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Linux: AM437x Pinmux Uart1

Tool/software: Linux

Respected Sir,
UART 1 Pinmux configuration. My concern is how to apply the UART 1 configuration on dts file. 
Like I saw for UART 0, the configuration was written in .dts file -
 uart0_pins_default: uart0_pins_default {
  pinctrl-single,pins = <
   0x168 (DS0_PULL_UP_DOWN_EN | INPUT_EN | MUX_MODE0)
   0x16C (DS0_PULL_UP_DOWN_EN | INPUT_EN | MUX_MODE0)
   0x170 (PIN_INPUT_PULLUP | SLEWCTRL_FAST | DS0_PULL_UP_DOWN_EN | MUX_MODE0) /* uart0_rxd.uart0_rxd */
   0x174 (PIN_INPUT | PULL_DISABLE | SLEWCTRL_FAST | DS0_PULL_UP_DOWN_EN | MUX_MODE0) /* uart0_txd.uart0_txd */
  >;
 };
Those address 0x168,0x16C and so on is written for uart 0 and also different address is written for uart 3. Similarly I am not able to find out for UART 1.
I request you to please guide us about the configuration so that I can use UART 1 channel.
I have one another issues what I am facing during building Buildroot.
I perform two commands -
$make myd_c437x_idk_defconfig and then
$make
 
During make commandI am getting error. I have attached error image with this mail. Please check the attached data.

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