From: Alison Wang <b18965@freescale.com>
Date: Fri, 17 Oct 2014 07:26:33 +0000 (+0800)
Subject: arm: ls102xa: Remove bit reversing for SCFG registers
X-Git-Tag: v2015.01-rc3~51^2~3
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=c207ff612903389f8b32e377fe32be43e6efd8f7;p=oweals%2Fu-boot.git

arm: ls102xa: Remove bit reversing for SCFG registers

SCFG_SCFGREVCR is SCFG bit reverse register. This register
must be written with 0xFFFFFFFF before writing to any other
SCFG register. Then other SCFG register could be written in
big-endian mode.

Address: 157_0000h base + 200h offset = 157_0200h
Bit   0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15|16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
W/R                                   SCFGREV
Reset 0 0 0 0 0 0 0 0 0 0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0
0-31
SCFGREV SCFG Bit Reverse Control Filed
32'h 0000_0000 - No bit reverse is applied
32'h FFFF_FFFF - Bit reverse is applied; so 31:0 will be stored/read as
0:31

This patch removes the bit reversing for SCFG registers in
u-boot. It will be implemented through PBI commands in RCW
.pbi
write 0x570200, 0xffffffff
.end
So other SCFG register could be written in big-endian mode
in u-boot or kernel directly.

Signed-off-by: Alison Wang <alison.wang@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
---

diff --git a/arch/arm/include/asm/arch-ls102xa/immap_ls102xa.h b/arch/arm/include/asm/arch-ls102xa/immap_ls102xa.h
index 9f4fbba38f..b0c267cfc2 100644
--- a/arch/arm/include/asm/arch-ls102xa/immap_ls102xa.h
+++ b/arch/arm/include/asm/arch-ls102xa/immap_ls102xa.h
@@ -95,8 +95,6 @@ struct ccsr_gur {
 	u32	sdhcpcr;
 };
 
-#define SCFG_SCFGREVCR_REV		0xffffffff
-#define SCFG_SCFGREVCR_NOREV		0
 #define SCFG_ETSECDMAMCR_LE_BD_FR	0xf8001a0f
 #define SCFG_ETSECCMCR_GE2_CLK125	0x04000000
 #define SCFG_PIXCLKCR_PXCKEN		0x80000000
diff --git a/board/freescale/ls1021aqds/ls1021aqds.c b/board/freescale/ls1021aqds/ls1021aqds.c
index 5154a85b2d..913dda92c5 100644
--- a/board/freescale/ls1021aqds/ls1021aqds.c
+++ b/board/freescale/ls1021aqds/ls1021aqds.c
@@ -140,9 +140,7 @@ int board_early_init_f(void)
 	struct ccsr_cci400 *cci = (struct ccsr_cci400 *)CONFIG_SYS_CCI400_ADDR;
 
 #ifdef CONFIG_TSEC_ENET
-	out_be32(&scfg->scfgrevcr, SCFG_SCFGREVCR_REV);
 	out_be32(&scfg->etsecdmamcr, SCFG_ETSECDMAMCR_LE_BD_FR);
-	out_be32(&scfg->scfgrevcr, SCFG_SCFGREVCR_NOREV);
 #endif
 
 #ifdef CONFIG_FSL_IFC
diff --git a/board/freescale/ls1021atwr/ls1021atwr.c b/board/freescale/ls1021atwr/ls1021atwr.c
index 3e8981b39f..3f2dc1acad 100644
--- a/board/freescale/ls1021atwr/ls1021atwr.c
+++ b/board/freescale/ls1021atwr/ls1021atwr.c
@@ -255,11 +255,8 @@ int board_early_init_f(void)
 	struct ccsr_scfg *scfg = (struct ccsr_scfg *)CONFIG_SYS_FSL_SCFG_ADDR;
 
 #ifdef CONFIG_TSEC_ENET
-	out_be32(&scfg->scfgrevcr, SCFG_SCFGREVCR_REV);
 	out_be32(&scfg->etsecdmamcr, SCFG_ETSECDMAMCR_LE_BD_FR);
 	out_be32(&scfg->etsecmcr, SCFG_ETSECCMCR_GE2_CLK125);
-	udelay(10);
-	out_be32(&scfg->scfgrevcr, SCFG_SCFGREVCR_NOREV);
 #endif
 
 #ifdef CONFIG_FSL_IFC
@@ -267,9 +264,7 @@ int board_early_init_f(void)
 #endif
 
 #ifdef CONFIG_FSL_DCU_FB
-	out_be32(&scfg->scfgrevcr, SCFG_SCFGREVCR_REV);
 	out_be32(&scfg->pixclkcr, SCFG_PIXCLKCR_PXCKEN);
-	out_be32(&scfg->scfgrevcr, SCFG_SCFGREVCR_NOREV);
 #endif
 
 	return 0;