Hi, This improves perf on imx53 by adding support for enabling the Secure Debug Enable Register (SDER) SUNIDEN bit. This unlocks new functionality: ppd before patchset# perf stat -e cycles,instructions sleep 1 2>&1 | grep instructions 0 instructions # 0.00 insn per cycle ppd after patchset# perf stat -e cycles,instructions sleep 1 2>&1 | grep instructions 177864 instructions # 0.05 insn per cycle Changes since PATCHv1: * Update DTS patch to reference imx53.dtsi's pmu node * Remove a superfluous newline in first patch -- Sebastian Peter Senna Tschudin (2): ARM: imx53: add SoC specific PMU setup ARM: dts: imx53: PPD: Enable secure-reg-access Sebastian Reichel (1): drivers/perf: arm_pmu: Add platform hardware setup hooks. arch/arm/boot/dts/imx53-ppd.dts | 4 +++ arch/arm/boot/dts/imx53.dtsi | 2 +- arch/arm/mach-imx/mach-imx53.c | 68 +++++++++++++++++++++++++++++++++++++++++ drivers/perf/arm_pmu.c | 12 ++++++++ include/linux/perf/arm_pmu.h | 5 +++ 5 files changed, 90 insertions(+), 1 deletion(-) -- 2.15.1 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html