X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=drivers%2Fmtd%2Fnand%2Fpxa3xx_nand.c;h=0042a7ba11df12a82c18a372d7c495deaf169b8a;hb=2dc5b553b9bcd701bd7abd60f99f407cb0c37762;hp=d3ac5391f156e84fce4134fb22f8f01303206b90;hpb=ffd859979e2a84bccc14188d9fa760b2e4813515;p=oweals%2Fu-boot.git

diff --git a/drivers/mtd/nand/pxa3xx_nand.c b/drivers/mtd/nand/pxa3xx_nand.c
index d3ac5391f1..0042a7ba11 100644
--- a/drivers/mtd/nand/pxa3xx_nand.c
+++ b/drivers/mtd/nand/pxa3xx_nand.c
@@ -9,8 +9,9 @@
 
 #include <common.h>
 #include <malloc.h>
+#include <fdtdec.h>
 #include <nand.h>
-#include <asm/errno.h>
+#include <linux/errno.h>
 #include <asm/io.h>
 #include <asm/arch/cpu.h>
 #include <linux/mtd/mtd.h>
@@ -19,6 +20,8 @@
 
 #include "pxa3xx_nand.h"
 
+DECLARE_GLOBAL_DATA_PTR;
+
 #define TIMEOUT_DRAIN_FIFO	5	/* in ms */
 #define	CHIP_DELAY_TIMEOUT	200
 #define NAND_STOP_DELAY		40
@@ -1496,6 +1499,7 @@ static int alloc_nand_resource(struct pxa3xx_nand_info *info)
 		host->read_id_bytes = 4;
 		mtd->owner = THIS_MODULE;
 
+		nand_set_controller_data(chip, host);
 		chip->ecc.read_page	= pxa3xx_nand_read_page_hwecc;
 		chip->ecc.write_page	= pxa3xx_nand_write_page_hwecc;
 		chip->controller        = &info->controller;
@@ -1509,8 +1513,6 @@ static int alloc_nand_resource(struct pxa3xx_nand_info *info)
 		chip->cmdfunc		= nand_cmdfunc;
 	}
 
-	info->mmio_base = (void __iomem *)MVEBU_NAND_BASE;
-
 	/* Allocate a buffer to allow flash detection */
 	info->buf_size = INIT_BUFFER_SIZE;
 	info->data_buff = kmalloc(info->buf_size, GFP_KERNEL);
@@ -1532,17 +1534,62 @@ fail_disable_clk:
 static int pxa3xx_nand_probe_dt(struct pxa3xx_nand_info *info)
 {
 	struct pxa3xx_nand_platform_data *pdata;
+	const void *blob = gd->fdt_blob;
+	int node = -1;
 
 	pdata = kzalloc(sizeof(*pdata), GFP_KERNEL);
 	if (!pdata)
 		return -ENOMEM;
 
-	pdata->enable_arbiter = 1;
-	pdata->num_cs = 1;
+	/* Get address decoding nodes from the FDT blob */
+	do {
+		node = fdt_node_offset_by_compatible(blob, node,
+						     "marvell,mvebu-pxa3xx-nand");
+		if (node < 0)
+			break;
+
+		/* Bypass disabeld nodes */
+		if (!fdtdec_get_is_enabled(blob, node))
+			continue;
 
-	info->pdata = pdata;
+		/* Get the first enabled NAND controler base address */
+		info->mmio_base =
+			(void __iomem *)fdtdec_get_addr_size_auto_noparent(
+					blob, node, "reg", 0, NULL, true);
 
-	return 0;
+		pdata->num_cs = fdtdec_get_int(blob, node, "num-cs", 1);
+		if (pdata->num_cs != 1) {
+			error("pxa3xx driver supports single CS only\n");
+			break;
+		}
+
+		if (fdtdec_get_bool(blob, node, "nand-enable-arbiter"))
+			pdata->enable_arbiter = 1;
+
+		if (fdtdec_get_bool(blob, node, "nand-keep-config"))
+			pdata->keep_config = 1;
+
+		/*
+		 * ECC parameters.
+		 * If these are not set, they will be selected according
+		 * to the detected flash type.
+		 */
+		/* ECC strength */
+		pdata->ecc_strength = fdtdec_get_int(blob, node,
+						     "nand-ecc-strength", 0);
+
+		/* ECC step size */
+		pdata->ecc_step_size = fdtdec_get_int(blob, node,
+						      "nand-ecc-step-size", 0);
+
+		info->pdata = pdata;
+
+		/* Currently support only a single NAND controller */
+		return 0;
+
+	} while (node >= 0);
+
+	return -EINVAL;
 }
 
 static int pxa3xx_nand_probe(struct pxa3xx_nand_info *info)
@@ -1602,8 +1649,8 @@ void board_nand_init(void)
 	int ret;
 
 	info = kzalloc(sizeof(*info) +
-				sizeof(*host) * CONFIG_SYS_MAX_NAND_DEVICE,
-			GFP_KERNEL);
+		       sizeof(*host) * CONFIG_SYS_MAX_NAND_DEVICE,
+		       GFP_KERNEL);
 	if (!info)
 		return;