bfin: reorg clock init steps for bf609

So that user can set the clocks through menuconfig.

Signed-off-by: Bob Liu <lliubbo@gmail.com>

4 files changed, 224 insertions, 133 deletions

diff --git a/arch/blackfin/Kconfig b/arch/blackfin/Kconfig
index 2baa493..f9f6f69 100644
--- a/arch/blackfin/Kconfig
+++ b/arch/blackfin/Kconfig
@@ -352,6 +352,11 @@ config MEM_MT48H32M16LFCJ_75
 	depends on (BFIN526_EZBRD)
 	default y
 
+config MEM_MT47H64M16
+	bool
+	depends on (BFIN609_EZKIT)
+	default y
+
 source "arch/blackfin/mach-bf518/Kconfig"
 source "arch/blackfin/mach-bf527/Kconfig"
 source "arch/blackfin/mach-bf533/Kconfig"
diff --git a/arch/blackfin/include/asm/mem_init.h b/arch/blackfin/include/asm/mem_init.h
index 2375799..f019e9b 100644
--- a/arch/blackfin/include/asm/mem_init.h
+++ b/arch/blackfin/include/asm/mem_init.h
@@ -6,6 +6,9 @@
  * Licensed under the GPL-2 or later.
  */
 
+#ifndef __MEM_INIT_H__
+#define __MEM_INIT_H__
+
 #if defined(EBIU_SDGCTL)
 #if defined(CONFIG_MEM_MT48LC16M16A2TG_75) || \
     defined(CONFIG_MEM_MT48LC64M4A2FB_7E) || \
@@ -277,3 +280,212 @@
 #else
 #define PLL_BYPASS       0
 #endif
+
+#ifdef CONFIG_BF60x
+
+/* DMC status bits */
+#define IDLE			0x1
+#define MEMINITDONE		0x4
+#define SRACK			0x8
+#define PDACK			0x10
+#define DPDACK			0x20
+#define DLLCALDONE		0x2000
+#define PENDREF			0xF0000
+#define PHYRDPHASE		0xF00000
+#define PHYRDPHASE_OFFSET	20
+
+/* DMC control bits */
+#define LPDDR			0x2
+#define INIT			0x4
+#define	SRREQ			0x8
+#define PDREQ			0x10
+#define DPDREQ			0x20
+#define PREC			0x40
+#define ADDRMODE		0x100
+#define RDTOWR			0xE00
+#define PPREF			0x1000
+#define DLLCAL			0x2000
+
+/* DMC DLL control bits */
+#define DLLCALRDCNT		0xFF
+#define DATACYC			0xF00
+#define DATACYC_OFFSET		8
+
+/* CGU Divisor bits */
+#define CSEL_OFFSET		0
+#define S0SEL_OFFSET		5
+#define SYSSEL_OFFSET		8
+#define S1SEL_OFFSET		13
+#define DSEL_OFFSET		16
+#define OSEL_OFFSET		22
+#define ALGN			0x20000000
+#define UPDT			0x40000000
+#define LOCK			0x80000000
+
+/* CGU Status bits */
+#define PLLEN			0x1
+#define PLLBP			0x2
+#define PLOCK			0x4
+#define CLKSALGN		0x8
+
+/* CGU Control bits */
+#define MSEL_MASK		0x7F00
+#define DF_MASK			0x1
+
+struct ddr_config {
+	u32 ddr_clk;
+	u32 dmc_ddrctl;
+	u32 dmc_ddrcfg;
+	u32 dmc_ddrtr0;
+	u32 dmc_ddrtr1;
+	u32 dmc_ddrtr2;
+	u32 dmc_ddrmr;
+	u32 dmc_ddrmr1;
+};
+
+#if defined(CONFIG_MEM_MT47H64M16)
+static struct ddr_config ddr_config_table[] __attribute__((section(".data_l1"))) = {
+	[0] = {
+		.ddr_clk    = 125,
+		.dmc_ddrctl = 0x00000904,
+		.dmc_ddrcfg = 0x00000422,
+		.dmc_ddrtr0 = 0x20705212,
+		.dmc_ddrtr1 = 0x201003CF,
+		.dmc_ddrtr2 = 0x00320107,
+		.dmc_ddrmr  = 0x00000422,
+		.dmc_ddrmr1 = 0x4,
+	},
+	[1] = {
+		.ddr_clk    = 133,
+		.dmc_ddrctl = 0x00000904,
+		.dmc_ddrcfg = 0x00000422,
+		.dmc_ddrtr0 = 0x20806313,
+		.dmc_ddrtr1 = 0x2013040D,
+		.dmc_ddrtr2 = 0x00320108,
+		.dmc_ddrmr  = 0x00000632,
+		.dmc_ddrmr1 = 0x4,
+	},
+	[2] = {
+		.ddr_clk    = 150,
+		.dmc_ddrctl = 0x00000904,
+		.dmc_ddrcfg = 0x00000422,
+		.dmc_ddrtr0 = 0x20A07323,
+		.dmc_ddrtr1 = 0x20160492,
+		.dmc_ddrtr2 = 0x00320209,
+		.dmc_ddrmr  = 0x00000632,
+		.dmc_ddrmr1 = 0x4,
+	},
+	[3] = {
+		.ddr_clk    = 166,
+		.dmc_ddrctl = 0x00000904,
+		.dmc_ddrcfg = 0x00000422,
+		.dmc_ddrtr0 = 0x20A07323,
+		.dmc_ddrtr1 = 0x2016050E,
+		.dmc_ddrtr2 = 0x00320209,
+		.dmc_ddrmr  = 0x00000632,
+		.dmc_ddrmr1 = 0x4,
+	},
+	[4] = {
+		.ddr_clk    = 200,
+		.dmc_ddrctl = 0x00000904,
+		.dmc_ddrcfg = 0x00000422,
+		.dmc_ddrtr0 = 0x20a07323,
+		.dmc_ddrtr1 = 0x2016050f,
+		.dmc_ddrtr2 = 0x00320509,
+		.dmc_ddrmr  = 0x00000632,
+		.dmc_ddrmr1 = 0x4,
+	},
+	[5] = {
+		.ddr_clk    = 225,
+		.dmc_ddrctl = 0x00000904,
+		.dmc_ddrcfg = 0x00000422,
+		.dmc_ddrtr0 = 0x20E0A424,
+		.dmc_ddrtr1 = 0x302006DB,
+		.dmc_ddrtr2 = 0x0032020D,
+		.dmc_ddrmr  = 0x00000842,
+		.dmc_ddrmr1 = 0x4,
+	},
+	[6] = {
+		.ddr_clk    = 250,
+		.dmc_ddrctl = 0x00000904,
+		.dmc_ddrcfg = 0x00000422,
+		.dmc_ddrtr0 = 0x20E0A424,
+		.dmc_ddrtr1 = 0x3020079E,
+		.dmc_ddrtr2 = 0x0032020D,
+		.dmc_ddrmr  = 0x00000842,
+		.dmc_ddrmr1 = 0x4,
+	},
+};
+#endif
+
+static inline void dmc_enter_self_refresh(void)
+{
+	if (bfin_read_DMC0_STAT() & MEMINITDONE) {
+		bfin_write_DMC0_CTL(bfin_read_DMC0_CTL() | SRREQ);
+		while (!(bfin_read_DMC0_STAT() & SRACK))
+			continue;
+	}
+}
+
+static inline void dmc_exit_self_refresh(void)
+{
+	if (bfin_read_DMC0_STAT() & MEMINITDONE) {
+		bfin_write_DMC0_CTL(bfin_read_DMC0_CTL() & ~SRREQ);
+		while (bfin_read_DMC0_STAT() & SRACK)
+			continue;
+	}
+}
+
+static inline void init_cgu(u32 cgu_div, u32 cgu_ctl)
+{
+	dmc_enter_self_refresh();
+
+	/* Don't set the same value of MSEL and DF to CGU_CTL */
+	if ((bfin_read32(CGU0_CTL) & (MSEL_MASK | DF_MASK))
+		!= cgu_ctl) {
+		bfin_write32(CGU0_DIV, cgu_div);
+		bfin_write32(CGU0_CTL, cgu_ctl);
+		while ((bfin_read32(CGU0_STAT) & (CLKSALGN | PLLBP)) ||
+			!(bfin_read32(CGU0_STAT) & PLOCK))
+			continue;
+	}
+
+	bfin_write32(CGU0_DIV, cgu_div | UPDT);
+	while (bfin_read32(CGU0_STAT) & CLKSALGN)
+		continue;
+
+	dmc_exit_self_refresh();
+}
+
+static inline void init_dmc(u32 dmc_clk)
+{
+	int i, dlldatacycle, dll_ctl;
+
+	for (i = 0; i < 7; i++) {
+		if (ddr_config_table[i].ddr_clk == dmc_clk) {
+			bfin_write_DMC0_CFG(ddr_config_table[i].dmc_ddrcfg);
+			bfin_write_DMC0_TR0(ddr_config_table[i].dmc_ddrtr0);
+			bfin_write_DMC0_TR1(ddr_config_table[i].dmc_ddrtr1);
+			bfin_write_DMC0_TR2(ddr_config_table[i].dmc_ddrtr2);
+			bfin_write_DMC0_MR(ddr_config_table[i].dmc_ddrmr);
+			bfin_write_DMC0_EMR1(ddr_config_table[i].dmc_ddrmr1);
+			bfin_write_DMC0_CTL(ddr_config_table[i].dmc_ddrctl);
+			break;
+		}
+	}
+
+	while (!(bfin_read_DMC0_STAT() & MEMINITDONE))
+		continue;
+
+	dlldatacycle = (bfin_read_DMC0_STAT() & PHYRDPHASE) >> PHYRDPHASE_OFFSET;
+	dll_ctl = bfin_read_DMC0_DLLCTL();
+	dll_ctl &= ~DATACYC;
+	bfin_write_DMC0_DLLCTL(dll_ctl | (dlldatacycle << DATACYC_OFFSET));
+
+	while (!(bfin_read_DMC0_STAT() & DLLCALDONE))
+		continue;
+}
+#endif
+
+#endif /*__MEM_INIT_H__*/
+
diff --git a/arch/blackfin/mach-bf609/include/mach/defBF60x_base.h b/arch/blackfin/mach-bf609/include/mach/defBF60x_base.h
index 6aac385..f1a6afa 100644
--- a/arch/blackfin/mach-bf609/include/mach/defBF60x_base.h
+++ b/arch/blackfin/mach-bf609/include/mach/defBF60x_base.h
@@ -2665,7 +2665,6 @@
 #define DEVSZ_1G                0x400         /* DMC External Bank Size = 1Gbit */
 #define DEVSZ_2G                0x500         /* DMC External Bank Size = 2Gbit */
 
-
 /* =========================
         L2CTL Registers
    ========================= */
diff --git a/arch/blackfin/mach-common/clocks-init.c b/arch/blackfin/mach-common/clocks-init.c
index 7ad2407..2308ce5 100644
--- a/arch/blackfin/mach-common/clocks-init.c
+++ b/arch/blackfin/mach-common/clocks-init.c
@@ -16,23 +16,14 @@
 #include <asm/dpmc.h>
 
 #ifdef CONFIG_BF60x
-#define CSEL_P			0
-#define S0SEL_P			5
-#define SYSSEL_P		8
-#define S1SEL_P			13
-#define DSEL_P			16
-#define OSEL_P			22
-#define ALGN_P			29
-#define UPDT_P			30
-#define LOCK_P			31
 
 #define CGU_CTL_VAL ((CONFIG_VCO_MULT << 8) | CLKIN_HALF)
 #define CGU_DIV_VAL \
-	((CONFIG_CCLK_DIV   << CSEL_P)   | \
-	(CONFIG_SCLK_DIV << SYSSEL_P)   | \
-	(CONFIG_SCLK0_DIV  << S0SEL_P)  | \
-	(CONFIG_SCLK1_DIV  << S1SEL_P)  | \
-	(CONFIG_DCLK_DIV   << DSEL_P))
+	((CONFIG_CCLK_DIV   << CSEL_OFFSET)   | \
+	(CONFIG_SCLK_DIV << SYSSEL_OFFSET)   | \
+	(CONFIG_SCLK0_DIV  << S0SEL_OFFSET)  | \
+	(CONFIG_SCLK1_DIV  << S1SEL_OFFSET)  | \
+	(CONFIG_DCLK_DIV   << DSEL_OFFSET))
 
 #define CONFIG_BFIN_DCLK (((CONFIG_CLKIN_HZ * CONFIG_VCO_MULT) / CONFIG_DCLK_DIV) / 1000000)
 #if ((CONFIG_BFIN_DCLK != 125) && \
@@ -41,89 +32,7 @@
 	(CONFIG_BFIN_DCLK != 225) && (CONFIG_BFIN_DCLK != 250))
 #error "DCLK must be in (125, 133, 150, 166, 200, 225, 250)MHz"
 #endif
-struct ddr_config {
-	u32 ddr_clk;
-	u32 dmc_ddrctl;
-	u32 dmc_ddrcfg;
-	u32 dmc_ddrtr0;
-	u32 dmc_ddrtr1;
-	u32 dmc_ddrtr2;
-	u32 dmc_ddrmr;
-	u32 dmc_ddrmr1;
-};
 
-struct ddr_config ddr_config_table[] __attribute__((section(".data_l1"))) = {
-	[0] = {
-		.ddr_clk    = 125,
-		.dmc_ddrctl = 0x00000904,
-		.dmc_ddrcfg = 0x00000422,
-		.dmc_ddrtr0 = 0x20705212,
-		.dmc_ddrtr1 = 0x201003CF,
-		.dmc_ddrtr2 = 0x00320107,
-		.dmc_ddrmr  = 0x00000422,
-		.dmc_ddrmr1 = 0x4,
-	},
-	[1] = {
-		.ddr_clk    = 133,
-		.dmc_ddrctl = 0x00000904,
-		.dmc_ddrcfg = 0x00000422,
-		.dmc_ddrtr0 = 0x20806313,
-		.dmc_ddrtr1 = 0x2013040D,
-		.dmc_ddrtr2 = 0x00320108,
-		.dmc_ddrmr  = 0x00000632,
-		.dmc_ddrmr1 = 0x4,
-	},
-	[2] = {
-		.ddr_clk    = 150,
-		.dmc_ddrctl = 0x00000904,
-		.dmc_ddrcfg = 0x00000422,
-		.dmc_ddrtr0 = 0x20A07323,
-		.dmc_ddrtr1 = 0x20160492,
-		.dmc_ddrtr2 = 0x00320209,
-		.dmc_ddrmr  = 0x00000632,
-		.dmc_ddrmr1 = 0x4,
-	},
-	[3] = {
-		.ddr_clk    = 166,
-		.dmc_ddrctl = 0x00000904,
-		.dmc_ddrcfg = 0x00000422,
-		.dmc_ddrtr0 = 0x20A07323,
-		.dmc_ddrtr1 = 0x2016050E,
-		.dmc_ddrtr2 = 0x00320209,
-		.dmc_ddrmr  = 0x00000632,
-		.dmc_ddrmr1 = 0x4,
-	},
-	[4] = {
-		.ddr_clk    = 200,
-		.dmc_ddrctl = 0x00000904,
-		.dmc_ddrcfg = 0x00000422,
-		.dmc_ddrtr0 = 0x20a07323,
-		.dmc_ddrtr1 = 0x2016050f,
-		.dmc_ddrtr2 = 0x00320509,
-		.dmc_ddrmr  = 0x00000632,
-		.dmc_ddrmr1 = 0x4,
-	},
-	[5] = {
-		.ddr_clk    = 225,
-		.dmc_ddrctl = 0x00000904,
-		.dmc_ddrcfg = 0x00000422,
-		.dmc_ddrtr0 = 0x20E0A424,
-		.dmc_ddrtr1 = 0x302006DB,
-		.dmc_ddrtr2 = 0x0032020D,
-		.dmc_ddrmr  = 0x00000842,
-		.dmc_ddrmr1 = 0x4,
-	},
-	[6] = {
-		.ddr_clk    = 250,
-		.dmc_ddrctl = 0x00000904,
-		.dmc_ddrcfg = 0x00000422,
-		.dmc_ddrtr0 = 0x20E0A424,
-		.dmc_ddrtr1 = 0x3020079E,
-		.dmc_ddrtr2 = 0x0032020D,
-		.dmc_ddrmr  = 0x00000842,
-		.dmc_ddrmr1 = 0x4,
-	},
-};
 #else
 #define SDGCTL_WIDTH (1 << 31)	/* SDRAM external data path width */
 #define PLL_CTL_VAL \
@@ -144,43 +53,9 @@ void init_clocks(void)
 	 * in the middle of reprogramming things, and that'll screw us up.
 	 * For example, any automatic DMAs left by U-Boot for splash screens.
 	 */
-
 #ifdef CONFIG_BF60x
-	int i, dlldatacycle, dll_ctl;
-	bfin_write32(CGU0_DIV, CGU_DIV_VAL);
-	bfin_write32(CGU0_CTL, CGU_CTL_VAL);
-	while ((bfin_read32(CGU0_STAT) & 0x8) || !(bfin_read32(CGU0_STAT) & 0x4))
-		continue;
-
-	bfin_write32(CGU0_DIV, CGU_DIV_VAL | (1 << UPDT_P));
-	while (bfin_read32(CGU0_STAT) & (1 << 3))
-		continue;
-
-	for (i = 0; i < 7; i++) {
-		if (ddr_config_table[i].ddr_clk == CONFIG_BFIN_DCLK) {
-			bfin_write_DDR0_CFG(ddr_config_table[i].dmc_ddrcfg);
-			bfin_write_DDR0_TR0(ddr_config_table[i].dmc_ddrtr0);
-			bfin_write_DDR0_TR1(ddr_config_table[i].dmc_ddrtr1);
-			bfin_write_DDR0_TR2(ddr_config_table[i].dmc_ddrtr2);
-			bfin_write_DDR0_MR(ddr_config_table[i].dmc_ddrmr);
-			bfin_write_DDR0_EMR1(ddr_config_table[i].dmc_ddrmr1);
-			bfin_write_DDR0_CTL(ddr_config_table[i].dmc_ddrctl);
-			break;
-		}
-	}
-
-	do_sync();
-	while (!(bfin_read_DDR0_STAT() & 0x4))
-		continue;
-
-	dlldatacycle = (bfin_read_DDR0_STAT() & 0x00f00000) >> 20;
-	dll_ctl = bfin_read_DDR0_DLLCTL();
-	dll_ctl &= 0x0ff;
-	bfin_write_DDR0_DLLCTL(dll_ctl | (dlldatacycle << 8));
-
-	do_sync();
-	while (!(bfin_read_DDR0_STAT() & 0x2000))
-		continue;
+	init_cgu(CGU_DIV_VAL, CGU_CTL_VAL);
+	init_dmc(CONFIG_BFIN_DCLK);
 #else
 	size_t i;
 	for (i = 0; i < MAX_DMA_CHANNELS; ++i) {