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, 87 insertions, 0 deletions

diff --git a/target/linux/layerscape/patches-5.4/701-net-0292-staging-fsl_ppfe-eth-Avoid-packet-drop-at-TMU-queues.patch b/target/linux/layerscape/patches-5.4/701-net-0292-staging-fsl_ppfe-eth-Avoid-packet-drop-at-TMU-queues.patch
new file mode 100644
index 0000000000..eeea3740dd
--- /dev/null
+++ b/target/linux/layerscape/patches-5.4/701-net-0292-staging-fsl_ppfe-eth-Avoid-packet-drop-at-TMU-queues.patch
@@ -0,0 +1,87 @@
+From 8b99b4595d2b5f4d0b2252b16de83572e03b337a Mon Sep 17 00:00:00 2001
+From: Kavi Akhila-B46177 <akhila.kavi@nxp.com>
+Date: Thu, 2 Nov 2017 12:05:35 +0530
+Subject: [PATCH] staging: fsl_ppfe/eth: Avoid packet drop at TMU queues
+
+Added flow control between TMU queues and PFE Linux driver,
+based on TMU credits availability.
+Added tx_qos module parameter to control this behavior.
+Use queue-0 as default queue to transmit packets.
+
+Signed-off-by: Calvin Johnson <calvin.johnson@nxp.com>
+Signed-off-by: Akhila Kavi <akhila.kavi@nxp.com>
+Signed-off-by: Anjaneyulu Jagarlmudi <anji.jagarlmudi@nxp.com>
+---
+ drivers/staging/fsl_ppfe/pfe_eth.c     | 17 +++++++++++++----
+ drivers/staging/fsl_ppfe/pfe_hif_lib.c |  7 +++++--
+ 2 files changed, 18 insertions(+), 6 deletions(-)
+
+--- a/drivers/staging/fsl_ppfe/pfe_eth.c
++++ b/drivers/staging/fsl_ppfe/pfe_eth.c
+@@ -293,10 +293,10 @@ static int pfe_eth_sysfs_init(struct net
+ 	/* Initialize the default values */
+ 
+ 	/*
+-	 * By default, packets without conntrack will use this default high
++	 * By default, packets without conntrack will use this default low
+ 	 * priority queue
+ 	 */
+-	priv->default_priority = 15;
++	priv->default_priority = 0;
+ 
+ 	/* Create our sysfs files */
+ 	err = device_create_file(&ndev->dev, &dev_attr_default_priority);
+@@ -1566,10 +1566,17 @@ static int pfe_eth_might_stop_tx(struct
+ 				 unsigned int n_segs)
+ {
+ 	ktime_t kt;
++	int tried = 0;
+ 
++try_again:
+ 	if (unlikely((__hif_tx_avail(&pfe->hif) < n_desc) ||
+-		     (hif_lib_tx_avail(&priv->client, queuenum) < n_desc) ||
++	(hif_lib_tx_avail(&priv->client, queuenum) < n_desc) ||
+ 	(hif_lib_tx_credit_avail(pfe, priv->id, queuenum) < n_segs))) {
++		if (!tried) {
++			__hif_lib_update_credit(&priv->client, queuenum);
++			tried = 1;
++			goto try_again;
++		}
+ #ifdef PFE_ETH_TX_STATS
+ 		if (__hif_tx_avail(&pfe->hif) < n_desc) {
+ 			priv->stop_queue_hif[queuenum]++;
+@@ -1692,8 +1699,10 @@ static void pfe_eth_flush_tx(struct pfe_
+ 
+ 	netif_info(priv, tx_done, priv->ndev, "%s\n", __func__);
+ 
+-	for (ii = 0; ii < emac_txq_cnt; ii++)
++	for (ii = 0; ii < emac_txq_cnt; ii++) {
+ 		pfe_eth_flush_txQ(priv, ii, 0, 0);
++		__hif_lib_update_credit(&priv->client, ii);
++	}
+ }
+ 
+ void pfe_tx_get_req_desc(struct sk_buff *skb, unsigned int *n_desc, unsigned int
+--- a/drivers/staging/fsl_ppfe/pfe_hif_lib.c
++++ b/drivers/staging/fsl_ppfe/pfe_hif_lib.c
+@@ -34,7 +34,10 @@
+ 
+ unsigned int lro_mode;
+ unsigned int page_mode;
+-unsigned int tx_qos;
++unsigned int tx_qos = 1;
++module_param(tx_qos, uint, 0444);
++MODULE_PARM_DESC(tx_qos, "0: disable ,\n"
++			 "1: enable (default), guarantee no packet drop at TMU level\n");
+ unsigned int pfe_pkt_size;
+ unsigned int pfe_pkt_headroom;
+ unsigned int emac_txq_cnt;
+@@ -576,7 +579,7 @@ void __hif_lib_update_credit(struct hif_
+ 
+ 	if (tx_qos) {
+ 		tmu_tx_packets = be32_to_cpu(pe_dmem_read(TMU0_ID +
+-			client->id, TMU_DM_TX_TRANS, 4));
++			client->id, (TMU_DM_TX_TRANS + (queue * 4)), 4));
+ 
+ 		/* tx_packets counter overflowed */
+ 		if (tmu_tx_packets >