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imx: tx25: Convert to iomux-v3

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There is no change of behavior, even if some pad control values could probably
be simplified.

Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
This commit is contained in:
Benoît Thébaudeau 2013-05-03 10:32:16 +00:00 committed by Stefano Babic
parent 1b1c526751
commit 97549cb546
1 changed files with 68 additions and 39 deletions
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107
board/karo/tx25/tx25.c
View file

@ -27,9 +27,8 @@
#include <common.h>
#include <asm/io.h>
#include <asm/arch/imx-regs.h>
#include <asm/arch/imx25-pinmux.h>
#include <asm/arch/iomux-mx25.h>
#include <asm/gpio.h>
#include <asm/arch/sys_proto.h>
DECLARE_GLOBAL_DATA_PTR;
@ -42,36 +41,44 @@ void board_init_f(ulong bootflag)
#endif
#ifdef CONFIG_FEC_MXC
/*
* FIXME: need to revisit this
* The original code enabled PUE and 100-k pull-down without PKE, so the right
* value here is likely:
* 0 for no pull
* or:
* PAD_CTL_PUS_100K_DOWN for 100-k pull-down
*/
#define FEC_OUT_PAD_CTRL 0
#define GPIO_FEC_RESET_B IMX_GPIO_NR(4, 7)
#define GPIO_FEC_ENABLE_B IMX_GPIO_NR(4, 9)
void tx25_fec_init(void)
{
struct iomuxc_mux_ctl *muxctl;
struct iomuxc_pad_ctl *padctl;
u32 gpio_mux_mode = MX25_PIN_MUX_MODE(5);
u32 saved_rdata0_mode, saved_rdata1_mode, saved_rx_dv_mode;
static const iomux_v3_cfg_t fec_pads[] = {
MX25_PAD_FEC_TX_CLK__FEC_TX_CLK,
MX25_PAD_FEC_RX_DV__FEC_RX_DV,
MX25_PAD_FEC_RDATA0__FEC_RDATA0,
NEW_PAD_CTRL(MX25_PAD_FEC_TDATA0__FEC_TDATA0, FEC_OUT_PAD_CTRL),
NEW_PAD_CTRL(MX25_PAD_FEC_TX_EN__FEC_TX_EN, FEC_OUT_PAD_CTRL),
NEW_PAD_CTRL(MX25_PAD_FEC_MDC__FEC_MDC, FEC_OUT_PAD_CTRL),
MX25_PAD_FEC_MDIO__FEC_MDIO,
MX25_PAD_FEC_RDATA1__FEC_RDATA1,
NEW_PAD_CTRL(MX25_PAD_FEC_TDATA1__FEC_TDATA1, FEC_OUT_PAD_CTRL),
NEW_PAD_CTRL(MX25_PAD_D13__GPIO_4_7, 0), /* FEC_RESET_B */
NEW_PAD_CTRL(MX25_PAD_D11__GPIO_4_9, 0), /* FEC_ENABLE_B */
};
static const iomux_v3_cfg_t fec_cfg_pads[] = {
MX25_PAD_FEC_RDATA0__GPIO_3_10,
MX25_PAD_FEC_RDATA1__GPIO_3_11,
MX25_PAD_FEC_RX_DV__GPIO_3_12,
};
debug("tx25_fec_init\n");
/*
* fec pin init is generic
*/
mx25_fec_init_pins();
/*
* Set up the FEC_RESET_B and FEC_ENABLE GPIO pins.
*
* FEC_RESET_B: gpio4[7] is ALT 5 mode of pin D13
* FEC_ENABLE_B: gpio4[9] is ALT 5 mode of pin D11
*/
muxctl = (struct iomuxc_mux_ctl *)IMX_IOPADMUX_BASE;
padctl = (struct iomuxc_pad_ctl *)IMX_IOPADCTL_BASE;
writel(gpio_mux_mode, &muxctl->pad_d13);
writel(gpio_mux_mode, &muxctl->pad_d11);
writel(0x0, &padctl->pad_d13);
writel(0x0, &padctl->pad_d11);
imx_iomux_v3_setup_multiple_pads(fec_pads, ARRAY_SIZE(fec_pads));
/* drop PHY power and assert reset (low) */
gpio_direction_output(GPIO_FEC_RESET_B, 0);
@ -99,15 +106,10 @@ void tx25_fec_init(void)
* RMII mode is selected by FEC_RX_DV which is GPIO 3_12 in mux mode
*/
/*
* save three current mux modes and set each to gpio mode
* set each mux mode to gpio mode
*/
saved_rdata0_mode = readl(&muxctl->pad_fec_rdata0);
saved_rdata1_mode = readl(&muxctl->pad_fec_rdata1);
saved_rx_dv_mode = readl(&muxctl->pad_fec_rx_dv);
writel(gpio_mux_mode, &muxctl->pad_fec_rdata0);
writel(gpio_mux_mode, &muxctl->pad_fec_rdata1);
writel(gpio_mux_mode, &muxctl->pad_fec_rx_dv);
imx_iomux_v3_setup_multiple_pads(fec_cfg_pads,
ARRAY_SIZE(fec_cfg_pads));
/*
* set each to 1 and make each an output
@ -128,19 +130,46 @@ void tx25_fec_init(void)
/*
* set FEC pins back
*/
writel(saved_rdata0_mode, &muxctl->pad_fec_rdata0);
writel(saved_rdata1_mode, &muxctl->pad_fec_rdata1);
writel(saved_rx_dv_mode, &muxctl->pad_fec_rx_dv);
imx_iomux_v3_setup_multiple_pads(fec_pads, ARRAY_SIZE(fec_pads));
}
#else
#define tx25_fec_init()
#endif
#ifdef CONFIG_MXC_UART
/*
* Set up input pins with hysteresis and 100-k pull-ups
*/
#define UART1_IN_PAD_CTRL (PAD_CTL_HYS | PAD_CTL_PUS_100K_UP)
/*
* FIXME: need to revisit this
* The original code enabled PUE and 100-k pull-down without PKE, so the right
* value here is likely:
* 0 for no pull
* or:
* PAD_CTL_PUS_100K_DOWN for 100-k pull-down
*/
#define UART1_OUT_PAD_CTRL 0
static void tx25_uart1_init(void)
{
static const iomux_v3_cfg_t uart1_pads[] = {
NEW_PAD_CTRL(MX25_PAD_UART1_RXD__UART1_RXD, UART1_IN_PAD_CTRL),
NEW_PAD_CTRL(MX25_PAD_UART1_TXD__UART1_TXD, UART1_OUT_PAD_CTRL),
NEW_PAD_CTRL(MX25_PAD_UART1_RTS__UART1_RTS, UART1_OUT_PAD_CTRL),
NEW_PAD_CTRL(MX25_PAD_UART1_CTS__UART1_CTS, UART1_IN_PAD_CTRL),
};
imx_iomux_v3_setup_multiple_pads(uart1_pads, ARRAY_SIZE(uart1_pads));
}
#else
#define tx25_uart1_init()
#endif
int board_init()
{
#ifdef CONFIG_MXC_UART
mx25_uart1_init_pins();
#endif
tx25_uart1_init();
/* board id for linux */
gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
return 0;