I've specified an I2C bus and all 6 UARTs in the dts file for my custom cpu
board, as follows:-
ocp {
uart1: serial@44e09000 {
pinctrl-names = "default";
status = "okay";
};
uart2: serial@48022000 {
pinctrl-names = "default";
status = "okay";
};
uart3: serial@48024000 {
pinctrl-names = "default";
status = "okay";
};
uart4: serial@481a6000 {
pinctrl-names = "default";
status = "okay";
};
uart5: serial@481a8000 {
pinctrl-names = "default";
status = "okay";
};
uart6: serial@481aa000 {
pinctrl-names = "default";
status = "okay";
};
i2c1: i2c@44e0b000 {
status = "okay";
pinctrl-names = "default";
clock-frequency = <400000>;
gpio@20 {
compatible = "mcp,mcp23017";
reg = <0x20>;
};
tps: tps@24 {
reg = <0x24>;
};
eeprom@53 {
compatible = "mcp,24c02";
reg = <0x53>;
pagesize = <8>;
};
rtc@68 {
compatible = "dallas,ds1307";
reg = <0x68>;
};
};
};
But I get the following errors in the kernel boot log:-
[ 0.409275] omap_i2c 44e0b000.i2c: did not get pins for i2c error: -19
[ 0.411498] omap_i2c 44e0b000.i2c: bus 0 rev0.11 at 400 kHz
[ 0.413235] mcp230xx: probe of 0-0020 failed with error -22
...
[ 0.716912] pinctrl-single 44e10800.pinmux: 142 pins at pa f9e10800 size 568
[ 0.721790] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
[ 0.729174] omap_uart 44e09000.serial: did not get pins for uart0 error: -19
[ 0.729833] 44e09000.serial: ttyO0 at MMIO 0x44e09000 (irq = 88) is a OMAP
UART0
[ 1.320105] console [ttyO0] enabled
[ 1.326050] omap_uart 48022000.serial: did not get pins for uart1 error: -19
[ 1.334384] 48022000.serial: ttyO1 at MMIO 0x48022000 (irq = 89) is a OMAP
UART1
[ 1.344362] omap_uart 48024000.serial: did not get pins for uart2 error: -19
[ 1.352281] 48024000.serial: ttyO2 at MMIO 0x48024000 (irq = 90) is a OMAP
UART2
[ 1.361721] omap_uart 481a6000.serial: did not get pins for uart3 error: -19
[ 1.369759] 481a6000.serial: ttyO3 at MMIO 0x481a6000 (irq = 60) is a OMAP
UART3
[ 1.379144] omap_uart 481a8000.serial: did not get pins for uart4 error: -19
[ 1.387008] 481a8000.serial: ttyO4 at MMIO 0x481a8000 (irq = 61) is a OMAP
UART4
[ 1.396302] omap_uart 481aa000.serial: did not get pins for uart5 error: -19
[ 1.404164] 481aa000.serial: ttyO5 at MMIO 0x481aa000 (irq = 62) is a OMAP
UART5
However, the I2C bus appears to be working okay, as later I get:-
[ 1.906072] rtc-ds1307 0-0068: rtc core: registered ds1307 as rtc0
[ 1.912767] rtc-ds1307 0-0068: 56 bytes nvram
...
[ 2.118207] rtc-ds1307 0-0068: setting system clock to 2013-01-22 20:28:37
UTC (1358886517)
I did try specifying the exact pins required in the am33xx_pinmux dts entry,
but I got an error
stating the pins were already allocated to their relevant devices.
Any ideas ?
Cheers
Mark J.
--
To unsubscribe from this list: send the line "unsubscribe linux-omap" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
