From: Sean Anderson Date: Thu, 5 Sep 2024 17:18:33 +0000 (-0400) Subject: arm: zynqmp: Enable non-invasive CCI-400 PMU debug X-Git-Url: http://git.dujemihanovic.xyz/%22/img/sics.gif/%22/static/git-favicon.png?a=commitdiff_plain;h=afe2df31577eacbc474661515619fdfb8da44dee;p=u-boot.git arm: zynqmp: Enable non-invasive CCI-400 PMU debug Set NIDEN, enabling non-invasive debug for the CCI-400 PMU. Otherwise, the PMU is effectively disabled. Signed-off-by: Sean Anderson Reviewed-by: Michal Simek Link: https://lore.kernel.org/r/20240905171833.325548-3-sean.anderson@linux.dev Signed-off-by: Michal Simek --- diff --git a/arch/arm/mach-zynqmp/include/mach/hardware.h b/arch/arm/mach-zynqmp/include/mach/hardware.h index eb8fffaf19..49e449ebd6 100644 --- a/arch/arm/mach-zynqmp/include/mach/hardware.h +++ b/arch/arm/mach-zynqmp/include/mach/hardware.h @@ -132,6 +132,9 @@ struct crfapb_regs { #define crfapb_base ((struct crfapb_regs *)ZYNQMP_CRF_APB_BASEADDR) +#define ZYNQMP_CCI_REG_CCI_MISC_CTRL 0xFD5E0040 +#define ZYNQMP_CCI_REG_CCI_MISC_CTRL_NIDEN BIT(1) + #define ZYNQMP_APU_BASEADDR 0xFD5C0000 struct apu_regs { diff --git a/board/xilinx/zynqmp/zynqmp.c b/board/xilinx/zynqmp/zynqmp.c index 56e3b36ca9..20a675c010 100644 --- a/board/xilinx/zynqmp/zynqmp.c +++ b/board/xilinx/zynqmp/zynqmp.c @@ -76,6 +76,10 @@ int __maybe_unused psu_uboot_init(void) writel(0x04920492, ZYNQMP_IOU_SECURE_SLCR); writel(0x00920492, ZYNQMP_IOU_SECURE_SLCR + 4); + /* Enable CCI PMU events */ + writel(ZYNQMP_CCI_REG_CCI_MISC_CTRL_NIDEN, + ZYNQMP_CCI_REG_CCI_MISC_CTRL); + /* Delay is required for clocks to be propagated */ udelay(1000000);