summaryrefslogtreecommitdiff
path: root/arch/arm/mach-stmp378x/emi.inc
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/mach-stmp378x/emi.inc')
-rw-r--r--arch/arm/mach-stmp378x/emi.inc624
1 files changed, 624 insertions, 0 deletions
diff --git a/arch/arm/mach-stmp378x/emi.inc b/arch/arm/mach-stmp378x/emi.inc
new file mode 100644
index 000000000000..66ae1b7bd85c
--- /dev/null
+++ b/arch/arm/mach-stmp378x/emi.inc
@@ -0,0 +1,624 @@
+/*
+ * Freescale STMP378X low level RAM timings tables for Micron mDDR
+ *
+ * Author: Vitaly Wool <vital@embeddedalley.com>
+ *
+ * Copyright 2008 Freescale Semiconductor, Inc. All Rights Reserved.
+ * Copyright 2008 Embedded Alley Solutions, Inc All Rights Reserved.
+ */
+
+/*
+ * The code contained herein is licensed under the GNU General Public
+ * License. You may obtain a copy of the GNU General Public License
+ * Version 2 or later at the following locations:
+ *
+ * http://www.opensource.org/licenses/gpl-license.html
+ * http://www.gnu.org/copyleft/gpl.html
+ */
+__stmp_emi_set_values:
+ stmfd r9!, {r0 - r4, lr}
+ mov r1, #(HW_CLKCTRL_EMI_ADDR & 0x000000FF)
+ orr r1, r1, #(HW_CLKCTRL_EMI_ADDR & 0x0000FF00)
+ orr r1, r1, #(HW_CLKCTRL_EMI_ADDR & 0x00FF0000)
+ orr r1, r1, #(HW_CLKCTRL_EMI_ADDR & 0xFF000000)
+
+@ DDC_RESNCY is deprecated at mx23
+@ mov r3, #BM_CLKCTRL_EMI_DCC_RESYNC_ENABLE
+
+ mov r0, #(HW_CLKCTRL_FRAC_ADDR & 0x000000FF)
+ orr r0, r0, #(HW_CLKCTRL_FRAC_ADDR & 0x0000FF00)
+ orr r0, r0, #(HW_CLKCTRL_FRAC_ADDR & 0x00FF0000)
+ orr r0, r0, #(HW_CLKCTRL_FRAC_ADDR & 0xFF000000)
+ ldr r2, [r0]
+
+ and r4, r2, #BM_CLKCTRL_FRAC_EMIFRAC
+ lsr r4, r4, #8
+ /* new pll div > cur pll div? */
+ cmp r4, r8
+ bgt 1f
+ bic r4, r2, #BM_CLKCTRL_FRAC_EMIFRAC
+ orr r4, r4, r8, lsl #8
+ str r4, [r0]
+ nop
+ nop
+ nop
+
+@ Change integer/fractional dividers.
+
+@ The fractional divider and integer divider must be written in such
+@ an order to guarantee that when going from a lower frequency to a
+@ higher frequency that any intermediate frequencies do not exceed
+@ the final frequency. For this reason, we must make sure to check
+@ the current divider values with the new divider values and write
+@ them in the correct order.
+
+1: ldr r4, [r1]
+ and r4, r4, #BM_CLKCTRL_EMI_DIV_EMI
+ /* new emi div > cur emi div? */
+ cmp r4, r7
+ bgt 2f
+ mov r4, r7
+ orr r4, r4, #0x100
+
+@ This was for DCC_RESYNC_ENABLE, which is deprecated in mx23
+@ orr r4, r4, r3
+
+ str r4, [r1]
+11: ldr r4, [r1]
+ tst r4, #BM_CLKCTRL_EMI_BUSY_REF_EMI
+ bne 11b
+ tst r4, #BM_CLKCTRL_EMI_BUSY_REF_XTAL
+ bne 11b
+
+2: ldr r2, [r0]
+
+ and r4, r2, #BM_CLKCTRL_FRAC_EMIFRAC
+ lsr r4, r4, #8
+ /* new pll div != cur pll div? */
+ cmp r4, r8
+ beq 3f
+ bic r4, r2, #BM_CLKCTRL_FRAC_EMIFRAC
+ orr r4, r4, r8, lsl #8
+ str r4, [r0]
+ nop
+ nop
+ nop
+
+3: ldr r4, [r1]
+ and r4, r4, #BM_CLKCTRL_EMI_DIV_EMI
+ /* new emi div != cur emi div? */
+ cmp r4, r7
+ beq 4f
+ mov r4, r7
+ orr r4, r4, #0x100
+
+@ This was for DCC_RESYNC_ENABLE, which is deprecated in mx23
+@ orr r4, r4, r3
+ str r4, [r1]
+31: ldr r4, [r1]
+ tst r4, #BM_CLKCTRL_EMI_BUSY_REF_EMI
+ bne 31b
+ tst r4, #BM_CLKCTRL_EMI_BUSY_REF_XTAL
+ bne 31b
+
+4: ldmfd r9!, {r0 - r4, lr}
+ mov pc, lr
+
+stmp3xxx_ram_24M_set_timings:
+ ldr r0, __stmp_dram_ctl00
+#ifdef CONFIG_STMP378X_RAM_MDDR
+ adr r1, __stmp_dram_24M_values
+#else
+// 96MHz is the lowest frequency supported for DDR1.
+ adr r1, __stmp_dram_96M_values
+#endif
+1: ldr r2, [r1]
+ ldr r3, [r1, #4]
+ mov r4, r2, lsl #2
+ str r3, [r0, r4]
+ add r1, r1, #8
+ cmp r2, #40
+ bne 1b
+ mov pc, lr
+
+stmp3xxx_ram_48M_set_timings:
+ ldr r0, __stmp_dram_ctl00
+#ifdef CONFIG_STMP378X_RAM_MDDR
+ adr r1, __stmp_dram_48M_values
+#else
+// 96MHz is the lowest frequency supported for DDR1.
+ adr r1, __stmp_dram_96M_values
+#endif
+1: ldr r2, [r1]
+ ldr r3, [r1, #4]
+ mov r4, r2, lsl #2
+ str r3, [r0, r4]
+ add r1, r1, #8
+ cmp r2, #40
+ bne 1b
+ mov pc, lr
+
+stmp3xxx_ram_60M_set_timings:
+ ldr r0, __stmp_dram_ctl00
+#ifdef CONFIG_STMP378X_RAM_MDDR
+ adr r1, __stmp_dram_60M_values
+#else
+// 96MHz is the lowest frequency supported for DDR1.
+ adr r1, __stmp_dram_96M_values
+#endif
+1: ldr r2, [r1]
+ ldr r3, [r1, #4]
+ mov r4, r2, lsl #2
+ str r3, [r0, r4]
+ add r1, r1, #8
+ cmp r2, #40
+ bne 1b
+ mov pc, lr
+
+stmp3xxx_ram_80M_set_timings:
+ ldr r0, __stmp_dram_ctl00
+#ifdef CONFIG_STMP378X_RAM_MDDR
+ adr r1, __stmp_dram_80M_values
+#else
+// 96MHz is the lowest frequency supported for DDR1.
+ adr r1, __stmp_dram_96M_values
+#endif
+1: ldr r2, [r1]
+ ldr r3, [r1, #4]
+ mov r4, r2, lsl #2
+ str r3, [r0, r4]
+ add r1, r1, #8
+ cmp r2, #40
+ bne 1b
+ mov pc, lr
+
+stmp3xxx_ram_96M_set_timings:
+ ldr r0, __stmp_dram_ctl00
+ adr r1, __stmp_dram_96M_values
+1: ldr r2, [r1]
+ ldr r3, [r1, #4]
+ mov r4, r2, lsl #2
+ str r3, [r0, r4]
+ add r1, r1, #8
+ cmp r2, #40
+ bne 1b
+ mov pc, lr
+
+stmp3xxx_ram_120M_set_timings:
+ ldr r0, __stmp_dram_ctl00
+ adr r1, __stmp_dram_120M_values
+1: ldr r2, [r1]
+ ldr r3, [r1, #4]
+ mov r4, r2, lsl #2
+ str r3, [r0, r4]
+ add r1, r1, #8
+ cmp r2, #40
+ bne 1b
+ mov pc, lr
+
+stmp3xxx_ram_133M_set_timings:
+ ldr r0, __stmp_dram_ctl00
+ adr r1, __stmp_dram_133M_values
+1: ldr r2, [r1]
+ ldr r3, [r1, #4]
+ str r3, [r0, r2, lsl #2]
+ add r1, r1, #8
+ cmp r2, #40
+ bne 1b
+ mov pc, lr
+
+stmp3xxx_ram_150M_set_timings:
+ ldr r0, __stmp_dram_ctl00
+ adr r1, __stmp_dram_150M_values
+1: ldr r2, [r1]
+ ldr r3, [r1, #4]
+ str r3, [r0, r2, lsl #2]
+ add r1, r1, #8
+ cmp r2, #40
+ bne 1b
+ mov pc, lr
+
+__stmp_dram_ctl00:
+ .word IO_ADDRESS(0x800E0000)
+__stmp_dram_emi00:
+ .word IO_ADDRESS(0x80020000)
+__stmp_power_vdddctrl:
+ .word IO_ADDRESS(0x80044040)
+
+stmp3xxx_ram_save_timings:
+ ldr r0, __stmp_dram_ctl00
+ adr r1, __stmp_dram_saved_values
+1: ldr r2, [r1]
+ mov r4, r2, lsl #2
+ ldr r3, [r0, r4]
+ str r3, [r1, #4]
+ add r1, r1, #8
+ cmp r2, #40
+ bne 1b
+ mov pc, lr
+
+#ifdef CONFIG_STMP378X_RAM_MDDR
+__stmp_dram_24M_values:
+ .word 4
+ .word 0x01000101
+ .word 7
+ .word 0x01000101
+ .word 12
+ .word 0x02010002
+ .word 13
+ .word 0x06060a02
+ .word 15
+ .word 0x01030000
+ .word 17
+ .word 0x2d000102
+ .word 18
+ .word 0x20200000
+ .word 19
+ .word 0x027f1414
+ .word 20
+ .word 0x01021608
+ .word 21
+ .word 0x00000002
+ .word 26
+ .word 0x000000b3
+ .word 32
+ .word 0x00030687
+ .word 33
+ .word 0x00000003
+ .word 34
+ .word 0x000012c1
+ .word 40
+ .word 0x00010000
+
+__stmp_dram_48M_values:
+ .word 4
+ .word 0x01000101
+ .word 7
+ .word 0x01000101
+ .word 13
+ .word 0x06060a02
+ .word 12
+ .word 0x02010002
+ .word 15
+ .word 0x02040000
+ .word 17
+ .word 0x2d000104
+ .word 18
+ .word 0x1f1f0000
+ .word 19
+ .word 0x027f0a0a
+ .word 20
+ .word 0x02030a10
+ .word 21
+ .word 0x00000004
+ .word 26
+ .word 0x0000016f
+ .word 32
+ .word 0x00060d17
+ .word 33
+ .word 0x00000006
+ .word 34
+ .word 0x00002582
+ .word 40
+ .word 0x00020000
+
+__stmp_dram_60M_values:
+__stmp_dram_80M_values:
+ .word 4
+ .word 0x01000101
+ .word 7
+ .word 0x01000101
+ .word 12
+ .word 0x02020002
+ .word 13
+ .word 0x06060a02
+ .word 15
+ .word 0x02040000
+ .word 17
+ .word 0x2d000005
+ .word 18
+ .word 0x1f1f0000
+ .word 19
+ .word 0x027f0a0a
+ .word 20
+ .word 0x02040a10
+ .word 21
+ .word 0x00000006
+ .word 26
+ .word 0x000001cc
+ .word 32
+ .word 0x00081060
+ .word 33
+ .word 0x00000008
+ .word 34
+ .word 0x00002ee5
+ .word 40
+ .word 0x00020000
+
+__stmp_dram_96M_values:
+ .word 4
+ .word 0x00000101
+ .word 7
+ .word 0x01000001
+ .word 12
+ .word 0x02020002
+ .word 13
+ .word 0x06070a02
+ .word 15
+ .word 0x03050000
+ .word 17
+ .word 0x2d000808
+ .word 18
+ .word 0x1f1f0000
+ .word 19
+ .word 0x020c1010
+ .word 20
+ .word 0x0305101c
+ .word 21
+ .word 0x00000007
+ .word 26
+ .word 0x000002e6
+ .word 32
+ .word 0x000c1a3b
+ .word 33
+ .word 0x0000000c
+ .word 34
+ .word 0x00004b0d
+ .word 40
+ .word 0x00030000
+
+__stmp_dram_120M_values:
+ .word 4
+ .word 0x00000101
+ .word 7
+ .word 0x01000001
+ .word 12
+ .word 0x02020002
+ .word 13
+ .word 0x06070a02
+ .word 15
+ .word 0x03050000
+ .word 17
+ .word 0x2300080a
+ .word 18
+ .word 0x1f1f0000
+ .word 19
+ .word 0x020c1010
+ .word 20
+ .word 0x0306101c
+ .word 21
+ .word 0x00000009
+ .word 26
+ .word 0x000003a1
+ .word 32
+ .word 0x000f20ca
+ .word 33
+ .word 0x0000000f
+ .word 34
+ .word 0x00005dca
+ .word 40
+ .word 0x00040000
+
+__stmp_dram_133M_values:
+__stmp_dram_150M_values:
+ .word 4
+ .word 0x00000101
+ .word 7
+ .word 0x01000001
+ .word 12
+ .word 0x02020002
+ .word 13
+ .word 0x06070a02
+ .word 15
+ .word 0x03050000
+ .word 17
+ .word 0x2000080a
+ .word 18
+ .word 0x1f1f0000
+ .word 19
+ .word 0x020c1010
+ .word 20
+ .word 0x0306101c
+ .word 21
+ .word 0x0000000a
+ .word 26
+ .word 0x00000408
+ .word 32
+ .word 0x0010245f
+ .word 33
+ .word 0x00000010
+ .word 34
+ .word 0x00006808
+ .word 40
+ .word 0x00040000
+
+#elif CONFIG_STMP378X_RAM_DDR
+
+__stmp_dram_96M_values:
+ .word 4
+ .word 0x00000101
+ .word 7
+ .word 0x01000001
+ .word 11
+ .word 0x00070202
+ .word 12
+ .word 0x02020000 @ t_wr 2, t_rrd 2, t_cke 0
+ .word 13
+ .word 0x04040a01 @ t_wtr 1
+ .word 15
+ .word 0x02040000 @ t_rp 2, t_dal 4
+ .word 17
+ .word 0x2f001706 @ dll_start_point 0x2f, dll_increment 0x17, t_rc 6
+ .word 19
+ .word 0x027f1a1a
+ .word 20
+ .word 0x02051c21 @ t_rcd 2, t_rasmin 5, wr_dqs_shift 0x22
+ .word 21
+ .word 0x00000007 @ t_rfc 7
+ .word 26
+ .word 0x000002e6 /* 0x347b */ @ t_ref
+ .word 32
+ .word 0x00081a3e @ t_xsnr 8, t_rasmax 0x1a3e
+ .word 33
+ .word 0x000000c8 @ t_xsr 0xc8
+ .word 34
+ .word 0x00004b0d @ t_init
+ .word 40
+ .word 0x00010000
+
+__stmp_dram_120M_values:
+ .word 4
+ .word 0x00000101
+ .word 7
+ .word 0x01000001
+ .word 11
+ .word 0x00070202
+ .word 12
+ .word 0x02020000 @ t_wr 2, t_rrd 2, t_cke 0
+ .word 13
+ .word 0x04040a01 @ t_wtr 1
+ .word 15
+ .word 0x02040000 @ t_rp 2, t_dal 4
+ .word 17
+ .word 0x26001308 @ dll_start_point 0x26, dll_increment 0x13, t_rc 8
+ .word 19
+ .word 0x027f1a1a
+ .word 20
+ .word 0x02061c23 @ t_rcd 2, t_rasmin 6
+ .word 21
+ .word 0x00000009 @ t_rfc 9
+ .word 26
+ .word 0x000003a1 /* 0x41a6 */ @ t_ref
+ .word 32
+ .word 0x000a20ca @ t_xsnr 9, t_rasmax 0x20ca
+ .word 33
+ .word 0x000000c8 @ t_xsr 0xc8
+ .word 34
+ .word 0x00005dca @ t_init
+ .word 40
+ .word 0x00010000
+
+__stmp_dram_133M_values:
+ .word 4
+ .word 0x00000101
+ .word 7
+ .word 0x01000001
+ .word 11
+ .word 0x00070202
+ .word 12
+ .word 0x02020000
+ .word 13
+ .word 0x04040a01
+ .word 15
+ .word 0x02040000
+ .word 17
+ .word 0x19000f08 @ t_rc 0xa
+ .word 19
+ .word 0x02021313
+ .word 20
+ .word 0x02061521
+ .word 21
+ .word 0x0000000a
+ .word 26
+ .word 0x000003f7 /* 0x48b9 */
+ .word 32
+ .word 0x000a23cd
+ .word 33
+ .word 0x000000c8 @ t_xsr 0xc8
+ .word 34
+ .word 0x00006665
+ .word 40
+ .word 0x00010000
+
+__stmp_dram_150M_values:
+ .word 4
+ .word 0x00000101
+ .word 7
+ .word 0x01000001
+/*
+Note that CASLAT of 0x06 means 2.5 cycles. This is needed to operate at this
+frequency. HOWEVER, we would need to implement the setting of WRITEMODEREG
+after setting CAS latency to assure that the new CAS latency is actually
+being used in the EMI controller. Otherwise, the controller will still be
+using whatever was set the first time the EMI controller was initialized.
+Also, a CASLAT of 2.5 needs caslat_lin and caslat_lin_gate of 0x05
+(also 2.5 cycles).
+*/
+ .word 11
+ .word 0x00070206
+ .word 12
+ .word 0x02020000 @ t_wr 2, t_rrd 2, t_cke 0
+/*
+ caslat_lin and caslat_lin_gate of 0x05 since CASLAT is 0x06 (2.5 cycles). See above note.
+*/
+ .word 13
+ .word 0x05050a02 @ t_wtr 2
+ .word 15
+ .word 0x03060000 @ t_rp 3, t_dal 6
+ .word 17
+ .word 0x18000d0c @ dll_start_point 0x18, dll_increment 0xd, t_rc 0xc
+ .word 19
+ .word 0x027f0f0f
+ .word 20
+ .word 0x03071121 @ t_rcd 3, t_rasmin 7
+ .word 21
+ .word 0x0000000c @ t_rfc 0xc
+ .word 26
+ .word 0x000001cc /* 0x20cd */ @ t_ref
+ .word 32
+ .word 0x000c2860 @ t_xsnr 0xc, t_rasmax 0x2860
+ .word 33
+ .word 0x000000c8 @ t_xsr 0xc8
+ .word 34
+ .word 0x00007554 @ t_init
+ .word 40
+ .word 0x00010000
+
+#else
+#error RAM chip not defined
+#endif
+
+stmp3xxx_ram_restore_timings:
+ ldr r0, __stmp_dram_ctl00
+ adr r1, __stmp_dram_saved_values
+1: ldr r2, [r1]
+ ldr r3, [r1, #4]
+ mov r4, r2, lsl #2
+ str r3, [r0, r4]
+ add r1, r1, #8
+ cmp r2, #40
+ bne 1b
+ mov pc, lr
+
+__stmp_dram_saved_values:
+ .word 4
+ .word 0
+ .word 7
+ .word 0
+ .word 12
+ .word 0
+ .word 13
+ .word 0
+ .word 15
+ .word 0
+ .word 17
+ .word 0
+ .word 18
+ .word 0
+ .word 19
+ .word 0
+ .word 20
+ .word 0
+ .word 21
+ .word 0
+ .word 26
+ .word 0
+ .word 32
+ .word 0
+ .word 33
+ .word 0
+ .word 34
+ .word 0
+ .word 40
+ .word 0
+
generated by cgit v1.2.3 (git 2.0.4) at 2024-05-31 08:22:31 +0000