GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

source/trusted-firmware/trusted-firmware-a-2.8/drivers/st/ddr/stm32mp1_ddr_helpers.c

@@ -0,0 +1,26 @@
+/*
+ * Copyright (c) 2017-2022, STMicroelectronics - All Rights Reserved
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <drivers/st/stm32mp1_ddr_helpers.h>
+#include <lib/mmio.h>
+
+#include <platform_def.h>
+
+void ddr_enable_clock(void)
+{
+	stm32mp1_clk_rcc_regs_lock();
+
+	mmio_setbits_32(stm32mp_rcc_base() + RCC_DDRITFCR,
+			RCC_DDRITFCR_DDRC1EN |
+#if STM32MP_DDR_DUAL_AXI_PORT
+			RCC_DDRITFCR_DDRC2EN |
+#endif
+			RCC_DDRITFCR_DDRPHYCEN |
+			RCC_DDRITFCR_DDRPHYCAPBEN |
+			RCC_DDRITFCR_DDRCAPBEN);
+
+	stm32mp1_clk_rcc_regs_unlock();
+}