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/*
* mux.c
*
* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation version 2.
*
* This program is distributed "as is" WITHOUT ANY WARRANTY of any
* kind, whether express or implied; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <common.h>
#include <asm/arch/sys_proto.h>
#include <asm/arch/hardware.h>
#include <asm/arch/mux.h>
#include <asm/io.h>
#include <i2c.h>
#include "board.h"
static struct module_pin_mux uart0_pin_mux[] = {
{OFFSET(uart0_rxd), (MODE(0) | PULLUP_EN | RXACTIVE)}, /* UART0_RXD */
{OFFSET(uart0_txd), (MODE(0) | PULLUDEN)}, /* UART0_TXD */
{-1},
};
static struct module_pin_mux mmc0_pin_mux[] = {
{OFFSET(mmc0_dat3), (MODE(0) | RXACTIVE | PULLUP_EN)}, /* MMC0_DAT3 */
{OFFSET(mmc0_dat2), (MODE(0) | RXACTIVE | PULLUP_EN)}, /* MMC0_DAT2 */
{OFFSET(mmc0_dat1), (MODE(0) | RXACTIVE | PULLUP_EN)}, /* MMC0_DAT1 */
{OFFSET(mmc0_dat0), (MODE(0) | RXACTIVE | PULLUP_EN)}, /* MMC0_DAT0 */
{OFFSET(mmc0_clk), (MODE(0) | RXACTIVE | PULLUP_EN)}, /* MMC0_CLK */
{OFFSET(mmc0_cmd), (MODE(0) | RXACTIVE | PULLUP_EN)}, /* MMC0_CMD */
{OFFSET(mcasp0_aclkr), (MODE(4) | RXACTIVE)}, /* MMC0_WP */
{OFFSET(spi0_cs1), (MODE(5) | RXACTIVE | PULLUP_EN)}, /* MMC0_CD */
{-1},
};
static struct module_pin_mux mmc0_pin_mux_sk_evm[] = {
{OFFSET(mmc0_dat3), (MODE(0) | RXACTIVE | PULLUP_EN)}, /* MMC0_DAT3 */
{OFFSET(mmc0_dat2), (MODE(0) | RXACTIVE | PULLUP_EN)}, /* MMC0_DAT2 */
{OFFSET(mmc0_dat1), (MODE(0) | RXACTIVE | PULLUP_EN)}, /* MMC0_DAT1 */
{OFFSET(mmc0_dat0), (MODE(0) | RXACTIVE | PULLUP_EN)}, /* MMC0_DAT0 */
{OFFSET(mmc0_clk), (MODE(0) | RXACTIVE | PULLUP_EN)}, /* MMC0_CLK */
{OFFSET(mmc0_cmd), (MODE(0) | RXACTIVE | PULLUP_EN)}, /* MMC0_CMD */
{OFFSET(spi0_cs1), (MODE(5) | RXACTIVE | PULLUP_EN)}, /* MMC0_CD */
{-1},
};
static struct module_pin_mux mmc1_pin_mux[] = {
{OFFSET(gpmc_ad3), (MODE(1) | RXACTIVE | PULLUP_EN)}, /* MMC1_DAT3 */
{OFFSET(gpmc_ad2), (MODE(1) | RXACTIVE | PULLUP_EN)}, /* MMC1_DAT2 */
{OFFSET(gpmc_ad1), (MODE(1) | RXACTIVE | PULLUP_EN)}, /* MMC1_DAT1 */
{OFFSET(gpmc_ad0), (MODE(1) | RXACTIVE | PULLUP_EN)}, /* MMC1_DAT0 */
{OFFSET(gpmc_csn1), (MODE(2) | RXACTIVE | PULLUP_EN)}, /* MMC1_CLK */
{OFFSET(gpmc_csn2), (MODE(2) | RXACTIVE | PULLUP_EN)}, /* MMC1_CMD */
{OFFSET(gpmc_csn0), (MODE(7) | RXACTIVE | PULLUP_EN)}, /* MMC1_WP */
{OFFSET(gpmc_advn_ale), (MODE(7) | RXACTIVE | PULLUP_EN)}, /* MMC1_CD */
{-1},
};
static struct module_pin_mux i2c0_pin_mux[] = {
{OFFSET(i2c0_sda), (MODE(0) | RXACTIVE |
PULLUDEN | SLEWCTRL)}, /* I2C_DATA */
{OFFSET(i2c0_scl), (MODE(0) | RXACTIVE |
PULLUDEN | SLEWCTRL)}, /* I2C_SCLK */
{-1},
};
static struct module_pin_mux i2c1_pin_mux[] = {
{OFFSET(spi0_d1), (MODE(2) | RXACTIVE |
PULLUDEN | SLEWCTRL)}, /* I2C_DATA */
{OFFSET(spi0_cs0), (MODE(2) | RXACTIVE |
PULLUDEN | SLEWCTRL)}, /* I2C_SCLK */
{-1},
};
static struct module_pin_mux spi0_pin_mux[] = {
{OFFSET(spi0_sclk), (MODE(0) | RXACTIVE | PULLUDEN)}, /* SPI0_SCLK */
{OFFSET(spi0_d0), (MODE(0) | RXACTIVE |
PULLUDEN | PULLUP_EN)}, /* SPI0_D0 */
{OFFSET(spi0_d1), (MODE(0) | RXACTIVE | PULLUDEN)}, /* SPI0_D1 */
{OFFSET(spi0_cs0), (MODE(0) | RXACTIVE |
PULLUDEN | PULLUP_EN)}, /* SPI0_CS0 */
{-1},
};
static struct module_pin_mux gpio0_7_pin_mux[] = {
{OFFSET(ecap0_in_pwm0_out), (MODE(7) | PULLUDEN)}, /* GPIO0_7 */
{-1},
};
static struct module_pin_mux rgmii1_pin_mux[] = {
{OFFSET(mii1_txen), MODE(2)}, /* RGMII1_TCTL */
{OFFSET(mii1_rxdv), MODE(2) | RXACTIVE}, /* RGMII1_RCTL */
{OFFSET(mii1_txd3), MODE(2)}, /* RGMII1_TD3 */
{OFFSET(mii1_txd2), MODE(2)}, /* RGMII1_TD2 */
{OFFSET(mii1_txd1), MODE(2)}, /* RGMII1_TD1 */
{OFFSET(mii1_txd0), MODE(2)}, /* RGMII1_TD0 */
{OFFSET(mii1_txclk), MODE(2)}, /* RGMII1_TCLK */
{OFFSET(mii1_rxclk), MODE(2) | RXACTIVE}, /* RGMII1_RCLK */
{OFFSET(mii1_rxd3), MODE(2) | RXACTIVE}, /* RGMII1_RD3 */
{OFFSET(mii1_rxd2), MODE(2) | RXACTIVE}, /* RGMII1_RD2 */
{OFFSET(mii1_rxd1), MODE(2) | RXACTIVE}, /* RGMII1_RD1 */
{OFFSET(mii1_rxd0), MODE(2) | RXACTIVE}, /* RGMII1_RD0 */
{OFFSET(mdio_data), MODE(0) | RXACTIVE | PULLUP_EN},/* MDIO_DATA */
{OFFSET(mdio_clk), MODE(0) | PULLUP_EN}, /* MDIO_CLK */
{-1},
};
static struct module_pin_mux mii1_pin_mux[] = {
{OFFSET(mii1_rxerr), MODE(0) | RXACTIVE}, /* MII1_RXERR */
{OFFSET(mii1_txen), MODE(0)}, /* MII1_TXEN */
{OFFSET(mii1_rxdv), MODE(0) | RXACTIVE}, /* MII1_RXDV */
{OFFSET(mii1_txd3), MODE(0)}, /* MII1_TXD3 */
{OFFSET(mii1_txd2), MODE(0)}, /* MII1_TXD2 */
{OFFSET(mii1_txd1), MODE(0)}, /* MII1_TXD1 */
{OFFSET(mii1_txd0), MODE(0)}, /* MII1_TXD0 */
{OFFSET(mii1_txclk), MODE(0) | RXACTIVE}, /* MII1_TXCLK */
{OFFSET(mii1_rxclk), MODE(0) | RXACTIVE}, /* MII1_RXCLK */
{OFFSET(mii1_rxd3), MODE(0) | RXACTIVE}, /* MII1_RXD3 */
{OFFSET(mii1_rxd2), MODE(0) | RXACTIVE}, /* MII1_RXD2 */
{OFFSET(mii1_rxd1), MODE(0) | RXACTIVE}, /* MII1_RXD1 */
{OFFSET(mii1_rxd0), MODE(0) | RXACTIVE}, /* MII1_RXD0 */
{OFFSET(mdio_data), MODE(0) | RXACTIVE | PULLUP_EN}, /* MDIO_DATA */
{OFFSET(mdio_clk), MODE(0) | PULLUP_EN}, /* MDIO_CLK */
{-1},
};
void enable_uart0_pin_mux(void)
{
configure_module_pin_mux(uart0_pin_mux);
}
void enable_i2c0_pin_mux(void)
{
configure_module_pin_mux(i2c0_pin_mux);
}
/*
* The AM335x GP EVM, if daughter card(s) are connected, can have 8
* different profiles. These profiles determine what peripherals are
* valid and need pinmux to be configured.
*/
#define PROFILE_NONE 0x0
#define PROFILE_0 (1 << 0)
#define PROFILE_1 (1 << 1)
#define PROFILE_2 (1 << 2)
#define PROFILE_3 (1 << 3)
#define PROFILE_4 (1 << 4)
#define PROFILE_5 (1 << 5)
#define PROFILE_6 (1 << 6)
#define PROFILE_7 (1 << 7)
#define PROFILE_MASK 0x7
#define PROFILE_ALL 0xFF
/* CPLD registers */
#define I2C_CPLD_ADDR 0x35
#define CFG_REG 0x10
static unsigned short detect_daughter_board_profile(void)
{
unsigned short val;
if (i2c_probe(I2C_CPLD_ADDR))
return PROFILE_NONE;
if (i2c_read(I2C_CPLD_ADDR, CFG_REG, 1, (unsigned char *)(&val), 2))
return PROFILE_NONE;
return (1 << (val & PROFILE_MASK));
}
void enable_board_pin_mux(struct am335x_baseboard_id *header)
{
/* Do board-specific muxes. */
if (!strncmp(header->name, "A335BONE", HDR_NAME_LEN)) {
/* Beaglebone pinmux */
configure_module_pin_mux(i2c1_pin_mux);
configure_module_pin_mux(mii1_pin_mux);
configure_module_pin_mux(mmc0_pin_mux);
configure_module_pin_mux(mmc1_pin_mux);
} else if (!strncmp(header->config, "SKU#01", 6)) {
/* General Purpose EVM */
unsigned short profile = detect_daughter_board_profile();
configure_module_pin_mux(rgmii1_pin_mux);
configure_module_pin_mux(mmc0_pin_mux);
/* In profile #2 i2c1 and spi0 conflict. */
if (profile & ~PROFILE_2)
configure_module_pin_mux(i2c1_pin_mux);
else if (profile == PROFILE_2) {
configure_module_pin_mux(mmc1_pin_mux);
configure_module_pin_mux(spi0_pin_mux);
}
} else if (!strncmp(header->name, "A335X_SK", HDR_NAME_LEN)) {
/* Starter Kit EVM */
configure_module_pin_mux(i2c1_pin_mux);
configure_module_pin_mux(gpio0_7_pin_mux);
configure_module_pin_mux(rgmii1_pin_mux);
configure_module_pin_mux(mmc0_pin_mux_sk_evm);
} else {
puts("Unknown board, cannot configure pinmux.");
hang();
}
}
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