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u-boot/board/tqc/tqma6/tqma6_mba6.c
Tom Rini 83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style 
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-07 09:34:12 -04:00

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9.6 KiB
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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2012 Freescale Semiconductor, Inc.
* Author: Fabio Estevam <fabio.estevam@freescale.com>
*
* Copyright (C) 2013, 2014 TQ Systems (ported SabreSD to TQMa6x)
* Author: Markus Niebel <markus.niebel@tq-group.com>
*/
#include <asm/io.h>
#include <asm/arch/clock.h>
#include <asm/arch/mx6-pins.h>
#include <asm/arch/imx-regs.h>
#include <asm/arch/iomux.h>
#include <asm/arch/sys_proto.h>
#include <linux/errno.h>
#include <asm/gpio.h>
#include <asm/mach-imx/mxc_i2c.h>
#include <common.h>
#include <fsl_esdhc.h>
#include <linux/libfdt.h>
#include <malloc.h>
#include <i2c.h>
#include <micrel.h>
#include <miiphy.h>
#include <mmc.h>
#include <netdev.h>
#include "tqma6_bb.h"
#define UART_PAD_CTRL (PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED | \
PAD_CTL_DSE_80ohm | PAD_CTL_SRE_FAST | PAD_CTL_HYS)
#define USDHC_CLK_PAD_CTRL (PAD_CTL_PUS_47K_UP | PAD_CTL_SPEED_LOW | \
PAD_CTL_DSE_40ohm | PAD_CTL_SRE_FAST | PAD_CTL_HYS)
#define USDHC_PAD_CTRL (PAD_CTL_PUS_47K_UP | PAD_CTL_SPEED_LOW | \
PAD_CTL_DSE_80ohm | PAD_CTL_SRE_FAST | PAD_CTL_HYS)
#define GPIO_OUT_PAD_CTRL (PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_LOW | \
PAD_CTL_DSE_40ohm | PAD_CTL_HYS)
#define GPIO_IN_PAD_CTRL (PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_LOW | \
PAD_CTL_DSE_40ohm | PAD_CTL_HYS)
#define SPI_PAD_CTRL (PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED | \
PAD_CTL_DSE_80ohm | PAD_CTL_SRE_FAST | PAD_CTL_HYS)
#define I2C_PAD_CTRL (PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED | \
PAD_CTL_DSE_80ohm | PAD_CTL_HYS | \
PAD_CTL_ODE | PAD_CTL_SRE_FAST)
#if defined(CONFIG_TQMA6Q)
#define IOMUX_SW_PAD_CTRL_GRP_DDR_TYPE_RGMII 0x02e0790
#define IOMUX_SW_PAD_CTRL_GRP_RGMII_TERM 0x02e07ac
#elif defined(CONFIG_TQMA6S) || defined(CONFIG_TQMA6DL)
#define IOMUX_SW_PAD_CTRL_GRP_DDR_TYPE_RGMII 0x02e0768
#define IOMUX_SW_PAD_CTRL_GRP_RGMII_TERM 0x02e0788
#else
#error "need to select module"
#endif
#define ENET_RX_PAD_CTRL (PAD_CTL_DSE_34ohm)
#define ENET_TX_PAD_CTRL (PAD_CTL_PUS_100K_UP | PAD_CTL_DSE_34ohm)
#define ENET_CLK_PAD_CTRL (PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_HIGH | \
PAD_CTL_DSE_34ohm)
#define ENET_MDIO_PAD_CTRL (PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED | \
PAD_CTL_DSE_60ohm)
/* disable on die termination for RGMII */
#define IOMUX_SW_PAD_CTRL_GRP_RGMII_TERM_DISABLE 0x00000000
/* optimised drive strength for 1.0 .. 1.3 V signal on RGMII */
#define IOMUX_SW_PAD_CTRL_GRP_DDR_TYPE_RGMII_1P2V 0x00080000
/* optimised drive strength for 1.3 .. 2.5 V signal on RGMII */
#define IOMUX_SW_PAD_CTRL_GRP_DDR_TYPE_RGMII_1P5V 0x000C0000
#define ENET_PHY_RESET_GPIO IMX_GPIO_NR(1, 25)
static iomux_v3_cfg_t const mba6_enet_pads[] = {
NEW_PAD_CTRL(MX6_PAD_ENET_MDIO__ENET_MDIO, ENET_MDIO_PAD_CTRL),
NEW_PAD_CTRL(MX6_PAD_ENET_MDC__ENET_MDC, ENET_MDIO_PAD_CTRL),
NEW_PAD_CTRL(MX6_PAD_RGMII_TXC__RGMII_TXC, ENET_TX_PAD_CTRL),
NEW_PAD_CTRL(MX6_PAD_RGMII_TD0__RGMII_TD0, ENET_TX_PAD_CTRL),
NEW_PAD_CTRL(MX6_PAD_RGMII_TD1__RGMII_TD1, ENET_TX_PAD_CTRL),
NEW_PAD_CTRL(MX6_PAD_RGMII_TD2__RGMII_TD2, ENET_TX_PAD_CTRL),
NEW_PAD_CTRL(MX6_PAD_RGMII_TD3__RGMII_TD3, ENET_TX_PAD_CTRL),
NEW_PAD_CTRL(MX6_PAD_RGMII_TX_CTL__RGMII_TX_CTL,
ENET_TX_PAD_CTRL),
NEW_PAD_CTRL(MX6_PAD_ENET_REF_CLK__ENET_TX_CLK, ENET_CLK_PAD_CTRL),
/*
* these pins are also used for config strapping by phy
*/
NEW_PAD_CTRL(MX6_PAD_RGMII_RD0__RGMII_RD0, ENET_RX_PAD_CTRL),
NEW_PAD_CTRL(MX6_PAD_RGMII_RD1__RGMII_RD1, ENET_RX_PAD_CTRL),
NEW_PAD_CTRL(MX6_PAD_RGMII_RD2__RGMII_RD2, ENET_RX_PAD_CTRL),
NEW_PAD_CTRL(MX6_PAD_RGMII_RD3__RGMII_RD3, ENET_RX_PAD_CTRL),
NEW_PAD_CTRL(MX6_PAD_RGMII_RXC__RGMII_RXC, ENET_RX_PAD_CTRL),
NEW_PAD_CTRL(MX6_PAD_RGMII_RX_CTL__RGMII_RX_CTL,
ENET_RX_PAD_CTRL),
/* KSZ9031 PHY Reset */
NEW_PAD_CTRL(MX6_PAD_ENET_CRS_DV__GPIO1_IO25, GPIO_OUT_PAD_CTRL),
};
static void mba6_setup_iomuxc_enet(void)
{
struct iomuxc *const iomuxc_regs = (struct iomuxc *)IOMUXC_BASE_ADDR;
/* clear gpr1[ENET_CLK_SEL] for externel clock */
clrbits_le32(&iomuxc_regs->gpr[1], IOMUXC_GPR1_ENET_CLK_SEL_MASK);
__raw_writel(IOMUX_SW_PAD_CTRL_GRP_RGMII_TERM_DISABLE,
(void *)IOMUX_SW_PAD_CTRL_GRP_RGMII_TERM);
__raw_writel(IOMUX_SW_PAD_CTRL_GRP_DDR_TYPE_RGMII_1P5V,
(void *)IOMUX_SW_PAD_CTRL_GRP_DDR_TYPE_RGMII);
imx_iomux_v3_setup_multiple_pads(mba6_enet_pads,
ARRAY_SIZE(mba6_enet_pads));
/* Reset PHY */
gpio_direction_output(ENET_PHY_RESET_GPIO , 0);
/* Need delay 10ms after power on according to KSZ9031 spec */
mdelay(10);
gpio_set_value(ENET_PHY_RESET_GPIO, 1);
/*
* KSZ9031 manual: 100 usec wait time after reset before communication
* over MDIO
* BUGBUG: hardware has an RC const that needs > 10 msec from 0->1 on
* reset before the phy sees a high level
*/
mdelay(15);
}
static iomux_v3_cfg_t const mba6_uart2_pads[] = {
NEW_PAD_CTRL(MX6_PAD_SD4_DAT4__UART2_RX_DATA, UART_PAD_CTRL),
NEW_PAD_CTRL(MX6_PAD_SD4_DAT7__UART2_TX_DATA, UART_PAD_CTRL),
};
static void mba6_setup_iomuxc_uart(void)
{
imx_iomux_v3_setup_multiple_pads(mba6_uart2_pads,
ARRAY_SIZE(mba6_uart2_pads));
}
#define USDHC2_CD_GPIO IMX_GPIO_NR(1, 4)
#define USDHC2_WP_GPIO IMX_GPIO_NR(1, 2)
int tqma6_bb_board_mmc_getcd(struct mmc *mmc)
{
struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
int ret = 0;
if (cfg->esdhc_base == USDHC2_BASE_ADDR)
ret = !gpio_get_value(USDHC2_CD_GPIO);
return ret;
}
int tqma6_bb_board_mmc_getwp(struct mmc *mmc)
{
struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
int ret = 0;
if (cfg->esdhc_base == USDHC2_BASE_ADDR)
ret = gpio_get_value(USDHC2_WP_GPIO);
return ret;
}
static struct fsl_esdhc_cfg mba6_usdhc_cfg = {
.esdhc_base = USDHC2_BASE_ADDR,
.max_bus_width = 4,
};
static iomux_v3_cfg_t const mba6_usdhc2_pads[] = {
NEW_PAD_CTRL(MX6_PAD_SD2_CLK__SD2_CLK, USDHC_CLK_PAD_CTRL),
NEW_PAD_CTRL(MX6_PAD_SD2_CMD__SD2_CMD, USDHC_PAD_CTRL),
NEW_PAD_CTRL(MX6_PAD_SD2_DAT0__SD2_DATA0, USDHC_PAD_CTRL),
NEW_PAD_CTRL(MX6_PAD_SD2_DAT1__SD2_DATA1, USDHC_PAD_CTRL),
NEW_PAD_CTRL(MX6_PAD_SD2_DAT2__SD2_DATA2, USDHC_PAD_CTRL),
NEW_PAD_CTRL(MX6_PAD_SD2_DAT3__SD2_DATA3, USDHC_PAD_CTRL),
/* CD */
NEW_PAD_CTRL(MX6_PAD_GPIO_4__GPIO1_IO04, GPIO_IN_PAD_CTRL),
/* WP */
NEW_PAD_CTRL(MX6_PAD_GPIO_2__GPIO1_IO02, GPIO_IN_PAD_CTRL),
};
int tqma6_bb_board_mmc_init(bd_t *bis)
{
imx_iomux_v3_setup_multiple_pads(mba6_usdhc2_pads,
ARRAY_SIZE(mba6_usdhc2_pads));
gpio_direction_input(USDHC2_CD_GPIO);
gpio_direction_input(USDHC2_WP_GPIO);
mba6_usdhc_cfg.sdhc_clk = mxc_get_clock(MXC_ESDHC2_CLK);
if (fsl_esdhc_initialize(bis, &mba6_usdhc_cfg))
puts("Warning: failed to initialize SD\n");
return 0;
}
static struct i2c_pads_info mba6_i2c1_pads = {
/* I2C1: MBa6x */
.scl = {
.i2c_mode = NEW_PAD_CTRL(MX6_PAD_CSI0_DAT9__I2C1_SCL,
I2C_PAD_CTRL),
.gpio_mode = NEW_PAD_CTRL(MX6_PAD_CSI0_DAT9__GPIO5_IO27,
I2C_PAD_CTRL),
.gp = IMX_GPIO_NR(5, 27)
},
.sda = {
.i2c_mode = NEW_PAD_CTRL(MX6_PAD_CSI0_DAT8__I2C1_SDA,
I2C_PAD_CTRL),
.gpio_mode = NEW_PAD_CTRL(MX6_PAD_CSI0_DAT8__GPIO5_IO26,
I2C_PAD_CTRL),
.gp = IMX_GPIO_NR(5, 26)
}
};
static void mba6_setup_i2c(void)
{
int ret;
/*
* use logical index for bus, e.g. I2C1 -> 0
* warn on error
*/
ret = setup_i2c(0, CONFIG_SYS_I2C_SPEED, 0x7f, &mba6_i2c1_pads);
if (ret)
printf("setup I2C1 failed: %d\n", ret);
}
int board_phy_config(struct phy_device *phydev)
{
/*
* optimized pad skew values depends on CPU variant on the TQMa6x module:
* CONFIG_TQMA6Q: i.MX6Q/D
* CONFIG_TQMA6S: i.MX6S
* CONFIG_TQMA6DL: i.MX6DL
*/
#if defined(CONFIG_TQMA6Q)
#define MBA6X_KSZ9031_CTRL_SKEW 0x0032
#define MBA6X_KSZ9031_CLK_SKEW 0x03ff
#define MBA6X_KSZ9031_RX_SKEW 0x3333
#define MBA6X_KSZ9031_TX_SKEW 0x2036
#elif defined(CONFIG_TQMA6S) || defined(CONFIG_TQMA6DL)
#define MBA6X_KSZ9031_CTRL_SKEW 0x0030
#define MBA6X_KSZ9031_CLK_SKEW 0x03ff
#define MBA6X_KSZ9031_RX_SKEW 0x3333
#define MBA6X_KSZ9031_TX_SKEW 0x2052
#else
#error
#endif
/* min rx/tx ctrl delay */
ksz9031_phy_extended_write(phydev, 2,
MII_KSZ9031_EXT_RGMII_CTRL_SIG_SKEW,
MII_KSZ9031_MOD_DATA_NO_POST_INC,
MBA6X_KSZ9031_CTRL_SKEW);
/* min rx delay */
ksz9031_phy_extended_write(phydev, 2,
MII_KSZ9031_EXT_RGMII_RX_DATA_SKEW,
MII_KSZ9031_MOD_DATA_NO_POST_INC,
MBA6X_KSZ9031_RX_SKEW);
/* max tx delay */
ksz9031_phy_extended_write(phydev, 2,
MII_KSZ9031_EXT_RGMII_TX_DATA_SKEW,
MII_KSZ9031_MOD_DATA_NO_POST_INC,
MBA6X_KSZ9031_TX_SKEW);
/* rx/tx clk skew */
ksz9031_phy_extended_write(phydev, 2,
MII_KSZ9031_EXT_RGMII_CLOCK_SKEW,
MII_KSZ9031_MOD_DATA_NO_POST_INC,
MBA6X_KSZ9031_CLK_SKEW);
phydev->drv->config(phydev);
return 0;
}
int board_eth_init(bd_t *bis)
{
uint32_t base = IMX_FEC_BASE;
struct mii_dev *bus = NULL;
struct phy_device *phydev = NULL;
int ret;
bus = fec_get_miibus(base, -1);
if (!bus)
return -EINVAL;
/* scan phy */
phydev = phy_find_by_mask(bus, (0xf << CONFIG_FEC_MXC_PHYADDR),
PHY_INTERFACE_MODE_RGMII);
if (!phydev) {
ret = -EINVAL;
goto free_bus;
}
ret = fec_probe(bis, -1, base, bus, phydev);
if (ret)
goto free_phydev;
return 0;
free_phydev:
free(phydev);
free_bus:
free(bus);
return ret;
}
int tqma6_bb_board_early_init_f(void)
{
mba6_setup_iomuxc_uart();
return 0;
}
int tqma6_bb_board_init(void)
{
mba6_setup_i2c();
/* do it here - to have reset completed */
mba6_setup_iomuxc_enet();
return 0;
}
int tqma6_bb_board_late_init(void)
{
return 0;
}
const char *tqma6_bb_get_boardname(void)
{
return "MBa6x";
}
/*
* Device Tree Support
*/
#if defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_OF_LIBFDT)
void tqma6_bb_ft_board_setup(void *blob, bd_t *bd)
{
/* TBD */
}
#endif /* defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_OF_LIBFDT) */
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