| Message ID | 1463066372-13115-9-git-send-email-jonathanh@nvidia.com |
|---|---|
| State | Superseded, archived |
| Delegated to: | Jon Hunter |
| Headers | show |
On Thu, May 12, 2016 at 04:19:31PM +0100, Jon Hunter wrote: > The Tegra AGIC is an interrupt controller that is compatible with the > ARM GIC-400, however, it is a 2nd level controller and requires runtime > power-management because it is outside the main CPU complex. Ideally, > the AGIC would use the existing "arm,gic-400" compatibility string, but > because of the power management requirements it cannot be initialised > early and is initialised by a platform driver. Therefore, to distinguish > between the Tegra AGIC and a normal GIC-400, and to ensure that the > appropriate driver initialises the AGIC, add the compatible string and > clock information for the AGIC to the GIC device-tree binding > documentation. > > Signed-off-by: Jon Hunter <jonathanh@nvidia.com> > --- > Documentation/devicetree/bindings/interrupt-controller/arm,gic.txt | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) Acked-by: Rob Herring <robh@kernel.org> -- To unsubscribe from this list: send the line "unsubscribe linux-tegra" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/Documentation/devicetree/bindings/interrupt-controller/arm,gic.txt b/Documentation/devicetree/bindings/interrupt-controller/arm,gic.txt index 793c20ff8fcc..5393e2a45a42 100644 --- a/Documentation/devicetree/bindings/interrupt-controller/arm,gic.txt +++ b/Documentation/devicetree/bindings/interrupt-controller/arm,gic.txt @@ -21,6 +21,7 @@ Main node required properties: "arm,pl390" "arm,tc11mp-gic" "brcm,brahma-b15-gic" + "nvidia,tegra210-agic" "qcom,msm-8660-qgic" "qcom,msm-qgic2" - interrupt-controller : Identifies the node as an interrupt controller @@ -68,7 +69,7 @@ Optional "ic_clk" (for "arm,arm11mp-gic") "PERIPHCLKEN" (for "arm,cortex-a15-gic") "PERIPHCLK", "PERIPHCLKEN" (for "arm,cortex-a9-gic") - "clk" (for "arm,gic-400") + "clk" (for "arm,gic-400" and "nvidia,tegra210") "gclk" (for "arm,pl390") - power-domains : A phandle and PM domain specifier as defined by bindings of
The Tegra AGIC is an interrupt controller that is compatible with the ARM GIC-400, however, it is a 2nd level controller and requires runtime power-management because it is outside the main CPU complex. Ideally, the AGIC would use the existing "arm,gic-400" compatibility string, but because of the power management requirements it cannot be initialised early and is initialised by a platform driver. Therefore, to distinguish between the Tegra AGIC and a normal GIC-400, and to ensure that the appropriate driver initialises the AGIC, add the compatible string and clock information for the AGIC to the GIC device-tree binding documentation. Signed-off-by: Jon Hunter <jonathanh@nvidia.com> --- Documentation/devicetree/bindings/interrupt-controller/arm,gic.txt | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)