Patchwork [U-Boot,v2,batch,3,15/17] powerpc/t4qds: Fix disabling remote I2C connection

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Submitter York Sun
Date March 25, 2013, 5:39 p.m.
Message ID <1364233180-31149-15-git-send-email-yorksun@freescale.com>
Download mbox | patch
Permalink /patch/230856/
State Accepted, archived
Delegated to: Andy Fleming
Headers show

Comments

York Sun - March 25, 2013, 5:39 p.m.
From: Ed Swarthout <Ed.Swarthout@freescale.com>

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>
---
 board/freescale/t4qds/t4240qds_qixis.h |    2 +-
 board/freescale/t4qds/t4qds.c          |    4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

Patch

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 c1bb8bf..d521008 100644
--- a/board/freescale/t4qds/t4qds.c
+++ b/board/freescale/t4qds/t4qds.c
@@ -504,8 +504,8 @@  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