Freescale MPC5554 device tree (was: cross-compiling Linux for PowerPC e200 core?)
Németh Márton
nm127 at freemail.hu
Tue Mar 30 17:54:14 EST 2010
Hi,
Grant Likely wrote:
> 2010/3/13 Németh Márton <nm127 at freemail.hu>:
[...]
>> + };
>> +
>> + etpu at 3fc0000 { // Enhanced Time Processing Unit
>> + compatible = "fsl,mpc5554-etpu";
>> + reg = <0x03fc0000 0x4000>;
>> + interrupts = <67 1 // Global Exception
>> + 68 1 // A Channel 0
>> + 69 1 // A Channel 1
>> + 70 1 // A Channel 2
>> + 71 1 // A Channel 3
>> + 72 1 // A Channel 4
>> + 73 1 // A Channel 5
>> + 74 1 // A Channel 6
>> + 75 1 // A Channel 7
>> + 76 1 // A Channel 8
>> + 77 1 // A Channel 9
>> + 78 1 // A Channel 10
>> + 79 1 // A Channel 11
>> + 80 1 // A Channel 12
>> + 81 1 // A Channel 13
>> + 82 1 // A Channel 14
>> + 83 1 // A Channel 15
>> + 84 1 // A Channel 16
>> + 85 1 // A Channel 17
>> + 86 1 // A Channel 18
>> + 87 1 // A Channel 19
>> + 88 1 // A Channel 20
>> + 89 1 // A Channel 21
>> + 90 1 // A Channel 22
>> + 91 1 // A Channel 23
>> + 92 1 // A Channel 24
>> + 93 1 // A Channel 25
>> + 94 1 // A Channel 26
>> + 95 1 // A Channel 27
>> + 96 1 // A Channel 28
>> + 97 1 // A Channel 29
>> + 98 1 // A Channel 30
>> + 99 1 // A Channel 31
>> + 243 1 // B Channel 0
>> + 244 1 // B Channel 1
>> + 245 1 // B Channel 2
>> + 246 1 // B Channel 3
>> + 247 1 // B Channel 4
>> + 248 1 // B Channel 5
>> + 249 1 // B Channel 6
>> + 250 1 // B Channel 7
>> + 251 1 // B Channel 8
>> + 252 1 // B Channel 9
>> + 253 1 // B Channel 10
>> + 254 1 // B Channel 11
>> + 255 1 // B Channel 12
>> + 256 1 // B Channel 13
>> + 257 1 // B Channel 14
>> + 258 1 // B Channel 15
>> + 259 1 // B Channel 16
>> + 260 1 // B Channel 17
>> + 261 1 // B Channel 18
>> + 262 1 // B Channel 19
>> + 263 1 // B Channel 20
>> + 264 1 // B Channel 21
>> + 265 1 // B Channel 22
>> + 266 1 // B Channel 23
>> + 267 1 // B Channel 24
>> + 268 1 // B Channel 25
>> + 269 1 // B Channel 26
>> + 270 1 // B Channel 27
>> + 271 1 // B Channel 28
>> + 272 1 // B Channel 29
>> + 273 1 // B Channel 30
>> + 274 1>; // B Channel 31
>
> Are A and B two instances of the same hardware block? Consider having
> a subnode for each instance to give some logical separation to this
> list and associate register ranges with instances. Doing it that way
> also makes it easier for external device nodes to describe an
> attachment to a particular channel.
>
>> + };
>> +
>> + etpudata at 3fc8000 { // eTPU Shared Data Memory (Parameter RAM)
>> + compatible = "fsl,mpc5554-etpudata";
>> + reg = <0x03fc8000 0x4000>;
>> + };
>> +
>> + etpudata at 3fcc000 { // eTPU Shared Data Memory (Parameter RAM) mirror
>> + compatible = "fsl,mpc5554-etpudata";
>> + reg = <0x03fcc000 0x4000>;
>> + };
>> +
>> + etpucode at 3fd0000 { // eTPU Shared Code RAM
>> + compatible = "fsl,mpc5554-etpucode";
>> + reg = <0x03fd0000 0x4000>;
>> + };
>
> Should all this etpu stuff be part of the etpu node?
With this version of MPC5554 device tree I try to improve the eTPU
related node. The Table 18-6 on page 18-15 in the
http://www.freescale.com/files/32bit/doc/ref_manual/MPC5553_MPC5554_RM.pdf
shows the detailed memory map of the eTPU. What is visible is that the
eTPU A and eTPU B is interleaved in the memory map. For example ETPU_ECR_A
is at Base + 0x0_0014 while ETPU_ECR_B is at Base + 0x0_0018. Then comes a
register set for time base configuration: ETPU_TBCR_A is at Base + 0x0_0020,
and ETPU_TBCR_B is at Base + 0x0_0040. As you can see the eTPU A and eTPU B
registers are not just shifted by a fixed offset but comes interleaved
according to the hardware designer wish.
How can the multiple register ranges be expressed in device tree?
Regards,
Márton Németh
---
From: Márton Németh <nm127 at freemail.hu>
Add device tree for Freescale MPC5554.
Signed-off-by: Márton Németh <nm127 at freemail.hu>
---
diff -uprN linux-2.6.33.orig/arch/powerpc/boot/dts//mpc5554.dts linux-2.6.33/arch/powerpc/boot/dts/mpc5554.dts
--- linux-2.6.33.orig/arch/powerpc/boot/dts//mpc5554.dts 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.33/arch/powerpc/boot/dts/mpc5554.dts 2010-03-30 08:17:06.000000000 +0200
@@ -0,0 +1,321 @@
+/*
+ * Freescale MPC5554 Device Tree Source
+ *
+ * Based on MPC5553/5554 Microcontroller Reference Manual, Rev. 4.0, 04/2007
+ * http://www.freescale.com/files/32bit/doc/ref_manual/MPC5553_MPC5554_RM.pdf
+ * - Block Diagram: page 1-3, Figure 1-1
+ * - Memory Map: page 1-21, Table 1-2
+ * - Interrupt Request Sources: page 10-16, Table 10-9
+ *
+ * This device tree also contains external components found on MPC5554DEMO
+ * http://www.axman.com/files/MPC5554DEMO_man_G.pdf
+ * http://www.axman.com/files/MPC5554DEMO_SCH_G.pdf
+ *
+ * Copyright 2010 Márton Németh
+ * Márton Németh <nm127 at freemail.hu>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+/dts-v1/;
+
+/ {
+ model = "MPC5554";
+ compatible = "fsl,MPC5554EVB"; // Freescale MPC5554 Evaluation Board
+ #address-cells = <1>;
+ #size-cells = <1>;
+ interrupt-parent = <&intc>;
+
+ cpus {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ cpu at 0 {
+ device_type = "cpu";
+ compatible = "PowerPC,5554", "fsl,mpc5554-e200z6", "fsl,powerpc-e200z6";
+ reg = <0>;
+ d-cache-line-size = <32>;
+ i-cache-line-size = <32>;
+ d-cache-size = <0x8000>; // L1, 32KiB
+ i-cache-size = <0x8000>; // L1, 32KiB
+ timebase-frequency = <0>; // from bootloader
+ bus-frequency = <0>; // from bootloader
+ clock-frequency = <0>; // from bootloader
+ };
+ };
+
+ memory at 20000000 {
+ device_type = "memory";
+ reg = <0x20000000 0x80000>; // 512KiB external SRAM: ISSI IS61SF12832
+ // CS0 or CS1 selectable by the SRAM_SEL jumper
+ };
+
+ xbar at fff04000 { // System Bus Crossbar Switch (XBAR)
+ compatible = "fsl,mpc5554-xbar";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ // The full memory range is covered by XBAR
+ ranges;
+ reg = <0xfff04000 0x4000>;
+
+ flash at 0 { // read-only FLASH
+ compatible = "fsl,mpc5554-flash";
+ reg = <0x00000000 0x200000>; // 2MiB internal FLASH
+ };
+
+ memory at 40000000 {
+ compatible = "fsl,mpc5554-sram";
+ reg = <0x40000000 0x10000>; // 64KiB internal SRAM
+ };
+
+ bridge at c3f00000 {
+ compatible = "fsl,mpc5554-pbridge-a";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges = <0 0xc0000000 0x20000000>;
+ reg = <0xc3f00000 0x4000>;
+
+ fmpll at 3f80000 { // Frequency Modulated PLL
+ compatible = "fsl,mpc5554-fmpll";
+ reg = <0x03f80000 0x4000>;
+ interrupts = <43 // Loss of Clock
+ 44>; // Loss of Lock
+ };
+
+ flashconfig at 3f88000 { // Flash Configuration
+ compatible = "fsl,mpc5554-flashconfig";
+ reg = <0x03f88000 0x4000>;
+ };
+
+ siuintc: siu at 3f89000 { // System Integration Unit
+ compatible = "fsl,mpc5554-siu";
+ reg = <0x03f90000 0x4000>;
+
+ // SIU is an interrupt controller by means that it handles
+ // the external interrupts
+ #interrupt-cells = <2>; // cell 1: extirq#, cell 2: level/edge flags
+ interrupt-controller;
+ interrupts = <45 1 // External Interrupt Overrun 0-15
+ 46 1 // External Interrupt 0
+ 47 1 // External Interrupt 1
+ 48 1 // External Interrupt 2
+ 49 1 // External Interrupt 3
+ 50 1>; // External Interrupt 4-15
+ };
+
+ emios at 3fa0000 { // Modular Timer System
+ compatible = "fsl,mpc5554-emios";
+ reg = <0x03fa0000 0x4000>;
+ interrupts = < 51 52 53 54 55 56 57 58 // Channels 0-7
+ 59 60 61 62 63 64 65 66 // Channels 8-15
+ 202 203 204 205 206 207 208 209>; // Channel 16-23
+ };
+
+ etpu at 3fc0000 { // Enhanced Time Processing Unit
+ compatible = "fsl,mpc5554-etpu";
+ reg = <0x03fc0000 0x4000>;
+ interrupts = <67>; // Global Exception
+
+ etpuengine at 3fc0014 { // eTPU Engine A
+ compatible = "fsl,mpc5554-etpuengine";
+ interrupts = <68 69 70 71 72 73 74 75 // A Channels 0-7
+ 76 77 78 79 80 81 82 83 // A Channels 8-15
+ 84 85 86 87 88 89 90 91 // A Channels 16-23
+ 92 93 94 95 96 97 98 99 // A Channels 24-31
+ };
+
+ etpuengine at 3fc0018 { // eTPU Engine B
+ compatible = "fsl,mpc5554-etpuengine";
+ interrupts = <243 244 245 256 247 248 249 250 // B Channels 0-7
+ 251 252 253 254 255 256 257 248 // B Channels 8-15
+ 259 260 261 262 263 264 265 266 // B Channels 16-23
+ 267 268 269 270 271 272 273 274>; // B Channels 24-31
+ };
+
+ etpudata at 3fc8000 { // eTPU Shared Data Memory (Parameter RAM)
+ compatible = "fsl,mpc5554-etpudata";
+ reg = <0x03fc8000 0x4000>; // 3 KiB
+ };
+
+ etpudata at 3fcc000 { // eTPU Shared Data Memory (Parameter RAM) mirror
+ compatible = "fsl,mpc5554-etpudata";
+ reg = <0x03fcc000 0x4000>; // 3 KiB
+ };
+
+ etpucode at 3fd0000 { // eTPU Shared Code RAM
+ compatible = "fsl,mpc5554-etpucode";
+ reg = <0x03fd0000 0x4000>; // 16 KiB
+ };
+ };
+ };
+
+ bridge at fff00000 {
+ compatible = "fsl,mpc5554-pbridge-b";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges = <0 0xe0000000 0x20000000>;
+ reg = <0xfff00000 0x4000>;
+
+ ecsm at fff40000 { // Error Correction Status Module (ECSM)
+ compatible = "fsl,mpc5554-ecsm";
+ reg = <0xfff40000 0x4000>;
+ interrupts = <8 // Software Watchdog Interrupt
+ 9>; // Combined: Internal SRAM Non-Correctable Error, Flash Non-Correctable Error
+ };
+
+ edma at fff44000 { // Enhanced DMA Controller (eDMA)
+ compatible = "fsl,mpc5554-edma";
+ reg = <0xfff44000 0x4000>;
+ interrupts = <10 // Channel Error 0-31
+ 11 12 13 14 15 16 17 18 // Channels 0-7
+ 19 20 21 22 23 24 25 26 // Channels 8-15
+ 27 28 29 30 31 32 33 34 // Channels 16-23
+ 35 36 37 38 39 40 41 42 // Channels 24-31
+ 210 // Channel Error 32-63
+ 211 212 213 214 215 216 217 218 // Channels 32-39
+ 219 220 221 222 223 224 225 226 // Channels 40-47
+ 227 228 229 230 231 232 233 234 // Channels 48-55
+ 235 236 237 238 239 240 241 242>; // Channels 56-63
+ };
+
+ intc: intc at fff48000 { // Interrupt Controller (INTC)
+ compatible = "fsl,mpc5554-intc";
+ interrupt-controller;
+ #interrupt-cells = <1>;
+ reg = <0xfff48000 0x4000>;
+ };
+
+ eqadc at fff80000 { // Enhanced Queued Analog-to-Digital Converter (eQADC)
+ compatible = "fsl,mpc5554-eqacd";
+ reg = <0xfff80000 0x4000>;
+ interrupts = <100 // Combined: Trigger Overrun, Receive FIFO Overflow, Command FIFO Underflow
+ 101 // Command FIFO 0 Non-Coherency
+ 102 // Command FIFO 0 Pause
+ 103 // Command FIFO 0 End of Queue
+ 104 // Command FIFO 0 Fill
+ 105 // Command FIFO 0 Drain
+ 106 // Command FIFO 1 Non-Coherency
+ 107 // Command FIFO 1 Pause
+ 108 // Command FIFO 1 End of Queue
+ 109 // Command FIFO 1 Fill
+ 111 // Command FIFO 1 Drain
+ 111 // Command FIFO 2 Non-Coherency
+ 112 // Command FIFO 2 Pause
+ 113 // Command FIFO 2 End of Queue
+ 114 // Command FIFO 2 Fill
+ 115 // Command FIFO 2 Drain
+ 116 // Command FIFO 3 Non-Coherency
+ 117 // Command FIFO 3 Pause
+ 118 // Command FIFO 3 End of Queue
+ 119 // Command FIFO 3 Fill
+ 120 // Command FIFO 3 Drain
+ 121 // Command FIFO 4 Non-Coherency
+ 122 // Command FIFO 4 Pause
+ 123 // Command FIFO 4 End of Queue
+ 124 // Command FIFO 4 Fill
+ 125 // Command FIFO 4 Drain
+ 126 // Command FIFO 5 Non-Coherency
+ 127 // Command FIFO 5 Pause
+ 128 // Command FIFO 5 End of Queue
+ 129 // Command FIFO 5 Fill
+ 130>; // Command FIFO 5 Drain
+ };
+
+ dspi at fff90000 { // Deserial Serial Peripheral Interface (DSPI_A)
+ compatible = "fsl,mpc5554-dspi";
+ reg = <0xfff90000 0x4000>;
+ interrupts = <275 // Combined: Transmit FIFO Underflow, Receive FIFO Overflow
+ 276 // Transmit FIFO End of Queue
+ 277 // Transmit FIFO Fill Flag
+ 278 // Transfer Complete
+ 279>; // Receive FIFO Drain
+ };
+
+ dspi at fff94000 { // Deserial Serial Peripheral Interface (DSPI_B)
+ compatible = "fsl,mpc5554-dspi";
+ reg = <0xfff94000 0x4000>;
+ interrupts = <131 // Combined: Transmit FIFO Underflow, Receive FIFO Overflow
+ 132 // Transmit FIFO End of Queue
+ 133 // Transmit FIFO Fill Flag
+ 134 // Transfer Complete
+ 135>; // Receive FIFO Drain
+ };
+
+ dspi at fff98000 { // Deserial Serial Peripheral Interface (DSPI_C)
+ compatible = "fsl,mpc5554-dspi";
+ reg = <0xfff98000 0x4000>;
+ interrupts = <136 // Combined: Transmit FIFO Underflow, Receive FIFO Overflow
+ 137 // Transmit FIFO End of Queue
+ 138 // Transmit FIFO Fill Flag
+ 139 // Transfer Complete
+ 140>; // Receive FIFO Drain
+ };
+
+ dspi at fff9c000 { // Deserial Serial Peripheral Interface (DSPI_D)
+ compatible = "fsl,mpc5554-dspi";
+ reg = <0xfff9c000 0x4000>;
+ interrupts = <141 // Combined: Transmit FIFO Underflow, Receive FIFO Overflow
+ 142 // Transmit FIFO End of Queue
+ 143 // Transmit FIFO Fill Flag
+ 144 // Transfer Complete
+ 145>; // Receive FIFO Drain
+ };
+
+ esci at fffb0000 { // Serial Communications Interface (SCI_A)
+ compatible = "fsl,mpc5554-esci";
+ reg = <0xfffb0000 0x4000>;
+ interrupts = <146>; // Combined request for all SCI_A interrupts
+ };
+
+ esci at fffb4000 { // Serial Communications Interface (SCI_B)
+ compatible = "fsl,mpc5554-esci";
+ reg = <0xfffb4000 0x4000>;
+ interrupts = <149>; // Combined request for all SCI_A interrupts
+ };
+
+ can at fffc0000 { // Controller Area Network (FlexCAN_A)
+ compatible = "fsl,mpc5554-flexcan";
+ reg = <0xfffc0000 0x4000>;
+ interrupts = <152 // Bus off
+ 153 // Error
+ 155 156 157 158 159 160 161 162 // Buffers 0-7
+ 163 164 165 166 167 168 169 170 // Buffers 8-15
+ 171 // Buffers 16-31
+ 172>; // Buffers 32-63
+ };
+
+ can at fffc4000 { // Controller Area Network (FlexCAN_B)
+ compatible = "fsl,mpc5554-flexcan";
+ reg = <0xfffc4000 0x4000>;
+ interrupts = <280 // Bus off
+ 281 // Error
+ 283 284 285 186 287 288 289 290 // Buffers 0-7
+ 291 292 293 294 295 296 297 298 // Buffers 8-15
+ 299 // Buffers 16-31
+ 300>; // Buffers 32-63
+ };
+
+ can at fffc8000 { // Controller Area Network (FlexCAN_C)
+ compatible = "fsl,mpc5554-flexcan";
+ reg = <0xfffc8000 0x4000>;
+ interrupts = <173 // Bus off
+ 174 // Error
+ 176 177 178 179 180 181 182 183 // Buffers 0-7
+ 184 185 186 187 188 189 190 191 // Buffers 8-15
+ 192 // Buffers 16-31
+ 193>; // Buffers 32-63
+ };
+
+ bam at ffffc000 { // Boot Assist Module (BAM)
+ compatible = "fsl,mpc5554-bam";
+ reg = <0xffffc000 0x4000>;
+ };
+
+ };
+
+ };
+
+};
More information about the Linuxppc-dev
mailing list