ENGR00177359 - EPDC fb: Add EPDC support to SabreSD board

- Change EPDC pad groups to have one for EPDC enable and one
for EPDC disable.
- Add EPDC and Maxim 17135 structures and functions to SabreSD
board file.  Code pulled in with minimal change from ARM2 board
file.
  One exception: Had to remove regulator_has_full_constraints()
  from max17135_regulator_init() to prevent PFUZE from disabling
  regulators and removing power from the board at the end of
  kernel initialization.

Signed-off-by: Danny Nold <dannynold@freescale.com>

2 files changed, 537 insertions, 28 deletions

diff --git a/arch/arm/mach-mx6/board-mx6dl_sabresd.h b/arch/arm/mach-mx6/board-mx6dl_sabresd.h
index b7c21f0b2b42..07305c94f95b 100644
--- a/arch/arm/mach-mx6/board-mx6dl_sabresd.h
+++ b/arch/arm/mach-mx6/board-mx6dl_sabresd.h
@@ -290,47 +290,75 @@ static iomux_v3_cfg_t mx6dl_sabresd_mipi_sensor_pads[] = {
 	MX6DL_PAD_SD1_CLK__GPIO_1_20,		/* camera RESET */
 };
 
-static iomux_v3_cfg_t mx6dl_sabresd_epdc_pads[] = {
+static iomux_v3_cfg_t mx6dl_sabresd_epdc_enable_pads[] = {
 	/* EPDC */
+	MX6DL_PAD_EIM_A16__EPDC_SDDO_0,
+	MX6DL_PAD_EIM_DA10__EPDC_SDDO_1,
+	MX6DL_PAD_EIM_DA12__EPDC_SDDO_2,
+	MX6DL_PAD_EIM_DA11__EPDC_SDDO_3,
 	MX6DL_PAD_EIM_LBA__EPDC_SDDO_4,
-	MX6DL_PAD_EIM_OE__EPDC_PWRIRQ,
-	MX6DL_PAD_EIM_RW__EPDC_SDDO_7,
+	MX6DL_PAD_EIM_EB2__EPDC_SDDO_5,
 	MX6DL_PAD_EIM_CS0__EPDC_SDDO_6,
-	MX6DL_PAD_EIM_A16__EPDC_SDDO_0,
-	MX6DL_PAD_EIM_A17__EPDC_PWRSTAT,
-	MX6DL_PAD_EIM_A18__EPDC_PWRCTRL_0,
-	MX6DL_PAD_EIM_A19__EPDC_PWRCTRL_1,
-	MX6DL_PAD_EIM_A20__EPDC_PWRCTRL_2,
+	MX6DL_PAD_EIM_RW__EPDC_SDDO_7,
 	MX6DL_PAD_EIM_A21__EPDC_GDCLK,
 	MX6DL_PAD_EIM_A22__EPDC_GDSP,
 	MX6DL_PAD_EIM_A23__EPDC_GDOE,
 	MX6DL_PAD_EIM_A24__EPDC_GDRL,
-	MX6DL_PAD_EIM_D17__EPDC_VCOM_0,
-	MX6DL_PAD_EIM_D18__EPDC_VCOM_1,
-	/* EPDC_PMIC_WAKEUP */
-	MX6DL_PAD_EIM_D20__GPIO_3_20,
-	MX6DL_PAD_EIM_D26__EPDC_SDOED,
-	MX6DL_PAD_EIM_D27__EPDC_SDOE,
-	MX6DL_PAD_EIM_D28__EPDC_PWRCTRL_3,
-	MX6DL_PAD_EIM_D30__EPDC_SDOEZ,
 	MX6DL_PAD_EIM_D31__EPDC_SDCLK,
-	MX6DL_PAD_EIM_EB2__EPDC_SDDO_5,
-	MX6DL_PAD_EIM_BCLK__EPDC_SDCE_9,
-	MX6DL_PAD_EIM_EB0__EPDC_PWRCOM,
-	MX6DL_PAD_EIM_EB1__EPDC_SDSHR,
-	MX6DL_PAD_EIM_DA0__EPDC_SDCLKN,
+	MX6DL_PAD_EIM_D27__EPDC_SDOE,
 	MX6DL_PAD_EIM_DA1__EPDC_SDLE,
+	MX6DL_PAD_EIM_EB1__EPDC_SDSHR,
 	MX6DL_PAD_EIM_DA2__EPDC_BDR_0,
-	MX6DL_PAD_EIM_DA3__EPDC_BDR_1,
 	MX6DL_PAD_EIM_DA4__EPDC_SDCE_0,
 	MX6DL_PAD_EIM_DA5__EPDC_SDCE_1,
 	MX6DL_PAD_EIM_DA6__EPDC_SDCE_2,
-	MX6DL_PAD_EIM_DA7__EPDC_SDCE_3,
-	MX6DL_PAD_EIM_DA8__EPDC_SDCE_4,
-	MX6DL_PAD_EIM_DA9__EPDC_SDCE_5,
-	MX6DL_PAD_EIM_DA10__EPDC_SDDO_1,
-	MX6DL_PAD_EIM_DA11__EPDC_SDDO_3,
-	MX6DL_PAD_EIM_DA12__EPDC_SDDO_2,
+
+	/* EPD PMIC (Maxim 17135) pins */
+	MX6DL_PAD_EIM_A17__GPIO_2_21, /* EPDC_PWRSTAT */
+	MX6DL_PAD_EIM_D17__GPIO_3_17, /* EPDC_VCOM0 */
+	MX6DL_PAD_EIM_A18__GPIO_2_20, /* EPDC_PWRCTRL0 */
+	MX6DL_PAD_EIM_D20__GPIO_3_20, /* EPDC_PMIC_WAKEUP */
+	/*
+	 * Depopulate R121, R123, R133, R138, R139,
+	 * R167, R168, and R627 when using E-BOOK
+	 * Card in 16-bit Data Mode. Meanwhile, comments
+	 * the conflict PIN configurations in above tables
+	 */
+	/*
+	MX6DL_PAD_EIM_CS1__EPDC_SDDO_8,
+	MX6DL_PAD_EIM_DA15__EPDC_SDDO_9,
+	MX6DL_PAD_EIM_D16__EPDC_SDDO_10,
+	MX6DL_PAD_EIM_D23__EPDC_SDDO_11
+	MX6DL_PAD_EIM_D19__EPDC_SDDO_12,
+	MX6DL_PAD_EIM_DA13__EPDC_SDDO_13,
+	MX6DL_PAD_EIM_DA14__EPDC_SDDO_14,
+	MX6DL_PAD_EIM_A25__EPDC_SDDO_15,
+	 */
+};
+
+static iomux_v3_cfg_t mx6dl_sabresd_epdc_disable_pads[] = {
+	/* EPDC */
+	MX6DL_PAD_EIM_A16__GPIO_2_22,
+	MX6DL_PAD_EIM_DA10__GPIO_3_10,
+	MX6DL_PAD_EIM_DA12__GPIO_3_12,
+	MX6DL_PAD_EIM_DA11__GPIO_3_11,
+	MX6DL_PAD_EIM_LBA__GPIO_2_27,
+	MX6DL_PAD_EIM_EB2__GPIO_2_30,
+	MX6DL_PAD_EIM_CS0__GPIO_2_23,
+	MX6DL_PAD_EIM_RW__GPIO_2_26,
+	MX6DL_PAD_EIM_A21__GPIO_2_17,
+	MX6DL_PAD_EIM_A22__GPIO_2_16,
+	MX6DL_PAD_EIM_A23__GPIO_6_6,
+	MX6DL_PAD_EIM_A24__GPIO_5_4,
+	MX6DL_PAD_EIM_D31__GPIO_3_31,
+	MX6DL_PAD_EIM_D27__GPIO_3_27,
+	MX6DL_PAD_EIM_DA1__GPIO_3_1,
+	MX6DL_PAD_EIM_EB1__GPIO_2_29,
+	MX6DL_PAD_EIM_DA2__GPIO_3_2,
+	MX6DL_PAD_EIM_DA4__GPIO_3_4,
+	MX6DL_PAD_EIM_DA5__GPIO_3_5,
+	MX6DL_PAD_EIM_DA6__GPIO_3_6,
+
 	/*
 	 * Depopulate R121, R123, R133, R138, R139,
 	 * R167, R168, and R627 when using E-BOOK
diff --git a/arch/arm/mach-mx6/board-mx6q_sabresd.c b/arch/arm/mach-mx6/board-mx6q_sabresd.c
index e6af04114926..4df143eac28c 100644
--- a/arch/arm/mach-mx6/board-mx6q_sabresd.c
+++ b/arch/arm/mach-mx6/board-mx6q_sabresd.c
@@ -51,6 +51,7 @@
 #include <linux/regulator/consumer.h>
 #include <linux/regulator/machine.h>
 #include <linux/regulator/fixed.h>
+#include <linux/mfd/max17135.h>
 #include <linux/mfd/wm8994/pdata.h>
 #include <linux/mfd/wm8994/gpio.h>
 
@@ -145,11 +146,57 @@
 #define SABRESD_PMIC_INT_B	IMX_GPIO_NR(7, 13)
 #define SABRESD_PFUZE_INT	IMX_GPIO_NR(7, 13)
 
+#define SABRESD_EPDC_SDDO_0	IMX_GPIO_NR(2, 22)
+#define SABRESD_EPDC_SDDO_1	IMX_GPIO_NR(3, 10)
+#define SABRESD_EPDC_SDDO_2	IMX_GPIO_NR(3, 12)
+#define SABRESD_EPDC_SDDO_3	IMX_GPIO_NR(3, 11)
+#define SABRESD_EPDC_SDDO_4	IMX_GPIO_NR(2, 27)
+#define SABRESD_EPDC_SDDO_5	IMX_GPIO_NR(2, 30)
+#define SABRESD_EPDC_SDDO_6	IMX_GPIO_NR(2, 23)
+#define SABRESD_EPDC_SDDO_7	IMX_GPIO_NR(2, 26)
+#define SABRESD_EPDC_SDDO_8	IMX_GPIO_NR(2, 24)
+#define SABRESD_EPDC_SDDO_9	IMX_GPIO_NR(3, 15)
+#define SABRESD_EPDC_SDDO_10	IMX_GPIO_NR(3, 16)
+#define SABRESD_EPDC_SDDO_11	IMX_GPIO_NR(3, 23)
+#define SABRESD_EPDC_SDDO_12	IMX_GPIO_NR(3, 19)
+#define SABRESD_EPDC_SDDO_13	IMX_GPIO_NR(3, 13)
+#define SABRESD_EPDC_SDDO_14	IMX_GPIO_NR(3, 14)
+#define SABRESD_EPDC_SDDO_15	IMX_GPIO_NR(5, 2)
+#define SABRESD_EPDC_GDCLK	IMX_GPIO_NR(2, 17)
+#define SABRESD_EPDC_GDSP	IMX_GPIO_NR(2, 16)
+#define SABRESD_EPDC_GDOE	IMX_GPIO_NR(6, 6)
+#define SABRESD_EPDC_GDRL	IMX_GPIO_NR(5, 4)
+#define SABRESD_EPDC_SDCLK	IMX_GPIO_NR(3, 31)
+#define SABRESD_EPDC_SDOEZ	IMX_GPIO_NR(3, 30)
+#define SABRESD_EPDC_SDOED	IMX_GPIO_NR(3, 26)
+#define SABRESD_EPDC_SDOE	IMX_GPIO_NR(3, 27)
+#define SABRESD_EPDC_SDLE	IMX_GPIO_NR(3, 1)
+#define SABRESD_EPDC_SDCLKN	IMX_GPIO_NR(3, 0)
+#define SABRESD_EPDC_SDSHR	IMX_GPIO_NR(2, 29)
+#define SABRESD_EPDC_PWRCOM	IMX_GPIO_NR(2, 28)
+#define SABRESD_EPDC_PWRSTAT	IMX_GPIO_NR(2, 21)
+#define SABRESD_EPDC_PWRCTRL0	IMX_GPIO_NR(2, 20)
+#define SABRESD_EPDC_PWRCTRL1	IMX_GPIO_NR(2, 19)
+#define SABRESD_EPDC_PWRCTRL2	IMX_GPIO_NR(2, 18)
+#define SABRESD_EPDC_PWRCTRL3	IMX_GPIO_NR(3, 28)
+#define SABRESD_EPDC_BDR0	IMX_GPIO_NR(3, 2)
+#define SABRESD_EPDC_BDR1	IMX_GPIO_NR(3, 3)
+#define SABRESD_EPDC_SDCE0	IMX_GPIO_NR(3, 4)
+#define SABRESD_EPDC_SDCE1	IMX_GPIO_NR(3, 5)
+#define SABRESD_EPDC_SDCE2	IMX_GPIO_NR(3, 6)
+#define SABRESD_EPDC_SDCE3	IMX_GPIO_NR(3, 7)
+#define SABRESD_EPDC_SDCE4	IMX_GPIO_NR(3, 8)
+#define SABRESD_EPDC_PMIC_WAKE	IMX_GPIO_NR(3, 20)
+#define SABRESD_EPDC_PMIC_INT	IMX_GPIO_NR(2, 25)
+#define SABRESD_EPDC_VCOM	IMX_GPIO_NR(3, 17)
+
 static struct clk *sata_clk;
 static int mma8451_position = 3;
 static int mag3110_position;
 
 extern char *gp_reg_id;
+extern int epdc_enabled;
+static int max17135_regulator_init(struct max17135 *max17135);
 
 static const struct esdhc_platform_data mx6q_sabresd_sd2_data __initconst = {
 	.cd_gpio = SABRESD_SD2_CD,
@@ -398,6 +445,186 @@ static struct fsl_mxc_camera_platform_data mipi_csi2_data = {
 	.pwdn = mx6q_mipi_powerdown,
 };
 
+#define mV_to_uV(mV) (mV * 1000)
+#define uV_to_mV(uV) (uV / 1000)
+#define V_to_uV(V) (mV_to_uV(V * 1000))
+#define uV_to_V(uV) (uV_to_mV(uV) / 1000)
+
+static struct regulator_consumer_supply display_consumers[] = {
+	{
+		/* MAX17135 */
+		.supply = "DISPLAY",
+	},
+};
+
+static struct regulator_consumer_supply vcom_consumers[] = {
+	{
+		/* MAX17135 */
+		.supply = "VCOM",
+	},
+};
+
+static struct regulator_consumer_supply v3p3_consumers[] = {
+	{
+		/* MAX17135 */
+		.supply = "V3P3",
+	},
+};
+
+static struct regulator_init_data max17135_init_data[] = {
+	{
+		.constraints = {
+			.name = "DISPLAY",
+			.valid_ops_mask =  REGULATOR_CHANGE_STATUS,
+		},
+		.num_consumer_supplies = ARRAY_SIZE(display_consumers),
+		.consumer_supplies = display_consumers,
+	}, {
+		.constraints = {
+			.name = "GVDD",
+			.min_uV = V_to_uV(20),
+			.max_uV = V_to_uV(20),
+		},
+	}, {
+		.constraints = {
+			.name = "GVEE",
+			.min_uV = V_to_uV(-22),
+			.max_uV = V_to_uV(-22),
+		},
+	}, {
+		.constraints = {
+			.name = "HVINN",
+			.min_uV = V_to_uV(-22),
+			.max_uV = V_to_uV(-22),
+		},
+	}, {
+		.constraints = {
+			.name = "HVINP",
+			.min_uV = V_to_uV(20),
+			.max_uV = V_to_uV(20),
+		},
+	}, {
+		.constraints = {
+			.name = "VCOM",
+			.min_uV = mV_to_uV(-4325),
+			.max_uV = mV_to_uV(-500),
+			.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE |
+			REGULATOR_CHANGE_STATUS,
+		},
+		.num_consumer_supplies = ARRAY_SIZE(vcom_consumers),
+		.consumer_supplies = vcom_consumers,
+	}, {
+		.constraints = {
+			.name = "VNEG",
+			.min_uV = V_to_uV(-15),
+			.max_uV = V_to_uV(-15),
+		},
+	}, {
+		.constraints = {
+			.name = "VPOS",
+			.min_uV = V_to_uV(15),
+			.max_uV = V_to_uV(15),
+		},
+	}, {
+		.constraints = {
+			.name = "V3P3",
+			.valid_ops_mask =  REGULATOR_CHANGE_STATUS,
+		},
+		.num_consumer_supplies = ARRAY_SIZE(v3p3_consumers),
+		.consumer_supplies = v3p3_consumers,
+	},
+};
+
+static struct platform_device max17135_sensor_device = {
+	.name = "max17135_sensor",
+	.id = 0,
+};
+
+static struct max17135_platform_data max17135_pdata __initdata = {
+	.vneg_pwrup = 1,
+	.gvee_pwrup = 1,
+	.vpos_pwrup = 2,
+	.gvdd_pwrup = 1,
+	.gvdd_pwrdn = 1,
+	.vpos_pwrdn = 2,
+	.gvee_pwrdn = 1,
+	.vneg_pwrdn = 1,
+	.gpio_pmic_pwrgood = SABRESD_EPDC_PWRSTAT,
+	.gpio_pmic_vcom_ctrl = SABRESD_EPDC_VCOM,
+	.gpio_pmic_wakeup = SABRESD_EPDC_PMIC_WAKE,
+	.gpio_pmic_v3p3 = SABRESD_EPDC_PWRCTRL0,
+	.gpio_pmic_intr = SABRESD_EPDC_PMIC_INT,
+	.regulator_init = max17135_init_data,
+	.init = max17135_regulator_init,
+};
+
+static int __init max17135_regulator_init(struct max17135 *max17135)
+{
+	struct max17135_platform_data *pdata = &max17135_pdata;
+	int i, ret;
+
+	if (!epdc_enabled) {
+		printk(KERN_DEBUG
+			"max17135_regulator_init abort: EPDC not enabled\n");
+		return 0;
+	}
+
+	max17135->gvee_pwrup = pdata->gvee_pwrup;
+	max17135->vneg_pwrup = pdata->vneg_pwrup;
+	max17135->vpos_pwrup = pdata->vpos_pwrup;
+	max17135->gvdd_pwrup = pdata->gvdd_pwrup;
+	max17135->gvdd_pwrdn = pdata->gvdd_pwrdn;
+	max17135->vpos_pwrdn = pdata->vpos_pwrdn;
+	max17135->vneg_pwrdn = pdata->vneg_pwrdn;
+	max17135->gvee_pwrdn = pdata->gvee_pwrdn;
+
+	max17135->max_wait = pdata->vpos_pwrup + pdata->vneg_pwrup +
+		pdata->gvdd_pwrup + pdata->gvee_pwrup;
+
+	max17135->gpio_pmic_pwrgood = pdata->gpio_pmic_pwrgood;
+	max17135->gpio_pmic_vcom_ctrl = pdata->gpio_pmic_vcom_ctrl;
+	max17135->gpio_pmic_wakeup = pdata->gpio_pmic_wakeup;
+	max17135->gpio_pmic_v3p3 = pdata->gpio_pmic_v3p3;
+	max17135->gpio_pmic_intr = pdata->gpio_pmic_intr;
+
+	gpio_request(max17135->gpio_pmic_wakeup, "epdc-pmic-wake");
+	gpio_direction_output(max17135->gpio_pmic_wakeup, 0);
+
+	gpio_request(max17135->gpio_pmic_vcom_ctrl, "epdc-vcom");
+	gpio_direction_output(max17135->gpio_pmic_vcom_ctrl, 0);
+
+	gpio_request(max17135->gpio_pmic_v3p3, "epdc-v3p3");
+	gpio_direction_output(max17135->gpio_pmic_v3p3, 0);
+
+	gpio_request(max17135->gpio_pmic_intr, "epdc-pmic-int");
+	gpio_direction_input(max17135->gpio_pmic_intr);
+
+	gpio_request(max17135->gpio_pmic_pwrgood, "epdc-pwrstat");
+	gpio_direction_input(max17135->gpio_pmic_pwrgood);
+
+	max17135->vcom_setup = false;
+	max17135->init_done = false;
+
+	for (i = 0; i < MAX17135_NUM_REGULATORS; i++) {
+		ret = max17135_register_regulator(max17135, i,
+			&pdata->regulator_init[i]);
+		if (ret != 0) {
+			printk(KERN_ERR"max17135 regulator init failed: %d\n",
+				ret);
+			return ret;
+		}
+	}
+
+	/*
+	 * TODO: We cannot enable full constraints for now, since
+	 * it results in the PFUZE regulators being disabled
+	 * at the end of boot, which removes power from the board.
+	 */
+	/*regulator_has_full_constraints();*/
+
+	return 0;
+}
+
 static struct imxi2c_platform_data mx6q_sabresd_i2c_data = {
 	.bitrate = 100000,
 };
@@ -437,6 +664,10 @@ static struct i2c_board_info mxc_i2c1_board_info[] __initdata = {
 
 static struct i2c_board_info mxc_i2c2_board_info[] __initdata = {
 	{
+		I2C_BOARD_INFO("max17135", 0x48),
+		.platform_data = &max17135_pdata,
+	},
+	{
 		I2C_BOARD_INFO("egalax_ts", 0x4),
 		.irq = gpio_to_irq(SABRESD_CAP_TCH_INT1),
 	},
@@ -452,6 +683,248 @@ static struct i2c_board_info mxc_i2c2_board_info[] __initdata = {
 	},
 };
 
+static int epdc_get_pins(void)
+{
+	int ret = 0;
+
+	/* Claim GPIOs for EPDC pins - used during power up/down */
+	ret |= gpio_request(SABRESD_EPDC_SDDO_0, "epdc_d0");
+	ret |= gpio_request(SABRESD_EPDC_SDDO_1, "epdc_d1");
+	ret |= gpio_request(SABRESD_EPDC_SDDO_2, "epdc_d2");
+	ret |= gpio_request(SABRESD_EPDC_SDDO_3, "epdc_d3");
+	ret |= gpio_request(SABRESD_EPDC_SDDO_4, "epdc_d4");
+	ret |= gpio_request(SABRESD_EPDC_SDDO_5, "epdc_d5");
+	ret |= gpio_request(SABRESD_EPDC_SDDO_6, "epdc_d6");
+	ret |= gpio_request(SABRESD_EPDC_SDDO_7, "epdc_d7");
+	ret |= gpio_request(SABRESD_EPDC_GDCLK, "epdc_gdclk");
+	ret |= gpio_request(SABRESD_EPDC_GDSP, "epdc_gdsp");
+	ret |= gpio_request(SABRESD_EPDC_GDOE, "epdc_gdoe");
+	ret |= gpio_request(SABRESD_EPDC_GDRL, "epdc_gdrl");
+	ret |= gpio_request(SABRESD_EPDC_SDCLK, "epdc_sdclk");
+	ret |= gpio_request(SABRESD_EPDC_SDOE, "epdc_sdoe");
+	ret |= gpio_request(SABRESD_EPDC_SDLE, "epdc_sdle");
+	ret |= gpio_request(SABRESD_EPDC_SDSHR, "epdc_sdshr");
+	ret |= gpio_request(SABRESD_EPDC_BDR0, "epdc_bdr0");
+	ret |= gpio_request(SABRESD_EPDC_SDCE0, "epdc_sdce0");
+	ret |= gpio_request(SABRESD_EPDC_SDCE1, "epdc_sdce1");
+	ret |= gpio_request(SABRESD_EPDC_SDCE2, "epdc_sdce2");
+
+	return ret;
+}
+
+static void epdc_put_pins(void)
+{
+	gpio_free(SABRESD_EPDC_SDDO_0);
+	gpio_free(SABRESD_EPDC_SDDO_1);
+	gpio_free(SABRESD_EPDC_SDDO_2);
+	gpio_free(SABRESD_EPDC_SDDO_3);
+	gpio_free(SABRESD_EPDC_SDDO_4);
+	gpio_free(SABRESD_EPDC_SDDO_5);
+	gpio_free(SABRESD_EPDC_SDDO_6);
+	gpio_free(SABRESD_EPDC_SDDO_7);
+	gpio_free(SABRESD_EPDC_GDCLK);
+	gpio_free(SABRESD_EPDC_GDSP);
+	gpio_free(SABRESD_EPDC_GDOE);
+	gpio_free(SABRESD_EPDC_GDRL);
+	gpio_free(SABRESD_EPDC_SDCLK);
+	gpio_free(SABRESD_EPDC_SDOE);
+	gpio_free(SABRESD_EPDC_SDLE);
+	gpio_free(SABRESD_EPDC_SDSHR);
+	gpio_free(SABRESD_EPDC_BDR0);
+	gpio_free(SABRESD_EPDC_SDCE0);
+	gpio_free(SABRESD_EPDC_SDCE1);
+	gpio_free(SABRESD_EPDC_SDCE2);
+}
+
+static void epdc_enable_pins(void)
+{
+	/* Configure MUX settings to enable EPDC use */
+	mxc_iomux_v3_setup_multiple_pads(mx6dl_sabresd_epdc_enable_pads, \
+				ARRAY_SIZE(mx6dl_sabresd_epdc_enable_pads));
+
+	gpio_direction_input(SABRESD_EPDC_SDDO_0);
+	gpio_direction_input(SABRESD_EPDC_SDDO_1);
+	gpio_direction_input(SABRESD_EPDC_SDDO_2);
+	gpio_direction_input(SABRESD_EPDC_SDDO_3);
+	gpio_direction_input(SABRESD_EPDC_SDDO_4);
+	gpio_direction_input(SABRESD_EPDC_SDDO_5);
+	gpio_direction_input(SABRESD_EPDC_SDDO_6);
+	gpio_direction_input(SABRESD_EPDC_SDDO_7);
+	gpio_direction_input(SABRESD_EPDC_GDCLK);
+	gpio_direction_input(SABRESD_EPDC_GDSP);
+	gpio_direction_input(SABRESD_EPDC_GDOE);
+	gpio_direction_input(SABRESD_EPDC_GDRL);
+	gpio_direction_input(SABRESD_EPDC_SDCLK);
+	gpio_direction_input(SABRESD_EPDC_SDOE);
+	gpio_direction_input(SABRESD_EPDC_SDLE);
+	gpio_direction_input(SABRESD_EPDC_SDSHR);
+	gpio_direction_input(SABRESD_EPDC_BDR0);
+	gpio_direction_input(SABRESD_EPDC_SDCE0);
+	gpio_direction_input(SABRESD_EPDC_SDCE1);
+	gpio_direction_input(SABRESD_EPDC_SDCE2);
+}
+
+static void epdc_disable_pins(void)
+{
+	/* Configure MUX settings for EPDC pins to
+	 * GPIO and drive to 0. */
+	mxc_iomux_v3_setup_multiple_pads(mx6dl_sabresd_epdc_disable_pads, \
+				ARRAY_SIZE(mx6dl_sabresd_epdc_disable_pads));
+
+	gpio_direction_output(SABRESD_EPDC_SDDO_0, 0);
+	gpio_direction_output(SABRESD_EPDC_SDDO_1, 0);
+	gpio_direction_output(SABRESD_EPDC_SDDO_2, 0);
+	gpio_direction_output(SABRESD_EPDC_SDDO_3, 0);
+	gpio_direction_output(SABRESD_EPDC_SDDO_4, 0);
+	gpio_direction_output(SABRESD_EPDC_SDDO_5, 0);
+	gpio_direction_output(SABRESD_EPDC_SDDO_6, 0);
+	gpio_direction_output(SABRESD_EPDC_SDDO_7, 0);
+	gpio_direction_output(SABRESD_EPDC_GDCLK, 0);
+	gpio_direction_output(SABRESD_EPDC_GDSP, 0);
+	gpio_direction_output(SABRESD_EPDC_GDOE, 0);
+	gpio_direction_output(SABRESD_EPDC_GDRL, 0);
+	gpio_direction_output(SABRESD_EPDC_SDCLK, 0);
+	gpio_direction_output(SABRESD_EPDC_SDOE, 0);
+	gpio_direction_output(SABRESD_EPDC_SDLE, 0);
+	gpio_direction_output(SABRESD_EPDC_SDSHR, 0);
+	gpio_direction_output(SABRESD_EPDC_BDR0, 0);
+	gpio_direction_output(SABRESD_EPDC_SDCE0, 0);
+	gpio_direction_output(SABRESD_EPDC_SDCE1, 0);
+	gpio_direction_output(SABRESD_EPDC_SDCE2, 0);
+}
+
+static struct fb_videomode e60_v110_mode = {
+	.name = "E60_V110",
+	.refresh = 50,
+	.xres = 800,
+	.yres = 600,
+	.pixclock = 18604700,
+	.left_margin = 8,
+	.right_margin = 178,
+	.upper_margin = 4,
+	.lower_margin = 10,
+	.hsync_len = 20,
+	.vsync_len = 4,
+	.sync = 0,
+	.vmode = FB_VMODE_NONINTERLACED,
+	.flag = 0,
+};
+static struct fb_videomode e60_v220_mode = {
+	.name = "E60_V220",
+	.refresh = 85,
+	.xres = 800,
+	.yres = 600,
+	.pixclock = 30000000,
+	.left_margin = 8,
+	.right_margin = 164,
+	.upper_margin = 4,
+	.lower_margin = 8,
+	.hsync_len = 4,
+	.vsync_len = 1,
+	.sync = 0,
+	.vmode = FB_VMODE_NONINTERLACED,
+	.flag = 0,
+	.refresh = 85,
+	.xres = 800,
+	.yres = 600,
+};
+static struct fb_videomode e060scm_mode = {
+	.name = "E060SCM",
+	.refresh = 85,
+	.xres = 800,
+	.yres = 600,
+	.pixclock = 26666667,
+	.left_margin = 8,
+	.right_margin = 100,
+	.upper_margin = 4,
+	.lower_margin = 8,
+	.hsync_len = 4,
+	.vsync_len = 1,
+	.sync = 0,
+	.vmode = FB_VMODE_NONINTERLACED,
+	.flag = 0,
+};
+static struct fb_videomode e97_v110_mode = {
+	.name = "E97_V110",
+	.refresh = 50,
+	.xres = 1200,
+	.yres = 825,
+	.pixclock = 32000000,
+	.left_margin = 12,
+	.right_margin = 128,
+	.upper_margin = 4,
+	.lower_margin = 10,
+	.hsync_len = 20,
+	.vsync_len = 4,
+	.sync = 0,
+	.vmode = FB_VMODE_NONINTERLACED,
+	.flag = 0,
+};
+
+static struct imx_epdc_fb_mode panel_modes[] = {
+	{
+		&e60_v110_mode,
+		4,      /* vscan_holdoff */
+		10,     /* sdoed_width */
+		20,     /* sdoed_delay */
+		10,     /* sdoez_width */
+		20,     /* sdoez_delay */
+		428,    /* gdclk_hp_offs */
+		20,     /* gdsp_offs */
+		0,      /* gdoe_offs */
+		1,      /* gdclk_offs */
+		1,      /* num_ce */
+	},
+	{
+		&e60_v220_mode,
+		4,      /* vscan_holdoff */
+		10,     /* sdoed_width */
+		20,     /* sdoed_delay */
+		10,     /* sdoez_width */
+		20,     /* sdoez_delay */
+		465,    /* gdclk_hp_offs */
+		20,     /* gdsp_offs */
+		0,      /* gdoe_offs */
+		9,      /* gdclk_offs */
+		1,      /* num_ce */
+	},
+	{
+		&e060scm_mode,
+		4,      /* vscan_holdoff */
+		10,     /* sdoed_width */
+		20,     /* sdoed_delay */
+		10,     /* sdoez_width */
+		20,     /* sdoez_delay */
+		419,    /* gdclk_hp_offs */
+		20,     /* gdsp_offs */
+		0,      /* gdoe_offs */
+		5,      /* gdclk_offs */
+		1,      /* num_ce */
+	},
+	{
+		&e97_v110_mode,
+		8,      /* vscan_holdoff */
+		10,     /* sdoed_width */
+		20,     /* sdoed_delay */
+		10,     /* sdoez_width */
+		20,     /* sdoez_delay */
+		632,    /* gdclk_hp_offs */
+		20,     /* gdsp_offs */
+		0,      /* gdoe_offs */
+		1,      /* gdclk_offs */
+		3,      /* num_ce */
+	}
+};
+
+static struct imx_epdc_fb_platform_data epdc_data = {
+	.epdc_mode = panel_modes,
+	.num_modes = ARRAY_SIZE(panel_modes),
+	.get_pins = epdc_get_pins,
+	.put_pins = epdc_put_pins,
+	.enable_pins = epdc_enable_pins,
+	.disable_pins = epdc_disable_pins,
+};
+
 static void imx6q_sabresd_usbotg_vbus(bool on)
 {
 	if (on)
@@ -967,6 +1440,14 @@ static void __init mx6_sabresd_board_init(void)
 	imx6q_add_hdmi_soc();
 	imx6q_add_hdmi_soc_dai();
 
+	if (cpu_is_mx6dl()) {
+		imx6dl_add_imx_pxp();
+		imx6dl_add_imx_pxp_client();
+		if (epdc_enabled) {
+			mxc_register_device(&max17135_sensor_device, NULL);
+			imx6dl_add_imx_epdc(&epdc_data);
+		}
+	}
 	/*
 	ret = gpio_request_array(mx6q_sabresd_flexcan_gpios,
 			ARRAY_SIZE(mx6q_sabresd_flexcan_gpios));