layerscape: add patches-5.4

Add patches for linux-5.4. The patches are from NXP LSDK-20.04 release
which was tagged LSDK-20.04-V5.4.
https://source.codeaurora.org/external/qoriq/qoriq-components/linux/

For boards LS1021A-IOT, and Traverse-LS1043 which are not involved in
LSDK, port the dts patches from 4.14.

The patches are sorted into the following categories:
  301-arch-xxxx
  302-dts-xxxx
  303-core-xxxx
  701-net-xxxx
  801-audio-xxxx
  802-can-xxxx
  803-clock-xxxx
  804-crypto-xxxx
  805-display-xxxx
  806-dma-xxxx
  807-gpio-xxxx
  808-i2c-xxxx
  809-jailhouse-xxxx
  810-keys-xxxx
  811-kvm-xxxx
  812-pcie-xxxx
  813-pm-xxxx
  814-qe-xxxx
  815-sata-xxxx
  816-sdhc-xxxx
  817-spi-xxxx
  818-thermal-xxxx
  819-uart-xxxx
  820-usb-xxxx
  821-vfio-xxxx

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>

1 files changed, 157 insertions, 0 deletions

diff --git a/target/linux/layerscape/patches-5.4/701-net-0224-bus-fsl-mc-add-autorescan-sysfs.patch b/target/linux/layerscape/patches-5.4/701-net-0224-bus-fsl-mc-add-autorescan-sysfs.patch
new file mode 100644
index 0000000000..6128e7d0b4
--- /dev/null
+++ b/target/linux/layerscape/patches-5.4/701-net-0224-bus-fsl-mc-add-autorescan-sysfs.patch
@@ -0,0 +1,157 @@
+From 02e92b21edb4df7285f27ea5f0403377dcabe22d Mon Sep 17 00:00:00 2001
+From: Ioana Ciornei <ioana.ciornei@nxp.com>
+Date: Tue, 29 Oct 2019 22:48:55 +0200
+Subject: [PATCH] bus: fsl-mc: add autorescan sysfs
+
+Add the autorescan sysfs in order to enable/disable the DPRC IRQs on
+which automatic rescan of the bus is performed. This is important when
+dynamic creation of objects is needed to happen in a timely manner because
+object creation can be bundled together.
+
+Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
+---
+ drivers/bus/fsl-mc/dprc-driver.c    | 17 ++++++++++--
+ drivers/bus/fsl-mc/fsl-mc-bus.c     | 55 +++++++++++++++++++++++++++++++++++++
+ drivers/bus/fsl-mc/fsl-mc-private.h |  4 +++
+ include/linux/fsl/mc.h              |  1 +
+ 4 files changed, 75 insertions(+), 2 deletions(-)
+
+--- a/drivers/bus/fsl-mc/dprc-driver.c
++++ b/drivers/bus/fsl-mc/dprc-driver.c
+@@ -484,8 +484,9 @@ out:
+ /*
+  * Disable and clear interrupt for a given DPRC object
+  */
+-static int disable_dprc_irq(struct fsl_mc_device *mc_dev)
++int disable_dprc_irq(struct fsl_mc_device *mc_dev)
+ {
++	struct fsl_mc_bus *mc_bus = to_fsl_mc_bus(mc_dev);
+ 	int error;
+ 	struct fsl_mc_io *mc_io = mc_dev->mc_io;
+ 
+@@ -522,9 +523,18 @@ static int disable_dprc_irq(struct fsl_m
+ 		return error;
+ 	}
+ 
++	mc_bus->irq_enabled = 0;
++
+ 	return 0;
+ }
+ 
++int get_dprc_irq_state(struct fsl_mc_device *mc_dev)
++{
++	struct fsl_mc_bus *mc_bus = to_fsl_mc_bus(mc_dev);
++
++	return mc_bus->irq_enabled;
++}
++
+ static int register_dprc_irq_handler(struct fsl_mc_device *mc_dev)
+ {
+ 	int error;
+@@ -551,8 +561,9 @@ static int register_dprc_irq_handler(str
+ 	return 0;
+ }
+ 
+-static int enable_dprc_irq(struct fsl_mc_device *mc_dev)
++int enable_dprc_irq(struct fsl_mc_device *mc_dev)
+ {
++	struct fsl_mc_bus *mc_bus = to_fsl_mc_bus(mc_dev);
+ 	int error;
+ 
+ 	/*
+@@ -580,6 +591,8 @@ static int enable_dprc_irq(struct fsl_mc
+ 		return error;
+ 	}
+ 
++	mc_bus->irq_enabled = 1;
++
+ 	return 0;
+ }
+ 
+--- a/drivers/bus/fsl-mc/fsl-mc-bus.c
++++ b/drivers/bus/fsl-mc/fsl-mc-bus.c
+@@ -237,8 +237,63 @@ static ssize_t rescan_store(struct bus_t
+ }
+ static BUS_ATTR_WO(rescan);
+ 
++static int fsl_mc_bus_set_autorescan(struct device *dev, void *data)
++{
++	struct fsl_mc_device *root_mc_dev;
++	unsigned long val;
++	char *buf = data;
++
++	if (!fsl_mc_is_root_dprc(dev))
++		goto exit;
++
++	root_mc_dev = to_fsl_mc_device(dev);
++
++	if (kstrtoul(buf, 0, &val) < 0)
++		return -EINVAL;
++
++	if (val)
++		enable_dprc_irq(root_mc_dev);
++	else
++		disable_dprc_irq(root_mc_dev);
++
++exit:
++	return 0;
++}
++
++static int fsl_mc_bus_get_autorescan(struct device *dev, void *data)
++{
++	struct fsl_mc_device *root_mc_dev;
++	char *buf = data;
++
++	if (!fsl_mc_is_root_dprc(dev))
++		goto exit;
++
++	root_mc_dev = to_fsl_mc_device(dev);
++
++	sprintf(buf, "%d\n", get_dprc_irq_state(root_mc_dev));
++exit:
++	return 0;
++}
++
++static ssize_t autorescan_store(struct bus_type *bus,
++				const char *buf, size_t count)
++{
++	bus_for_each_dev(bus, NULL, (void *)buf, fsl_mc_bus_set_autorescan);
++
++	return count;
++}
++
++static ssize_t autorescan_show(struct bus_type *bus, char *buf)
++{
++	bus_for_each_dev(bus, NULL, (void *)buf, fsl_mc_bus_get_autorescan);
++	return strlen(buf);
++}
++
++static BUS_ATTR_RW(autorescan);
++
+ static struct attribute *fsl_mc_bus_attrs[] = {
+ 	&bus_attr_rescan.attr,
++	&bus_attr_autorescan.attr,
+ 	NULL,
+ };
+ 
+--- a/drivers/bus/fsl-mc/fsl-mc-private.h
++++ b/drivers/bus/fsl-mc/fsl-mc-private.h
+@@ -203,4 +203,8 @@ static inline void fsl_mc_uapi_remove_de
+ 
+ #endif
+ 
++int disable_dprc_irq(struct fsl_mc_device *mc_dev);
++int enable_dprc_irq(struct fsl_mc_device *mc_dev);
++int get_dprc_irq_state(struct fsl_mc_device *mc_dev);
++
+ #endif /* _FSL_MC_PRIVATE_H_ */
+--- a/include/linux/fsl/mc.h
++++ b/include/linux/fsl/mc.h
+@@ -1006,6 +1006,7 @@ struct fsl_mc_bus {
+ 	struct mutex scan_mutex;    /* serializes bus scanning */
+ 	struct dprc_attributes dprc_attr;
+ 	struct fsl_mc_uapi uapi_misc;
++	int irq_enabled;
+ };
+ 
+ int dprc_scan_objects(struct fsl_mc_device *mc_bus_dev,