From 8f99438b095aaf9b6472a21e2f087483439826da Mon Sep 17 00:00:00 2001 From: Peng Fan Date: Mon, 26 Aug 2019 08:11:49 +0000 Subject: [PATCH] imx8qm: power up SMMU There is SMMU in i.MX8QM. To use SMMU in Linux, need power up it. Signed-off-by: Peng Fan --- arch/arm/mach-imx/imx8/cpu.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/arch/arm/mach-imx/imx8/cpu.c b/arch/arm/mach-imx/imx8/cpu.c index 667f829acd..1a5d811373 100644 --- a/arch/arm/mach-imx/imx8/cpu.c +++ b/arch/arm/mach-imx/imx8/cpu.c @@ -67,6 +67,13 @@ int arch_cpu_init_dm(void) return ret; } + if (is_imx8qm()) { + ret = sc_pm_set_resource_power_mode(-1, SC_R_SMMU, + SC_PM_PW_MODE_ON); + if (ret) + return ret; + } + return 0; } -- 2.39.5