Hi Ti,
We are using Linux SDK, and we want to lower eMMC speed for some test.
However, when I modified the dts as below, the eMMC speed still not changed.
Please let us know how to do this in uboot and Linux.
sdhci0: sdhci@4f80000 {
compatible = "ti,am654-sdhci-5.1";
reg = <0x0 0x4f80000 0x0 0x260>, <0x0 0x4f90000 0x0 0x134>;
power-domains = <&k3_pds 47 TI_SCI_PD_EXCLUSIVE>;
clocks = <&k3_clks 47 0>, <&k3_clks 47 1>;
clock-names = "clk_ahb", "clk_xin";
interrupts = <GIC_SPI 136 IRQ_TYPE_LEVEL_HIGH>;
//mmc-ddr-1_8v;
//mmc-hs200-1_8v;
ti,otap-del-sel-legacy = <0x0>;
ti,otap-del-sel-mmc-hs = <0x0>;
ti,otap-del-sel-sd-hs = <0x0>;
ti,otap-del-sel-sdr12 = <0x0>;
ti,otap-del-sel-sdr25 = <0x0>;
ti,otap-del-sel-sdr50 = <0x8>;
/*
ti,otap-del-sel-sdr104 = <0x5>;
ti,otap-del-sel-ddr50 = <0x5>;
ti,otap-del-sel-ddr52 = <0x5>;
ti,otap-del-sel-hs200 = <0x5>;
ti,otap-del-sel-hs400 = <0x0>;*/
ti,trm-icp = <0x8>;
no-1-8-v;
dma-coherent;
};
Thanks.
Eric