f1c100s或者v3s以spiflash为启动介质是什么模式,标准spi?可以DSPI?或者QSPI?
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2.2.10.6 SPI and SPI_DBI
Up to 2 SPI controllers (SPI0, SPI1)
The SPI0 only supports SPI mode; The SPI1 supports SPI mode and display bus interface (DBI) mode
SPI mode:
- Full-duplex synchronous serial interface
- Master/slave configurable
- Mode0 to Mode3 are supported for both transmit and receive operations
- 8-bit wide by 64-entry FIFO for both transmit and receive data
- Polarity and phase of the Chip Select (SPI-CS) and SPI Clock (SPI-CLK) are configurable
- Supports 3-wire/4-wire SPI
- Supports programmable serial data frame length: 1-bit to 32-bit
- Supports Standard SPI, Dual-Output/Dual-Input SPI, Dual IO SPI, Quad-Output/Quad-Input SPI
DBI mode:
- Supports DBI Type C 3 Line/4 Line Interface Mode
- Supports 2 Data Lane Interface Mode
- Supports RGB111/444/565/666/888 video format
- Maximum resolution of RGB666 240 x 320@30Hz with single data lane
- Maximum resolution of RGB888 240 x 320@60Hz or 320 x 480@30Hz with dual data lane
- Supports Tearing effect
- Supports software flexible control video frame rate
全志新的soc spi功能比以前强大了, 这是D1手册截下来的。
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启动的时候会自动选择DSPI模式吗?还是uboot里需要设置下??
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启动时单线的,uboot也是单线的,主线linux也是单线的,但是linux有patch可以打开双线读取模式
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不在uboot里开启双线的话,开 机速度还是上不去,linux打开应用或者文件操作的速度会快点
最近编辑记录 3050311118 (2021-08-14 08:54:00)
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