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/* * Copyright (c) 2019 Linaro Limited * * SPDX-License-Identifier: Apache-2.0 */ #include <device.h> #include <init.h> #include <kernel.h> #include <drivers/pinmux.h> #include <soc.h> #include <sys/sys_io.h> #include <gpio/gpio_cmsdk_ahb.h> #include "pinmux/pinmux.h" #define IOMUX_MAIN_INSEL (0x68 >> 2) #define IOMUX_MAIN_OUTSEL (0x70 >> 2) #define IOMUX_MAIN_OENSEL (0x78 >> 2) #define IOMUX_MAIN_DEFAULT_IN (0x80 >> 2) #define IOMUX_ALTF1_INSEL (0x88 >> 2) #define IOMUX_ALTF1_OUTSEL (0x90 >> 2) #define IOMUX_ALTF1_OENSEL (0x98 >> 2) #define IOMUX_ALTF1_DEFAULT_IN (0xA0 >> 2) #define IOMUX_ALTF2_INSEL (0xA8 >> 2) #define IOMUX_ALTF2_OUTSEL (0xB0 >> 2) #define IOMUX_ALTF2_OENSEL (0xB8 >> 2) #define IOMUX_ALTF2_DEFAULT_IN (0xC0 >> 2) #ifdef CONFIG_TRUSTED_EXECUTION_NONSECURE static void arm_musca_b1_pinmux_defaults(void) { } #else /* * Only configure pins if we are secure. Otherwise secure violation will occur */ static void arm_musca_b1_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 /* Enable PINs for LEDS */ scc[IOMUX_ALTF1_OUTSEL] &= ~(BIT(2) | BIT(3) | BIT(4)); scc[IOMUX_ALTF1_OENSEL] &= ~(BIT(2) | BIT(3) | BIT(4)); scc[IOMUX_ALTF2_OUTSEL] &= ~(BIT(2) | BIT(3) | BIT(4)); scc[IOMUX_ALTF2_OENSEL] &= ~(BIT(2) | BIT(3) | BIT(4)); } #endif static int arm_musca_pinmux_init(struct device *port) { ARG_UNUSED(port); arm_musca_b1_pinmux_defaults(); return 0; } SYS_INIT(arm_musca_pinmux_init, PRE_KERNEL_1, CONFIG_KERNEL_INIT_PRIORITY_DEFAULT); |