| /* |
| * Copyright (c) 2018 Linaro Limited |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| #include <device.h> |
| #include <init.h> |
| #include <kernel.h> |
| #include <pinmux.h> |
| #include <soc.h> |
| #include <sys_io.h> |
| #include <gpio/gpio_cmsdk_ahb.h> |
| |
| #include "pinmux/pinmux.h" |
| |
| #define IOMUX_MAIN_INSEL (0x30 >> 2) |
| #define IOMUX_MAIN_OUTSEL (0x34 >> 2) |
| #define IOMUX_MAIN_OENSEL (0x38 >> 2) |
| #define IOMUX_MAIN_DEFAULT_IN (0x3c >> 2) |
| #define IOMUX_ALTF1_INSEL (0x40 >> 2) |
| #define IOMUX_ALTF1_OUTSEL (0x44 >> 2) |
| #define IOMUX_ALTF1_OENSEL (0x48 >> 2) |
| #define IOMUX_ALTF1_DEFAULT_IN (0x4c >> 2) |
| |
| #ifdef CONFIG_TRUSTED_EXECUTION_SECURE |
| /* |
| * Only configure pins if we are secure. Otherwise secure violation will occur |
| */ |
| static void arm_musca_pinmux_defaults(void) |
| { |
| volatile u32_t *scc = (u32_t *)DT_ARM_SCC_BASE_ADDRESS; |
| |
| /* there is only altfunc1, so steer all alt funcs to use 1 */ |
| scc[IOMUX_ALTF1_INSEL] = 0xffff; |
| scc[IOMUX_ALTF1_OUTSEL] = 0xffff; |
| scc[IOMUX_ALTF1_OENSEL] = 0xffff; |
| |
| #if defined(CONFIG_UART_PL011_PORT0) |
| /* clear bit 0/1 for GPIO0/1 to steer from ALTF1 */ |
| scc[IOMUX_MAIN_INSEL] &= ~(BIT(0) | BIT(1)); |
| scc[IOMUX_MAIN_OUTSEL] &= ~(BIT(0) | BIT(1)); |
| scc[IOMUX_MAIN_OENSEL] &= ~(BIT(0) | BIT(1)); |
| #endif |
| |
| } |
| #else |
| static void arm_musca_pinmux_defaults(void) |
| { |
| } |
| #endif |
| |
| static int arm_musca_pinmux_init(struct device *port) |
| { |
| ARG_UNUSED(port); |
| |
| arm_musca_pinmux_defaults(); |
| |
| return 0; |
| } |
| |
| SYS_INIT(arm_musca_pinmux_init, PRE_KERNEL_1, |
| CONFIG_KERNEL_INIT_PRIORITY_DEFAULT); |