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, 80 insertions, 0 deletions

diff --git a/target/linux/layerscape/patches-5.4/807-gpio-0001-gpio-mpc8xxx-change-irq-handler-from-chained-to-norm.patch b/target/linux/layerscape/patches-5.4/807-gpio-0001-gpio-mpc8xxx-change-irq-handler-from-chained-to-norm.patch
new file mode 100644
index 0000000000..01d2772138
--- /dev/null
+++ b/target/linux/layerscape/patches-5.4/807-gpio-0001-gpio-mpc8xxx-change-irq-handler-from-chained-to-norm.patch
@@ -0,0 +1,80 @@
+From 8070fa91b95e20cd270c8d76bf45f2a5423358bf Mon Sep 17 00:00:00 2001
+From: Song Hui <hui.song_1@nxp.com>
+Date: Fri, 6 Sep 2019 19:42:59 +0800
+Subject: [PATCH] gpio/mpc8xxx: change irq handler from chained to normal
+
+More than one gpio controllers can share one interrupt, change the
+driver to request shared irq.
+
+While this will work, it will mess up userspace accounting of the number
+of interrupts per second in tools such as vmstat.  The reason is that
+for every GPIO interrupt, /proc/interrupts records the count against GIC
+interrupt 68 or 69, as well as the GPIO itself.  So, for every GPIO
+interrupt, the total number of interrupts that the system has seen
+increments by two.
+
+Signed-off-by: Laurentiu Tudor <Laurentiu.Tudor@nxp.com>
+Signed-off-by: Alex Marginean <alexandru.marginean@nxp.com>
+Signed-off-by: Song Hui <hui.song_1@nxp.com>
+---
+ drivers/gpio/gpio-mpc8xxx.c | 30 +++++++++++++++++++-----------
+ 1 file changed, 19 insertions(+), 11 deletions(-)
+
+--- a/drivers/gpio/gpio-mpc8xxx.c
++++ b/drivers/gpio/gpio-mpc8xxx.c
+@@ -22,6 +22,7 @@
+ #include <linux/irq.h>
+ #include <linux/gpio/driver.h>
+ #include <linux/bitops.h>
++#include <linux/interrupt.h>
+ 
+ #define MPC8XXX_GPIO_PINS	32
+ 
+@@ -127,20 +128,19 @@ static int mpc8xxx_gpio_to_irq(struct gp
+ 		return -ENXIO;
+ }
+ 
+-static void mpc8xxx_gpio_irq_cascade(struct irq_desc *desc)
++static irqreturn_t mpc8xxx_gpio_irq_cascade(int irq, void *data)
+ {
+-	struct mpc8xxx_gpio_chip *mpc8xxx_gc = irq_desc_get_handler_data(desc);
+-	struct irq_chip *chip = irq_desc_get_chip(desc);
++	struct mpc8xxx_gpio_chip *mpc8xxx_gc = data;
+ 	struct gpio_chip *gc = &mpc8xxx_gc->gc;
+-	unsigned int mask;
++	unsigned long mask;
++	int i;
+ 
+ 	mask = gc->read_reg(mpc8xxx_gc->regs + GPIO_IER)
+ 		& gc->read_reg(mpc8xxx_gc->regs + GPIO_IMR);
+-	if (mask)
+-		generic_handle_irq(irq_linear_revmap(mpc8xxx_gc->irq,
+-						     32 - ffs(mask)));
+-	if (chip->irq_eoi)
+-		chip->irq_eoi(&desc->irq_data);
++	for_each_set_bit(i, &mask, 32)
++		generic_handle_irq(irq_linear_revmap(mpc8xxx_gc->irq, 31 - i));
++
++	return IRQ_HANDLED;
+ }
+ 
+ static void mpc8xxx_irq_unmask(struct irq_data *d)
+@@ -414,8 +414,16 @@ static int mpc8xxx_probe(struct platform
+ 	if (devtype->gpio_dir_in_init)
+ 		devtype->gpio_dir_in_init(gc);
+ 
+-	irq_set_chained_handler_and_data(mpc8xxx_gc->irqn,
+-					 mpc8xxx_gpio_irq_cascade, mpc8xxx_gc);
++	ret = devm_request_irq(&pdev->dev, mpc8xxx_gc->irqn,
++			       mpc8xxx_gpio_irq_cascade,
++			       IRQF_NO_THREAD | IRQF_SHARED, "gpio-cascade",
++			       mpc8xxx_gc);
++	if (ret) {
++		dev_err(&pdev->dev, "%s: failed to devm_request_irq(%d), ret = %d\n",
++			np->full_name, mpc8xxx_gc->irqn, ret);
++		goto err;
++	}
++
+ 	return 0;
+ err:
+ 	iounmap(mpc8xxx_gc->regs);