All,
Trying create a dt using new sunxi-ng for SPI0:
sun8i-h3.dtsi:
....
uart3: serial@01c28c00 {
compatible = "snps,dw-apb-uart";
reg = <0x01c28c00 0x400>;
interrupts = <GIC_SPI 3 IRQ_TYPE_LEVEL_HIGH>;
reg-shift = <2>;
reg-io-width = <4>;
clocks = <&ccu CLK_BUS_UART3>;
resets = <&ccu RST_BUS_UART3>;
dmas = <&dma 9>, <&dma 9>;
dma-names = "rx", "tx";
status = "disabled";
};
spi0: spi@01c68000 {
compatible = "allwinner,sun6i-a31-spi";
reg = <0x01c68000 0x1000>;
interrupts = <GIC_SPI 65 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&ccu CLK_BUS_SPI0>, <&ccu CLK_SPI0>;
resets = <&ccu RST_BUS_SPI0>;
dmas = <&dma 23>, <&dma 23>;
dma-names = "rx", "tx";
status = "disabled";
#address-cells = <1>;
#size-cells = <0>;
};
sun8i-orangepi-pc.dts:
.....
usb0_id_detect_pin: usb0_id_detect_pin@0 {
allwinner,pins = "PG12";
allwinner,function = "gpio_in";
allwinner,drive = <SUN4I_PINCTRL_10_MA>;
allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
};
spi0_pins_a: spi0@0 {
allwinner,pins = "PC0", "PC1", "PC2";
allwinner,function = "spi0";
allwinner,drive = <SUN4I_PINCTRL_10_MA>;
allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
};
spi0_cs0_pins_a: spi0_cs0@0 {
allwinner,pins = "PC3";
allwinner,function = "spi0";
allwinner,drive = <SUN4I_PINCTRL_10_MA>;
allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
};
..
&spi0 {
pinctrl-names = "default";
pinctrl-0 = <&spi0_pins_a>, <&spi0_cs0_pins_a>;
status = "okay";
};
Linux kernel is reporting:
[ 0.766378] sun6i-spi 1c68000.spi: Unable to acquire AHB clock
[ 0.772273] sun6i-spi: probe of 1c68000.spi failed with error -2
What I'm doing wrong? (yes, it should be an overlay, but, trying to debug
first)
Tim
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