mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-20 08:58:52 +09:00
299 lines
8.7 KiB
C
299 lines
8.7 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright (c) 2011 The Chromium OS Authors.
|
|
*/
|
|
|
|
/* Tegra20 high-level function multiplexing */
|
|
#include <common.h>
|
|
#include <log.h>
|
|
#include <asm/arch/clock.h>
|
|
#include <asm/arch/funcmux.h>
|
|
#include <asm/arch/pinmux.h>
|
|
|
|
/*
|
|
* The PINMUX macro is used to set up pinmux tables.
|
|
*/
|
|
#define PINMUX(grp, mux, pupd, tri) \
|
|
{PMUX_PINGRP_##grp, PMUX_FUNC_##mux, PMUX_PULL_##pupd, PMUX_TRI_##tri}
|
|
|
|
static const struct pmux_pingrp_config disp1_default[] = {
|
|
PINMUX(LDI, DISPA, NORMAL, NORMAL),
|
|
PINMUX(LHP0, DISPA, NORMAL, NORMAL),
|
|
PINMUX(LHP1, DISPA, NORMAL, NORMAL),
|
|
PINMUX(LHP2, DISPA, NORMAL, NORMAL),
|
|
PINMUX(LHS, DISPA, NORMAL, NORMAL),
|
|
PINMUX(LM0, RSVD4, NORMAL, NORMAL),
|
|
PINMUX(LPP, DISPA, NORMAL, NORMAL),
|
|
PINMUX(LPW0, DISPA, NORMAL, NORMAL),
|
|
PINMUX(LPW2, DISPA, NORMAL, NORMAL),
|
|
PINMUX(LSC0, DISPA, NORMAL, NORMAL),
|
|
PINMUX(LSPI, DISPA, NORMAL, NORMAL),
|
|
PINMUX(LVP1, DISPA, NORMAL, NORMAL),
|
|
PINMUX(LVS, DISPA, NORMAL, NORMAL),
|
|
PINMUX(SLXD, SPDIF, NORMAL, NORMAL),
|
|
};
|
|
|
|
|
|
int funcmux_select(enum periph_id id, int config)
|
|
{
|
|
int bad_config = config != FUNCMUX_DEFAULT;
|
|
|
|
switch (id) {
|
|
case PERIPH_ID_UART1:
|
|
switch (config) {
|
|
case FUNCMUX_UART1_IRRX_IRTX:
|
|
pinmux_set_func(PMUX_PINGRP_IRRX, PMUX_FUNC_UARTA);
|
|
pinmux_set_func(PMUX_PINGRP_IRTX, PMUX_FUNC_UARTA);
|
|
pinmux_tristate_disable(PMUX_PINGRP_IRRX);
|
|
pinmux_tristate_disable(PMUX_PINGRP_IRTX);
|
|
break;
|
|
case FUNCMUX_UART1_UAA_UAB:
|
|
pinmux_set_func(PMUX_PINGRP_UAA, PMUX_FUNC_UARTA);
|
|
pinmux_set_func(PMUX_PINGRP_UAB, PMUX_FUNC_UARTA);
|
|
pinmux_tristate_disable(PMUX_PINGRP_UAA);
|
|
pinmux_tristate_disable(PMUX_PINGRP_UAB);
|
|
bad_config = 0;
|
|
break;
|
|
case FUNCMUX_UART1_GPU:
|
|
pinmux_set_func(PMUX_PINGRP_GPU, PMUX_FUNC_UARTA);
|
|
pinmux_tristate_disable(PMUX_PINGRP_GPU);
|
|
bad_config = 0;
|
|
break;
|
|
case FUNCMUX_UART1_SDIO1:
|
|
pinmux_set_func(PMUX_PINGRP_SDIO1, PMUX_FUNC_UARTA);
|
|
pinmux_tristate_disable(PMUX_PINGRP_SDIO1);
|
|
bad_config = 0;
|
|
break;
|
|
}
|
|
if (!bad_config) {
|
|
/*
|
|
* Tegra appears to boot with function UARTA pre-
|
|
* selected on mux group SDB. If two mux groups are
|
|
* both set to the same function, it's unclear which
|
|
* group's pins drive the RX signals into the HW.
|
|
* For UARTA, SDB certainly overrides group IRTX in
|
|
* practice. To solve this, configure some alternative
|
|
* function on SDB to avoid the conflict. Also, tri-
|
|
* state the group to avoid driving any signal onto it
|
|
* until we know what's connected.
|
|
*/
|
|
pinmux_tristate_enable(PMUX_PINGRP_SDB);
|
|
pinmux_set_func(PMUX_PINGRP_SDB, PMUX_FUNC_SDIO3);
|
|
}
|
|
break;
|
|
|
|
case PERIPH_ID_UART2:
|
|
if (config == FUNCMUX_UART2_UAD) {
|
|
pinmux_set_func(PMUX_PINGRP_UAD, PMUX_FUNC_UARTB);
|
|
pinmux_tristate_disable(PMUX_PINGRP_UAD);
|
|
}
|
|
break;
|
|
|
|
case PERIPH_ID_UART4:
|
|
if (config == FUNCMUX_UART4_GMC) {
|
|
pinmux_set_func(PMUX_PINGRP_GMC, PMUX_FUNC_UARTD);
|
|
pinmux_tristate_disable(PMUX_PINGRP_GMC);
|
|
}
|
|
break;
|
|
|
|
case PERIPH_ID_DVC_I2C:
|
|
/* there is only one selection, pinmux_config is ignored */
|
|
if (config == FUNCMUX_DVC_I2CP) {
|
|
pinmux_set_func(PMUX_PINGRP_I2CP, PMUX_FUNC_I2C);
|
|
pinmux_tristate_disable(PMUX_PINGRP_I2CP);
|
|
}
|
|
break;
|
|
|
|
case PERIPH_ID_I2C1:
|
|
/* support pinmux_config of 0 for now, */
|
|
if (config == FUNCMUX_I2C1_RM) {
|
|
pinmux_set_func(PMUX_PINGRP_RM, PMUX_FUNC_I2C);
|
|
pinmux_tristate_disable(PMUX_PINGRP_RM);
|
|
}
|
|
break;
|
|
case PERIPH_ID_I2C2: /* I2C2 */
|
|
switch (config) {
|
|
case FUNCMUX_I2C2_DDC: /* DDC pin group, select I2C2 */
|
|
pinmux_set_func(PMUX_PINGRP_DDC, PMUX_FUNC_I2C2);
|
|
/* PTA to HDMI */
|
|
pinmux_set_func(PMUX_PINGRP_PTA, PMUX_FUNC_HDMI);
|
|
pinmux_tristate_disable(PMUX_PINGRP_DDC);
|
|
break;
|
|
case FUNCMUX_I2C2_PTA: /* PTA pin group, select I2C2 */
|
|
pinmux_set_func(PMUX_PINGRP_PTA, PMUX_FUNC_I2C2);
|
|
/* set DDC_SEL to RSVDx (RSVD2 works for now) */
|
|
pinmux_set_func(PMUX_PINGRP_DDC, PMUX_FUNC_RSVD2);
|
|
pinmux_tristate_disable(PMUX_PINGRP_PTA);
|
|
bad_config = 0;
|
|
break;
|
|
}
|
|
break;
|
|
case PERIPH_ID_I2C3: /* I2C3 */
|
|
/* support pinmux_config of 0 for now */
|
|
if (config == FUNCMUX_I2C3_DTF) {
|
|
pinmux_set_func(PMUX_PINGRP_DTF, PMUX_FUNC_I2C3);
|
|
pinmux_tristate_disable(PMUX_PINGRP_DTF);
|
|
}
|
|
break;
|
|
|
|
case PERIPH_ID_SDMMC1:
|
|
if (config == FUNCMUX_SDMMC1_SDIO1_4BIT) {
|
|
pinmux_set_func(PMUX_PINGRP_SDIO1, PMUX_FUNC_SDIO1);
|
|
pinmux_tristate_disable(PMUX_PINGRP_SDIO1);
|
|
}
|
|
break;
|
|
|
|
case PERIPH_ID_SDMMC2:
|
|
if (config == FUNCMUX_SDMMC2_DTA_DTD_8BIT) {
|
|
pinmux_set_func(PMUX_PINGRP_DTA, PMUX_FUNC_SDIO2);
|
|
pinmux_set_func(PMUX_PINGRP_DTD, PMUX_FUNC_SDIO2);
|
|
|
|
pinmux_tristate_disable(PMUX_PINGRP_DTA);
|
|
pinmux_tristate_disable(PMUX_PINGRP_DTD);
|
|
}
|
|
break;
|
|
|
|
case PERIPH_ID_SDMMC3:
|
|
switch (config) {
|
|
case FUNCMUX_SDMMC3_SDB_SLXA_8BIT:
|
|
pinmux_set_func(PMUX_PINGRP_SLXA, PMUX_FUNC_SDIO3);
|
|
pinmux_set_func(PMUX_PINGRP_SLXC, PMUX_FUNC_SDIO3);
|
|
pinmux_set_func(PMUX_PINGRP_SLXD, PMUX_FUNC_SDIO3);
|
|
pinmux_set_func(PMUX_PINGRP_SLXK, PMUX_FUNC_SDIO3);
|
|
|
|
pinmux_tristate_disable(PMUX_PINGRP_SLXA);
|
|
pinmux_tristate_disable(PMUX_PINGRP_SLXC);
|
|
pinmux_tristate_disable(PMUX_PINGRP_SLXD);
|
|
pinmux_tristate_disable(PMUX_PINGRP_SLXK);
|
|
/* fall through */
|
|
|
|
case FUNCMUX_SDMMC3_SDB_4BIT:
|
|
pinmux_set_func(PMUX_PINGRP_SDB, PMUX_FUNC_SDIO3);
|
|
pinmux_set_func(PMUX_PINGRP_SDC, PMUX_FUNC_SDIO3);
|
|
pinmux_set_func(PMUX_PINGRP_SDD, PMUX_FUNC_SDIO3);
|
|
|
|
pinmux_tristate_disable(PMUX_PINGRP_SDB);
|
|
pinmux_tristate_disable(PMUX_PINGRP_SDC);
|
|
pinmux_tristate_disable(PMUX_PINGRP_SDD);
|
|
bad_config = 0;
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case PERIPH_ID_SDMMC4:
|
|
switch (config) {
|
|
case FUNCMUX_SDMMC4_ATC_ATD_8BIT:
|
|
pinmux_set_func(PMUX_PINGRP_ATC, PMUX_FUNC_SDIO4);
|
|
pinmux_set_func(PMUX_PINGRP_ATD, PMUX_FUNC_SDIO4);
|
|
|
|
pinmux_tristate_disable(PMUX_PINGRP_ATC);
|
|
pinmux_tristate_disable(PMUX_PINGRP_ATD);
|
|
break;
|
|
|
|
case FUNCMUX_SDMMC4_ATB_GMA_GME_8_BIT:
|
|
pinmux_set_func(PMUX_PINGRP_GME, PMUX_FUNC_SDIO4);
|
|
pinmux_tristate_disable(PMUX_PINGRP_GME);
|
|
/* fall through */
|
|
|
|
case FUNCMUX_SDMMC4_ATB_GMA_4_BIT:
|
|
pinmux_set_func(PMUX_PINGRP_ATB, PMUX_FUNC_SDIO4);
|
|
pinmux_set_func(PMUX_PINGRP_GMA, PMUX_FUNC_SDIO4);
|
|
|
|
pinmux_tristate_disable(PMUX_PINGRP_ATB);
|
|
pinmux_tristate_disable(PMUX_PINGRP_GMA);
|
|
bad_config = 0;
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case PERIPH_ID_KBC:
|
|
if (config == FUNCMUX_DEFAULT) {
|
|
enum pmux_pingrp grp[] = {PMUX_PINGRP_KBCA,
|
|
PMUX_PINGRP_KBCB, PMUX_PINGRP_KBCC,
|
|
PMUX_PINGRP_KBCD, PMUX_PINGRP_KBCE,
|
|
PMUX_PINGRP_KBCF};
|
|
int i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(grp); i++) {
|
|
pinmux_tristate_disable(grp[i]);
|
|
pinmux_set_func(grp[i], PMUX_FUNC_KBC);
|
|
pinmux_set_pullupdown(grp[i], PMUX_PULL_UP);
|
|
}
|
|
}
|
|
break;
|
|
|
|
case PERIPH_ID_USB2:
|
|
if (config == FUNCMUX_USB2_ULPI) {
|
|
pinmux_set_func(PMUX_PINGRP_UAA, PMUX_FUNC_ULPI);
|
|
pinmux_set_func(PMUX_PINGRP_UAB, PMUX_FUNC_ULPI);
|
|
pinmux_set_func(PMUX_PINGRP_UDA, PMUX_FUNC_ULPI);
|
|
|
|
pinmux_tristate_disable(PMUX_PINGRP_UAA);
|
|
pinmux_tristate_disable(PMUX_PINGRP_UAB);
|
|
pinmux_tristate_disable(PMUX_PINGRP_UDA);
|
|
}
|
|
break;
|
|
|
|
case PERIPH_ID_SPI1:
|
|
if (config == FUNCMUX_SPI1_GMC_GMD) {
|
|
pinmux_set_func(PMUX_PINGRP_GMC, PMUX_FUNC_SFLASH);
|
|
pinmux_set_func(PMUX_PINGRP_GMD, PMUX_FUNC_SFLASH);
|
|
|
|
pinmux_tristate_disable(PMUX_PINGRP_GMC);
|
|
pinmux_tristate_disable(PMUX_PINGRP_GMD);
|
|
}
|
|
break;
|
|
|
|
case PERIPH_ID_NDFLASH:
|
|
switch (config) {
|
|
case FUNCMUX_NDFLASH_ATC:
|
|
pinmux_set_func(PMUX_PINGRP_ATC, PMUX_FUNC_NAND);
|
|
pinmux_tristate_disable(PMUX_PINGRP_ATC);
|
|
break;
|
|
case FUNCMUX_NDFLASH_KBC_8_BIT:
|
|
pinmux_set_func(PMUX_PINGRP_KBCA, PMUX_FUNC_NAND);
|
|
pinmux_set_func(PMUX_PINGRP_KBCB, PMUX_FUNC_NAND);
|
|
pinmux_set_func(PMUX_PINGRP_KBCC, PMUX_FUNC_NAND);
|
|
pinmux_set_func(PMUX_PINGRP_KBCD, PMUX_FUNC_NAND);
|
|
pinmux_set_func(PMUX_PINGRP_KBCE, PMUX_FUNC_NAND);
|
|
pinmux_set_func(PMUX_PINGRP_KBCF, PMUX_FUNC_NAND);
|
|
|
|
pinmux_tristate_disable(PMUX_PINGRP_KBCA);
|
|
pinmux_tristate_disable(PMUX_PINGRP_KBCB);
|
|
pinmux_tristate_disable(PMUX_PINGRP_KBCC);
|
|
pinmux_tristate_disable(PMUX_PINGRP_KBCD);
|
|
pinmux_tristate_disable(PMUX_PINGRP_KBCE);
|
|
pinmux_tristate_disable(PMUX_PINGRP_KBCF);
|
|
|
|
bad_config = 0;
|
|
break;
|
|
}
|
|
break;
|
|
case PERIPH_ID_DISP1:
|
|
if (config == FUNCMUX_DEFAULT) {
|
|
int i;
|
|
|
|
for (i = PMUX_PINGRP_LD0; i <= PMUX_PINGRP_LD17; i++) {
|
|
pinmux_set_func(i, PMUX_FUNC_DISPA);
|
|
pinmux_tristate_disable(i);
|
|
pinmux_set_pullupdown(i, PMUX_PULL_NORMAL);
|
|
}
|
|
pinmux_config_pingrp_table(disp1_default,
|
|
ARRAY_SIZE(disp1_default));
|
|
}
|
|
break;
|
|
|
|
default:
|
|
debug("%s: invalid periph_id %d", __func__, id);
|
|
return -1;
|
|
}
|
|
|
|
if (bad_config) {
|
|
debug("%s: invalid config %d for periph_id %d", __func__,
|
|
config, id);
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|