Datasheet

Table of Contents

• Introduction
• Generic Setup details
• Performance Numbers
  • SBL OSPI NOR performance (HS-FS)
  • SBL EMMC performance (HS-FS)
  • CPSW Performance
  • IPC performance
    • IPC NOTIFY
    • IPC RPMSG
  • EMMC Performance
  • OSPI NOR Flash Performance
  • GPIO latency

Introduction

This datasheet provides the performance numbers of various device drivers in MCU PLUS SDK for AM62PX

Generic Setup details

SOC Details	Values
Core	R5F
Core Operating Speed	800 MHz
Cache Status	Enabled

Optimization Details	Values
Build Profile	Release
R5F Compiler flags	-mcpu=cortex-r5 -mfloat-abi=hard -mfpu=vfpv3-d16 -Wall -Werror -g -mthumb -Wno-gnu-variable-sized-type-not-at-end -Wno-unused-function
R5F Linker flags	-Wl,–diag_suppress=10063 -Wl,–ram_model -Wl,–reread_libs
Code Placement	HSM RAM (For SBL Stage1), DDR (SBL Stage2 and others)
Data Placement	HSM RAM (For SBL Stage1), DDR (SBL Stage2 and others)

Performance Numbers

SBL OSPI NOR performance (HS-FS)

• Software/Application used : sbl_emmc_linux_multistage, ipc_rpmsg_echo_linux, linux and HSM App Images
• Cores booted by stage1 SBL : wkup-r5f0-0
• Cores booted by stage2 SBL : hsm-m4f0-0 mcu-r5f0-0 a530-0
• Size of images loaded by stage1 : 256 KB
• Size of images loaded by stage2 : 886 KB
• Boot Media Clock : 166.667 MHz
• Mode : PHY enabled, DMA enabled
• Protocol : 8D-8D-8D

SBL Stage1 boot time breakdown	Time (ms)
SBL Stage1: System_init	27.921
SBL Stage1: App_waitForMcuPbist	0.002
SBL Stage1: Board_init	0.000
SBL Stage1: Drivers_open	0.001
SBL Stage1: SBL Drivers_open	0.151
SBL Stage1: Board_driversOpen	0.009
SBL Stage1: SBL Board_driversOpen	1.342
SBL Stage1: App_loadSelfcoreImage	4.452
-------------------------------------—	-----------—
SBL Stage1: Total time taken	33.882

SBL Stage2 boot time breakdown	Time (ms)
SBL Stage2: System_init	1.992
SBL Stage2: Board_init	0.002
SBL Stage2: FreeRtosTask Create	0.260
SBL Stage2: SBL Drivers_open	1.177
SBL Stage2: SBL Board_driversOpen	0.222
SBL Stage2: App_loadImages	3.828
SBL Stage2: App_loadMCUImages	4.212
SBL Stage2: App_loadLinuxImages	13.788
-------------------------------------—	-----------—
SBL Stage2: Total time taken	25.484

• Here the CPU load or section copy takes place from the OSPI memory to DDR, this would be slower that mem to mem copy.
• The time taken for Sciclient Get Version can be avoided if the version check is disabled
• Out of the ~38 ms taken for System Init is mostly attributed to DDR initialization.

SBL EMMC performance (HS-FS)

• Software/Application used : sbl_emmc_linux_multistage, ipc_rpmsg_echo_linux, linux and HSM App Images
• Cores booted by stage1 SBL : wkup-r5f0-0
• Cores booted by stage2 SBL : hsm-m4f0-0 mcu-r5f0-0 a530-0
• Size of images loaded by stage1 : 231 KB
• Size of images loaded by stage2 : 914 KB
• Boot Media Clock : 200.00 MHz
• Mode : HS200

SBL Stage1 boot time breakdown	Time (ms)
SBL Stage1: System_init	27.640
SBL Stage1: Board_init	0.000
SBL Stage1: Drivers_open	0.000
SBL Stage1: SBL Drivers_open	20.413
SBL Stage1: Board_driversOpen	0.000
SBL Stage1: App_loadSelfcoreImage	8.989
-------------------------------------—	-----------—
SBL Stage1: Total time taken	57.044

SBL Stage2 boot time breakdown	Time (ms)
SBL Stage2: System_init	1.991
SBL Stage2: Board_init	0.000
SBL Stage2: FreeRtosTask Create	0.260
SBL Stage2: SBL Drivers_open	22.870
SBL Stage2: App_loadImages	5.514
SBL Stage2: App_loadMCUImages	6.089
SBL Stage2: App_loadLinuxImages	18.346
-------------------------------------—	-----------—
SBL Stage2: Total time taken	55.073

• The emmc driver initialization is done as part of Drivers_open.
• The time taken for Sciclient Get Version can be avoided if the version check is disabled
• Out of the ~38 ms taken for System Init is mostly attributed to DDR initialization.

CPSW Performance

For CPSW performance refer Ethernet Performance on AM62P

IPC performance

IPC NOTIFY

• 10000 messages are sent and average one way message latency is measured

Local Core	Remote Core	Average Message Latency (us)
wkup-r5f0-0	mcu-r5f0-0	1.24

IPC RPMSG

• 1000 messages are sent and average one way message latency is measured

Local Core	Remote Core	Message Size	Average Message Latency (us)	Max Latency (us)	Message Count
wkup-r5f0-0	mcu-r5f0-0	32	14.758	16	1000
wkup-r5f0-0	mcu-r5f0-0	64	21.329	22	1000
wkup-r5f0-0	mcu-r5f0-0	112	30.709	32	1000

EMMC Performance

Mode	Data size(MiB)	Write speed(MiBps)	Read speed(MiBps)
HS200	1	71.69	158.83
HS200	4	108.75	169.52
HS200	6	86.61	152.17
HS200	32	100.89	166.79
HS200	40	97.13	167.42
HS400	1	41.95	246.32
HS400	4	101.31	268.21
HS400	6	102.44	225.61
HS400	32	90.79	258.12
HS400	40	93.12	258.64

OSPI NOR Flash Performance

DQS Tuning Algorithm	Tuning Time (ms)
Default Tuning Window	3.47 ms
Fast Tuning Window	1.17 ms

• Flash frequency: 25Mhz
• Flash protocol: FLASH_CFG_PROTO_8D_8D_8D
• Phy Condition: disabled

Data Size(MiB)	DMA Enabled	Write Speed(mbps)	Read Speed(mbps)
1	No	0.46	2.87
5	No	0.47	2.87
10	No	0.47	2.87
1	Yes	0.46	48.72
5	Yes	0.47	48.76
10	Yes	0.47	48.76

• Flash frequency: 50Mhz
• Flash protocol: FLASH_CFG_PROTO_1S_1S_1S
• Phy Condition: disabled

Data Size(MiB)	DMA Enabled	Write Speed(mbps)	Read Speed(mbps)
1	No	0.43	5.87
5	No	0.44	5.87
10	No	0.44	5.87
1	Yes	0.43	6.23
5	Yes	0.44	6.23
10	Yes	0.44	6.23

• Flash frequency: 133Mhz
• Flash protocol: FLASH_CFG_PROTO_8D_8D_8D
• Phy Condition: enabled

Data Size(MiB)	DMA Enabled	Write Speed(mbps)	Read Speed(mbps)
1	No	0.46	6.39
5	No	0.46	6.39
10	No	0.46	6.38
1	Yes	0.46	233.79
5	Yes	0.47	234.65
10	Yes	0.46	234.76

• Flash frequency: 166Mhz
• Flash protocol: FLASH_CFG_PROTO_8D_8D_8D
• Phy Condition: enabled

Data Size(MiB)	DMA Enabled	Write Speed(mbps)	Read Speed(mbps)
1	No	0.46	7.04
5	No	0.47	7.04
10	No	0.46	7.04
1	Yes	0.46	283.55
5	Yes	0.47	284.78
10	Yes	0.47	284.92

GPIO latency

GPIO latency is measured by connecting 2 GPIOs externaly and configuring one GPIO as input and the other as output. Then 1 is written to GPIO output and measure the time between writing 1 to GPIO output to rececving the interrupt at GPIO input.

Core	GPIO In	GPIO Out	Latency (us)
mcu-r5f	MCU_GPIO0_15	MCU_GPIO0_16	2