drivers/spi/spi-rockchip.c
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/* sclk_out: spi master internal logic in rk3x can support 50Mhz */
#define MAX_SCLK_OUT 50000000U
Search found 2 matches
- 2024-05-27 6:59
- Forum: LuckFox Pico
- Topic: RV1103/1106的SPI最大时钟速度只有50MHz，如何修改才能提高？
- Replies: 2
- Views: 2884
Re: RV1103/1106的SPI最大时钟速度只有50MHz，如何修改才能提高？
查阅spi驱动源码得知，rk3x的SPI最大速率为50MHz，这可能是由于pclk被限制在100MHz导致的。
drivers/spi/spi-rockchip.c
drivers/spi/spi-rockchip.c
- 2024-05-27 1:03
- Forum: LuckFox Pico
- Topic: RV1103/1106的SPI最大时钟速度只有50MHz，如何修改才能提高？
- Replies: 2
- Views: 2884
RV1103/1106的SPI最大时钟速度只有50MHz，如何修改才能提高？
如题，目前测试只有sfc速度高一点，能达到71MHz，但是只用于nand。 spi0: spi@ff500000 { compatible = "rockchip,rv1106-spi", "rockchip,rk3066-spi"; reg = <0xff500000 0x1000>; interrupts = <GIC_SPI 23 IRQ_TYPE_LEVEL_HIGH>; #address-cells = <1>; #size-cells = <0>; clocks = <&cru CLK_SPI0>, <&cru PCLK_SP...