diff options
Diffstat (limited to 'arch/arm/mach-mxs/mach-mxs.c')
| -rw-r--r-- | arch/arm/mach-mxs/mach-mxs.c | 169 |
1 files changed, 127 insertions, 42 deletions
diff --git a/arch/arm/mach-mxs/mach-mxs.c b/arch/arm/mach-mxs/mach-mxs.c index ff886e01a0b0..4748ec551a68 100644 --- a/arch/arm/mach-mxs/mach-mxs.c +++ b/arch/arm/mach-mxs/mach-mxs.c @@ -12,18 +12,21 @@ #include <linux/clk.h> #include <linux/clkdev.h> +#include <linux/can/platform/flexcan.h> +#include <linux/delay.h> #include <linux/err.h> +#include <linux/gpio.h> #include <linux/init.h> -#include <linux/init.h> -#include <linux/irqdomain.h> #include <linux/micrel_phy.h> #include <linux/mxsfb.h> -#include <linux/of_irq.h> #include <linux/of_platform.h> #include <linux/phy.h> +#include <linux/pinctrl/consumer.h> #include <asm/mach/arch.h> #include <asm/mach/time.h> #include <mach/common.h> +#include <mach/digctl.h> +#include <mach/mxs.h> static struct fb_videomode mx23evk_video_modes[] = { { @@ -99,43 +102,43 @@ static struct fb_videomode apx4devkit_video_modes[] = { static struct mxsfb_platform_data mxsfb_pdata __initdata; -static struct of_dev_auxdata mxs_auxdata_lookup[] __initdata = { - OF_DEV_AUXDATA("fsl,imx23-lcdif", 0x80030000, NULL, &mxsfb_pdata), - OF_DEV_AUXDATA("fsl,imx28-lcdif", 0x80030000, NULL, &mxsfb_pdata), - { /* sentinel */ } -}; +/* + * MX28EVK_FLEXCAN_SWITCH is shared between both flexcan controllers + */ +#define MX28EVK_FLEXCAN_SWITCH MXS_GPIO_NR(2, 13) -static int __init mxs_icoll_add_irq_domain(struct device_node *np, - struct device_node *interrupt_parent) -{ - irq_domain_add_legacy(np, 128, 0, 0, &irq_domain_simple_ops, NULL); +static int flexcan0_en, flexcan1_en; - return 0; +static void mx28evk_flexcan_switch(void) +{ + if (flexcan0_en || flexcan1_en) + gpio_set_value(MX28EVK_FLEXCAN_SWITCH, 1); + else + gpio_set_value(MX28EVK_FLEXCAN_SWITCH, 0); } -static int __init mxs_gpio_add_irq_domain(struct device_node *np, - struct device_node *interrupt_parent) +static void mx28evk_flexcan0_switch(int enable) { - static int gpio_irq_base = MXS_GPIO_IRQ_START; - - irq_domain_add_legacy(np, 32, gpio_irq_base, 0, &irq_domain_simple_ops, NULL); - gpio_irq_base += 32; + flexcan0_en = enable; + mx28evk_flexcan_switch(); +} - return 0; +static void mx28evk_flexcan1_switch(int enable) +{ + flexcan1_en = enable; + mx28evk_flexcan_switch(); } -static const struct of_device_id mxs_irq_match[] __initconst = { - { .compatible = "fsl,mxs-icoll", .data = mxs_icoll_add_irq_domain, }, - { .compatible = "fsl,mxs-gpio", .data = mxs_gpio_add_irq_domain, }, +static struct flexcan_platform_data flexcan_pdata[2]; + +static struct of_dev_auxdata mxs_auxdata_lookup[] __initdata = { + OF_DEV_AUXDATA("fsl,imx23-lcdif", 0x80030000, NULL, &mxsfb_pdata), + OF_DEV_AUXDATA("fsl,imx28-lcdif", 0x80030000, NULL, &mxsfb_pdata), + OF_DEV_AUXDATA("fsl,imx28-flexcan", 0x80032000, NULL, &flexcan_pdata[0]), + OF_DEV_AUXDATA("fsl,imx28-flexcan", 0x80034000, NULL, &flexcan_pdata[1]), { /* sentinel */ } }; -static void __init mxs_dt_init_irq(void) -{ - icoll_init_irq(); - of_irq_init(mxs_irq_match); -} - static void __init imx23_timer_init(void) { mx23_clocks_init(); @@ -237,13 +240,21 @@ static void __init imx28_evk_init(void) mxsfb_pdata.mode_count = ARRAY_SIZE(mx28evk_video_modes); mxsfb_pdata.default_bpp = 32; mxsfb_pdata.ld_intf_width = STMLCDIF_24BIT; + + mxs_saif_clkmux_select(MXS_DIGCTL_SAIF_CLKMUX_EXTMSTR0); } -static void __init m28evk_init(void) +static void __init imx28_evk_post_init(void) { - enable_clk_enet_out(); - update_fec_mac_prop(OUI_DENX); + if (!gpio_request_one(MX28EVK_FLEXCAN_SWITCH, GPIOF_DIR_OUT, + "flexcan-switch")) { + flexcan_pdata[0].transceiver_switch = mx28evk_flexcan0_switch; + flexcan_pdata[1].transceiver_switch = mx28evk_flexcan1_switch; + } +} +static void __init m28evk_init(void) +{ mxsfb_pdata.mode_list = m28evk_video_modes; mxsfb_pdata.mode_count = ARRAY_SIZE(m28evk_video_modes); mxsfb_pdata.default_bpp = 16; @@ -270,6 +281,80 @@ static void __init apx4devkit_init(void) mxsfb_pdata.ld_intf_width = STMLCDIF_24BIT; } +#define ENET0_MDC__GPIO_4_0 MXS_GPIO_NR(4, 0) +#define ENET0_MDIO__GPIO_4_1 MXS_GPIO_NR(4, 1) +#define ENET0_RX_EN__GPIO_4_2 MXS_GPIO_NR(4, 2) +#define ENET0_RXD0__GPIO_4_3 MXS_GPIO_NR(4, 3) +#define ENET0_RXD1__GPIO_4_4 MXS_GPIO_NR(4, 4) +#define ENET0_TX_EN__GPIO_4_6 MXS_GPIO_NR(4, 6) +#define ENET0_TXD0__GPIO_4_7 MXS_GPIO_NR(4, 7) +#define ENET0_TXD1__GPIO_4_8 MXS_GPIO_NR(4, 8) +#define ENET_CLK__GPIO_4_16 MXS_GPIO_NR(4, 16) + +#define TX28_FEC_PHY_POWER MXS_GPIO_NR(3, 29) +#define TX28_FEC_PHY_RESET MXS_GPIO_NR(4, 13) +#define TX28_FEC_nINT MXS_GPIO_NR(4, 5) + +static const struct gpio tx28_gpios[] __initconst = { + { ENET0_MDC__GPIO_4_0, GPIOF_OUT_INIT_LOW, "GPIO_4_0" }, + { ENET0_MDIO__GPIO_4_1, GPIOF_OUT_INIT_LOW, "GPIO_4_1" }, + { ENET0_RX_EN__GPIO_4_2, GPIOF_OUT_INIT_LOW, "GPIO_4_2" }, + { ENET0_RXD0__GPIO_4_3, GPIOF_OUT_INIT_LOW, "GPIO_4_3" }, + { ENET0_RXD1__GPIO_4_4, GPIOF_OUT_INIT_LOW, "GPIO_4_4" }, + { ENET0_TX_EN__GPIO_4_6, GPIOF_OUT_INIT_LOW, "GPIO_4_6" }, + { ENET0_TXD0__GPIO_4_7, GPIOF_OUT_INIT_LOW, "GPIO_4_7" }, + { ENET0_TXD1__GPIO_4_8, GPIOF_OUT_INIT_LOW, "GPIO_4_8" }, + { ENET_CLK__GPIO_4_16, GPIOF_OUT_INIT_LOW, "GPIO_4_16" }, + { TX28_FEC_PHY_POWER, GPIOF_OUT_INIT_LOW, "fec-phy-power" }, + { TX28_FEC_PHY_RESET, GPIOF_OUT_INIT_LOW, "fec-phy-reset" }, + { TX28_FEC_nINT, GPIOF_DIR_IN, "fec-int" }, +}; + +static void __init tx28_post_init(void) +{ + struct device_node *np; + struct platform_device *pdev; + struct pinctrl *pctl; + int ret; + + enable_clk_enet_out(); + + np = of_find_compatible_node(NULL, NULL, "fsl,imx28-fec"); + pdev = of_find_device_by_node(np); + if (!pdev) { + pr_err("%s: failed to find fec device\n", __func__); + return; + } + + pctl = pinctrl_get_select(&pdev->dev, "gpio_mode"); + if (IS_ERR(pctl)) { + pr_err("%s: failed to get pinctrl state\n", __func__); + return; + } + + ret = gpio_request_array(tx28_gpios, ARRAY_SIZE(tx28_gpios)); + if (ret) { + pr_err("%s: failed to request gpios: %d\n", __func__, ret); + return; + } + + /* Power up fec phy */ + gpio_set_value(TX28_FEC_PHY_POWER, 1); + msleep(26); /* 25ms according to data sheet */ + + /* Mode strap pins */ + gpio_set_value(ENET0_RX_EN__GPIO_4_2, 1); + gpio_set_value(ENET0_RXD0__GPIO_4_3, 1); + gpio_set_value(ENET0_RXD1__GPIO_4_4, 1); + + udelay(100); /* minimum assertion time for nRST */ + + /* Deasserting FEC PHY RESET */ + gpio_set_value(TX28_FEC_PHY_RESET, 1); + + pinctrl_put(pctl); +} + static void __init mxs_machine_init(void) { if (of_machine_is_compatible("fsl,imx28-evk")) @@ -283,29 +368,28 @@ static void __init mxs_machine_init(void) of_platform_populate(NULL, of_default_bus_match_table, mxs_auxdata_lookup, NULL); + + if (of_machine_is_compatible("karo,tx28")) + tx28_post_init(); + + if (of_machine_is_compatible("fsl,imx28-evk")) + imx28_evk_post_init(); } static const char *imx23_dt_compat[] __initdata = { - "fsl,imx23-evk", - "fsl,stmp378x_devb" - "olimex,imx23-olinuxino", "fsl,imx23", NULL, }; static const char *imx28_dt_compat[] __initdata = { - "bluegiga,apx4devkit", - "crystalfontz,cfa10036", - "denx,m28evk", - "fsl,imx28-evk", - "karo,tx28", "fsl,imx28", NULL, }; DT_MACHINE_START(IMX23, "Freescale i.MX23 (Device Tree)") .map_io = mx23_map_io, - .init_irq = mxs_dt_init_irq, + .init_irq = icoll_init_irq, + .handle_irq = icoll_handle_irq, .timer = &imx23_timer, .init_machine = mxs_machine_init, .dt_compat = imx23_dt_compat, @@ -314,7 +398,8 @@ MACHINE_END DT_MACHINE_START(IMX28, "Freescale i.MX28 (Device Tree)") .map_io = mx28_map_io, - .init_irq = mxs_dt_init_irq, + .init_irq = icoll_init_irq, + .handle_irq = icoll_handle_irq, .timer = &imx28_timer, .init_machine = mxs_machine_init, .dt_compat = imx28_dt_compat, |