ARM: davinci: da850: add DT node for I2C0
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>
diff --git a/arch/arm/boot/dts/da850-evm.dts b/arch/arm/boot/dts/da850-evm.dts
index fa04152..0060903 100644
--- a/arch/arm/boot/dts/da850-evm.dts
+++ b/arch/arm/boot/dts/da850-evm.dts
@@ -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";
diff --git a/arch/arm/boot/dts/da850.dtsi b/arch/arm/boot/dts/da850.dtsi
index 8dd15c0..9669e80 100644
--- a/arch/arm/boot/dts/da850.dtsi
+++ b/arch/arm/boot/dts/da850.dtsi
@@ -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";
diff --git a/arch/arm/mach-davinci/da8xx-dt.c b/arch/arm/mach-davinci/da8xx-dt.c
index 37c27af..a1731f0 100644
--- a/arch/arm/mach-davinci/da8xx-dt.c
+++ b/arch/arm/mach-davinci/da8xx-dt.c
@@ -37,11 +37,17 @@
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();
}