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, 70 insertions, 0 deletions

diff --git a/target/linux/layerscape/patches-5.4/808-i2c-0016-LF-162-i2c-imx-Defer-probing-if-EDMA-not-available.patch b/target/linux/layerscape/patches-5.4/808-i2c-0016-LF-162-i2c-imx-Defer-probing-if-EDMA-not-available.patch
new file mode 100644
index 0000000000..ce19d0b98b
--- /dev/null
+++ b/target/linux/layerscape/patches-5.4/808-i2c-0016-LF-162-i2c-imx-Defer-probing-if-EDMA-not-available.patch
@@ -0,0 +1,70 @@
+From 9de3b340d84b75f93081f871b640a065cba4ded0 Mon Sep 17 00:00:00 2001
+From: Peng Ma <peng.ma@nxp.com>
+Date: Tue, 26 Nov 2019 16:02:00 +0800
+Subject: [PATCH] LF-162: i2c: imx: Defer probing if EDMA not available
+
+EDMA may be not available or defered due to dependencies on
+other modules, If these scenarios is encountered, we should
+defer probing.
+
+Signed-off-by: Peng Ma <peng.ma@nxp.com>
+---
+ drivers/i2c/busses/i2c-imx.c | 16 +++++++++++-----
+ 1 file changed, 11 insertions(+), 5 deletions(-)
+
+--- a/drivers/i2c/busses/i2c-imx.c
++++ b/drivers/i2c/busses/i2c-imx.c
+@@ -369,8 +369,8 @@ static void i2c_imx_reset_regs(struct im
+ }
+ 
+ /* Functions for DMA support */
+-static void i2c_imx_dma_request(struct imx_i2c_struct *i2c_imx,
+-						dma_addr_t phy_addr)
++static int i2c_imx_dma_request(struct imx_i2c_struct *i2c_imx,
++			       dma_addr_t phy_addr)
+ {
+ 	struct imx_i2c_dma *dma;
+ 	struct dma_slave_config dma_sconfig;
+@@ -379,7 +379,7 @@ static void i2c_imx_dma_request(struct i
+ 
+ 	dma = devm_kzalloc(dev, sizeof(*dma), GFP_KERNEL);
+ 	if (!dma)
+-		return;
++		return -ENOMEM;
+ 
+ 	dma->chan_tx = dma_request_chan(dev, "tx");
+ 	if (IS_ERR(dma->chan_tx)) {
+@@ -424,7 +424,7 @@ static void i2c_imx_dma_request(struct i
+ 	dev_info(dev, "using %s (tx) and %s (rx) for DMA transfers\n",
+ 		dma_chan_name(dma->chan_tx), dma_chan_name(dma->chan_rx));
+ 
+-	return;
++	return 0;
+ 
+ fail_rx:
+ 	dma_release_channel(dma->chan_rx);
+@@ -432,6 +432,8 @@ fail_tx:
+ 	dma_release_channel(dma->chan_tx);
+ fail_al:
+ 	devm_kfree(dev, dma);
++
++	return ret;
+ }
+ 
+ static void i2c_imx_dma_callback(void *arg)
+@@ -1602,10 +1604,14 @@ static int i2c_imx_probe(struct platform
+ 	dev_info(&i2c_imx->adapter.dev, "IMX I2C adapter registered\n");
+ 
+ 	/* Init DMA config if supported */
+-	i2c_imx_dma_request(i2c_imx, phy_addr);
++	ret = i2c_imx_dma_request(i2c_imx, phy_addr);
++	if (ret == -EPROBE_DEFER)
++		goto i2c_adapter_remove;
+ 
+ 	return 0;   /* Return OK */
+ 
++i2c_adapter_remove:
++	i2c_del_adapter(&i2c_imx->adapter);
+ clk_notifier_unregister:
+ 	clk_notifier_unregister(i2c_imx->clk, &i2c_imx->clk_change_nb);
+ rpm_disable: