64 lines
1.5 KiB
C
64 lines
1.5 KiB
C
/*
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* Copyright (c) 2019 Linaro Limited
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <device.h>
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#include <init.h>
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#include <kernel.h>
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#include <pinmux.h>
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#include <soc.h>
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#include <sys_io.h>
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#include <gpio/gpio_cmsdk_ahb.h>
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#include "pinmux/pinmux.h"
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#define IOMUX_MAIN_INSEL (0x68 >> 2)
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#define IOMUX_MAIN_OUTSEL (0x70 >> 2)
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#define IOMUX_MAIN_OENSEL (0x78 >> 2)
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#define IOMUX_MAIN_DEFAULT_IN (0x80 >> 2)
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#define IOMUX_ALTF1_INSEL (0x88 >> 2)
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#define IOMUX_ALTF1_OUTSEL (0x90 >> 2)
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#define IOMUX_ALTF1_OENSEL (0x98 >> 2)
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#define IOMUX_ALTF1_DEFAULT_IN (0xA0 >> 2)
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#ifdef CONFIG_TRUSTED_EXECUTION_SECURE
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/*
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* Only configure pins if we are secure. Otherwise secure violation will occur
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*/
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static void arm_musca_b1_pinmux_defaults(void)
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{
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volatile u32_t *scc = (u32_t *)DT_ARM_SCC_BASE_ADDRESS;
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/* there is only altfunc1, so steer all alt funcs to use 1 */
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scc[IOMUX_ALTF1_INSEL] = 0xffff;
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scc[IOMUX_ALTF1_OUTSEL] = 0xffff;
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scc[IOMUX_ALTF1_OENSEL] = 0xffff;
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#if defined(CONFIG_UART_PL011_PORT0)
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/* clear bit 0/1 for GPIO0/1 to steer from ALTF1 */
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scc[IOMUX_MAIN_INSEL] &= ~(BIT(0) | BIT(1));
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scc[IOMUX_MAIN_OUTSEL] &= ~(BIT(0) | BIT(1));
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scc[IOMUX_MAIN_OENSEL] &= ~(BIT(0) | BIT(1));
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#endif
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}
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#else
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static void arm_musca_b1_pinmux_defaults(void)
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{
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}
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#endif
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static int arm_musca_pinmux_init(struct device *port)
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{
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ARG_UNUSED(port);
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arm_musca_b1_pinmux_defaults();
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return 0;
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}
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SYS_INIT(arm_musca_pinmux_init, PRE_KERNEL_1,
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CONFIG_KERNEL_INIT_PRIORITY_DEFAULT);
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