powerpc/t4qds: Fix disabling remote I2C connection
Only clear IRE bit in qixis brdcfg5 register and keep other bits
unchanged.
Signed-off-by: Ed Swarthout <Ed.Swarthout@freescale.com>
Signed-off-by: York Sun <yorksun@freescale.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
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 a84218c..be6d1c4 100644
--- a/board/freescale/t4qds/t4qds.c
+++ b/board/freescale/t4qds/t4qds.c
@@ -504,8 +504,8 @@
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