From 5f77e669df34a3f3426d09563330863289d1a4df Mon Sep 17 00:00:00 2001 From: Ye Li Date: Tue, 26 Jul 2022 16:41:08 +0800 Subject: [PATCH] ddr: imx9: enable Performance monitor counter Add Kconfig for enabling reference events counter in DDRC performance monitor by default Signed-off-by: Ye Li Signed-off-by: Peng Fan --- drivers/ddr/imx/imx9/Kconfig | 6 ++++++ drivers/ddr/imx/imx9/ddr_init.c | 4 ++++ 2 files changed, 10 insertions(+) diff --git a/drivers/ddr/imx/imx9/Kconfig b/drivers/ddr/imx/imx9/Kconfig index a16ddc6..123ad17 100644 --- a/drivers/ddr/imx/imx9/Kconfig +++ b/drivers/ddr/imx/imx9/Kconfig @@ -11,6 +11,12 @@ config IMX9_LPDDR4X help Select the i.MX9 LPDDR4/4X driver support on i.MX9 SOC. +config IMX9_DRAM_PM_COUNTER + bool "imx9 DDRC performance monitor counter" + default y + help + Enable DDR controller performance monitor counter for reference events. + config SAVED_DRAM_TIMING_BASE hex "Define the base address for saved dram timing" help diff --git a/drivers/ddr/imx/imx9/ddr_init.c b/drivers/ddr/imx/imx9/ddr_init.c index 16eac65..8b8ec7f 100644 --- a/drivers/ddr/imx/imx9/ddr_init.c +++ b/drivers/ddr/imx/imx9/ddr_init.c @@ -112,6 +112,10 @@ int ddr_init(struct dram_timing_info *dram_timing) ddrc_config(dram_timing->ddrc_cfg, dram_timing->ddrc_cfg_num); debug("DDRINFO: ddrc config done\n"); +#ifdef CONFIG_IMX9_DRAM_PM_COUNTER + writel(0x200000, REG_DDR_DEBUG_19); +#endif + check_dfi_init_complete(); regval = readl(REG_DDR_SDRAM_CFG); -- 2.7.4