Yes I have done it.
Here is my dts
#include <dt-bindings/pinctrl/pinctrl-tegra.h>
/ {
pinmux@2430000 {
pinctrl-0 = <&pinmux_default>;
pinmux_default: common {
dap1_sclk_pj0 {
nvidia,pins = "dap1_sclk_pj0";
nvidia,function = "i2s1";
nvidia,pull = <TEGRA_PIN_PULL_NONE>;
nvidia,tristate = <TEGRA_PIN_DISABLE>;
nvidia,enable-input = <TEGRA_PIN_ENABLE>;
nvidia,lpdr = <TEGRA_PIN_DISABLE>;
};
dap1_dout_pj1 {
nvidia,pins = "dap1_dout_pj1";
nvidia,function = "i2s1";
nvidia,pull = <TEGRA_PIN_PULL_NONE>;
nvidia,tristate = <TEGRA_PIN_DISABLE>;
nvidia,enable-input = <TEGRA_PIN_DISABLE>;
nvidia,lpdr = <TEGRA_PIN_DISABLE>;
};
dap1_din_pj2 {
nvidia,pins = "dap1_din_pj2";
nvidia,function = "i2s1";
nvidia,pull = <TEGRA_PIN_PULL_NONE>;
nvidia,tristate = <TEGRA_PIN_ENABLE>;
nvidia,enable-input = <TEGRA_PIN_ENABLE>;
nvidia,lpdr = <TEGRA_PIN_DISABLE>;
};
dap1_fs_pj3 {
nvidia,pins = "dap1_fs_pj3";
nvidia,function = "i2s1";
nvidia,pull = <TEGRA_PIN_PULL_NONE>;
nvidia,tristate = <TEGRA_PIN_DISABLE>;
nvidia,enable-input = <TEGRA_PIN_ENABLE>;
nvidia,lpdr = <TEGRA_PIN_DISABLE>;
};
aud_mclk_pj4 {
nvidia,pins = "aud_mclk_pj4";
nvidia,function = "aud";
nvidia,pull = <TEGRA_PIN_PULL_DOWN>;
nvidia,tristate = <TEGRA_PIN_DISABLE>;
nvidia,enable-input = <TEGRA_PIN_DISABLE>;
nvidia,lpdr = <TEGRA_PIN_DISABLE>;
};
sudo dtc -I fs -O dts -o extracted_proc.dts /proc/device-tree
dap1_din_pj2 {
nvidia,enable-input = <0x1>;
nvidia,pins = "dap1_din_pj2";
nvidia,lpdr = <0x0>;
nvidia,tristate = <0x1>;
nvidia,function = "i2s1";
nvidia,pull = <0x0>;
};
aud_mclk_pj4 {
nvidia,enable-input = <0x0>;
nvidia,pins = "aud_mclk_pj4";
nvidia,lpdr = <0x0>;
nvidia,tristate = <0x0>;
nvidia,function = "aud";
nvidia,pull = <0x1>;
};
dap1_fs_pj3 {
nvidia,enable-input = <0x1>;
nvidia,pins = "dap1_fs_pj3";
nvidia,lpdr = <0x0>;
nvidia,tristate = <0x0>;
nvidia,function = "i2s1";
nvidia,pull = <0x0>;
};
dap1_dout_pj1 {
nvidia,enable-input = <0x0>;
nvidia,pins = "dap1_dout_pj1";
nvidia,lpdr = <0x0>;
nvidia,tristate = <0x0>;
nvidia,function = "i2s1";
nvidia,pull = <0x0>;
};
dap1_sclk_pj0 {
nvidia,enable-input = <0x1>;
nvidia,pins = "dap1_sclk_pj0";
nvidia,lpdr = <0x0>;
nvidia,tristate = <0x0>;
nvidia,function = "i2s1";
nvidia,pull = <0x0>;
};
Then I sudo busybox devmem 0x02431020 32 0x00000408
and it works well. That means I have added.