layerscape: add ls2088ardb device support

The QorIQ LS2088A processor is built on the Layerscape
architecture combining eight ARM A72 processor cores
with advanced, high-performance datapath acceleration
and network, peripheral interfaces required for
networking, telecom, wireless infrastructure, aerospace
applications and general-purpose embedded applications.

Features summary:
- Eight 64-bit ARM v8 Cortex-A72 CPUs
- Two 64-bit DDR4 SDRAM memory controller with ECC
- One 32-bit DDR3 SDRAM memory controller with ECC
- Data path acceleration architecture 2.0 (DPAA2)
- Ethernet interfaces
- IFC, 4 PCIe, 2 SATA, 2 USB, 1 SDXC, 2 DUARTs etc

Signed-off-by: Yutang Jiang <yutang.jiang@nxp.com>

1 files changed, 90 insertions, 0 deletions

diff --git a/target/linux/layerscape/patches-4.4/1239-mtd-extend-physmap_of-to-let-the-device-tree-specify.patch b/target/linux/layerscape/patches-4.4/1239-mtd-extend-physmap_of-to-let-the-device-tree-specify.patch
new file mode 100644
index 0000000000..8254490bb0
--- /dev/null
+++ b/target/linux/layerscape/patches-4.4/1239-mtd-extend-physmap_of-to-let-the-device-tree-specify.patch
@@ -0,0 +1,90 @@
+From 6b54054c4053215fe4add195c67daca9a466ba92 Mon Sep 17 00:00:00 2001
+From: "ying.zhang" <ying.zhang22455@nxp.com>
+Date: Fri, 23 Dec 2016 22:21:22 +0800
+Subject: [PATCH] mtd: extend physmap_of to let the device tree specify the
+ parition probe
+
+This is to support custom partitioning schemes for embedded PPC. To use
+define your own mtd_part_parser and then add something like:
+	linux,part-probe = "my_probe", "cmdlinepart";
+        To the board's dts file.
+
+If linux,part-probe is not specified then this behaves the same as before.
+
+Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
+Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
+---
+ drivers/mtd/maps/physmap_of.c |   46 ++++++++++++++++++++++++++++++++++++++++-
+ 1 file changed, 45 insertions(+), 1 deletion(-)
+
+diff --git a/drivers/mtd/maps/physmap_of.c b/drivers/mtd/maps/physmap_of.c
+index fef1d1b..e46b4e9 100644
+--- a/drivers/mtd/maps/physmap_of.c
++++ b/drivers/mtd/maps/physmap_of.c
+@@ -112,9 +112,47 @@ static struct mtd_info *obsolete_probe(struct platform_device *dev,
+ static const char * const part_probe_types_def[] = {
+ 	"cmdlinepart", "RedBoot", "ofpart", "ofoldpart", NULL };
+ 
++static const char * const *of_get_probes(struct device_node *dp)
++{
++	const char *cp;
++	int cplen;
++	unsigned int l;
++	unsigned int count;
++	const char **res;
++
++	cp = of_get_property(dp, "linux,part-probe", &cplen);
++	if (cp == NULL)
++		return part_probe_types_def;
++
++	count = 0;
++	for (l = 0; l != cplen; l++)
++		if (cp[l] == 0)
++			count++;
++
++	res = kzalloc((count + 1)*sizeof(*res), GFP_KERNEL);
++	if (!res)
++		return NULL;
++	count = 0;
++	while (cplen > 0) {
++		res[count] = cp;
++		l = strlen(cp) + 1;
++		cp += l;
++		cplen -= l;
++		count++;
++	}
++	return res;
++}
++
++static void of_free_probes(const char * const *probes)
++{
++	if (probes != part_probe_types_def)
++		kfree(probes);
++}
++
+ static const struct of_device_id of_flash_match[];
+ static int of_flash_probe(struct platform_device *dev)
+ {
++	const char * const *part_probe_types;
+ 	const struct of_device_id *match;
+ 	struct device_node *dp = dev->dev.of_node;
+ 	struct resource res;
+@@ -273,8 +311,14 @@ static int of_flash_probe(struct platform_device *dev)
+ 		goto err_out;
+ 
+ 	ppdata.of_node = dp;
+-	mtd_device_parse_register(info->cmtd, part_probe_types_def, &ppdata,
++	part_probe_types = of_get_probes(dp);
++	if (!part_probe_types) {
++		err = -ENOMEM;
++		goto err_out;
++	}
++	mtd_device_parse_register(info->cmtd, part_probe_types, &ppdata,
+ 			NULL, 0);
++	of_free_probes(part_probe_types);
+ 
+ 	kfree(mtd_list);
+ 
+-- 
+1.7.9.5
+