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/*
* Board functions for Compulab CM-T54 board
*
* Copyright (C) 2014, Compulab Ltd - http://compulab.co.il/
*
* Author: Dmitry Lifshitz <lifshitz@compulab.co.il>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <fdt_support.h>
#include <usb.h>
#include <mmc.h>
#include <palmas.h>
#include <spl.h>
#include <asm/gpio.h>
#include <asm/arch/sys_proto.h>
#include <asm/arch/mmc_host_def.h>
#include <asm/arch/clock.h>
#include <asm/arch/ehci.h>
#include <asm/ehci-omap.h>
#include "../common/eeprom.h"
#define DIE_ID_REG_BASE (OMAP54XX_L4_CORE_BASE + 0x2000)
#define DIE_ID_REG_OFFSET 0x200
DECLARE_GLOBAL_DATA_PTR;
#if !defined(CONFIG_SPL_BUILD)
inline void set_muxconf_regs_essential(void){};
#endif
const struct omap_sysinfo sysinfo = {
"Board: CM-T54\n"
};
/*
* Routine: board_init
* Description: hardware init.
*/
int board_init(void)
{
gd->bd->bi_boot_params = (CONFIG_SYS_SDRAM_BASE + 0x100);
return 0;
}
/*
* Routine: cm_t54_palmas_regulator_set
* Description: select voltage and turn on/off Palmas PMIC regulator.
*/
static int cm_t54_palmas_regulator_set(u8 vreg, u8 vval, u8 creg, u8 cval)
{
int err;
/* Setup voltage */
err = palmas_i2c_write_u8(TWL603X_CHIP_P1, vreg, vval);
if (err) {
printf("cm_t54: could not set regulator 0x%02x voltage : %d\n",
vreg, err);
return err;
}
/* Turn on/off regulator */
err = palmas_i2c_write_u8(TWL603X_CHIP_P1, creg, cval);
if (err) {
printf("cm_t54: could not turn on/off regulator 0x%02x : %d\n",
creg, err);
return err;
}
return 0;
}
/*
* Routine: mmc_get_env_part
* Description: setup environment storage device partition.
*/
#ifdef CONFIG_SYS_MMC_ENV_PART
uint mmc_get_env_part(struct mmc *mmc)
{
u32 bootmode = gd->arch.omap_boot_params.omap_bootmode;
uint bootpart = CONFIG_SYS_MMC_ENV_PART;
/*
* If booted from eMMC boot partition then force eMMC
* FIRST boot partition to be env storage
*/
if (bootmode == BOOT_DEVICE_MMC2_2)
bootpart = 1;
return bootpart;
}
#endif
#if defined(CONFIG_GENERIC_MMC) && !defined(CONFIG_SPL_BUILD)
#define SB_T54_CD_GPIO 228
#define SB_T54_WP_GPIO 229
int board_mmc_getcd(struct mmc *mmc)
{
return !gpio_get_value(SB_T54_CD_GPIO);
}
int board_mmc_init(bd_t *bis)
{
int ret0, ret1;
ret0 = omap_mmc_init(0, 0, 0, -1, SB_T54_WP_GPIO);
if (ret0)
printf("cm_t54: failed to initialize mmc0\n");
ret1 = omap_mmc_init(1, 0, 0, -1, -1);
if (ret1)
printf("cm_t54: failed to initialize mmc1\n");
if (ret0 && ret1)
return -1;
return 0;
}
#endif
#ifdef CONFIG_USB_HOST_ETHER
void ft_board_setup(void *blob, bd_t *bd)
{
uint8_t enetaddr[6];
/* MAC addr */
if (eth_getenv_enetaddr("usbethaddr", enetaddr)) {
fdt_find_and_setprop(blob, "/smsc95xx@0", "mac-address",
enetaddr, 6, 1);
}
}
static void generate_mac_addr(uint8_t *enetaddr)
{
int reg;
reg = DIE_ID_REG_BASE + DIE_ID_REG_OFFSET;
/*
* create a fake MAC address from the processor ID code.
* first byte is 0x02 to signify locally administered.
*/
enetaddr[0] = 0x02;
enetaddr[1] = readl(reg + 0x10) & 0xff;
enetaddr[2] = readl(reg + 0xC) & 0xff;
enetaddr[3] = readl(reg + 0x8) & 0xff;
enetaddr[4] = readl(reg) & 0xff;
enetaddr[5] = (readl(reg) >> 8) & 0xff;
}
/*
* Routine: handle_mac_address
* Description: prepare MAC address for on-board Ethernet.
*/
static int handle_mac_address(void)
{
uint8_t enetaddr[6];
int ret;
ret = eth_getenv_enetaddr("usbethaddr", enetaddr);
if (ret)
return 0;
ret = cl_eeprom_read_mac_addr(enetaddr);
if (ret || !is_valid_ether_addr(enetaddr))
generate_mac_addr(enetaddr);
if (!is_valid_ether_addr(enetaddr))
return -1;
return eth_setenv_enetaddr("usbethaddr", enetaddr);
}
int board_eth_init(bd_t *bis)
{
return handle_mac_address();
}
#endif
#ifdef CONFIG_USB_EHCI
static struct omap_usbhs_board_data usbhs_bdata = {
.port_mode[0] = OMAP_USBHS_PORT_MODE_UNUSED,
.port_mode[1] = OMAP_EHCI_PORT_MODE_HSIC,
.port_mode[2] = OMAP_EHCI_PORT_MODE_HSIC,
};
static void setup_host_clocks(bool enable)
{
int usbhost_clk = OPTFCLKEN_HSIC60M_P3_CLK |
OPTFCLKEN_HSIC480M_P3_CLK |
OPTFCLKEN_HSIC60M_P2_CLK |
OPTFCLKEN_HSIC480M_P2_CLK |
OPTFCLKEN_UTMI_P3_CLK |
OPTFCLKEN_UTMI_P2_CLK;
int usbtll_clk = OPTFCLKEN_USB_CH1_CLK_ENABLE |
OPTFCLKEN_USB_CH2_CLK_ENABLE;
int usbhub_clk = CKOBUFFER_CLK_ENABLE_MASK;
if (enable) {
/* Enable port 2 and 3 clocks*/
setbits_le32((*prcm)->cm_l3init_hsusbhost_clkctrl, usbhost_clk);
/* Enable port 2 and 3 usb host ports tll clocks*/
setbits_le32((*prcm)->cm_l3init_hsusbtll_clkctrl, usbtll_clk);
/* Request FREF_XTAL_CLK clock for HSIC USB Hub */
setbits_le32((*ctrl)->control_ckobuffer, usbhub_clk);
} else {
clrbits_le32((*ctrl)->control_ckobuffer, usbhub_clk);
clrbits_le32((*prcm)->cm_l3init_hsusbtll_clkctrl, usbtll_clk);
clrbits_le32((*prcm)->cm_l3init_hsusbhost_clkctrl, usbhost_clk);
}
}
int ehci_hcd_init(int index, enum usb_init_type init,
struct ehci_hccr **hccr, struct ehci_hcor **hcor)
{
int ret;
/* VCC_3V3_ETH */
cm_t54_palmas_regulator_set(SMPS9_VOLTAGE, SMPS_VOLT_3V3, SMPS9_CTRL,
SMPS_MODE_SLP_AUTO | SMPS_MODE_ACT_AUTO);
setup_host_clocks(true);
ret = omap_ehci_hcd_init(index, &usbhs_bdata, hccr, hcor);
if (ret < 0)
printf("cm_t54: Failed to initialize ehci : %d\n", ret);
return ret;
}
int ehci_hcd_stop(void)
{
int ret = omap_ehci_hcd_stop();
setup_host_clocks(false);
cm_t54_palmas_regulator_set(SMPS9_VOLTAGE, SMPS_VOLT_OFF,
SMPS9_CTRL, SMPS_MODE_SLP_AUTO);
return ret;
}
void usb_hub_reset_devices(int port)
{
/* The LAN9730 needs to be reset after the port power has been set. */
if (port == 3) {
gpio_direction_output(CONFIG_OMAP_EHCI_PHY3_RESET_GPIO, 0);
udelay(10);
gpio_direction_output(CONFIG_OMAP_EHCI_PHY3_RESET_GPIO, 1);
}
}
#endif
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