67 lines
1.9 KiB
C
67 lines
1.9 KiB
C
/*
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* Copyright (c) 2019-2020 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 <zephyr/device.h>
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#include <zephyr/init.h>
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#include <zephyr/kernel.h>
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#include <soc.h>
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#include <zephyr/sys/sys_io.h>
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#define IOMUX_MAIN_INSEL (0x868 >> 2)
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#define IOMUX_MAIN_OUTSEL (0x870 >> 2)
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#define IOMUX_MAIN_OENSEL (0x878 >> 2)
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#define IOMUX_MAIN_DEFAULT_IN (0x880 >> 2)
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#define IOMUX_ALTF1_INSEL (0x888 >> 2)
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#define IOMUX_ALTF1_OUTSEL (0x890 >> 2)
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#define IOMUX_ALTF1_OENSEL (0x898 >> 2)
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#define IOMUX_ALTF1_DEFAULT_IN (0x8A0 >> 2)
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#define IOMUX_ALTF2_INSEL (0x8A8 >> 2)
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#define IOMUX_ALTF2_OUTSEL (0x8B0 >> 2)
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#define IOMUX_ALTF2_OENSEL (0x8B8 >> 2)
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#define IOMUX_ALTF2_DEFAULT_IN (0x8C0 >> 2)
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#ifdef CONFIG_TRUSTED_EXECUTION_NONSECURE
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static void arm_musca_s1_pinmux_defaults(void)
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{
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}
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#else
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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_s1_pinmux_defaults(void)
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{
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volatile uint32_t *scc = (uint32_t *)DT_REG_ADDR(DT_INST(0, arm_scc));
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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 DT_NODE_HAS_STATUS_OKAY(DT_NODELABEL(uart0))
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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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/* Enable PINs for LEDS */
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scc[IOMUX_ALTF1_OUTSEL] &= ~(BIT(2) | BIT(3) | BIT(4));
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scc[IOMUX_ALTF1_OENSEL] &= ~(BIT(2) | BIT(3) | BIT(4));
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scc[IOMUX_ALTF2_OUTSEL] &= ~(BIT(2) | BIT(3) | BIT(4));
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scc[IOMUX_ALTF2_OENSEL] &= ~(BIT(2) | BIT(3) | BIT(4));
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}
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#endif
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static int arm_musca_pinmux_init(void)
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{
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arm_musca_s1_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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