On 17:12 Sun 07 Apr , Johan Hovold wrote:
> Add arch device-tree setup code and DT-nodes for the General Purpose
> Backup Registers (GPBR).
>
> Note that all AT91 SoCs but at91rm9200 have these backup-powered
> registers.
>
> Signed-off-by: Johan Hovold <[email protected]>
> ---
> .../devicetree/bindings/arm/atmel-at91.txt | 4 ++++
> arch/arm/boot/dts/at91sam9260.dtsi | 5 +++++
> arch/arm/boot/dts/at91sam9263.dtsi | 5 +++++
> arch/arm/boot/dts/at91sam9g45.dtsi | 5 +++++
> arch/arm/boot/dts/at91sam9n12.dtsi | 5 +++++
> arch/arm/boot/dts/at91sam9x5.dtsi | 5 +++++
> arch/arm/mach-at91/setup.c | 21
> +++++++++++++++++++++
> 7 files changed, 50 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/arm/atmel-at91.txt
> b/Documentation/devicetree/bindings/arm/atmel-at91.txt
> index 1196290..fe64d0a 100644
> --- a/Documentation/devicetree/bindings/arm/atmel-at91.txt
> +++ b/Documentation/devicetree/bindings/arm/atmel-at91.txt
> @@ -1,6 +1,10 @@
> Atmel AT91 device tree bindings.
> ================================
>
> +General Purpose Backup Registers (GPBR) required properties:
> +- compatible: Should be "atmel,at91sam9260-gpbr"
> +- reg: Should contain register location and length
> +
> PIT Timer required properties:
> - compatible: Should be "atmel,at91sam9260-pit"
> - reg: Should contain registers location and length
> diff --git a/arch/arm/boot/dts/at91sam9260.dtsi
> b/arch/arm/boot/dts/at91sam9260.dtsi
> index cb7bcc5..48ef04d 100644
> --- a/arch/arm/boot/dts/at91sam9260.dtsi
> +++ b/arch/arm/boot/dts/at91sam9260.dtsi
> @@ -87,6 +87,11 @@
> interrupts = <1 4 7>;
> };
>
> + gpbr@fffffd50 {
> + compatible = "atmel,at91sam9260-gpbr";
> + reg = <0xfffffd50 0x10>;
> + };
> +
> tcb0: timer@fffa0000 {
> compatible = "atmel,at91rm9200-tcb";
> reg = <0xfffa0000 0x100>;
> diff --git a/arch/arm/boot/dts/at91sam9263.dtsi
> b/arch/arm/boot/dts/at91sam9263.dtsi
> index 271d4de..e9676ba 100644
> --- a/arch/arm/boot/dts/at91sam9263.dtsi
> +++ b/arch/arm/boot/dts/at91sam9263.dtsi
> @@ -75,6 +75,11 @@
> interrupts = <1 4 7>;
> };
>
> + gpbr@fffffd60 {
> + compatible = "atmel,at91sam9260-gpbr";
> + reg = <0xfffffd60 0x50>;
> + };
> +
> tcb0: timer@fff7c000 {
> compatible = "atmel,at91rm9200-tcb";
> reg = <0xfff7c000 0x100>;
> diff --git a/arch/arm/boot/dts/at91sam9g45.dtsi
> b/arch/arm/boot/dts/at91sam9g45.dtsi
> index 6b1d4ca..d5e37ce 100644
> --- a/arch/arm/boot/dts/at91sam9g45.dtsi
> +++ b/arch/arm/boot/dts/at91sam9g45.dtsi
> @@ -92,6 +92,11 @@
> reg = <0xfffffd10 0x10>;
> };
>
> + gpbr@fffffd60 {
> + compatible = "atmel,at91sam9260-gpbr";
> + reg = <0xfffffd60 0x10>;
> + };
> +
> tcb0: timer@fff7c000 {
> compatible = "atmel,at91rm9200-tcb";
> reg = <0xfff7c000 0x100>;
> diff --git a/arch/arm/boot/dts/at91sam9n12.dtsi
> b/arch/arm/boot/dts/at91sam9n12.dtsi
> index 4801717..ac122a6 100644
> --- a/arch/arm/boot/dts/at91sam9n12.dtsi
> +++ b/arch/arm/boot/dts/at91sam9n12.dtsi
> @@ -85,6 +85,11 @@
> reg = <0xfffffe10 0x10>;
> };
>
> + gpbr@fffffe60 {
> + compatible = "atmel,at91sam9260-gpbr";
> + reg = <0xfffffe60 0x10>;
> + };
> +
> mmc0: mmc@f0008000 {
> compatible = "atmel,hsmci";
> reg = <0xf0008000 0x600>;
> diff --git a/arch/arm/boot/dts/at91sam9x5.dtsi
> b/arch/arm/boot/dts/at91sam9x5.dtsi
> index c461e11..13d069e 100644
> --- a/arch/arm/boot/dts/at91sam9x5.dtsi
> +++ b/arch/arm/boot/dts/at91sam9x5.dtsi
> @@ -88,6 +88,11 @@
> interrupts = <1 4 7>;
> };
>
> + gpbr@fffffe60 {
> + compatible = "atmel,at91sam9260-gpbr";
> + reg = <0xfffffe60 0x10>;
> + };
> +
> tcb0: timer@f8008000 {
> compatible = "atmel,at91sam9x5-tcb";
> reg = <0xf8008000 0x100>;
> diff --git a/arch/arm/mach-at91/setup.c b/arch/arm/mach-at91/setup.c
> index b01f4aa..a525390 100644
> --- a/arch/arm/mach-at91/setup.c
> +++ b/arch/arm/mach-at91/setup.c
> @@ -374,6 +374,26 @@ static void at91_dt_ramc(void)
> of_node_put(np);
> }
>
> +static struct of_device_id gpbr_ids[] = {
> + { .compatible = "atmel,at91sam9260-gpbr", },
> + { /* sentinel */ }
> +};
> +
> +static void at91_dt_gpbr(void)
> +{
> + struct device_node *np;
> +
> + np = of_find_matching_node(NULL, gpbr_ids);
> + if (!np)
> + panic("AT91: failed to find compatible gpbr node in dtb\n");
> +
> + at91_gpbr_base = of_iomap(np, 0);
> + if (!at91_gpbr_base)
> + panic("AT91: Failed to map gpbr registers\n");
> +
> + of_node_put(np);
> +}
binding ok this NO
no global pointer unless no choice
we need a framework
Best Regards,
J.
> +
> static struct of_device_id shdwc_ids[] = {
> { .compatible = "atmel,at91sam9260-shdwc", },
> { .compatible = "atmel,at91sam9rl-shdwc", },
> @@ -468,6 +488,7 @@ void __init at91_dt_initialize(void)
> at91_dt_rstc();
> at91_dt_ramc();
> at91_dt_shdwc();
> + at91_dt_gpbr();
>
> /* Init clock subsystem */
> at91_dt_clock_init();
> --
> 1.8.1.5
>
_______________________________________________
devicetree-discuss mailing list
[email protected]
https://lists.ozlabs.org/listinfo/devicetree-discuss
