| /* |
| * SPDX-License-Identifier: Apache-2.0 |
| * |
| * Copyright (c) 2020 Linumiz |
| * Author: Saravanan Sekar <saravanan@linumiz.com> |
| */ |
| |
| #include <zephyr/init.h> |
| #include <zephyr/kernel.h> |
| |
| void z_arm_platform_init(void) |
| { |
| SYS_UnlockReg(); |
| |
| /* system clock init */ |
| SystemInit(); |
| |
| /* Enable HXT clock (external XTAL 12MHz) */ |
| CLK_EnableXtalRC(CLK_PWRCTL_HXTEN_Msk); |
| |
| /* Wait for HXT clock ready */ |
| CLK_WaitClockReady(CLK_STATUS_HXTSTB_Msk); |
| |
| /* Set core clock as PLL_FOUT source */ |
| CLK_SetCoreClock(FREQ_192MHZ); |
| |
| /* Set both PCLK0 and PCLK1 as HCLK/2 */ |
| CLK->PCLKDIV = (CLK_PCLKDIV_APB0DIV_DIV2 | CLK_PCLKDIV_APB1DIV_DIV2); |
| |
| SystemCoreClockUpdate(); |
| |
| SYS_LockReg(); |
| } |
