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, 58 insertions, 0 deletions

diff --git a/target/linux/layerscape/patches-5.4/701-net-0148-bus-fsl-mc-use-raw-spin-lock-to-serialize-mc-cmds.patch b/target/linux/layerscape/patches-5.4/701-net-0148-bus-fsl-mc-use-raw-spin-lock-to-serialize-mc-cmds.patch
new file mode 100644
index 0000000000..42934e2245
--- /dev/null
+++ b/target/linux/layerscape/patches-5.4/701-net-0148-bus-fsl-mc-use-raw-spin-lock-to-serialize-mc-cmds.patch
@@ -0,0 +1,58 @@
+From 035546179039d430b32b2cace256552455abf061 Mon Sep 17 00:00:00 2001
+From: Laurentiu Tudor <laurentiu.tudor@nxp.com>
+Date: Thu, 29 Aug 2019 11:39:45 +0300
+Subject: [PATCH] bus: fsl-mc: use raw spin lock to serialize mc cmds
+
+Replace the spinlock that serializes the MC commands with a raw
+spinlock. This is needed for the RT kernel because there are MC
+commands sent in interrupt context.
+
+Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
+---
+ drivers/bus/fsl-mc/mc-io.c  | 2 +-
+ drivers/bus/fsl-mc/mc-sys.c | 4 ++--
+ include/linux/fsl/mc.h      | 2 +-
+ 3 files changed, 4 insertions(+), 4 deletions(-)
+
+--- a/drivers/bus/fsl-mc/mc-io.c
++++ b/drivers/bus/fsl-mc/mc-io.c
+@@ -82,7 +82,7 @@ int __must_check fsl_create_mc_io(struct
+ 	mc_io->portal_phys_addr = mc_portal_phys_addr;
+ 	mc_io->portal_size = mc_portal_size;
+ 	if (flags & FSL_MC_IO_ATOMIC_CONTEXT_PORTAL)
+-		spin_lock_init(&mc_io->spinlock);
++		raw_spin_lock_init(&mc_io->spinlock);
+ 	else
+ 		mutex_init(&mc_io->mutex);
+ 
+--- a/drivers/bus/fsl-mc/mc-sys.c
++++ b/drivers/bus/fsl-mc/mc-sys.c
+@@ -251,7 +251,7 @@ int mc_send_command(struct fsl_mc_io *mc
+ 		return -EINVAL;
+ 
+ 	if (mc_io->flags & FSL_MC_IO_ATOMIC_CONTEXT_PORTAL)
+-		spin_lock_irqsave(&mc_io->spinlock, irq_flags);
++		raw_spin_lock_irqsave(&mc_io->spinlock, irq_flags);
+ 	else
+ 		mutex_lock(&mc_io->mutex);
+ 
+@@ -287,7 +287,7 @@ int mc_send_command(struct fsl_mc_io *mc
+ 	error = 0;
+ common_exit:
+ 	if (mc_io->flags & FSL_MC_IO_ATOMIC_CONTEXT_PORTAL)
+-		spin_unlock_irqrestore(&mc_io->spinlock, irq_flags);
++		raw_spin_unlock_irqrestore(&mc_io->spinlock, irq_flags);
+ 	else
+ 		mutex_unlock(&mc_io->mutex);
+ 
+--- a/include/linux/fsl/mc.h
++++ b/include/linux/fsl/mc.h
+@@ -340,7 +340,7 @@ struct fsl_mc_io {
+ 		 * This field is only meaningful if the
+ 		 * FSL_MC_IO_ATOMIC_CONTEXT_PORTAL flag is set
+ 		 */
+-		spinlock_t spinlock;	/* serializes mc_send_command() */
++		raw_spinlock_t spinlock; /* serializes mc_send_command() */
+ 	};
+ };
+