diff options
Diffstat (limited to 'board/compulab/cm_t54/cm_t54.c')
| -rw-r--r-- | board/compulab/cm_t54/cm_t54.c | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/board/compulab/cm_t54/cm_t54.c b/board/compulab/cm_t54/cm_t54.c new file mode 100644 index 0000000000..e0df47e72b --- /dev/null +++ b/board/compulab/cm_t54/cm_t54.c @@ -0,0 +1,177 @@ +/* + * 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 <usb.h> +#include <mmc.h> +#include <palmas.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> + +#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); /* boot param addr */ + + 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; +} + +#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_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 + |