SPEC-3723: restructure meta-agl-demo

All demo related components should be in here now.

We keep the packagegroups on purpose for now to stay backward-compatible.

v2: layer does pass yocto-check-layer, dependencies adapted
v3: remove the dynamic-layer setup, use all-in-one approach
v4: Fixed comments from Paul Barker. Tnx!
v5: Removed wayland/weston/agl-compositor additions, except for demo
    specific weston-init bbappend

Follow-up changes required later:
      - massaging packagegroups
      - scrub of recipes

Bug-AGL: SPEC-3723

Signed-off-by: Jan-Simon Moeller <jsmoeller@linuxfoundation.org>
Signed-off-by: Scott Murray <scott.murray@konsulko.com>
Change-Id: I47cefd8c23d46b2cdd063470e3f7d97d5ad952d8

11 files changed, 1384 insertions, 0 deletions

diff --git a/recipes-kernel/most/files/0002-src-most-add-auto-conf-feature.patch b/recipes-kernel/most/files/0002-src-most-add-auto-conf-feature.patch
new file mode 100644
index 000000000..dd811c81b
--- /dev/null
+++ b/recipes-kernel/most/files/0002-src-most-add-auto-conf-feature.patch
@@ -0,0 +1,472 @@
+From 9cb7cb85f59509ac445116e9458c502cf6cb74e6 Mon Sep 17 00:00:00 2001
+From: Christian Gromm <christian.gromm@microchip.com>
+Date: Thu, 9 Nov 2017 13:20:23 +0100
+Subject: [PATCH 2/2] src: most: add auto conf feature
+
+This patch adds the auto configuration feature to the driver
+sources. It is needed to have the driver configured automatically
+upon start up w/o the need for userspace to set up sysfs.
+
+Signed-off-by: Christian Gromm <christian.gromm@microchip.com>
+---
+ driver/Makefile           |   3 +
+ driver/default_conf.c     | 162 ++++++++++++++++++++++++++++++++++++++++++++++
+ driver/include/mostcore.h |  64 ++++++++++++++++++
+ driver/mostcore/core.c    | 120 ++++++++++++++++++++++++++++------
+ 4 files changed, 331 insertions(+), 18 deletions(-)
+ create mode 100644 driver/default_conf.c
+
+diff --git a/Makefile b/Makefile
+index e77a4b6..6d74ebe 100644
+--- a/Makefile
++++ b/Makefile
+@@ -6,6 +6,9 @@ obj-m := mostcore.o
+ mostcore-y := mostcore/core.o
+ CFLAGS_core.o := -I$(src)/include/
+ 
++obj-m += default_conf.o
++CFLAGL_default_conf.o := -I$(src)/include
++
+ obj-m += aim_cdev.o
+ aim_cdev-y := aim-cdev/cdev.o
+ CFLAGS_cdev.o := -I$(src)/include/
+diff --git a/default_conf.c b/default_conf.c
+new file mode 100644
+index 0000000..adb1786
+--- /dev/null
++++ b/default_conf.c
+@@ -0,0 +1,162 @@
++/*
++ * default_conf.c - Default configuration for the MOST channels.
++ *
++ * Copyright (C) 2017, Microchip Technology Germany II GmbH & Co. KG
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
++ * GNU General Public License for more details.
++ *
++ * This file is licensed under GPLv2.
++ */
++
++#include "include/mostcore.h"
++#include <linux/module.h>
++
++static struct most_config_probe config_probes[] = {
++
++	/* OS81118 Control */
++	{
++		.ch_name = "ep8f",
++		.cfg = {
++			.direction = MOST_CH_RX,
++			.data_type = MOST_CH_CONTROL,
++			.num_buffers = 16,
++			.buffer_size = 64,
++		},
++		.aim_name = "cdev",
++		.aim_param = "inic-usb-crx",
++	},
++	{
++		.ch_name = "ep0f",
++		.cfg = {
++			.direction = MOST_CH_TX,
++			.data_type = MOST_CH_CONTROL,
++			.num_buffers = 16,
++			.buffer_size = 64,
++		},
++		.aim_name = "cdev",
++		.aim_param = "inic-usb-ctx",
++	},
++	/* OS81118 Async */
++	{
++		.ch_name = "ep8e",
++		.cfg = {
++			.direction = MOST_CH_RX,
++			.data_type = MOST_CH_ASYNC,
++			.num_buffers = 20,
++			.buffer_size = 1522,
++		},
++		.aim_name = "networking",
++		.aim_param = "inic-usb-arx",
++	},
++	{
++		.ch_name = "ep0e",
++		.cfg = {
++			.direction = MOST_CH_TX,
++			.data_type = MOST_CH_ASYNC,
++			.num_buffers = 20,
++			.buffer_size = 1522,
++		},
++		.aim_name = "networking",
++		.aim_param = "inic-usb-atx",
++	},
++	/* OS81210 Control */
++	{
++		.ch_name = "ep87",
++		.cfg = {
++			.direction = MOST_CH_RX,
++			.data_type = MOST_CH_CONTROL,
++			.num_buffers = 16,
++			.buffer_size = 64,
++		},
++		.aim_name = "cdev",
++		.aim_param = "inic-usb-crx",
++	},
++	{
++		.ch_name = "ep07",
++		.cfg = {
++			.direction = MOST_CH_TX,
++			.data_type = MOST_CH_CONTROL,
++			.num_buffers = 16,
++			.buffer_size = 64,
++		},
++		.aim_name = "cdev",
++		.aim_param = "inic-usb-ctx",
++	},
++	/* OS81210 Async */
++	{
++		.ch_name = "ep86",
++		.cfg = {
++			.direction = MOST_CH_RX,
++			.data_type = MOST_CH_ASYNC,
++			.num_buffers = 20,
++			.buffer_size = 1522,
++		},
++		.aim_name = "networking",
++		.aim_param = "inic-usb-arx",
++	},
++	{
++		.ch_name = "ep06",
++		.cfg = {
++			.direction = MOST_CH_TX,
++			.data_type = MOST_CH_ASYNC,
++			.num_buffers = 20,
++			.buffer_size = 1522,
++		},
++		.aim_name = "networking",
++		.aim_param = "inic-usb-atx",
++	},
++	/* Streaming channels (common for all INICs) */
++	{
++		.ch_name = "ep01",
++		.cfg = {
++			.direction = MOST_CH_TX,
++			.data_type = MOST_CH_SYNC,
++			.num_buffers = 8,
++			.buffer_size = 2 * 12 * 42,
++			.subbuffer_size = 12,
++			.packets_per_xact = 42,
++		},
++		.aim_name = "sound",
++		.aim_param = "ep01-6ch.6x16",
++	},
++	{
++		.ch_name = "ep02",
++		.cfg = {
++			.direction = MOST_CH_TX,
++			.data_type = MOST_CH_ISOC,
++			.num_buffers = 8,
++			.buffer_size = 40 * 188,
++			.subbuffer_size = 188,
++			.packets_per_xact = 2,
++		},
++		.aim_name = "cdev",
++		.aim_param = "inic-usb-itx1",
++	},
++	
++	/* sentinel */
++	{}
++};
++
++static struct most_config_set config_set = {
++	.probes = config_probes
++};
++
++static int __init mod_init(void)
++{
++	most_register_config_set(&config_set);
++	return 0;
++}
++
++static void __exit mod_exit(void)
++{
++	most_deregister_config_set(&config_set);
++}
++
++module_init(mod_init);
++module_exit(mod_exit);
++MODULE_LICENSE("GPL");
++MODULE_AUTHOR("Andrey Shvetsov <andrey.shvetsov@k2l.de>");
++MODULE_DESCRIPTION("Default configuration for the MOST channels");
+diff --git a/include/mostcore.h b/include/mostcore.h
+index dc87121..3c00efb 100644
+--- a/include/mostcore.h
++++ b/include/mostcore.h
+@@ -145,6 +145,39 @@ struct most_channel_config {
+ 	u16 dbr_size;
+ };
+ 
++/**
++ * struct most_config_probe - matching rule, channel configuration and
++ *     the optional AIM name used for the automatic configuration and linking
++ *     of the channel
++ * @dev_name: optional matching device id
++ *     ("usb_device 1-1:1.0," "dim2-12345678", etc.)
++ * @ch_name: matching channel name ("ep8f", "ca2", etc.)
++ * @cfg: configuration that will be applied for the found channel
++ * @aim_name: optional name of the AIM that will be linked to the channel
++ *     ("cdev", "networking", "v4l", "sound")
++ * @aim_param: AIM dependent parameter (it is the character device name
++ *     for the cdev AIM, PCM format for the audio AIM, etc.)
++ */
++struct most_config_probe {
++	const char *dev_name;
++	const char *ch_name;
++	struct most_channel_config cfg;
++	const char *aim_name;
++	const char *aim_param;
++};
++
++/**
++ * struct most_config_set - the configuration set containing
++ *     several automatic configurations for the different channels
++ * @probes: list of the matching rules and the configurations,
++ *     that must be ended with the empty structure
++ * @list: list head used by the MostCore
++ */
++struct most_config_set {
++	const struct most_config_probe *probes;
++	struct list_head list;
++};
++
+ /*
+  * struct mbo - MOST Buffer Object.
+  * @context: context for core completion handler
+@@ -285,6 +318,37 @@ struct most_aim {
+ };
+ 
+ /**
++ * most_register_config_set - registers the configuration set
++ *
++ * @cfg_set: configuration set to be registered for the future probes
++ *
++ * The function registers the given configuration set.
++ *
++ * It is possible to register or deregister several configuration sets
++ * independently.  Different configuration sets may contain the
++ * overlapped matching rules but later registered configuration set has
++ * the higher priority over the prior registered set.
++ *
++ * The only the first matched configuration is applied for each
++ * channel.
++ *
++ * The configuration for the channel is applied at the time of
++ * registration of the parent most_interface.
++ */
++void most_register_config_set(struct most_config_set *cfg_set);
++
++/**
++ * most_deregister_config_set - deregisters the prior registered
++ *     configuration set
++ *
++ * @cfg_set: configuration set to be deregistered
++ *
++ * The calling of this function does not change the current
++ * configuration of the channels.
++ */
++void most_deregister_config_set(struct most_config_set *cfg_set);
++
++/**
+  * most_register_interface - Registers instance of the interface.
+  * @iface: Pointer to the interface instance description.
+  *
+diff --git a/mostcore/core.c b/mostcore/core.c
+index 9e0a352..6035cf0 100644
+--- a/mostcore/core.c
++++ b/mostcore/core.c
+@@ -36,6 +36,8 @@ static struct class *most_class;
+ static struct device *core_dev;
+ static struct ida mdev_id;
+ static int dummy_num_buffers;
++static struct list_head config_probes;
++struct mutex config_probes_mt; /* config_probes */
+ 
+ struct most_c_aim_obj {
+ 	struct most_aim *ptr;
+@@ -918,6 +920,30 @@ most_c_obj *get_channel_by_name(char *mdev, char *mdev_ch)
+ 	return c;
+ }
+ 
++static int link_channel_to_aim(struct most_c_obj *c, struct most_aim *aim,
++			       char *aim_param)
++{
++	int ret;
++	struct most_aim **aim_ptr;
++
++	if (!c->aim0.ptr)
++		aim_ptr = &c->aim0.ptr;
++	else if (!c->aim1.ptr)
++		aim_ptr = &c->aim1.ptr;
++	else
++		return -ENOSPC;
++
++	*aim_ptr = aim;
++	ret = aim->probe_channel(c->iface, c->channel_id,
++				 &c->cfg, &c->kobj, aim_param);
++	if (ret) {
++		*aim_ptr = NULL;
++		return ret;
++	}
++
++	return 0;
++}
++
+ /**
+  * add_link_store - store() function for add_link attribute
+  * @aim_obj: pointer to AIM object
+@@ -946,45 +972,33 @@ static ssize_t add_link_store(struct most_aim_obj *aim_obj,
+ 			      size_t len)
+ {
+ 	struct most_c_obj *c;
+-	struct most_aim **aim_ptr;
+ 	char buffer[STRING_SIZE];
+ 	char *mdev;
+ 	char *mdev_ch;
+-	char *mdev_devnod;
++	char *aim_param;
+ 	char devnod_buf[STRING_SIZE];
+ 	int ret;
+ 	size_t max_len = min_t(size_t, len + 1, STRING_SIZE);
+ 
+ 	strlcpy(buffer, buf, max_len);
+ 
+-	ret = split_string(buffer, &mdev, &mdev_ch, &mdev_devnod);
++	ret = split_string(buffer, &mdev, &mdev_ch, &aim_param);
+ 	if (ret)
+ 		return ret;
+ 
+-	if (!mdev_devnod || *mdev_devnod == 0) {
++	if (!aim_param || *aim_param == 0) {
+ 		snprintf(devnod_buf, sizeof(devnod_buf), "%s-%s", mdev,
+ 			 mdev_ch);
+-		mdev_devnod = devnod_buf;
++		aim_param = devnod_buf;
+ 	}
+ 
+ 	c = get_channel_by_name(mdev, mdev_ch);
+ 	if (IS_ERR(c))
+ 		return -ENODEV;
+ 
+-	if (!c->aim0.ptr)
+-		aim_ptr = &c->aim0.ptr;
+-	else if (!c->aim1.ptr)
+-		aim_ptr = &c->aim1.ptr;
+-	else
+-		return -ENOSPC;
+-
+-	*aim_ptr = aim_obj->driver;
+-	ret = aim_obj->driver->probe_channel(c->iface, c->channel_id,
+-					     &c->cfg, &c->kobj, mdev_devnod);
+-	if (ret) {
+-		*aim_ptr = NULL;
++	ret = link_channel_to_aim(c, aim_obj->driver, aim_param);
++	if (ret)
+ 		return ret;
+-	}
+ 
+ 	return len;
+ }
+@@ -1679,6 +1693,73 @@ int most_deregister_aim(struct most_aim *aim)
+ }
+ EXPORT_SYMBOL_GPL(most_deregister_aim);
+ 
++void most_register_config_set(struct most_config_set *cfg_set)
++{
++	mutex_lock(&config_probes_mt);
++	list_add(&cfg_set->list, &config_probes);
++	mutex_unlock(&config_probes_mt);
++}
++EXPORT_SYMBOL(most_register_config_set);
++
++void most_deregister_config_set(struct most_config_set *cfg_set)
++{
++	mutex_lock(&config_probes_mt);
++	list_del(&cfg_set->list);
++	mutex_unlock(&config_probes_mt);
++}
++EXPORT_SYMBOL(most_deregister_config_set);
++
++static int probe_aim(struct most_c_obj *c,
++		     const char *aim_name, const char *aim_param)
++{
++	struct most_aim_obj *aim_obj;
++	char buf[STRING_SIZE];
++
++	list_for_each_entry(aim_obj, &aim_list, list) {
++		if (!strcmp(aim_obj->driver->name, aim_name)) {
++			strlcpy(buf, aim_param ? aim_param : "", sizeof(buf));
++			return link_channel_to_aim(c, aim_obj->driver, buf);
++		}
++	}
++	return 0;
++}
++
++static bool probe_config_set(struct most_c_obj *c,
++			     const char *dev_name, const char *ch_name,
++			     const struct most_config_probe *p)
++{
++	int err;
++
++	for (; p->ch_name; p++) {
++		if ((p->dev_name && strcmp(dev_name, p->dev_name)) ||
++		    strcmp(ch_name, p->ch_name))
++			continue;
++
++		c->cfg = p->cfg;
++		if (p->aim_name) {
++			err = probe_aim(c, p->aim_name, p->aim_param);
++			if (err)
++				pr_err("failed to autolink %s to %s: %d\n",
++				       ch_name, p->aim_name, err);
++		}
++		return true;
++	}
++	return false;
++}
++
++static void find_configuration(struct most_c_obj *c, const char *dev_name,
++			       const char *ch_name)
++{
++	struct most_config_set *plist;
++
++	mutex_lock(&config_probes_mt);
++	list_for_each_entry(plist, &config_probes, list) {
++		if (probe_config_set(c, dev_name, ch_name, plist->probes))
++			break;
++	}
++	mutex_unlock(&config_probes_mt);
++}
++
+ /**
+  * most_register_interface - registers an interface with core
+  * @iface: pointer to the instance of the interface description.
+@@ -1777,6 +1858,7 @@ struct kobject *most_register_interface(struct most_interface *iface)
+ 		mutex_init(&c->start_mutex);
+ 		mutex_init(&c->nq_mutex);
+ 		list_add_tail(&c->list, &inst->channel_list);
++		find_configuration(c, iface->description, channel_name);
+ 	}
+ 	pr_info("registered new MOST device mdev%d (%s)\n",
+ 		inst->dev_id, iface->description);
+@@ -1880,6 +1962,8 @@ static int __init most_init(void)
+ 	pr_info("init()\n");
+ 	INIT_LIST_HEAD(&instance_list);
+ 	INIT_LIST_HEAD(&aim_list);
++	INIT_LIST_HEAD(&config_probes);
++	mutex_init(&config_probes_mt);
+ 	ida_init(&mdev_id);
+ 
+ 	err = bus_register(&most_bus);
+-- 
+2.7.4
+
diff --git a/recipes-kernel/most/files/0003-core-remove-kernel-log-for-MBO-status.patch b/recipes-kernel/most/files/0003-core-remove-kernel-log-for-MBO-status.patch
new file mode 100644
index 000000000..4703844a1
--- /dev/null
+++ b/recipes-kernel/most/files/0003-core-remove-kernel-log-for-MBO-status.patch
@@ -0,0 +1,26 @@
+From b269994be937cbb31c0d73ecc899ca8a545a6a4a Mon Sep 17 00:00:00 2001
+From: Christian Gromm <christian.gromm@microchip.com>
+Date: Mon, 4 Sep 2017 11:09:17 +0200
+Subject: [PATCH 3/5] core: remove kernel log for MBO status
+
+Signed-off-by: Christian Gromm <christian.gromm@microchip.com>
+---
+ driver/mostcore/core.c | 2 --
+ 1 file changed, 2 deletions(-)
+
+diff --git a/mostcore/core.c b/mostcore/core.c
+index 931efb9..595becc 100644
+--- a/mostcore/core.c
++++ b/mostcore/core.c
+@@ -1348,8 +1348,6 @@ static void most_write_completion(struct mbo *mbo)
+ 	BUG_ON((!mbo) || (!mbo->context));
+ 
+ 	c = mbo->context;
+-	if (mbo->status == MBO_E_INVAL)
+-		pr_info("WARN: Tx MBO status: invalid\n");
+ 	if (unlikely(c->is_poisoned || (mbo->status == MBO_E_CLOSE)))
+ 		trash_mbo(mbo);
+ 	else
+-- 
+2.7.4
+
diff --git a/recipes-kernel/most/files/0004-most-video-set-device_caps.patch b/recipes-kernel/most/files/0004-most-video-set-device_caps.patch
new file mode 100644
index 000000000..010d4b0d0
--- /dev/null
+++ b/recipes-kernel/most/files/0004-most-video-set-device_caps.patch
@@ -0,0 +1,25 @@
+From a5fd2ae8d4a3b2a8f7a33a4ea469ea7ee0d946ef Mon Sep 17 00:00:00 2001
+From: Christian Gromm <christian.gromm@microchip.com>
+Date: Mon, 4 Sep 2017 15:36:38 +0200
+Subject: [PATCH 4/5] most: video: set device_caps
+
+Signed-off-by: Christian Gromm <christian.gromm@microchip.com>
+---
+ driver/aim-v4l2/video.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/aim-v4l2/video.c b/aim-v4l2/video.c
+index e074841..6405a03 100644
+--- a/aim-v4l2/video.c
++++ b/aim-v4l2/video.c
+@@ -263,6 +263,7 @@ static int vidioc_querycap(struct file *file, void *priv,
+ 	snprintf(cap->bus_info, sizeof(cap->bus_info),
+ 		 "%s", mdev->iface->description);
+ 
++	cap->device_caps =
+ 	cap->capabilities =
+ 		V4L2_CAP_READWRITE |
+ 		V4L2_CAP_TUNER |
+-- 
+2.7.4
+
diff --git a/recipes-kernel/most/files/0005-most-video-set-V4L2_CAP_DEVICE_CAPS-flag.patch b/recipes-kernel/most/files/0005-most-video-set-V4L2_CAP_DEVICE_CAPS-flag.patch
new file mode 100644
index 000000000..ebaee9e14
--- /dev/null
+++ b/recipes-kernel/most/files/0005-most-video-set-V4L2_CAP_DEVICE_CAPS-flag.patch
@@ -0,0 +1,25 @@
+From 7518453386ad3e82008186a6c9ca86ed8c136801 Mon Sep 17 00:00:00 2001
+From: Christian Gromm <christian.gromm@microchip.com>
+Date: Mon, 4 Sep 2017 16:08:38 +0200
+Subject: [PATCH 5/5] most: video: set V4L2_CAP_DEVICE_CAPS flag
+
+Signed-off-by: Christian Gromm <christian.gromm@microchip.com>
+---
+ driver/aim-v4l2/video.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/aim-v4l2/video.c b/aim-v4l2/video.c
+index 6405a03..db75d4d 100644
+--- a/aim-v4l2/video.c
++++ b/aim-v4l2/video.c
+@@ -265,6 +265,7 @@ static int vidioc_querycap(struct file *file, void *priv,
+ 
+ 	cap->device_caps =
+ 	cap->capabilities =
++		V4L2_CAP_DEVICE_CAPS |
+ 		V4L2_CAP_READWRITE |
+ 		V4L2_CAP_TUNER |
+ 		V4L2_CAP_VIDEO_CAPTURE;
+-- 
+2.7.4
+
diff --git a/recipes-kernel/most/files/0006-dim2-fix-startup-sequence.patch b/recipes-kernel/most/files/0006-dim2-fix-startup-sequence.patch
new file mode 100644
index 000000000..59c6ae671
--- /dev/null
+++ b/recipes-kernel/most/files/0006-dim2-fix-startup-sequence.patch
@@ -0,0 +1,186 @@
+From 63bcd9b421ae7927948bffec9566db47f40ea290 Mon Sep 17 00:00:00 2001
+From: Andrey Shvetsov <andrey.shvetsov@k2l.de>
+Date: Tue, 30 Jan 2018 17:34:09 +0100
+Subject: [PATCH] staging: most: dim2: fix startup sequence
+
+Platform specific initializations (pdata->init) must be done before DIM2
+IP module startup (dim_startup).
+
+Signed-off-by: Andrey Shvetsov <andrey.shvetsov@k2l.de>
+---
+ hdm-dim2/dim2_hdm.c | 90 +++++++++++++++++++++++++++++++++++++++---------------------------------------------------
+ 1 file changed, 39 insertions(+), 51 deletions(-)
+
+diff --git a/hdm-dim2/dim2_hdm.c b/hdm-dim2/dim2_hdm.c
+index 893b8e4..e4629a5 100644
+--- a/hdm-dim2/dim2_hdm.c
++++ b/hdm-dim2/dim2_hdm.c
+@@ -155,38 +155,6 @@ void dimcb_on_error(u8 error_id, const char *error_message)
+ }
+
+ /**
+- * startup_dim - initialize the dim2 interface
+- * @pdev: platform device
+- */
+-static int startup_dim(struct platform_device *pdev)
+-{
+-	struct dim2_hdm *dev = platform_get_drvdata(pdev);
+-	struct dim2_platform_data *pdata = pdev->dev.platform_data;
+-	u8 hal_ret;
+-	int ret;
+-
+-	if (!pdata) {
+-		pr_err("missing platform data\n");
+-		return -EINVAL;
+-	}
+-
+-	ret = pdata->init ? pdata->init(pdata, dev->io_base) : 0;
+-	if (ret)
+-		return ret;
+-
+-	pr_info("sync: num of frames per sub-buffer: %u\n", fcnt);
+-	hal_ret = dim_startup(dev->io_base, pdata->clk_speed, fcnt);
+-	if (hal_ret != DIM_NO_ERROR) {
+-		pr_err("dim_startup failed: %d\n", hal_ret);
+-		if (pdata && pdata->destroy)
+-			pdata->destroy(pdata);
+-		return -ENODEV;
+-	}
+-
+-	return 0;
+-}
+-
+-/**
+  * try_start_dim_transfer - try to transfer a buffer on a channel
+  * @hdm_ch: channel specific data
+  *
+@@ -727,10 +695,12 @@ static void dma_free(struct mbo *mbo, u32 size)
+  */
+ static int dim2_probe(struct platform_device *pdev)
+ {
++	struct dim2_platform_data *pdata = pdev->dev.platform_data;
+	struct dim2_hdm *dev;
+	struct resource *res;
+	int ret, i;
+	struct kobject *kobj;
++	u8 hal_ret;
+	int irq;
+
+	dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL);
+@@ -745,38 +715,59 @@ static int dim2_probe(struct platform_device *pdev)
+	if (IS_ERR(dev->io_base))
+		return PTR_ERR(dev->io_base);
+
++	if (!pdata) {
++		dev_err(&pdev->dev, "missing platform data\n");
++		return -EINVAL;
++	}
++
++	ret = pdata->init ? pdata->init(pdata, dev->io_base) : 0;
++	if (ret)
++		return ret;
++
++	dev_info(&pdev->dev, "sync: num of frames per sub-buffer: %u\n", fcnt);
++	hal_ret = dim_startup(dev->io_base, pdata->clk_speed, fcnt);
++	if (hal_ret != DIM_NO_ERROR) {
++		dev_err(&pdev->dev, "dim_startup failed: %d\n", hal_ret);
++		ret = -ENODEV;
++		goto err_bsp_destroy;
++	}
++
+	irq = platform_get_irq(pdev, 0);
+	if (irq < 0) {
+		dev_err(&pdev->dev, "failed to get ahb0_int irq: %d\n", irq);
+-		return irq;
++		ret = irq;
++		goto err_shutdown_dim;
+	}
+
+	ret = devm_request_irq(&pdev->dev, irq, dim2_ahb_isr, 0,
+			       "dim2_ahb0_int", dev);
+	if (ret) {
+		dev_err(&pdev->dev, "failed to request ahb0_int irq %d\n", irq);
+-		return ret;
++		goto err_shutdown_dim;
+	}
+
+	irq = platform_get_irq(pdev, 1);
+	if (irq < 0) {
+		dev_err(&pdev->dev, "failed to get mlb_int irq: %d\n", irq);
+-		return irq;
++		ret = irq;
++		goto err_shutdown_dim;
+	}
+
+	ret = devm_request_irq(&pdev->dev, irq, dim2_mlb_isr, 0,
+			       "dim2_mlb_int", dev);
+	if (ret) {
+		dev_err(&pdev->dev, "failed to request mlb_int irq %d\n", irq);
+-		return ret;
++		goto err_shutdown_dim;
+	}
+
+	init_waitqueue_head(&dev->netinfo_waitq);
+	dev->deliver_netinfo = 0;
+-	dev->netinfo_task = kthread_run(&deliver_netinfo_thread, (void *)dev,
++	dev->netinfo_task = kthread_run(&deliver_netinfo_thread, dev,
+					"dim2_netinfo");
+-	if (IS_ERR(dev->netinfo_task))
+-		return PTR_ERR(dev->netinfo_task);
++	if (IS_ERR(dev->netinfo_task)) {
++		ret = PTR_ERR(dev->netinfo_task);
++		goto err_shutdown_dim;
++	}
+
+	for (i = 0; i < DMA_CHANNELS; i++) {
+		struct most_channel_capability *cap = dev->capabilities + i;
+@@ -833,20 +824,17 @@ static int dim2_probe(struct platform_device *pdev)
+	if (ret)
+		goto err_unreg_iface;
+
+-	ret = startup_dim(pdev);
+-	if (ret) {
+-		dev_err(&pdev->dev, "failed to initialize DIM2\n");
+-		goto err_destroy_bus;
+-	}
+-
+	return 0;
+
+-err_destroy_bus:
+-	dim2_sysfs_destroy(&dev->bus);
+ err_unreg_iface:
+	most_deregister_interface(&dev->most_iface);
+ err_stop_thread:
+	kthread_stop(dev->netinfo_task);
++err_shutdown_dim:
++	dim_shutdown();
++err_bsp_destroy:
++	if (pdata && pdata->destroy)
++		pdata->destroy(pdata);
+
+	return ret;
+ }
+@@ -863,6 +851,10 @@ static int dim2_remove(struct platform_device *pdev)
+	struct dim2_platform_data *pdata = pdev->dev.platform_data;
+	unsigned long flags;
+
++	dim2_sysfs_destroy(&dev->bus);
++	most_deregister_interface(&dev->most_iface);
++	kthread_stop(dev->netinfo_task);
++
+	spin_lock_irqsave(&dim_lock, flags);
+	dim_shutdown();
+	spin_unlock_irqrestore(&dim_lock, flags);
+@@ -870,10 +862,6 @@ static int dim2_remove(struct platform_device *pdev)
+	if (pdata && pdata->destroy)
+		pdata->destroy(pdata);
+
+-	dim2_sysfs_destroy(&dev->bus);
+-	most_deregister_interface(&dev->most_iface);
+-	kthread_stop(dev->netinfo_task);
+-
+	/*
+	 * break link to local platform_device_id struct
+	 * to prevent crash by unload platform device module
+--
+libgit2 0.26.0
diff --git a/recipes-kernel/most/files/0007-dim2-use-device-tree.patch b/recipes-kernel/most/files/0007-dim2-use-device-tree.patch
new file mode 100644
index 000000000..679fab79c
--- /dev/null
+++ b/recipes-kernel/most/files/0007-dim2-use-device-tree.patch
@@ -0,0 +1,378 @@
+From 8e16207392cd715ea88f6780981a3d55ab005588 Mon Sep 17 00:00:00 2001
+From: Andrey Shvetsov <andrey.shvetsov@k2l.de>
+Date: Mon, 12 Feb 2018 12:23:37 +0100
+Subject: [PATCH] staging: most: dim2: use device tree
+
+Current dim2 driver expects the existence of a platform driver that
+implements the platform specific initialization and delivery of the irq
+numbers.
+
+This patch integrates the device tree activity and platform specific
+code into the driver.
+
+Signed-off-by: Andrey Shvetsov <andrey.shvetsov@k2l.de>
+---
+ hdm-dim2/dim2_hdm.c                 | 222 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-----------------------------
+ hdm-dim2/dim2_hdm.h                 |  28 ----------------------------
+ hdm-dim2/platform/dim2_arwen_mlb3.c | 165 ---------------------------------------------------------------------------------------------------------------------------------------------------------------------
+ hdm-dim2/platform/dim2_arwen_mlb6.c | 169 -------------------------------------------------------------------------------------------------------------------------------------------------------------------------
+ hdm-dim2/platform/dim2_h2_dt.c      | 227 -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
+ hdm-dim2/platform/dim2_mx6q.c       | 192 ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
+ hdm-dim2/platform/dim2_mx6q_dt.c    | 224 --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
+ 7 files changed, 193 insertions(+), 1034 deletions(-)
+ delete mode 100644 hdm-dim2/dim2_hdm.h
+ delete mode 100644 hdm-dim2/platform/dim2_arwen_mlb3.c
+ delete mode 100644 hdm-dim2/platform/dim2_arwen_mlb6.c
+ delete mode 100644 hdm-dim2/platform/dim2_h2_dt.c
+ delete mode 100644 hdm-dim2/platform/dim2_mx6q.c
+ delete mode 100644 hdm-dim2/platform/dim2_mx6q_dt.c
+
+diff --git a/hdm-dim2/dim2_hdm.c b/hdm-dim2/dim2_hdm.c
+index e4629a5..2dba917 100644
+--- a/hdm-dim2/dim2_hdm.c
++++ b/hdm-dim2/dim2_hdm.c
+@@ -14,6 +14,7 @@
+ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+ #include <linux/module.h>
++#include <linux/of_platform.h>
+ #include <linux/printk.h>
+ #include <linux/kernel.h>
+ #include <linux/init.h>
+@@ -21,13 +22,13 @@
+ #include <linux/interrupt.h>
+ #include <linux/slab.h>
+ #include <linux/io.h>
++#include <linux/clk.h>
+ #include <linux/dma-mapping.h>
+ #include <linux/sched.h>
+ #include <linux/kthread.h>
+
+ #include <mostcore.h>
+ #include "dim2_hal.h"
+-#include "dim2_hdm.h"
+ #include "dim2_errors.h"
+ #include "dim2_sysfs.h"
+
+@@ -93,6 +94,9 @@ struct dim2_hdm {
+	struct most_interface most_iface;
+	char name[16 + sizeof "dim2-"];
+	void __iomem *io_base;
++	u8 clk_speed;
++	struct clk *clk;
++	struct clk *clk_pll;
+	struct task_struct *netinfo_task;
+	wait_queue_head_t netinfo_waitq;
+	int deliver_netinfo;
+@@ -102,6 +106,12 @@ struct dim2_hdm {
+	struct medialb_bus bus;
+	void (*on_netinfo)(struct most_interface *,
+			   unsigned char, unsigned char *);
++	void (*disable_platform)(struct platform_device *);
++};
++
++struct dim2_platform_data {
++	int (*enable)(struct platform_device *);
++	void (*disable)(struct platform_device *);
+ };
+
+ #define iface_to_hdm(iface) container_of(iface, struct dim2_hdm, most_iface)
+@@ -686,6 +696,8 @@ static void dma_free(struct mbo *mbo, u32 size)
+	dma_free_coherent(NULL, size, mbo->virt_address, mbo->bus_address);
+ }
+
++static const struct of_device_id dim2_of_match[];
++
+ /*
+  * dim2_probe - dim2 probe handler
+  * @pdev: platform device structure
+@@ -695,7 +707,7 @@ static void dma_free(struct mbo *mbo, u32 size)
+  */
+ static int dim2_probe(struct platform_device *pdev)
+ {
+-	struct dim2_platform_data *pdata = pdev->dev.platform_data;
++	const struct dim2_platform_data *pdata;
+	struct dim2_hdm *dev;
+	struct resource *res;
+	int ret, i;
+@@ -703,6 +715,8 @@ static int dim2_probe(struct platform_device *pdev)
+	u8 hal_ret;
+	int irq;
+
++	enum { MLB_INT_IDX, AHB0_INT_IDX };
++
+	dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL);
+	if (!dev)
+		return -ENOMEM;
+@@ -710,29 +724,30 @@ static int dim2_probe(struct platform_device *pdev)
+	dev->atx_idx = -1;
+
+	platform_set_drvdata(pdev, dev);
++
++	dev->clk_speed = CLK_4096FS;
++
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	dev->io_base = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(dev->io_base))
+		return PTR_ERR(dev->io_base);
+
+-	if (!pdata) {
+-		dev_err(&pdev->dev, "missing platform data\n");
+-		return -EINVAL;
+-	}
+-
+-	ret = pdata->init ? pdata->init(pdata, dev->io_base) : 0;
++	pdata = of_match_node(dim2_of_match, pdev->dev.of_node)->data;
++	ret = pdata && pdata->enable ? pdata->enable(pdev) : 0;
+	if (ret)
+		return ret;
+
++	dev->disable_platform = pdata ? pdata->disable : 0;
++
+	dev_info(&pdev->dev, "sync: num of frames per sub-buffer: %u\n", fcnt);
+-	hal_ret = dim_startup(dev->io_base, pdata->clk_speed, fcnt);
++	hal_ret = dim_startup(dev->io_base, dev->clk_speed, fcnt);
+	if (hal_ret != DIM_NO_ERROR) {
+		dev_err(&pdev->dev, "dim_startup failed: %d\n", hal_ret);
+		ret = -ENODEV;
+-		goto err_bsp_destroy;
++		goto err_disable_platform;
+	}
+
+-	irq = platform_get_irq(pdev, 0);
++	irq = platform_get_irq(pdev, AHB0_INT_IDX);
+	if (irq < 0) {
+		dev_err(&pdev->dev, "failed to get ahb0_int irq: %d\n", irq);
+		ret = irq;
+@@ -746,7 +761,7 @@ static int dim2_probe(struct platform_device *pdev)
+		goto err_shutdown_dim;
+	}
+
+-	irq = platform_get_irq(pdev, 1);
++	irq = platform_get_irq(pdev, MLB_INT_IDX);
+	if (irq < 0) {
+		dev_err(&pdev->dev, "failed to get mlb_int irq: %d\n", irq);
+		ret = irq;
+@@ -832,9 +847,9 @@ static int dim2_probe(struct platform_device *pdev)
+	kthread_stop(dev->netinfo_task);
+ err_shutdown_dim:
+	dim_shutdown();
+-err_bsp_destroy:
+-	if (pdata && pdata->destroy)
+-		pdata->destroy(pdata);
++err_disable_platform:
++	if (dev->disable_platform)
++		dev->disable_platform(pdev);
+
+	return ret;
+ }
+@@ -848,7 +863,6 @@ static int dim2_probe(struct platform_device *pdev)
+ static int dim2_remove(struct platform_device *pdev)
+ {
+	struct dim2_hdm *dev = platform_get_drvdata(pdev);
+-	struct dim2_platform_data *pdata = pdev->dev.platform_data;
+	unsigned long flags;
+
+	dim2_sysfs_destroy(&dev->bus);
+@@ -859,37 +873,187 @@ static int dim2_remove(struct platform_device *pdev)
+	dim_shutdown();
+	spin_unlock_irqrestore(&dim_lock, flags);
+
+-	if (pdata && pdata->destroy)
+-		pdata->destroy(pdata);
++	if (dev->disable_platform)
++		dev->disable_platform(pdev);
++
++	return 0;
++}
++
++/* platform specific functions [[ */
++
++static int fsl_mx6_enable(struct platform_device *pdev)
++{
++	struct dim2_hdm *dev = platform_get_drvdata(pdev);
++	int ret;
++
++	dev->clk = devm_clk_get(&pdev->dev, "mlb");
++	if (IS_ERR_OR_NULL(dev->clk)) {
++		dev_err(&pdev->dev, "unable to get mlb clock\n");
++		return -EFAULT;
++	}
++
++	ret = clk_prepare_enable(dev->clk);
++	if (ret) {
++		dev_err(&pdev->dev, "%s\n", "clk_prepare_enable failed");
++		return ret;
++	}
++
++	if (dev->clk_speed >= CLK_2048FS) {
++		/* enable pll */
++		dev->clk_pll = devm_clk_get(&pdev->dev, "pll8_mlb");
++		if (IS_ERR_OR_NULL(dev->clk_pll)) {
++			dev_err(&pdev->dev, "unable to get mlb pll clock\n");
++			clk_disable_unprepare(dev->clk);
++			return -EFAULT;
++		}
++
++		writel(0x888, dev->io_base + 0x38);
++		clk_prepare_enable(dev->clk_pll);
++	}
++
++	return 0;
++}
++
++static void fsl_mx6_disable(struct platform_device *pdev)
++{
++	struct dim2_hdm *dev = platform_get_drvdata(pdev);
++
++	if (dev->clk_speed >= CLK_2048FS)
++		clk_disable_unprepare(dev->clk_pll);
++
++	clk_disable_unprepare(dev->clk);
++}
++
++static int rcar_h2_enable(struct platform_device *pdev)
++{
++	struct dim2_hdm *dev = platform_get_drvdata(pdev);
++	int ret;
++
++	dev->clk = devm_clk_get(&pdev->dev, NULL);
++	if (IS_ERR(dev->clk)) {
++		dev_err(&pdev->dev, "cannot get clock\n");
++		return PTR_ERR(dev->clk);
++	}
++
++	ret = clk_prepare_enable(dev->clk);
++	if (ret) {
++		dev_err(&pdev->dev, "%s\n", "clk_prepare_enable failed");
++		return ret;
++	}
++
++	if (dev->clk_speed >= CLK_2048FS) {
++		/* enable MLP pll and LVDS drivers */
++		writel(0x03, dev->io_base + 0x600);
++		/* set bias */
++		writel(0x888, dev->io_base + 0x38);
++	} else {
++		/* PLL */
++		writel(0x04, dev->io_base + 0x600);
++	}
++
+
+-	/*
+-	 * break link to local platform_device_id struct
+-	 * to prevent crash by unload platform device module
+-	 */
+-	pdev->id_entry = NULL;
++	/* BBCR = 0b11 */
++	writel(0x03, dev->io_base + 0x500);
++	writel(0x0002FF02, dev->io_base + 0x508);
+
+	return 0;
+ }
+
+-static const struct platform_device_id dim2_id[] = {
+-	{ "medialb_dim2" },
+-	{ }, /* Terminating entry */
++static void rcar_h2_disable(struct platform_device *pdev)
++{
++	struct dim2_hdm *dev = platform_get_drvdata(pdev);
++
++	clk_disable_unprepare(dev->clk);
++
++	/* disable PLLs and LVDS drivers */
++	writel(0x0, dev->io_base + 0x600);
++}
++
++static int rcar_m3_enable(struct platform_device *pdev)
++{
++	struct dim2_hdm *dev = platform_get_drvdata(pdev);
++	u32 enable_512fs = dev->clk_speed == CLK_512FS;
++	int ret;
++
++	dev->clk = devm_clk_get(&pdev->dev, NULL);
++	if (IS_ERR(dev->clk)) {
++		dev_err(&pdev->dev, "cannot get clock\n");
++		return PTR_ERR(dev->clk);
++	}
++
++	ret = clk_prepare_enable(dev->clk);
++	if (ret) {
++		dev_err(&pdev->dev, "%s\n", "clk_prepare_enable failed");
++		return ret;
++	}
++
++	/* PLL */
++	writel(0x04, dev->io_base + 0x600);
++
++	writel(enable_512fs, dev->io_base + 0x604);
++
++	/* BBCR = 0b11 */
++	writel(0x03, dev->io_base + 0x500);
++	writel(0x0002FF02, dev->io_base + 0x508);
++
++	return 0;
++}
++
++static void rcar_m3_disable(struct platform_device *pdev)
++{
++	struct dim2_hdm *dev = platform_get_drvdata(pdev);
++
++	clk_disable_unprepare(dev->clk);
++
++	/* disable PLLs and LVDS drivers */
++	writel(0x0, dev->io_base + 0x600);
++}
++
++/* ]] platform specific functions */
++
++enum dim2_platforms { FSL_MX6, RCAR_H2, RCAR_M3 };
++
++static struct dim2_platform_data plat_data[] = {
++	[FSL_MX6] = { .enable = fsl_mx6_enable, .disable = fsl_mx6_disable },
++	[RCAR_H2] = { .enable = rcar_h2_enable, .disable = rcar_h2_disable },
++	[RCAR_M3] = { .enable = rcar_m3_enable, .disable = rcar_m3_disable },
++};
++
++static const struct of_device_id dim2_of_match[] = {
++	{
++		.compatible = "fsl,imx6q-mlb150",
++		.data = plat_data + FSL_MX6
++	},
++	{
++		.compatible = "renesas,mlp",
++		.data = plat_data + RCAR_H2
++	},
++	{
++		.compatible = "rcar,medialb-dim2",
++		.data = plat_data + RCAR_M3
++	},
++	{
++		.compatible = "xlnx,axi4-os62420_3pin-1.00.a",
++	},
++	{
++		.compatible = "xlnx,axi4-os62420_6pin-1.00.a",
++	},
++	{},
+ };
+
+-MODULE_DEVICE_TABLE(platform, dim2_id);
++MODULE_DEVICE_TABLE(of, dim2_of_match);
+
+ static struct platform_driver dim2_driver = {
+	.probe = dim2_probe,
+	.remove = dim2_remove,
+-	.id_table = dim2_id,
+	.driver = {
+		.name = "hdm_dim2",
++		.of_match_table = dim2_of_match,
+	},
+ };
+
+ module_platform_driver(dim2_driver);
+
+-MODULE_AUTHOR("Jain Roy Ambi <JainRoy.Ambi@microchip.com>");
+ MODULE_AUTHOR("Andrey Shvetsov <andrey.shvetsov@k2l.de>");
+ MODULE_DESCRIPTION("MediaLB DIM2 Hardware Dependent Module");
+ MODULE_LICENSE("GPL");
+libgit2 0.26.0
diff --git a/recipes-kernel/most/files/0008-dim2-read-clock-speed-from-the-device-tree.patch b/recipes-kernel/most/files/0008-dim2-read-clock-speed-from-the-device-tree.patch
new file mode 100644
index 000000000..1b01fb156
--- /dev/null
+++ b/recipes-kernel/most/files/0008-dim2-read-clock-speed-from-the-device-tree.patch
@@ -0,0 +1,92 @@
+From 839ad403a2d8081a6c15f6fc2836b01919338f3c Mon Sep 17 00:00:00 2001
+From: Andrey Shvetsov <andrey.shvetsov@k2l.de>
+Date: Mon, 12 Feb 2018 12:24:37 +0100
+Subject: [PATCH] staging: most: dim2: read clock speed from the device tree
+
+This implements reading of the clock speed parameter from the device
+tree.
+
+Signed-off-by: Andrey Shvetsov <andrey.shvetsov@k2l.de>
+---
+ Documentation/devicetree/bindings/inic/microchip,inic-dim2.txt | 64 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+ hdm-dim2/dim2_hdm.c                       | 50 +++++++++++++++++++++++++++++++++++++++++++++++++-
+ 2 files changed, 113 insertions(+), 1 deletion(-)
+ create mode 100644 Documentation/devicetree/bindings/inic/microchip,inic-dim2.txt
+
+diff --git a/hdm-dim2/dim2_hdm.c b/hdm-dim2/dim2_hdm.c
+index 2dba917..05e1896 100644
+--- a/hdm-dim2/dim2_hdm.c
++++ b/hdm-dim2/dim2_hdm.c
+@@ -698,6 +698,42 @@ static void dma_free(struct mbo *mbo, u32 size)
+
+ static const struct of_device_id dim2_of_match[];
+
++static struct {
++	const char *clock_speed;
++	u8 clk_speed;
++} clk_mt[] = {
++	{ "256fs", CLK_256FS },
++	{ "512fs", CLK_512FS },
++	{ "1024fs", CLK_1024FS },
++	{ "2048fs", CLK_2048FS },
++	{ "3072fs", CLK_3072FS },
++	{ "4096fs", CLK_4096FS },
++	{ "6144fs", CLK_6144FS },
++	{ "8192fs", CLK_8192FS },
++};
++
++/**
++ * get_dim2_clk_speed - converts string to DIM2 clock speed value
++ *
++ * @clock_speed: string in the format "{NUMBER}fs"
++ * @val: pointer to get one of the CLK_{NUMBER}FS values
++ *
++ * By success stores one of the CLK_{NUMBER}FS in the *val and returns 0,
++ * otherwise returns -EINVAL.
++ */
++static int get_dim2_clk_speed(const char *clock_speed, u8 *val)
++{
++	int i;
++
++	for (i = 0; i < ARRAY_SIZE(clk_mt); i++) {
++		if (!strcmp(clock_speed, clk_mt[i].clock_speed)) {
++			*val = clk_mt[i].clk_speed;
++			return 0;
++		}
++	}
++	return -EINVAL;
++}
++
+ /*
+  * dim2_probe - dim2 probe handler
+  * @pdev: platform device structure
+@@ -708,6 +744,7 @@ static const struct of_device_id dim2_of_match[];
+ static int dim2_probe(struct platform_device *pdev)
+ {
+	const struct dim2_platform_data *pdata;
++	const char *clock_speed;
+	struct dim2_hdm *dev;
+	struct resource *res;
+	int ret, i;
+@@ -725,7 +762,18 @@ static int dim2_probe(struct platform_device *pdev)
+
+	platform_set_drvdata(pdev, dev);
+
+-	dev->clk_speed = CLK_4096FS;
++	ret = of_property_read_string(pdev->dev.of_node,
++				      "microchip,clock-speed", &clock_speed);
++	if (ret) {
++		dev_err(&pdev->dev, "missing dt property clock-speed\n");
++		return ret;
++	}
++
++	ret = get_dim2_clk_speed(clock_speed, &dev->clk_speed);
++	if (ret) {
++		dev_err(&pdev->dev, "bad dt property clock-speed\n");
++		return ret;
++	}
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	dev->io_base = devm_ioremap_resource(&pdev->dev, res);
+--
+libgit2 0.26.0
diff --git a/recipes-kernel/most/files/0009-dim2-use-device-for-coherent-memory-allocation.patch b/recipes-kernel/most/files/0009-dim2-use-device-for-coherent-memory-allocation.patch
new file mode 100644
index 000000000..08cd6f99d
--- /dev/null
+++ b/recipes-kernel/most/files/0009-dim2-use-device-for-coherent-memory-allocation.patch
@@ -0,0 +1,47 @@
+From 756f2f1f90524c2620ed7951e436d13bdb929a6b Mon Sep 17 00:00:00 2001
+From: Andrey Shvetsov <andrey.shvetsov@k2l.de>
+Date: Mon, 12 Feb 2018 12:25:37 +0100
+Subject: [PATCH] staging: most: dim2: use device for coherent memory allocation
+
+On several modern architectures the allocation of coherent memory needs
+a device that has the dma_ops properly set.  This patch enables use of
+the DIM2 platform device for the allocation process.
+
+Signed-off-by: Andrey Shvetsov <andrey.shvetsov@k2l.de>
+---
+ hdm-dim2/dim2_hdm.c |  9 +++++++--
+ 1 file changed, 7 insertions(+), 2 deletions(-)
+
+diff --git a/hdm-dim2/dim2_hdm.c b/hdm-dim2/dim2_hdm.c
+index 05e1896..1847091 100644
+--- a/hdm-dim2/dim2_hdm.c
++++ b/hdm-dim2/dim2_hdm.c
+@@ -688,12 +688,16 @@ static int poison_channel(struct most_interface *most_iface, int ch_idx)
+
+ static void *dma_alloc(struct mbo *mbo, u32 size)
+ {
+-	return dma_alloc_coherent(NULL, size, &mbo->bus_address, GFP_KERNEL);
++	struct device *dev = mbo->ifp->dev;
++
++	return dma_alloc_coherent(dev, size, &mbo->bus_address, GFP_KERNEL);
+ }
+
+ static void dma_free(struct mbo *mbo, u32 size)
+ {
+-	dma_free_coherent(NULL, size, mbo->virt_address, mbo->bus_address);
++	struct device *dev = mbo->ifp->dev;
++
++	dma_free_coherent(dev, size, mbo->virt_address, mbo->bus_address);
+ }
+
+ static const struct of_device_id dim2_of_match[];
+@@ -875,6 +879,7 @@ static int dim2_probe(struct platform_device *pdev)
+	dev->most_iface.poison_channel = poison_channel;
+	dev->most_iface.request_netinfo = request_netinfo;
+	dev->most_iface.extra_attrs = DBR_ATTRS;
++	dev->most_iface.dev = &pdev->dev;
+
+	kobj = most_register_interface(&dev->most_iface);
+	if (IS_ERR(kobj)) {
+--
+libgit2 0.26.0
diff --git a/recipes-kernel/most/files/0010-backport-usb-setup-timer.patch b/recipes-kernel/most/files/0010-backport-usb-setup-timer.patch
new file mode 100644
index 000000000..ff21b2130
--- /dev/null
+++ b/recipes-kernel/most/files/0010-backport-usb-setup-timer.patch
@@ -0,0 +1,35 @@
+From 8eaec876f732c7e4b238ada5f9304c6da2380eb1 Mon Sep 17 00:00:00 2001
+From: Andrey Shvetsov <andrey.shvetsov@k2l.de>
+Date: Fri, 8 Feb 2019 22:44:32 +0000
+Subject: [PATCH] backport: usb: setup_timer
+
+---
+ driver/hdm-usb/hdm_usb.c | 7 +++----
+ 1 file changed, 3 insertions(+), 4 deletions(-)
+
+diff --git a/hdm-usb/hdm_usb.c b/hdm-usb/hdm_usb.c
+index 5b0af88..9896835 100644
+--- a/hdm-usb/hdm_usb.c
++++ b/hdm-usb/hdm_usb.c
+@@ -760,9 +760,9 @@ static void hdm_request_netinfo(struct most_interface *iface, int channel,
+  * The handler runs in interrupt context. That's why we need to defer the
+  * tasks to a work queue.
+  */
+-static void link_stat_timer_handler(unsigned long data)
++static void link_stat_timer_handler(struct timer_list *t)
+ {
+-	struct most_dev *mdev = (struct most_dev *)data;
++	struct most_dev *mdev = from_timer(mdev, t, link_stat_timer);
+ 
+ 	schedule_work(&mdev->poll_work_obj);
+ 	mdev->link_stat_timer.expires = jiffies + (2 * HZ);
+@@ -1154,8 +1154,7 @@ hdm_probe(struct usb_interface *interface, const struct usb_device_id *id)
+ 	num_endpoints = usb_iface_desc->desc.bNumEndpoints;
+ 	mutex_init(&mdev->io_mutex);
+ 	INIT_WORK(&mdev->poll_work_obj, wq_netinfo);
+-	setup_timer(&mdev->link_stat_timer, link_stat_timer_handler,
+-		    (unsigned long)mdev);
++	timer_setup(&mdev->link_stat_timer, link_stat_timer_handler, 0);
+ 
+ 	mdev->usb_device = usb_dev;
+ 	mdev->link_stat_timer.expires = jiffies + (2 * HZ);
diff --git a/recipes-kernel/most/files/0011-handle-snd_pcm_lib_mmap_vmalloc-removal.patch b/recipes-kernel/most/files/0011-handle-snd_pcm_lib_mmap_vmalloc-removal.patch
new file mode 100644
index 000000000..d4383c4f6
--- /dev/null
+++ b/recipes-kernel/most/files/0011-handle-snd_pcm_lib_mmap_vmalloc-removal.patch
@@ -0,0 +1,30 @@
+Handle snd_pcm_lib_mmap_vmalloc removal in 4.19
+
+Add .mmap field back to pcm_ops for kernels older than 4.19.
+
+Upstream-Status: Inappropriate
+
+Signed-off-by: Scott Murray <scott.murray@konsulko.com>
+
+diff --git a/aim-sound/sound.c b/aim-sound/sound.c
+index 4b3329b..c0a26be 100644
+--- a/aim-sound/sound.c
++++ b/aim-sound/sound.c
+@@ -17,6 +17,7 @@
+ #include <linux/printk.h>
+ #include <linux/kernel.h>
+ #include <linux/init.h>
++#include <linux/version.h>
+ #include <sound/core.h>
+ #include <sound/pcm.h>
+ #include <sound/pcm_params.h>
+@@ -463,6 +464,9 @@ static const struct snd_pcm_ops pcm_ops = {
+ 	.trigger    = pcm_trigger,
+ 	.pointer    = pcm_pointer,
+ 	.page       = snd_pcm_lib_get_vmalloc_page,
++#if LINUX_VERSION_CODE <  KERNEL_VERSION(4,19,0)
++	.mmap       = snd_pcm_lib_mmap_vmalloc,
++#endif
+ };
+ 
+ static int split_arg_list(char *buf, char **card_name, u16 *ch_num,
diff --git a/recipes-kernel/most/files/0012-Fix-build-with-5.4-kernel.patch b/recipes-kernel/most/files/0012-Fix-build-with-5.4-kernel.patch
new file mode 100644
index 000000000..02eca27d2
--- /dev/null
+++ b/recipes-kernel/most/files/0012-Fix-build-with-5.4-kernel.patch
@@ -0,0 +1,68 @@
+From 877d7475413bb787deb07aa83bafac03efa399fa Mon Sep 17 00:00:00 2001
+From: Paul Barker <paul.barker@sancloud.co.uk>
+Date: Mon, 24 Feb 2020 14:58:52 +0000
+Subject: [PATCH] Fix build with 5.4 kernel
+
+Signed-off-by: Paul Barker <paul.barker@sancloud.co.uk>
+---
+ driver/Makefile | 11 ++++++++++-
+ 1 file changed, 10 insertions(+), 1 deletion(-)
+
+diff --git a/Makefile b/Makefile
+index 281241d..609e692 100644
+--- a/Makefile
++++ b/Makefile
+@@ -5,6 +5,7 @@ SRC := $(shell pwd)
+ obj-m := mostcore.o
+ mostcore-y := mostcore/core.o
+ CFLAGS_core.o := -I$(src)/include/
++CFLAGS_mostcore/core.o := -I$(src)/include/
+ 
+ obj-m += default_conf.o
+ CFLAGL_default_conf.o := -I$(src)/include
+@@ -12,33 +13,41 @@ CFLAGL_default_conf.o := -I$(src)/include
+ obj-m += aim_cdev.o
+ aim_cdev-y := aim-cdev/cdev.o
+ CFLAGS_cdev.o := -I$(src)/include/
++CFLAGS_aim-cdev/cdev.o := -I$(src)/include/
+ 
+ obj-m += aim_network.o
+ aim_network-y := aim-network/networking.o
+ CFLAGS_networking.o := -I$(src)/include/
++CFLAGS_aim-network/networking.o := -I$(src)/include/
+ 
+ obj-m += aim_sound.o
+ aim_sound-y := aim-sound/sound.o
+ CFLAGS_sound.o := -I$(src)/include/
++CFLAGS_aim-sound/sound.o := -I$(src)/include/
+ 
+ obj-m += aim_v4l2.o
+ aim_v4l2-y := aim-v4l2/video.o
+ CFLAGS_video.o := -Idrivers/media/video -I$(src)/include/
++CFLAGS_aim-v4l2/video.o := -Idrivers/media/video -I$(src)/include/
+ 
+ obj-m += hdm_i2c.o
+ hdm_i2c-y := hdm-i2c/hdm_i2c.o
+ CFLAGS_hdm_i2c.o := -I$(src)/include/
++CFLAGS_hdm-i2c/hdm_i2c.o := -I$(src)/include/
+ 
+ ifdef CONFIG_OF
+ obj-m += hdm_dim2.o
+ hdm_dim2-y := hdm-dim2/dim2_hdm.o hdm-dim2/dim2_hal.o hdm-dim2/dim2_sysfs.o
+ CFLAGS_dim2_hdm.o := -I$(src)/include/
++CFLAGS_hdm-dim2/dim2_hdm.o := -I$(src)/include/
++CFLAGS_hdm-dim2/dim2_hal.o := -I$(src)/include/
++CFLAGS_hdm-dim2/dim2_sysfs.o := -I$(src)/include/
+ endif
+ 
+ obj-m += hdm_usb.o
+ hdm_usb-y := hdm-usb/hdm_usb.o
+ CFLAGS_hdm_usb.o := -I$(src)/include/
+-
++CFLAGS_hdm-usb/hdm_usb.o := -I$(src)/include/
+ 
+ all:
+ 	$(MAKE) -C $(KERNEL_SRC) M=$(SRC) modules
+-- 
+2.20.1
+