#include <linux/clk.h>
#include <linux/clkdev.h>
+#include <linux/can/platform/flexcan.h>
+#include <linux/delay.h>
#include <linux/err.h>
-#include <linux/init.h>
+#include <linux/gpio.h>
#include <linux/init.h>
#include <linux/irqdomain.h>
#include <linux/micrel_phy.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[] = {
{
static struct mxsfb_platform_data mxsfb_pdata __initdata;
+/*
+ * MX28EVK_FLEXCAN_SWITCH is shared between both flexcan controllers
+ */
+#define MX28EVK_FLEXCAN_SWITCH MXS_GPIO_NR(2, 13)
+
+static int flexcan0_en, flexcan1_en;
+
+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 void mx28evk_flexcan0_switch(int enable)
+{
+ flexcan0_en = enable;
+ mx28evk_flexcan_switch();
+}
+
+static void mx28evk_flexcan1_switch(int enable)
+{
+ flexcan1_en = enable;
+ mx28evk_flexcan_switch();
+}
+
+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 */ }
};
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;
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"))
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,
};
projects / karo-tx-linux.git / blobdiff