[U-Boot] [PATCH 15/21] powerpc/t4qds: Fix disabling remote I2C connection

[York Sun]

From: Ed Swarthout <Ed.Swarthout at freescale.com>

Only clear IRE bit in qixis brdcfg5 register and keep other bits
unchanged.

Signed-off-by: Ed Swarthout <Ed.Swarthout at freescale.com>
Signed-off-by: York Sun <yorksun at freescale.com>
---
 board/freescale/t4qds/t4240qds_qixis.h |    2 +-
 board/freescale/t4qds/t4qds.c          |    4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/board/freescale/t4qds/t4240qds_qixis.h b/board/freescale/t4qds/t4240qds_qixis.h
index efb718d..485353d 100644
--- a/board/freescale/t4qds/t4240qds_qixis.h
+++ b/board/freescale/t4qds/t4240qds_qixis.h
@@ -42,7 +42,7 @@
 #define QIXIS_DDRCLK_125		0x2
 #define QIXIS_DDRCLK_133		0x3
 
-#define BRDCFG5_RESET			0x00
+#define BRDCFG5_IRE			0x20	/* i2c Remote i2c1 enable */
 
 #define BRDCFG12_SD3EN_MASK		0x20
 #define BRDCFG12_SD3MX_MASK		0x08
diff --git a/board/freescale/t4qds/t4qds.c b/board/freescale/t4qds/t4qds.c
index 06243b3..2f4575b 100644
--- a/board/freescale/t4qds/t4qds.c
+++ b/board/freescale/t4qds/t4qds.c
@@ -505,8 +505,8 @@ int board_early_init_r(void)
 	setup_portals();
 #endif
 
-	/* Disable remote I2C connectoin */
-	QIXIS_WRITE(brdcfg[5], BRDCFG5_RESET);
+	/* Disable remote I2C connection to qixis fpga */
+	QIXIS_WRITE(brdcfg[5], QIXIS_READ(brdcfg[5]) & ~BRDCFG5_IRE);
 
 	/*
 	 * Adjust core voltage according to voltage ID
-- 
1.7.9.5