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b515d7ae0d
Tegra 3 has UART-E exposable via SD card slot which may be handy for debugging. This change only adds funcmux part, to use UART-E on the device you additionally would need: - set stdout-path to serial@70006400 (uarte) - configure sdmmc1_dat3_py4 and sdmmc1_dat2_py5 pinmux for uarte - disable or remove sdhci@7800000 node - enable CONFIG_TEGRA_ENABLE_UARTE in defconfig - set CFG_SYS_NS16550_COM to NV_PA_APB_UARTE_BASE in device header Signed-off-by: Jonas Schwöbel <jonasschwoebel@yahoo.de> Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
66 lines
1.7 KiB
C
66 lines
1.7 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (c) 2010-2012, NVIDIA CORPORATION. All rights reserved.
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*/
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/* Tegra30 high-level function multiplexing */
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#include <log.h>
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#include <asm/arch/clock.h>
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#include <asm/arch/funcmux.h>
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#include <asm/arch/pinmux.h>
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int funcmux_select(enum periph_id id, int config)
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{
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int bad_config = config != FUNCMUX_DEFAULT;
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switch (id) {
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case PERIPH_ID_UART1:
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switch (config) {
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case FUNCMUX_UART1_ULPI:
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pinmux_set_func(PMUX_PINGRP_ULPI_DATA0_PO1,
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PMUX_FUNC_UARTA);
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pinmux_set_func(PMUX_PINGRP_ULPI_DATA1_PO2,
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PMUX_FUNC_UARTA);
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pinmux_set_func(PMUX_PINGRP_ULPI_DATA2_PO3,
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PMUX_FUNC_UARTA);
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pinmux_set_func(PMUX_PINGRP_ULPI_DATA3_PO4,
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PMUX_FUNC_UARTA);
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pinmux_tristate_disable(PMUX_PINGRP_ULPI_DATA0_PO1);
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pinmux_tristate_disable(PMUX_PINGRP_ULPI_DATA1_PO2);
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pinmux_tristate_disable(PMUX_PINGRP_ULPI_DATA2_PO3);
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pinmux_tristate_disable(PMUX_PINGRP_ULPI_DATA3_PO4);
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break;
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}
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break;
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case PERIPH_ID_UART5:
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switch (config) {
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case FUNCMUX_UART5_SDMMC1:
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pinmux_set_func(PMUX_PINGRP_SDMMC1_DAT3_PY4,
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PMUX_FUNC_UARTE);
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pinmux_set_func(PMUX_PINGRP_SDMMC1_DAT2_PY5,
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PMUX_FUNC_UARTE);
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pinmux_set_io(PMUX_PINGRP_SDMMC1_DAT3_PY4, PMUX_PIN_OUTPUT);
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pinmux_set_io(PMUX_PINGRP_SDMMC1_DAT2_PY5, PMUX_PIN_INPUT);
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pinmux_tristate_disable(PMUX_PINGRP_SDMMC1_DAT3_PY4);
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pinmux_tristate_disable(PMUX_PINGRP_SDMMC1_DAT2_PY5);
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break;
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}
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break;
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/* Add other periph IDs here as needed */
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default:
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debug("%s: invalid periph_id %d", __func__, id);
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return -1;
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}
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if (bad_config) {
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debug("%s: invalid config %d for periph_id %d", __func__,
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config, id);
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return -1;
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}
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return 0;
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}
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