RV1103/1106的SPI最大时钟速度只有50MHz，如何修改才能提高？
Posted: 2024-05-27 1:03
如题，目前测试只有sfc速度高一点，能达到71MHz，但是只用于nand。
Code: Select all
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_SPI0>, <&cru SCLK_IN_SPI0>;
clock-names = "spiclk", "apb_pclk", "sclk_in";
dmas = <&dmac 1>, <&dmac 0>;
dma-names = "tx", "rx";
pinctrl-names = "default";
pinctrl-0 = <&spi0m0_cs0 &spi0m0_cs1 &spi0m0_pins>;
status = "disabled";
};
Code: Select all
sfc: spi@ffac0000 {
compatible = "rockchip,sfc";
reg = <0xffac0000 0x4000>;
interrupts = <GIC_SPI 53 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&cru SCLK_SFC>, <&cru HCLK_SFC>;
clock-names = "clk_sfc", "hclk_sfc";
assigned-clocks = <&cru SCLK_SFC>;
assigned-clock-rates = <75000000>;
#address-cells = <1>;
#size-cells = <0>;
status = "disabled";
};