On Oct 30, 2013, at 3:25 PM, Stephen Boyd wrote:
> The Krait L1/L2 error reporting device is made up of two
> interrupts, one per-CPU interrupt for the L1 caches and one
> interrupt for the L2 cache.
>
> Cc: Mark Rutland <mark.rutland@xxxxxxx>
> Cc: Kumar Gala <galak@xxxxxxxxxxxxxx>
> Cc: <devicetree@xxxxxxxxxxxxxxx>
> Signed-off-by: Stephen Boyd <sboyd@xxxxxxxxxxxxxx>
> ---
> Documentation/devicetree/bindings/arm/cpus.txt | 49 ++++++++++++++++++++++++++
> 1 file changed, 49 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/arm/cpus.txt b/Documentation/devicetree/bindings/arm/cpus.txt
> index f32494d..0f7b27f 100644
> --- a/Documentation/devicetree/bindings/arm/cpus.txt
> +++ b/Documentation/devicetree/bindings/arm/cpus.txt
> @@ -44,6 +44,8 @@ For the ARM architecture every CPU node must contain the following properties:
> "marvell,mohawk"
> "marvell,xsc3"
> "marvell,xscale"
> + "qcom,scorpion"
> + "qcom,krait"
>
> Example:
>
> @@ -75,3 +77,50 @@ Example:
> reg = <0x101>;
> };
> };
> +
> +If the compatible string contains "qcom,krait" there shall be an interrupts
> +property containing the L1/CPU error interrupt number. There shall also be an
'also be a'
> +l2-cache node containing the following properties:
Is the L1 interrupt not per core L1 cache (even if they are OR together at PIC)?
> +
> + - compatible: Shall contain at least "cache"
> + - cache-level: Must be 2
> + - interrupts: Shall contain the L2 error interrupt
> +
> +Example:
> +
> + cpus {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + interrupts = <1 9 0xf04>;
> + compatible = "qcom,krait";
> +
> + cpu@0 {
> + device_type = "cpu";
> + reg = <0>;
> + next-level-cache = <&L2>;
> + };
> +
> + cpu@1 {
> + device_type = "cpu";
> + reg = <1>;
> + next-level-cache = <&L2>;
> + };
> +
> + cpu@2 {
> + device_type = "cpu";
> + reg = <2>;
> + next-level-cache = <&L2>;
> + };
> +
> + cpu@3 {
> + device_type = "cpu";
> + reg = <3>;
> + next-level-cache = <&L2>;
> + };
> +
> + L2: l2-cache {
> + compatible = "cache";
> + cache-level = <2>;
> + interrupts = <0 2 0x4>;
> + };
> + };
> --
> The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
> hosted by The Linux Foundation
>
--
Employee of Qualcomm Innovation Center, Inc.
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation
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