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ARM: davinci: da850: add DT node for I2C0

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Add I2C0 device tree and pin muxing information to da850-evm.
Also, add OF_DEV_AUXDATA for I2C0 controller driver in da850
board dt file to use I2C0 clock.
Verified i2c0 node gets created in sys class interface as
"/sys/class/i2c-dev/i2c-0/subsystem/i2c-0".

nsekhar@ti.com: tested using i2cdetect and i2cdump.

Signed-off-by: Vishwanathrao Badarkhe, Manish <manishv.b@ti.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
This commit is contained in:
Vishwanathrao Badarkhe, Manish 2013-02-06 15:06:22 +05:30 committed by Sekhar Nori
parent 1661636d36
commit 01729ccf19
3 changed files with 27 additions and 1 deletions
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6
arch/arm/boot/dts/da850-evm.dts
View File

@ -30,6 +30,12 @@
rtc0: rtc@1c23000 {
status = "okay";
};
i2c0: i2c@1c22000 {
status = "okay";
clock-frequency = <100000>;
pinctrl-names = "default";
pinctrl-0 = <&i2c0_pins>;
};
};
nand_cs3@62000000 {
status = "okay";

14
arch/arm/boot/dts/da850.dtsi
View File

@ -56,6 +56,12 @@
0x30 0x01100000 0x0ff00000
>;
};
i2c0_pins: pinmux_i2c0_pins {
pinctrl-single,bits = <
/* I2C0_SDA,I2C0_SCL */
0x10 0x00002200 0x0000ff00
>;
};
};
serial0: serial@1c42000 {
compatible = "ns16550a";
@ -88,6 +94,14 @@
19>;
status = "disabled";
};
i2c0: i2c@1c22000 {
compatible = "ti,davinci-i2c";
reg = <0x22000 0x1000>;
interrupts = <15>;
#address-cells = <1>;
#size-cells = <0>;
status = "disabled";
};
};
nand_cs3@62000000 {
compatible = "ti,davinci-nand";

8
arch/arm/mach-davinci/da8xx-dt.c
View File

@ -37,11 +37,17 @@ static void __init da8xx_init_irq(void)
of_irq_init(da8xx_irq_match);
}
struct of_dev_auxdata da850_auxdata_lookup[] __initdata = {
OF_DEV_AUXDATA("ti,davinci-i2c", 0x01c22000, "i2c_davinci.1", NULL),
{}
};
#ifdef CONFIG_ARCH_DAVINCI_DA850
static void __init da850_init_machine(void)
{
of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
of_platform_populate(NULL, of_default_bus_match_table,
da850_auxdata_lookup, NULL);
da8xx_uart_clk_enable();
}