omap3_logic: Add Device Tree Support and more DM drivers

This patch also removes all the excessive code for NS16550 intiailization
as the device tree can do that now.  This also adds DM_I2C and DM_MMC
since the overlying drivers have the built-in support already.  The
corresponding include/config/omap3_logic.h also reduced in size
due to the new device tree support.

Signed-off-by: Adam Ford <aford173@gmail.com>

Changes in V2:
  Retain Auto-detect ability between SOM-LV and Torpedo
  Split this off from the device sub submissions

arch/arm/dts/Makefile

@@ -373,6 +373,10 @@ dtb-$(CONFIG_TARGET_AT91SAM9X5EK) += \
 
 dtb-$(CONFIG_TARGET_AT91SAM9N12EK) += at91sam9n12ek.dtb
 
+dtb-$(CONFIG_TARGET_OMAP3_LOGIC) += \
+	logicpd-torpedo-37xx-devkit.dtb \
+	logicpd-som-lv-37xx-devkit.dts
+
 dtb-$(CONFIG_TARGET_SAMA5D2_XPLAINED) += \
 	at91-sama5d2_xplained.dtb
 

board/logicpd/omap3som/README

@@ -0,0 +1,19 @@
+Summary
+=======
+
+The source for omap3som encompases the DM3730 SOM-LV and DM3730 Torpedo platforms.
+
+By default, the Torpedo Device Tree is integrated into U-Boot,but the MMC controller, GPIO and I2C controllers are the same, so for the purposes of loading U-Boot, it should be sufficient.  However this will display the Model as "LogicPD Zoom DM3730 Torpedo + Wireless Development Kit" upon boot.
+
+The actual board remains autodetected and the Board will read "DM37xx SOM LV" when used on the DM37 SOM-LV.  The device tree loaded with Linux is also correct.
+
+Integrating the SOM-LV Device Tree into U-Boot
+==============================================
+
+This step is optional, but should you want to change the default to the SOM-LV, locate the configs/omap3_logic_defconfig file and make the following change.
+
+  CONFIG_DEFAULT_DEVICE_TREE="logicpd-som-lv-37xx-devkit"
+
+  make distclean
+  make omap3_logic_defconfig
+

board/logicpd/omap3som/omap3logic.c

@@ -36,16 +36,8 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
-#define CONTROL_WKUP_CTRL	0x48002a5c
-#define GPIO_IO_PWRDNZ	(1 << 6)
-#define PBIASLITEVMODE1	(1 << 8)
-
-/*
- * two dimensional array of strucures containining board name and Linux
- * machine IDs; row it selected based on CPU column is slected based
- * on hsusb0_data5 pin having a pulldown resistor
- */
-
+/* This is only needed until SPL gets OF support */
+#ifdef CONFIG_SPL_BUILD
 static const struct ns16550_platdata omap3logic_serial = {
 	.base = OMAP34XX_UART1,
 	.reg_shift = 2,
@@ -57,7 +49,13 @@ U_BOOT_DEVICE(omap3logic_uart) = {
 	"ns16550_serial",
 	&omap3logic_serial
 };
+#endif
 
+/*
+ * two dimensional array of strucures containining board name and Linux
+ * machine IDs; row it selected based on CPU column is slected based
+ * on hsusb0_data5 pin having a pulldown resistor
+ */
 static struct board_id {
 	char *name;
 	int machine_id;

configs/omap3_logic_defconfig

@@ -4,6 +4,8 @@ CONFIG_SYS_MALLOC_F_LEN=0x2000
 CONFIG_OMAP34XX=y
 CONFIG_TARGET_OMAP3_LOGIC=y
 CONFIG_SPL_STACK_R_ADDR=0x82000000
+CONFIG_DEFAULT_DEVICE_TREE="logicpd-torpedo-37xx-devkit"
+CONFIG_FIT=y
 CONFIG_SYS_EXTRA_OPTIONS="NAND"
 CONFIG_SYS_CONSOLE_INFO_QUIET=y
 CONFIG_VERSION_VARIABLE=y
@@ -37,6 +39,11 @@ CONFIG_CMD_FS_GENERIC=y
 CONFIG_CMD_UBI=y
 CONFIG_ISO_PARTITION=y
 CONFIG_EFI_PARTITION=y
+CONFIG_OF_CONTROL=y
+# CONFIG_BLK is not set
+CONFIG_DM_I2C=y
+CONFIG_DM_MMC=y
+# CONFIG_DM_MMC_OPS is not set
 CONFIG_MMC_OMAP_HS=y
 CONFIG_MMC_OMAP36XX_PINS=y
 CONFIG_SYS_NS16550=y
@@ -47,4 +54,3 @@ CONFIG_USB_GADGET_DOWNLOAD=y
 CONFIG_G_DNL_MANUFACTURER="TI"
 CONFIG_G_DNL_VENDOR_NUM=0x0451
 CONFIG_G_DNL_PRODUCT_NUM=0xd022
-CONFIG_OF_LIBFDT=y

include/configs/omap3_logic.h

@@ -17,12 +17,28 @@
 
 #include <configs/ti_omap3_common.h>
 
+#ifdef CONFIG_SPL_BUILD
+/*
+ * Disable MMC DM for SPL build and can be re-enabled after adding
+ * DM support in SPL
+ */
+#undef CONFIG_DM_MMC
+#undef OMAP_HSMMC_USE_GPIO
+
+/* select serial console configuration for SPL */
+#undef CONFIG_CONS_INDEX
+#define CONFIG_CONS_INDEX              1
+#define CONFIG_SYS_NS16550_COM1                OMAP34XX_UART1
+#endif
+
+
 /*
  * We are only ever GP parts and will utilize all of the "downloaded image"
  * area in SRAM which starts at 0x40200000 and ends at 0x4020FFFF (64KB) in
  * order to allow for BCH8 to fit in.
  */
 #undef CONFIG_SPL_TEXT_BASE
+#define CONFIG_SPL_FRAMEWORK
 #define CONFIG_SPL_TEXT_BASE		0x40200000
 
 #define CONFIG_MISC_INIT_R		/* misc_init_r dumps the die id */
@@ -34,16 +50,11 @@
 /* Hardware drivers */
 
 /* GPIO banks */
+#define CONFIG_OMAP3_GPIO_4		/* GPIO 96..128 is in GPIO bank 4 */
 #define CONFIG_OMAP3_GPIO_6		/* GPIO160..191 is in GPIO bank 6 */
 
 #define CONFIG_USB_OMAP3
 
-/* select serial console configuration */
-#undef CONFIG_CONS_INDEX
-#define CONFIG_CONS_INDEX		1
-#define CONFIG_SYS_NS16550_COM1		OMAP34XX_UART1
-#define CONFIG_SERIAL1			1	/* UART1 on OMAP Logic boards */
-
 /* commands to include */
 #define CONFIG_CMD_NAND
 #define CONFIG_CMD_MTDPARTS
@@ -52,8 +63,6 @@
 /* I2C */
 #define CONFIG_SYS_I2C_OMAP34XX
 #define CONFIG_SYS_I2C_EEPROM_ADDR	0x50	/* EEPROM AT24C64      */
-#define EXPANSION_EEPROM_I2C_BUS	2	/* I2C Bus for AT24C64 */
-#define CONFIG_OMAP3_LOGIC_USE_NEW_PRODUCT_ID
 
 /* USB */
 #define CONFIG_USB_MUSB_OMAP2PLUS