Hi,
On Thu, Sep 28, 2017 at 09:25:41AM +0000, Icenowy Zheng wrote:
> + /*
> + * The max-frequency properties in all MMC controller nodes
> + * are conservative values proven to work on Banana Pi M2
> + * Ultra (the first community available R40 board).
> + * As the board doesn't wire MMC3 out, the property is not
> + * set in MMC3.
> + * TODO: measure the accurate max frequency of the controllers.
> + */
> + mmc0: mmc@1c0f000 {
> + compatible = "allwinner,sun8i-r40-mmc",
> + "allwinner,sun50i-a64-mmc";
> + reg = <0x01c0f000 0x1000>;
> + clocks = <&ccu CLK_BUS_MMC0>, <&ccu CLK_MMC0>;
> + clock-names = "ahb", "mmc";
> + resets = <&ccu RST_BUS_MMC0>;
> + reset-names = "ahb";
> + pinctrl-0 = <&mmc0_pins>;
> + pinctrl-names = "default";
> + interrupts = <GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH>;
> + max-frequency = <25000000>;
> + status = "disabled";
> + #address-cells = <1>;
> + #size-cells = <0>;
> + };Sorry if it wasn't really clear, but my point was more than you should just drop the max-frequency property Maxime -- Maxime Ripard, Free Electrons Embedded Linux and Kernel engineering http://free-electrons.com
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