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-0256-net-mscc-ocelot-create-a-helper-for-changing-the-por.patch b/target/linux/layerscape/patches-5.4/701-net-0256-net-mscc-ocelot-create-a-helper-for-changing-the-por.patch
new file mode 100644
index 0000000000..1aefe3436f
--- /dev/null
+++ b/target/linux/layerscape/patches-5.4/701-net-0256-net-mscc-ocelot-create-a-helper-for-changing-the-por.patch
@@ -0,0 +1,87 @@
+From e870793b277eeaf3c455971d9610f039fd9ab160 Mon Sep 17 00:00:00 2001
+From: Vladimir Oltean <vladimir.oltean@nxp.com>
+Date: Thu, 14 Nov 2019 17:03:23 +0200
+Subject: [PATCH] net: mscc: ocelot: create a helper for changing the port MTU
+
+Since in an NPI/DSA setup, not all ports will have the same MTU, we need
+to make sure the watermarks for pause frames and/or tail dropping logic
+that existed in the driver is still coherent for the new MTU values.
+
+We need to do this because the NPI (aka external CPU) port needs an
+increased MTU for the DSA tag. This will be done in a future patch.
+
+Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
+Reviewed-by: Andrew Lunn <andrew@lunn.ch>
+Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+---
+ drivers/net/ethernet/mscc/ocelot.c | 40 ++++++++++++++++++++++----------------
+ 1 file changed, 23 insertions(+), 17 deletions(-)
+
+--- a/drivers/net/ethernet/mscc/ocelot.c
++++ b/drivers/net/ethernet/mscc/ocelot.c
+@@ -2101,11 +2101,32 @@ static int ocelot_init_timestamp(struct
+ 	return 0;
+ }
+ 
+-static void ocelot_init_port(struct ocelot *ocelot, int port)
++static void ocelot_port_set_mtu(struct ocelot *ocelot, int port, size_t mtu)
+ {
+ 	struct ocelot_port *ocelot_port = ocelot->ports[port];
+ 	int atop_wm;
+ 
++	ocelot_port_writel(ocelot_port, mtu, DEV_MAC_MAXLEN_CFG);
++
++	/* Set Pause WM hysteresis
++	 * 152 = 6 * mtu / OCELOT_BUFFER_CELL_SZ
++	 * 101 = 4 * mtu / OCELOT_BUFFER_CELL_SZ
++	 */
++	ocelot_write_rix(ocelot, SYS_PAUSE_CFG_PAUSE_ENA |
++			 SYS_PAUSE_CFG_PAUSE_STOP(101) |
++			 SYS_PAUSE_CFG_PAUSE_START(152), SYS_PAUSE_CFG, port);
++
++	/* Tail dropping watermark */
++	atop_wm = (ocelot->shared_queue_sz - 9 * mtu) / OCELOT_BUFFER_CELL_SZ;
++	ocelot_write_rix(ocelot, ocelot_wm_enc(9 * mtu),
++			 SYS_ATOP, port);
++	ocelot_write(ocelot, ocelot_wm_enc(atop_wm), SYS_ATOP_TOT_CFG);
++}
++
++static void ocelot_init_port(struct ocelot *ocelot, int port)
++{
++	struct ocelot_port *ocelot_port = ocelot->ports[port];
++
+ 	INIT_LIST_HEAD(&ocelot_port->skbs);
+ 
+ 	/* Basic L2 initialization */
+@@ -2126,8 +2147,7 @@ static void ocelot_init_port(struct ocel
+ 			   DEV_MAC_HDX_CFG);
+ 
+ 	/* Set Max Length and maximum tags allowed */
+-	ocelot_port_writel(ocelot_port, VLAN_ETH_FRAME_LEN,
+-			   DEV_MAC_MAXLEN_CFG);
++	ocelot_port_set_mtu(ocelot, port, VLAN_ETH_FRAME_LEN);
+ 	ocelot_port_writel(ocelot_port, DEV_MAC_TAGS_CFG_TAG_ID(ETH_P_8021AD) |
+ 			   DEV_MAC_TAGS_CFG_VLAN_AWR_ENA |
+ 			   DEV_MAC_TAGS_CFG_VLAN_LEN_AWR_ENA,
+@@ -2137,20 +2157,6 @@ static void ocelot_init_port(struct ocel
+ 	ocelot_port_writel(ocelot_port, 0, DEV_MAC_FC_MAC_HIGH_CFG);
+ 	ocelot_port_writel(ocelot_port, 0, DEV_MAC_FC_MAC_LOW_CFG);
+ 
+-	/* Set Pause WM hysteresis
+-	 * 152 = 6 * VLAN_ETH_FRAME_LEN / OCELOT_BUFFER_CELL_SZ
+-	 * 101 = 4 * VLAN_ETH_FRAME_LEN / OCELOT_BUFFER_CELL_SZ
+-	 */
+-	ocelot_write_rix(ocelot, SYS_PAUSE_CFG_PAUSE_ENA |
+-			 SYS_PAUSE_CFG_PAUSE_STOP(101) |
+-			 SYS_PAUSE_CFG_PAUSE_START(152), SYS_PAUSE_CFG, port);
+-
+-	/* Tail dropping watermark */
+-	atop_wm = (ocelot->shared_queue_sz - 9 * VLAN_ETH_FRAME_LEN) / OCELOT_BUFFER_CELL_SZ;
+-	ocelot_write_rix(ocelot, ocelot_wm_enc(9 * VLAN_ETH_FRAME_LEN),
+-			 SYS_ATOP, port);
+-	ocelot_write(ocelot, ocelot_wm_enc(atop_wm), SYS_ATOP_TOT_CFG);
+-
+ 	/* Drop frames with multicast source address */
+ 	ocelot_rmw_gix(ocelot, ANA_PORT_DROP_CFG_DROP_MC_SMAC_ENA,
+ 		       ANA_PORT_DROP_CFG_DROP_MC_SMAC_ENA,