[U-Boot] [PATCH v1 1/2] imx: fix USB boot mode detection for i.MX 6UL and 6ULL

[Stefan Agner <stefan@agner.ch>]

From: Stefan Agner <stefan.agner@toradex.com>

Add the reserved boot mode used in the bmode command for i.MX 6UL
and 6ULL as introduced in commit 3fd9579085fa ("imx: mx6ull: fix USB
bmode for i.MX 6UL and 6ULL").

Also replace BMODE_UART with BMODE_RESERVED, which is more appropriate.
Commit 96aac843b68d ("imx: Use IMX6_BMODE_* macros instead of numericals")
added macros for boot modes, in the process the reserved boot mode got
named BMODE_UART. We use the reserved boot mode in the bmode command to
let the boot ROM enter serial downloader recovery mode. But this is only
a side effect, the actual boot mode is reserved...

Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
---
Afaik there is no board yet using SPL on 6UL/ULL...

 arch/arm/include/asm/mach-imx/sys_proto.h | 7 ++++++-
 arch/arm/mach-imx/spl.c                   | 2 +-
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/arch/arm/include/asm/mach-imx/sys_proto.h b/arch/arm/include/asm/mach-imx/sys_proto.h
index 046df6291a..d94c095118 100644
--- a/arch/arm/include/asm/mach-imx/sys_proto.h
+++ b/arch/arm/include/asm/mach-imx/sys_proto.h
@@ -69,8 +69,13 @@ enum imx6_bmode_emi {
 
 enum imx6_bmode {
 	IMX6_BMODE_EMI,
-	IMX6_BMODE_UART,
+#if defined(CONFIG_MX6UL) || defined(CONFIG_MX6ULL)
+	IMX6_BMODE_QSPI,
+	IMX6_BMODE_RESERVED,
+#else
+	IMX6_BMODE_RESERVED,
 	IMX6_BMODE_SATA,
+#endif
 	IMX6_BMODE_SERIAL_ROM,
 	IMX6_BMODE_SD,
 	IMX6_BMODE_ESD,
diff --git a/arch/arm/mach-imx/spl.c b/arch/arm/mach-imx/spl.c
index 75698c48ea..836b334fa9 100644
--- a/arch/arm/mach-imx/spl.c
+++ b/arch/arm/mach-imx/spl.c
@@ -42,7 +42,7 @@ u32 spl_boot_device(void)
 		break;
 		}
 	/* Reserved: Used to force Serial Downloader */
-	case IMX6_BMODE_UART:
+	case IMX6_BMODE_RESERVED:
 		return BOOT_DEVICE_UART;
 	/* SATA: See 8.5.4, Table 8-20 */
 	case IMX6_BMODE_SATA:
-- 
2.14.1