On Mon, Sep 29, 2014 at 02:47:47PM +0100, Arnd Bergmann wrote:

On Monday 29 September 2014 20:04:49 zhang.lyra at gmail.com wrote:

quoted

+	cpus {
+		#address-cells = <2>;
+		#size-cells = <0>;
+
+		cpu at 0 {
+			device_type = "cpu";
+			compatible = "arm,armv8";
+			reg = <0x0 0x0>;
+			enable-method = "spin-table";
+			cpu-release-addr = <0x0 0x8000fff8>;
+		};

New platforms should avoid using "spin-table" method. Please
change the boot loader to implement PSCI if you can.

As usual, I strongly recommend PSCI here if the CPU supports EL3. It
would solve the cpuidle kernel support as well with the generic cpuidle
driver and the PSCI back-end.

-- 
Catalin