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authorVipin KUMAR <vipin.kumar@st.com>2010-01-15 19:15:46 +0530
committerTom Rix <Tom.Rix@windriver.com>2010-01-23 08:15:49 -0600
commit165fa406ad8c39c0c32a31476a8a9bda3db72851 (patch)
treea651bdff737408d282d5a674b02dd48558287eaa /include
parenta6e34f76c51c8514f1b691fc60394f09ae4fb2ff (diff)
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SPEAr : nand driver support for SPEAr SoCs
SPEAr SoCs contain an FSMC controller which can be used to interface with a range of memories eg. NAND, SRAM, NOR. Currently, this driver supports interfacing FSMC with NAND memories Signed-off-by: Vipin <vipin.kumar@st.com>
Diffstat (limited to 'include')
-rw-r--r--include/asm-arm/arch-spear/spr_nand.h57
1 files changed, 57 insertions, 0 deletions
diff --git a/include/asm-arm/arch-spear/spr_nand.h b/include/asm-arm/arch-spear/spr_nand.h
new file mode 100644
index 0000000..2b63dc7
--- /dev/null
+++ b/include/asm-arm/arch-spear/spr_nand.h
@@ -0,0 +1,57 @@
+/*
+ * (C) Copyright 2009
+ * Vipin Kumar, ST Micoelectronics, vipin.kumar@st.com.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifndef __SPR_NAND_H__
+#define __SPR_NAND_H__
+
+struct fsmc_regs {
+ u32 reserved_1[0x10];
+ u32 genmemctrl_pc;
+ u32 reserved_2;
+ u32 genmemctrl_comm;
+ u32 genmemctrl_attrib;
+ u32 reserved_3;
+ u32 genmemctrl_ecc;
+};
+
+/* genmemctrl_pc register definitions */
+#define FSMC_RESET (1 << 0)
+#define FSMC_WAITON (1 << 1)
+#define FSMC_ENABLE (1 << 2)
+#define FSMC_DEVTYPE_NAND (1 << 3)
+#define FSMC_DEVWID_8 (0 << 4)
+#define FSMC_DEVWID_16 (1 << 4)
+#define FSMC_ECCEN (1 << 6)
+#define FSMC_ECCPLEN_512 (0 << 7)
+#define FSMC_ECCPLEN_256 (1 << 7)
+#define FSMC_TCLR_1 (1 << 9)
+#define FSMC_TAR_1 (1 << 13)
+
+/* genmemctrl_comm register definitions */
+#define FSMC_TSET_0 (0 << 0)
+#define FSMC_TWAIT_6 (6 << 8)
+#define FSMC_THOLD_4 (4 << 16)
+#define FSMC_THIZ_1 (1 << 24)
+
+extern int spear_nand_init(struct nand_chip *nand);
+#endif