diff --git a/arch/arm/mach-at91/at91sam9261.c b/arch/arm/mach-at91/at91sam9261.c
> index 200d17a..a67bfe6 100644
> --- a/arch/arm/mach-at91/at91sam9261.c
> +++ b/arch/arm/mach-at91/at91sam9261.c
> @@ -197,6 +197,7 @@ static struct clk_lookup periph_clocks_lookups[] = {
>   	/* 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("hclk", "600000.fb", &hck1),
>   	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),