[PATCH v4 6/7] arm/imx6q: add device tree machine support

[jamie@jamieiles.com (Jamie Iles)]

Hi Shawn,

On Wed, Sep 28, 2011 at 05:06:47PM +0800, Shawn Guo wrote:
> It adds generic device tree based machine support for imx6q.
> 
> Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
> ---
[...]
> diff --git a/arch/arm/mach-imx/mach-imx6q.c 
> b/arch/arm/mach-imx/mach-imx6q.c
> new file mode 100644
> index 0000000..8bf5fa3
> --- /dev/null
> +++ b/arch/arm/mach-imx/mach-imx6q.c
[...]
> +static void __init imx6q_gpio_add_irq_domain(struct device_node *np,
> +				struct device_node *interrupt_parent)
> +{
> +	static int gpio_irq_base = MXC_GPIO_IRQ_START + ARCH_NR_GPIOS -
> +				   32 * 7; /* imx6q gets 7 gpio ports */
> +
> +	irq_domain_add_simple(np, gpio_irq_base);
> +	gpio_irq_base += 32;

Doesn't this rely on imx6q_gpio_add_irq_domain() being called for each 
gpio bank in the order that they appear in the device tree (and that the 
dt is correctly ordered)?

> +}
> +
> +static const struct of_device_id imx6q_irq_match[] __initconst = {
> +	{ .compatible = "arm,cortex-a9-gic", .data = gic_of_init, },
> +	{ .compatible = "fsl,imx6q-gpio", .data = imx6q_gpio_add_irq_domain, },
> +	{ /* sentinel */ }
> +};
> +
> +static void __init imx6q_init_irq(void)
> +{
> +	l2x0_of_init(0, ~0UL);
> +	imx_src_init();
> +	imx_gpc_init();
> +	of_irq_init(imx6q_irq_match);
> +}

Jamie