Add device tree and EEPROM code to kernel

4 files changed, 673 insertions, 0 deletions

diff --git a/recipes-kernel/linux/linux-at91-4.9/linux-4.9-add-num_accessory_ports-config-option.patch b/recipes-kernel/linux/linux-at91-4.9/linux-4.9-add-num_accessory_ports-config-option.patch
new file mode 100644
index 0000000..d1bd7cd
--- /dev/null
+++ b/recipes-kernel/linux/linux-at91-4.9/linux-4.9-add-num_accessory_ports-config-option.patch
@@ -0,0 +1,22 @@
+Index: linux-3.12.13/arch/arm/Kconfig
+===================================================================
+--- linux-3.12.13.orig/arch/arm/Kconfig	2014-02-22 15:32:50.000000000 -0600
++++ linux-3.12.13/arch/arm/Kconfig	2014-09-11 14:57:00.908030666 -0500
+@@ -276,6 +276,17 @@
+ 
+ source "kernel/Kconfig.freezer"
+ 
++menu "MTS"
++
++config MTS_NUM_ACCESSORY_PORTS
++	int "Number of accessory ports in the MTS product"
++	default 0
++	help
++	  Enter the number of accessory ports on your MTS device.
++	  If unsure, say '0'.
++
++endmenu
++
+ menu "System Type"
+ 
+ config MMU
diff --git a/recipes-kernel/linux/linux-at91-4.9/mtcdt/linux-4.9-eeprom-setup-mtcdt.patch b/recipes-kernel/linux/linux-at91-4.9/mtcdt/linux-4.9-eeprom-setup-mtcdt.patch
new file mode 100644
index 0000000..a738ddd
--- /dev/null
+++ b/recipes-kernel/linux/linux-at91-4.9/mtcdt/linux-4.9-eeprom-setup-mtcdt.patch
@@ -0,0 +1,163 @@
+diff -Naru 4.9+gitAUTOINC+29796588eb.orig/arch/arm/mach-at91/at91sam9.c 4.9+gitAUTOINC+29796588eb/arch/arm/mach-at91/at91sam9.c
+--- 4.9+gitAUTOINC+29796588eb.orig/arch/arm/mach-at91/at91sam9.c	2018-10-23 11:58:04.826463464 -0500
++++ 4.9+gitAUTOINC+29796588eb/arch/arm/mach-at91/at91sam9.c	2018-10-23 11:54:56.166469050 -0500
+@@ -14,6 +14,87 @@
+ #include <asm/system_misc.h>
+ 
+ #include "generic.h"
++#include <linux/mts_at24.h>
++
++uint8_t mts_id_eeprom[512];
++
++EXPORT_SYMBOL(mts_id_eeprom);
++
++static void mts_id_eeprom_load(struct nvmem_device *nvmem, void *context)
++{
++	int tmp;
++
++	memset(mts_id_eeprom, 0, sizeof(mts_id_eeprom));
++
++	tmp = nvmem_device_read(nvmem, 0, sizeof(mts_id_eeprom), mts_id_eeprom);
++	if (tmp != sizeof(mts_id_eeprom)) {
++		printk(KERN_ERR "sam9x5: id eeprom read failed: %d\n", tmp);
++	} else {
++		printk(KERN_INFO "sam9x5: read %d bytes from id eeprom\n", tmp);
++	}
++}
++
++struct mts_eeprom_callback id_eeprom_callback = {
++	.address = 0x56,
++	.index = -1,
++	.setup = mts_id_eeprom_load,
++};
++
++#ifdef CONFIG_MTS_NUM_ACCESSORY_PORTS
++#define NUM_AP CONFIG_MTS_NUM_ACCESSORY_PORTS
++#else
++#define NUM_AP 0
++#endif
++
++#if NUM_AP > 0
++
++uint8_t mts_ap_eeprom[NUM_AP][512];
++
++EXPORT_SYMBOL(mts_ap_eeprom);
++
++static void mts_ap_eeprom_load(struct nvmem_device *nvmem, void *context)
++{
++	int tmp;
++	int* index = (int*)context;
++
++	memset(mts_ap_eeprom[*index], 0, sizeof(mts_ap_eeprom[*index]));
++
++	tmp = macc->read(macc, mts_ap_eeprom[*index], 0, sizeof(mts_ap_eeprom[*index]));
++	tmp = nvmem_device_read(nvmem, 0, sizeof(mts_ap_eeprom[*index]), mts_ap_eeprom[*index]);
++	if (tmp != sizeof(mts_ap_eeprom[*index])) {
++		printk(KERN_INFO "sam9x5: ap%d eeprom read failed: %d\n", *index + 1, tmp);
++	} else {
++		printk(KERN_INFO "sam9x5: read %d bytes from ap%d eeprom\n", tmp, *index + 1);
++	}
++}
++
++struct mts_eeprom_callback ap1_eeprom_callback = {
++	.address = 0x50,
++	.index = 0,
++	.setup = mts_ap_eeprom_load,
++};
++
++struct mts_eeprom_callback ap2_eeprom_callback = {
++	.address = 0x52,
++	.index = 1,
++	.setup = mts_ap_eeprom_load,
++};
++
++struct mts_eeprom_callback* mts_eeprom_callback_lookup[] = {
++	&id_eeprom_callback,
++	&ap1_eeprom_callback,
++	&ap2_eeprom_callback,
++	NULL
++};
++
++#else
++
++struct mts_eeprom_callback* mts_eeprom_callback_lookup[] = {
++	&id_eeprom_callback,
++	NULL
++};
++
++#endif
+ 
+ static void __init at91sam9_init(void)
+ {
+Index: linux-3.12.27/drivers/misc/eeprom/at24.c
+===================================================================
+--- linux-3.12.27.orig/drivers/misc/eeprom/at24.c	2014-08-26 07:12:26.000000000 -0500
++++ linux-3.12.27/drivers/misc/eeprom/at24.c	2014-09-23 11:41:52.470331651 -0500
+@@ -24,6 +24,8 @@
+ #include <linux/i2c.h>
+ #include <linux/i2c/at24.h>
+ 
++#include <linux/mts_at24.h>
++
+ /*
+  * I2C EEPROMs from most vendors are inexpensive and mostly interchangeable.
+  * Differences between different vendor product lines (like Atmel AT24C or
+@@ -473,6 +475,23 @@
+ 			chip->page_size = be32_to_cpup(val);
+ 	}
+ }
++
++static void at24_get_setup(struct i2c_client *client,
++		struct at24_platform_data *chip)
++{
++	int i;
++
++	for (i = 0; mts_eeprom_callback_lookup[i] != NULL; i++) {
++		if (mts_eeprom_callback_lookup[i]->address == client->addr) {
++			printk(KERN_INFO "%s: found a match for eeprom at %X\n", __func__, client->addr);
++			chip->setup = mts_eeprom_callback_lookup[i]->setup;
++			if (mts_eeprom_callback_lookup[i]->index > -1) {
++				chip->context = (void*)&mts_eeprom_callback_lookup[i]->index;
++			}
++			break;
++		}
++	}
++}
+ #else
+ static void at24_get_ofdata(struct i2c_client *client,
+ 		struct at24_platform_data *chip)
+@@ -505,12 +524,14 @@
+ 		 * is recommended anyhow.
+ 		 */
+ 		chip.page_size = 1;
++		chip.setup = NULL;
++		chip.context = NULL;
+ 
+ 		/* update chipdata if OF is present */
+ 		at24_get_ofdata(client, &chip);
+ 
+-		chip.setup = NULL;
+-		chip.context = NULL;
++		/* see if we have a setup callback */
++		at24_get_setup(client, &chip);
+ 	}
+ 
+ 	if (!is_power_of_2(chip.byte_len))
+diff -Naru 4.9+gitAUTOINC+29796588eb.orig/include/linux/mts_at24.h 4.9+gitAUTOINC+29796588eb/include/linux/mts_at24.h
+--- 4.9+gitAUTOINC+29796588eb.orig/include/linux/mts_at24.h	1969-12-31 18:00:00.000000000 -0600
++++ 4.9+gitAUTOINC+29796588eb/include/linux/mts_at24.h	2018-10-23 11:45:29.406485828 -0500
+@@ -0,0 +1,14 @@
++#ifndef _LINUX_MTSAT24_H
++#define _LINUX_MTSAT24_H
++
++#include <linux/nvmem-consumer.h>
++
++struct mts_eeprom_callback {
++    unsigned short      address;
++    int         index;
++    void		(*setup)(struct nvmem_device *, void *context);
++};
++
++extern struct mts_eeprom_callback* mts_eeprom_callback_lookup[];
++
++#endif /* _LINUX_MTSAT24_H */
diff --git a/recipes-kernel/linux/linux-at91-4.9/mtcdt/linux-4.9-mtcdt-device-tree.patch b/recipes-kernel/linux/linux-at91-4.9/mtcdt/linux-4.9-mtcdt-device-tree.patch
new file mode 100644
index 0000000..c6d2915
--- /dev/null
+++ b/recipes-kernel/linux/linux-at91-4.9/mtcdt/linux-4.9-mtcdt-device-tree.patch
@@ -0,0 +1,476 @@
+Index: linux-3.12.27/arch/arm/boot/dts/mtcdt.dts
+===================================================================
+--- /dev/null	1970-01-01 00:00:00.000000000 +0000
++++ linux-3.12.27/arch/arm/boot/dts/mtcdt.dts	2016-09-19 15:34:25.111103538 -0500
+@@ -0,0 +1,279 @@
++/*
++ * DTS file for Multi-Tech Systems MTCDT Hardware
++ */
++
++/dts-v1/;
++#include "at91sam9g25.dtsi"
++#include "at91sam9x5ek.dtsi"
++
++/ {
++    model = "Multi-Tech Systems MTCDT";
++    compatible = "atmel,at91sam9g25ek", "atmel,at91sam9x5ek", "atmel,at91sam9x5", "atmel,at91sam9";
++
++    ahb {
++	apb {
++	    macb0: ethernet@f802c000 {
++		phy-mode = "rmii";
++		status = "okay";
++	    };
++
++            pinctrl@fffff400 {
++		nand {
++		    pinctrl_nand: nand-0 {
++			atmel,pins =
++			    <AT91_PIOD 0 AT91_PERIPH_A AT91_PINCTRL_PULL_UP	/* PD0 periph A Read Enable */
++			    AT91_PIOD 1 AT91_PERIPH_A AT91_PINCTRL_PULL_UP	/* PD1 periph A Write Enable */
++			    AT91_PIOD 2 AT91_PERIPH_A AT91_PINCTRL_PULL_UP	/* PD2 periph A Address Latch Enable */
++			    AT91_PIOD 3 AT91_PERIPH_A AT91_PINCTRL_PULL_UP	/* PD3 periph A Command Latch Enable */
++			    AT91_PIOD 4 AT91_PERIPH_GPIO AT91_PINCTRL_PULL_UP	/* PD4 gpio Chip Enable pin pull_up */
++			    AT91_PIOC 31 AT91_PERIPH_GPIO AT91_PINCTRL_PULL_UP	/* PC31 gpio RDY/BUSY pin pull_up */
++			    AT91_PIOD 6 AT91_PERIPH_A AT91_PINCTRL_PULL_UP	/* PD6 periph A Data bit 0 */
++			    AT91_PIOD 7 AT91_PERIPH_A AT91_PINCTRL_PULL_UP	/* PD7 periph A Data bit 1 */
++			    AT91_PIOD 8 AT91_PERIPH_A AT91_PINCTRL_PULL_UP	/* PD8 periph A Data bit 2 */
++			    AT91_PIOD 9 AT91_PERIPH_A AT91_PINCTRL_PULL_UP	/* PD9 periph A Data bit 3 */
++			    AT91_PIOD 10 AT91_PERIPH_A AT91_PINCTRL_PULL_UP	/* PD10 periph A Data bit 4 */
++			    AT91_PIOD 11 AT91_PERIPH_A AT91_PINCTRL_PULL_UP	/* PD11 periph A Data bit 5 */
++			    AT91_PIOD 12 AT91_PERIPH_A AT91_PINCTRL_PULL_UP	/* PD12 periph A Data bit 6 */
++			    AT91_PIOD 13 AT91_PERIPH_A AT91_PINCTRL_PULL_UP>;	/* PD13 periph A Data bit 7 */
++		    };
++
++		    pinctrl_nand_16bits: nand_16bits-0 {
++			atmel,pins =
++			    <AT91_PIOD 14 AT91_PERIPH_A AT91_PINCTRL_PULL_UP	/* PD14 periph A Data bit 8 */
++			    AT91_PIOD 15 AT91_PERIPH_A AT91_PINCTRL_PULL_UP	/* PD15 periph A Data bit 9 */
++			    AT91_PIOD 16 AT91_PERIPH_A AT91_PINCTRL_PULL_UP	/* PD16 periph A Data bit 10 */
++			    AT91_PIOD 17 AT91_PERIPH_A AT91_PINCTRL_PULL_UP	/* PD17 periph A Data bit 11 */
++			    AT91_PIOD 18 AT91_PERIPH_A AT91_PINCTRL_PULL_UP	/* PD18 periph A Data bit 12 */
++			    AT91_PIOD 19 AT91_PERIPH_A AT91_PINCTRL_PULL_UP	/* PD19 periph A Data bit 13 */
++			    AT91_PIOD 20 AT91_PERIPH_A AT91_PINCTRL_PULL_UP	/* PD20 periph A Data bit 14 */
++			    AT91_PIOD 21 AT91_PERIPH_A AT91_PINCTRL_PULL_UP>;	/* PD21 periph A Data bit 15 */
++		    };
++                };
++
++		mmc1 {
++		    pinctrl_mmc1_slot0_clk_cmd_dat0: mmc1_slot0_clk_cmd_dat0-0 {
++			atmel,pins =
++			    <AT91_PIOA 13 AT91_PERIPH_B AT91_PINCTRL_NONE	/* PA13 periph B */
++			    AT91_PIOA 12 AT91_PERIPH_B AT91_PINCTRL_PULL_UP	/* PA12 periph B with pullup */
++			    AT91_PIOA 11 AT91_PERIPH_B AT91_PINCTRL_PULL_UP>;	/* PA11 periph B with pullup */
++		    };
++
++		    pinctrl_mmc1_slot0_dat1_3: mmc1_slot0_dat1_3-0 {
++			atmel,pins =
++			    <AT91_PIOA 2 AT91_PERIPH_B AT91_PINCTRL_PULL_UP	/* PA2 periph B with pullup */
++			    AT91_PIOA 3 AT91_PERIPH_B AT91_PINCTRL_PULL_UP	/* PA3 periph B with pullup */
++			    AT91_PIOA 4 AT91_PERIPH_B AT91_PINCTRL_PULL_UP>;	/* PA4 periph B with pullup */
++		    };
++		};
++            };
++
++	    rtc@fffffeb0 {
++		status = "okay";
++	    };
++
++	    i2c0: i2c@f8010000 {
++		compatible = "i2c-gpio";
++		status = "okay";
++
++		id_eeprom@56 {
++		    compatible = "atmel,24c04";
++		    reg = <0x56>;
++		    pagesize = <16>;
++		};
++		board_temp@48 {
++		    compatible = "ti,tmp102";
++		    reg = <0x48>;
++		    /* tempsensor_alert line running to pin PC19 on processor
++		       set up an interrupt for this? */
++		};
++	    };
++
++	    i2c1: i2c@f8014000 {
++		compatible = "i2c-gpio";
++		status = "okay";
++
++		ap1_eeprom@50 {
++		    compatible = "atmel,24c04";
++		    reg = <0x50>;
++		    pagesize = <16>;
++		};
++		ap2_eeprom@52 {
++		    compatible = "atmel,24c04";
++		    reg = <0x52>;
++		    pagesize = <16>;
++		};
++	    };
++
++	    /* runs to Accessory Port 1 */
++	    spi0: spi@f0000000 {
++		status = "okay";
++		cs-gpios = <&pioA 4 0>, <&pioA 2 0>, <&pioA 3 0>, <&pioA 5 0>;
++
++		ap1-adc@0 {
++		    compatible = "mts-io-ap1-adc";
++		    spi-max-frequency = <20000000>;
++		    reg = <0>;
++		};
++		ap1-dout@1 {
++		    compatible = "mts-io-ap1-dout";
++		    spi-max-frequency = <1000000>;
++		    reg = <1>;
++		};
++		ap1-spi@2 {
++			compatible = "spidev";
++		    spi-max-frequency = <2000000>;
++			reg = <2>;
++		};
++		ap1-din@3 {
++		    compatible = "mts-io-ap1-din";
++		    spi-max-frequency = <1000000>;
++		    reg = <3>;
++		};
++	    };
++
++	    /* runs to Accessory Port 2 */
++	    spi1: spi@f0004000 {
++		status = "okay";
++
++		cs-gpios = <&pioC 15 0>, <&pioC 16 0>, <&pioC 17 0>, <&pioC 18 0>;
++
++		ap2-adc@0 {
++		    compatible = "mts-io-ap2-adc";
++		    spi-max-frequency = <20000000>;
++		    reg = <0>;
++		};
++		ap2-dout@1 {
++		    compatible = "mts-io-ap2-dout";
++		    spi-max-frequency = <1000000>;
++		    reg = <1>;
++		};
++		ap2-spi@2 {
++			compatible = "spidev";
++		    spi-max-frequency = <2000000>;
++			reg = <2>;
++		};
++		ap2-din@3 {
++		    compatible = "mts-io-ap2-din";
++		    spi-max-frequency = <1000000>;
++		    reg = <3>;
++		};
++	    };
++        };
++
++	nand0: nand@40000000 {
++	    reg = < 0x40000000 0x10000000
++		    0xffffe000 0x600		/* PMECC Registers */
++		    0xffffe600 0x200		/* PMECC Error Location Registers */
++		    0x00100000 0x100000		/* PMECC looup table in ROM code  */
++		  >;
++	    atmel,pmecc-lookup-table-offset = <0x8000 0x10000>;
++	    gpios = <	&pioC 31 GPIO_ACTIVE_HIGH
++			&pioD 4 GPIO_ACTIVE_HIGH
++			0
++		    >;
++	    atmel,pmecc-cap = <4>;
++	    atmel,nand-has-dma;
++
++	    nand@0 {
++		label = "NANDFlash";
++		reg = <0x0 0x10000000>;
++	    };
++	    at91bootstrap@0 {
++		label = "at91bootstrap";
++		reg = <0x0 0x40000>;
++	    };
++	    uboot@40000 {
++		label = "u-Boot";
++		reg = <0x40000 0x80000>;
++	    };
++	    ubootconfig0@c0000 {
++		label = "u-Boot Config";
++		reg = <0xc0000 0xa0000>;
++	    };
++	    ubootconfig1@160000 {
++		label = "u-Boot Redundant Config";
++		reg = <0x160000 0xa0000>;
++	    };
++	    uImage@200000 {
++		label = "uImage";
++		reg = <0x200000 0x600000>;
++	    };
++	    config0@800000 {
++		label = "Config";
++		reg = <0x800000 0x800000>;
++	    };
++	    config1@1000000 {
++		label = "OEM Config";
++		reg = <0x1000000 0x800000>;
++	    };
++	    rootfs@1800000 {
++		label = "Rootfs";
++		reg = <0x1800000 0xe800000>;
++	    };
++	};
++    };
++
++	leds {
++		compatible = "gpio-leds";
++
++		pa24 {
++			label = "led-status";
++			gpios = <&pioA 24 GPIO_ACTIVE_LOW>;
++			linux,default-trigger = "default-on";
++		};
++		pa25 {
++			label = "led-a";
++			gpios = <&pioA 25 GPIO_ACTIVE_LOW>;
++		};
++		pa26 {
++			label = "led-b";
++			gpios = <&pioA 26 GPIO_ACTIVE_LOW>;
++		};
++		pa27 {
++			label = "led-c";
++			gpios = <&pioA 27 GPIO_ACTIVE_LOW>;
++		};
++		pa28 {
++			label = "led-d";
++			gpios = <&pioA 28 GPIO_ACTIVE_LOW>;
++		};
++	};
++
++	/* GPS-PPS input on AP1 */
++	pps {
++		compatible = "pps-gpio";
++		gpios = <&pioA 29 0>;
++		capture-clear;
++	};
++
++
++    i2c@0 {
++	status = "okay";
++
++	id_eeprom@56 {
++	    compatible = "atmel,24c04";
++	    reg = <0x56>;
++	    pagesize = <16>;
++	};
++	board_temp@48 {
++	    compatible = "ti,tmp102";
++	    reg = <0x48>;
++	    /* tempsensor_alert line running to pin PC19 on processor
++	       set up an interrupt for this? */
++	};
++    };
++    i2c@1 {
++	status = "okay";
++
++	ap1_eeprom@50 {
++	    compatible = "atmel,24c04";
++	    reg = <0x50>;
++	    pagesize = <16>;
++	};
++	ap2_eeprom@52 {
++	    compatible = "atmel,24c04";
++	    reg = <0x52>;
++	    pagesize = <16>;
++	};
++    };
++};
+Index: linux-3.12.27/arch/arm/boot/dts/at91sam9x5cm.dtsi
+===================================================================
+--- linux-3.12.27.orig/arch/arm/boot/dts/at91sam9x5cm.dtsi	2014-08-26 07:12:26.000000000 -0500
++++ linux-3.12.27/arch/arm/boot/dts/at91sam9x5cm.dtsi	2015-01-13 13:58:20.766078428 -0600
+@@ -40,48 +40,8 @@
+ 			atmel,has-pmecc;	/* Enable PMECC */
+ 			atmel,pmecc-cap = <2>;
+ 			atmel,pmecc-sector-size = <512>;
+-			nand-on-flash-bbt;
++			/* nand-on-flash-bbt; */
+ 			status = "okay";
+-
+-			at91bootstrap@0 {
+-				label = "at91bootstrap";
+-				reg = <0x0 0x40000>;
+-			};
+-
+-			uboot@40000 {
+-				label = "u-boot";
+-				reg = <0x40000 0x80000>;
+-			};
+-
+-			ubootenv@c0000 {
+-				label = "U-Boot Env";
+-				reg = <0xc0000 0x140000>;
+-			};
+-
+-			kernel@200000 {
+-				label = "kernel";
+-				reg = <0x200000 0x600000>;
+-			};
+-
+-			rootfs@800000 {
+-				label = "rootfs";
+-				reg = <0x800000 0x1f800000>;
+-			};
+-		};
+-	};
+-
+-	leds {
+-		compatible = "gpio-leds";
+-
+-		pb18 {
+-			label = "pb18";
+-			gpios = <&pioB 18 GPIO_ACTIVE_LOW>;
+-			linux,default-trigger = "heartbeat";
+-		};
+-
+-		pd21 {
+-			label = "pd21";
+-			gpios = <&pioD 21 GPIO_ACTIVE_HIGH>;
+ 		};
+ 	};
+ 
+@@ -93,5 +53,4 @@
+ 		pinctrl-0 = <&pinctrl_1wire_cm>;
+ 		status = "okay";
+ 	};
+-
+ };
+diff -aNru 4.9+gitAUTOINC+29796588eb.orig/arch/arm/boot/dts/at91sam9x5ek.dtsi 4.9+gitAUTOINC+29796588eb/arch/arm/boot/dts/at91sam9x5ek.dtsi
+--- 4.9+gitAUTOINC+29796588eb.orig/arch/arm/boot/dts/at91sam9x5ek.dtsi	2018-10-22 15:41:00.544625331 -0500
++++ 4.9+gitAUTOINC+29796588eb/arch/arm/boot/dts/at91sam9x5ek.dtsi	2018-10-23 09:28:17.902729520 -0500
+@@ -25,23 +25,11 @@
+ 					&pinctrl_mmc0_slot0_clk_cmd_dat0
+ 					&pinctrl_mmc0_slot0_dat1_3>;
+ 				status = "okay";
++                                /* external micro SD slot */
+ 				slot@0 {
+ 					reg = <0>;
+ 					bus-width = <4>;
+-					cd-gpios = <&pioD 15 GPIO_ACTIVE_HIGH>;
+-				};
+-			};
+-
+-			mmc1: mmc@f000c000 {
+-				pinctrl-0 = <
+-					&pinctrl_board_mmc1
+-					&pinctrl_mmc1_slot0_clk_cmd_dat0
+-					&pinctrl_mmc1_slot0_dat1_3>;
+-				status = "okay";
+-				slot@0 {
+-					reg = <0>;
+-					bus-width = <4>;
+-					cd-gpios = <&pioD 14 GPIO_ACTIVE_HIGH>;
++					cd-gpios = <&pioA 1 GPIO_ACTIVE_HIGH>;
+ 				};
+ 			};
+ 
+@@ -49,7 +37,7 @@
+ 				status = "okay";
+ 			};
+ 
+-			usart0: serial@f801c000 {
++			uart0: serial@f8040000 {
+ 				atmel,use-dma-rx;
+ 				atmel,use-dma-tx;
+ 				status = "okay";
+@@ -58,25 +46,12 @@
+ 			usb2: gadget@f803c000 {
+ 				pinctrl-names = "default";
+ 				pinctrl-0 = <&pinctrl_board_usb2>;
+-				atmel,vbus-gpio = <&pioB 16 GPIO_ACTIVE_HIGH>;
+-				status = "okay";
+-			};
+-
+-			i2c0: i2c@f8010000 {
+-				status = "okay";
+-
+-				wm8731: wm8731@1a {
+-					compatible = "wm8731";
+-					reg = <0x1a>;
+-				};
+-			};
+-
+-			adc0: adc@f804c000 {
+-				atmel,adc-ts-wires = <4>;
+-				atmel,adc-ts-pressure-threshold = <10000>;
++				/* atmel,vbus-gpio = <&pioB 16 GPIO_ACTIVE_HIGH>;		mtcdt: no vbus-gpio */
+ 				status = "okay";
+ 			};
+ 
++                        /* A/D convertor is unusable on Conduit */
++                        
+ 			pinctrl@fffff400 {
+ 				camera_sensor {
+ 					pinctrl_pck0_as_isi_mck: pck0_as_isi_mck-0 {
+@@ -118,7 +93,7 @@
+ 			};
+ 
+ 			spi0: spi@f0000000 {
+-				status = "disabled";	/* conflict with mmc1 */
++                                status = "okay";
+ 				cs-gpios = <&pioA 14 0>, <0>, <0>, <0>;
+ 				m25p80@0 {
+ 					compatible = "atmel,at25df321a";
+@@ -131,37 +106,20 @@
+ 				status = "okay";
+ 			};
+ 
+-			ssc0: ssc@f0010000 {
+-				status = "okay";
+-			};
+ 		};
+ 
+ 		usb0: ohci@00600000 {
+ 			status = "okay";
+ 			num-ports = <3>;
+-			atmel,vbus-gpio = <0 /* &pioD 18 GPIO_ACTIVE_LOW *//* Activate to have access to port A */
+-					   &pioD 19 GPIO_ACTIVE_LOW
+-					   &pioD 20 GPIO_ACTIVE_LOW
+-					  >;
++			//mtcdt: no vbus-gpio
++			// atmel,vbus-gpio = <0 /* &pioD 18 GPIO_ACTIVE_LOW *//* Activate to have access to port A */
++			//		   &pioD 19 GPIO_ACTIVE_LOW
++			//		   &pioD 20 GPIO_ACTIVE_LOW
++			//		  >;
+ 		};
+ 
+ 		usb1: ehci@00700000 {
+ 			status = "okay";
+ 		};
+ 	};
+-
+-	sound {
+-		compatible = "atmel,sam9x5-wm8731-audio";
+-
+-		atmel,model = "wm8731 @ AT91SAM9X5EK";
+-
+-		atmel,audio-routing =
+-			"Headphone Jack", "RHPOUT",
+-			"Headphone Jack", "LHPOUT",
+-			"LLINEIN", "Line In Jack",
+-			"RLINEIN", "Line In Jack";
+-
+-		atmel,ssc-controller = <&ssc0>;
+-		atmel,audio-codec = <&wm8731>;
+-	};
+ };
+diff -Naru 4.9+gitAUTOINC+29796588eb.orig/arch/arm/boot/dts/Makefile 4.9+gitAUTOINC+29796588eb/arch/arm/boot/dts/Makefile
+--- 4.9+gitAUTOINC+29796588eb.orig/arch/arm/boot/dts/Makefile	2018-10-23 09:55:41.330680867 -0500
++++ 4.9+gitAUTOINC+29796588eb/arch/arm/boot/dts/Makefile	2018-10-23 10:02:32.390668697 -0500
+@@ -43,7 +43,8 @@
+ 	at91sam9g25ek.dtb \
+ 	at91sam9g35ek.dtb \
+ 	at91sam9x25ek.dtb \
+-	at91sam9x35ek.dtb
++	at91sam9x35ek.dtb \
++	mtcdt.dtb
+ dtb-$(CONFIG_SOC_SAM_V7) += \
+ 	at91-kizbox2.dtb \
+ 	at91-sama5d2_ptc_ek.dtb \
diff --git a/recipes-kernel/linux/linux-at91_4.9.bb b/recipes-kernel/linux/linux-at91_4.9.bb
index 2ba9586..2709f1b 100644
--- a/recipes-kernel/linux/linux-at91_4.9.bb
+++ b/recipes-kernel/linux/linux-at91_4.9.bb
@@ -23,6 +23,18 @@ KBRANCH = "linux-4.9-at91"
 SRC_URI = "git://github.com/linux4sam/linux-at91.git;protocol=git;branch=${KBRANCH}"
 SRC_URI += "file://defconfig"
 
+COMMON_PATCHES = ""
+
+SRC_URI_append_mtcdt = "\
+            ${COMMON_PATCHES} \
+            file://defconfig \
+            file://linux-4.9-eeprom-setup-mtcdt.patch \
+            file://linux-4.9-mtcdt-device-tree.patch \
+            file://linux-4.9-add-num_accessory_ports-config-option.patch \
+            "
+
+DTB_APPEND_mtcdt = "mtcdt"
+
 python __anonymous () {
 	if d.getVar('UBOOT_FIT_IMAGE', True) == 'xyes':
 		d.appendVar('DEPENDS', ' u-boot-mkimage-native dtc-native')