ppc/8xxx: Remove ddr_pd_cntl register since it doesn't exist

The ddr_pd_cntl isn't defined in any reference manual and thus we wil
remove especially since we set it to 0, which would most likely be its
POR value.
Signed-off-by: NKumar Gala <galak@kernel.crashing.org>

board/freescale/p1_p2_rdb/ddr.c

@@ -43,7 +43,6 @@ extern void fsl_ddr_set_memctl_regs(const fsl_ddr_cfg_regs_t *regs,
 #define CONFIG_SYS_DDR_MODE_CONTROL	0x00000000
 #define CONFIG_SYS_DDR_ZQ_CONTROL	0x00000000
 #define CONFIG_SYS_DDR_WRLVL_CONTROL	0x00000000
-#define CONFIG_SYS_DDR_PD_CONTROL	0x00000000
 #define CONFIG_SYS_DDR_SR_CNTR		0x00000000
 #define CONFIG_SYS_DDR_RCW_1		0x00000000
 #define CONFIG_SYS_DDR_RCW_2		0x00000000
@@ -110,7 +109,6 @@ fsl_ddr_cfg_regs_t ddr_cfg_regs_400 = {
 	.timing_cfg_5 = CONFIG_SYS_DDR_TIMING_5,
 	.ddr_zq_cntl = CONFIG_SYS_DDR_ZQ_CONTROL,
 	.ddr_wrlvl_cntl = CONFIG_SYS_DDR_WRLVL_CONTROL,
-	.ddr_pd_cntl = CONFIG_SYS_DDR_PD_CONTROL,
 	.ddr_sr_cntr = CONFIG_SYS_DDR_SR_CNTR,
 	.ddr_sdram_rcw_1 = CONFIG_SYS_DDR_RCW_1,
 	.ddr_sdram_rcw_2 = CONFIG_SYS_DDR_RCW_2
@@ -138,7 +136,6 @@ fsl_ddr_cfg_regs_t ddr_cfg_regs_533 = {
 	.timing_cfg_5 = CONFIG_SYS_DDR_TIMING_5,
 	.ddr_zq_cntl = CONFIG_SYS_DDR_ZQ_CONTROL,
 	.ddr_wrlvl_cntl = CONFIG_SYS_DDR_WRLVL_CONTROL,
-	.ddr_pd_cntl = CONFIG_SYS_DDR_PD_CONTROL,
 	.ddr_sr_cntr = CONFIG_SYS_DDR_SR_CNTR,
 	.ddr_sdram_rcw_1 = CONFIG_SYS_DDR_RCW_1,
 	.ddr_sdram_rcw_2 = CONFIG_SYS_DDR_RCW_2
@@ -166,7 +163,6 @@ fsl_ddr_cfg_regs_t ddr_cfg_regs_667 = {
 	.timing_cfg_5 = CONFIG_SYS_DDR_TIMING_5,
 	.ddr_zq_cntl = CONFIG_SYS_DDR_ZQ_CONTROL,
 	.ddr_wrlvl_cntl = CONFIG_SYS_DDR_WRLVL_CONTROL,
-	.ddr_pd_cntl = CONFIG_SYS_DDR_PD_CONTROL,
 	.ddr_sr_cntr = CONFIG_SYS_DDR_SR_CNTR,
 	.ddr_sdram_rcw_1 = CONFIG_SYS_DDR_RCW_1,
 	.ddr_sdram_rcw_2 = CONFIG_SYS_DDR_RCW_2
@@ -194,7 +190,6 @@ fsl_ddr_cfg_regs_t ddr_cfg_regs_800 = {
 	.timing_cfg_5 = CONFIG_SYS_DDR_TIMING_5,
 	.ddr_zq_cntl = CONFIG_SYS_DDR_ZQ_CONTROL,
 	.ddr_wrlvl_cntl = CONFIG_SYS_DDR_WRLVL_CONTROL,
-	.ddr_pd_cntl = CONFIG_SYS_DDR_PD_CONTROL,
 	.ddr_sr_cntr = CONFIG_SYS_DDR_SR_CNTR,
 	.ddr_sdram_rcw_1 = CONFIG_SYS_DDR_RCW_1,
 	.ddr_sdram_rcw_2 = CONFIG_SYS_DDR_RCW_2

cpu/mpc85xx/ddr-gen3.c

@@ -74,7 +74,6 @@ void fsl_ddr_set_memctl_regs(const fsl_ddr_cfg_regs_t *regs,
 	out_be32(&ddr->timing_cfg_5, regs->timing_cfg_5);
 	out_be32(&ddr->ddr_zq_cntl, regs->ddr_zq_cntl);
 	out_be32(&ddr->ddr_wrlvl_cntl, regs->ddr_wrlvl_cntl);
-	out_be32(&ddr->ddr_pd_cntl, regs->ddr_pd_cntl);
 	out_be32(&ddr->ddr_sr_cntr, regs->ddr_sr_cntr);
 	out_be32(&ddr->ddr_sdram_rcw_1, regs->ddr_sdram_rcw_1);
 	out_be32(&ddr->ddr_sdram_rcw_2, regs->ddr_sdram_rcw_2);

cpu/mpc8xxx/ddr/ctrl_regs.c

@@ -1066,28 +1066,6 @@ static void set_ddr_sr_cntr(fsl_ddr_cfg_regs_t *ddr, unsigned int sr_it)
 	ddr->ddr_sr_cntr = (sr_it & 0xF) << 16;
 }
 
-/* DDR Pre-Drive Conditioning Control (DDR_PD_CNTL) */
-static void set_ddr_pd_cntl(fsl_ddr_cfg_regs_t *ddr)
-{
-	/* Termination value during pre-drive conditioning */
-	unsigned int tvpd = 0;
-	unsigned int pd_en = 0;		/* Pre-Drive Conditioning Enable */
-	unsigned int pdar = 0;		/* Pre-Drive After Read */
-	unsigned int pdaw = 0;		/* Pre-Drive After Write */
-	unsigned int pd_on = 0;		/* Pre-Drive Conditioning On */
-	unsigned int pd_off = 0;	/* Pre-Drive Conditioning Off */
-
-	ddr->ddr_pd_cntl = (0
-			    | ((pd_en & 0x1) << 31)
-			    | ((tvpd & 0x7) << 28)
-			    | ((pdar & 0x7F) << 20)
-			    | ((pdaw & 0x7F) << 12)
-			    | ((pd_on & 0x1F) << 6)
-			    | ((pd_off & 0x1F) << 0)
-			    );
-}
-
-
 /* DDR SDRAM Register Control Word 1 (DDR_SDRAM_RCW_1) */
 static void set_ddr_sdram_rcw_1(fsl_ddr_cfg_regs_t *ddr)
 {
@@ -1355,7 +1333,6 @@ compute_fsl_memctl_config_regs(const memctl_options_t *popts,
 	set_ddr_zq_cntl(ddr, zq_en);
 	set_ddr_wrlvl_cntl(ddr, wrlvl_en);
 
-	set_ddr_pd_cntl(ddr);
 	set_ddr_sr_cntr(ddr, sr_it);
 
 	set_ddr_sdram_rcw_1(ddr);

include/asm-ppc/fsl_ddr_sdram.h

@@ -110,7 +110,6 @@ typedef struct fsl_ddr_cfg_regs_s {
 	unsigned int timing_cfg_5;
 	unsigned int ddr_zq_cntl;
 	unsigned int ddr_wrlvl_cntl;
-	unsigned int ddr_pd_cntl;
 	unsigned int ddr_sr_cntr;
 	unsigned int ddr_sdram_rcw_1;
 	unsigned int ddr_sdram_rcw_2;

include/asm-ppc/immap_85xx.h

@@ -132,7 +132,7 @@ typedef struct ccsr_ddr {
 	char	reg8_1a[8];
 	uint	ddr_zq_cntl;		/* 0x2170 - DDR ZQ calibration control*/
 	uint	ddr_wrlvl_cntl;		/* 0x2174 - DDR write leveling control*/
-	uint	ddr_pd_cntl;		/* 0x2178 - DDR pre-drive conditioning control*/
+	char	reg8_1aa[4];
 	uint	ddr_sr_cntr;		/* 0x217C - DDR self refresh counter */
 	uint	ddr_sdram_rcw_1;	/* 0x2180 - DDR Register Control Words 1 */
 	uint	ddr_sdram_rcw_2;	/* 0x2184 - DDR Register Control Words 2 */