From 25afe55de592f7b021d114d36c9ae3ae6c3bc01b Mon Sep 17 00:00:00 2001
From: Lokesh Vutla <lokeshvutla@ti.com>
Date: Tue, 8 Mar 2016 09:18:05 +0530
Subject: [PATCH] ARM: DRA7: Enable EEPROM support

Enable EEPROM support for DRA74-evm.

Acked-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
---
 arch/arm/cpu/armv7/omap5/Kconfig |  1 +
 board/ti/dra7xx/Kconfig          |  3 ++
 board/ti/dra7xx/evm.c            | 59 +++++++++++++++++++++++++++++++++++++---
 include/configs/dra7xx_evm.h     |  4 +++
 4 files changed, 63 insertions(+), 4 deletions(-)

diff --git a/arch/arm/cpu/armv7/omap5/Kconfig b/arch/arm/cpu/armv7/omap5/Kconfig
index f265b34..026bf24 100644
--- a/arch/arm/cpu/armv7/omap5/Kconfig
+++ b/arch/arm/cpu/armv7/omap5/Kconfig
@@ -12,6 +12,7 @@ config TARGET_OMAP5_UEVM
 
 config TARGET_DRA7XX_EVM
 	bool "TI DRA7XX"
+	select TI_I2C_BOARD_DETECT
 
 config TARGET_BEAGLE_X15
 	bool "BeagleBoard X15"
diff --git a/board/ti/dra7xx/Kconfig b/board/ti/dra7xx/Kconfig
index 80341d9..b642113 100644
--- a/board/ti/dra7xx/Kconfig
+++ b/board/ti/dra7xx/Kconfig
@@ -17,4 +17,7 @@ config CONS_INDEX
 	  The DRA7xx (and AM57x) SoC has a total of 6 UARTs available to it.
 	  Depending on your specific board you may want something other than UART1
 	  here.
+
+source "board/ti/common/Kconfig"
+
 endif
diff --git a/board/ti/dra7xx/evm.c b/board/ti/dra7xx/evm.c
index eebec88..a47122b 100644
--- a/board/ti/dra7xx/evm.c
+++ b/board/ti/dra7xx/evm.c
@@ -13,6 +13,7 @@
 #include <common.h>
 #include <palmas.h>
 #include <sata.h>
+#include <linux/string.h>
 #include <asm/gpio.h>
 #include <usb.h>
 #include <linux/usb/gadget.h>
@@ -27,6 +28,11 @@
 #include <ti-usb-phy-uboot.h>
 
 #include "mux_data.h"
+#include "../common/board_detect.h"
+
+#define board_is_dra74x_evm()		board_ti_is("5777xCPU")
+#define board_is_dra74x_revh_or_later() board_is_dra74x_evm() &&	\
+				(strncmp("H", board_ti_get_rev(), 1) <= 0)
 
 #ifdef CONFIG_DRIVER_TI_CPSW
 #include <cpsw.h>
@@ -37,8 +43,10 @@ DECLARE_GLOBAL_DATA_PTR;
 /* GPIO 7_11 */
 #define GPIO_DDR_VTT_EN 203
 
+#define SYSINFO_BOARD_NAME_MAX_LEN	37
+
 const struct omap_sysinfo sysinfo = {
-	"Board: DRA7xx\n"
+	"Board: UNKNOWN(DRA7 EVM) REV UNKNOWN\n"
 };
 
 /**
@@ -57,16 +65,59 @@ int board_init(void)
 int board_late_init(void)
 {
 #ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
-	if (omap_revision() == DRA722_ES1_0)
-		setenv("board_name", "dra72x");
+	char *name = "unknown";
+
+	if (is_dra72x())
+		name = "dra72x";
 	else
-		setenv("board_name", "dra7xx");
+		name = "dra7xx";
+
+	set_board_info_env(name);
 
 	omap_die_id_serial();
 #endif
 	return 0;
 }
 
+#ifdef CONFIG_SPL_BUILD
+void do_board_detect(void)
+{
+	int rc;
+
+	rc = ti_i2c_eeprom_dra7_get(CONFIG_EEPROM_BUS_ADDRESS,
+				    CONFIG_EEPROM_CHIP_ADDRESS);
+	if (rc)
+		printf("ti_i2c_eeprom_init failed %d\n", rc);
+}
+
+#else
+
+void do_board_detect(void)
+{
+	char *bname = NULL;
+	int rc;
+
+	rc = ti_i2c_eeprom_dra7_get(CONFIG_EEPROM_BUS_ADDRESS,
+				    CONFIG_EEPROM_CHIP_ADDRESS);
+	if (rc)
+		printf("ti_i2c_eeprom_init failed %d\n", rc);
+
+	if (board_is_dra74x_evm()) {
+		bname = "DRA74x EVM";
+	/* If EEPROM is not populated */
+	} else {
+		if (is_dra72x())
+			bname = "DRA72x EVM";
+		else
+			bname = "DRA74x EVM";
+	}
+
+	if (bname)
+		snprintf(sysinfo.board_string, SYSINFO_BOARD_NAME_MAX_LEN,
+			 "Board: %s REV %s\n", bname, board_ti_get_rev());
+}
+#endif	/* CONFIG_SPL_BUILD */
+
 void set_muxconf_regs_essential(void)
 {
 	do_set_mux32((*ctrl)->control_padconf_core_base,
diff --git a/include/configs/dra7xx_evm.h b/include/configs/dra7xx_evm.h
index 0196280..e79250b 100644
--- a/include/configs/dra7xx_evm.h
+++ b/include/configs/dra7xx_evm.h
@@ -341,4 +341,8 @@
 #endif
 #endif  /* NOR support */
 
+/* EEPROM */
+#define CONFIG_EEPROM_CHIP_ADDRESS 0x50
+#define CONFIG_EEPROM_BUS_ADDRESS 0
+
 #endif /* __CONFIG_DRA7XX_EVM_H */