am335x, guardian: mem: Add board dependent mem values
- Add mem-guardian.h derived from am33xx/mem.h
* Add GPMC config values optimized for Bosch Guardian Board
* NAND Chip used by Bosch Guardian Board is Micron MT29F4G08ABBFA
Signed-off-by: Moses Christopher <BollavarapuMoses.Christopher@in.bosch.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Link: https://lore.kernel.org/r/20210611161350.2141-3-Gireesh.Hiremath@in.bosch.com
diff --git a/arch/arm/include/asm/arch-am33xx/mem-guardian.h b/arch/arm/include/asm/arch-am33xx/mem-guardian.h
new file mode 100644
index 0000000..e864a0f
--- /dev/null
+++ b/arch/arm/include/asm/arch-am33xx/mem-guardian.h
@@ -0,0 +1,63 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * (C) Copyright 2006-2008
+ * Texas Instruments, <www.ti.com>
+ *
+ * (C) Copyright 2020
+ * Robert Bosch Power Tools GmbH
+ *
+ * Author
+ * Moses Christopher <BollavarapuMoses.Christopher@in.bosch.com>
+ *
+ * Copied from:
+ * arch/arm/include/asm/arch-am33xx/mem.h
+ *
+ * Initial Code from:
+ * Mansoor Ahamed <mansoor.ahamed@ti.com>
+ * Richard Woodruff <r-woodruff2@ti.com>
+ */
+
+#ifndef _MEM_GUARDIAN_H_
+#define _MEM_GUARDIAN_H_
+
+/*
+ * GPMC settings -
+ * Definitions is as per the following format
+ * #define <PART>_GPMC_CONFIG<x> <value>
+ * Where:
+ * PART is the part name e.g. M_NAND - Micron Nand Flash
+ * x is GPMC config registers from 1 to 7 (there will be 7 macros)
+ * Value is corresponding value
+ *
+ * For every valid PRCM configuration there should be only one definition of
+ * the same.
+ *
+ * The following values are optimized for improving the NAND Read speed
+ * They are applicable and tested for Bosch Guardian Board.
+ * Read Speeds rose from 1.5MiBs to over 7.6MiBs
+ *
+ * Currently valid part Names are (PART):
+ * M_NAND - Micron NAND
+ */
+#define GPMC_SIZE_256M 0x0
+#define GPMC_SIZE_128M 0x8
+#define GPMC_SIZE_64M 0xC
+#define GPMC_SIZE_32M 0xE
+#define GPMC_SIZE_16M 0xF
+
+#define M_NAND_GPMC_CONFIG1 0x00000800
+#define M_NAND_GPMC_CONFIG2 0x00030300
+#define M_NAND_GPMC_CONFIG3 0x00030300
+#define M_NAND_GPMC_CONFIG4 0x02000201
+#define M_NAND_GPMC_CONFIG5 0x00030303
+#define M_NAND_GPMC_CONFIG6 0x000000C0
+#define M_NAND_GPMC_CONFIG7 0x00000008
+
+/* max number of GPMC Chip Selects */
+#define GPMC_MAX_CS 8
+/* max number of GPMC regs */
+#define GPMC_MAX_REG 7
+
+#define DBG_MPDB 6
+
+#endif /* endif _MEM_GUARDIAN_H_ */
diff --git a/arch/arm/mach-omap2/am33xx/board.c b/arch/arm/mach-omap2/am33xx/board.c
index 62178f1..4bf0535 100644
--- a/arch/arm/mach-omap2/am33xx/board.c
+++ b/arch/arm/mach-omap2/am33xx/board.c
@@ -23,7 +23,11 @@
#include <asm/arch/clock.h>
#include <asm/arch/gpio.h>
#include <asm/arch/i2c.h>
+#if IS_ENABLED(CONFIG_TARGET_AM335X_GUARDIAN)
+#include <asm/arch/mem-guardian.h>
+#else
#include <asm/arch/mem.h>
+#endif
#include <asm/arch/mmc_host_def.h>
#include <asm/arch/sys_proto.h>
#include <asm/global_data.h>
diff --git a/arch/arm/mach-omap2/mem-common.c b/arch/arm/mach-omap2/mem-common.c
index 50d5f3e..2dcf0cf 100644
--- a/arch/arm/mach-omap2/mem-common.c
+++ b/arch/arm/mach-omap2/mem-common.c
@@ -15,7 +15,11 @@
#include <common.h>
#include <asm/io.h>
#include <asm/arch/cpu.h>
+#if IS_ENABLED(CONFIG_TARGET_AM335X_GUARDIAN)
+#include <asm/arch/mem-guardian.h>
+#else
#include <asm/arch/mem.h>
+#endif
#include <asm/arch/sys_proto.h>
#include <command.h>
#include <linux/mtd/omap_gpmc.h>