|
@@ -8,6 +8,16 @@ Required SoC Specific Properties:
|
|
|
- dmas: list of DMA controller phandle and DMA request line ordered pairs.
|
|
|
- dma-names: identifier string for each DMA request line in the dmas property.
|
|
|
These strings correspond 1:1 with the ordered pairs in dmas.
|
|
|
+- clocks: Handle to iis clock and RCLK source clk.
|
|
|
+- clock-names:
|
|
|
+ i2s0 uses some base clks from CMU and some are from audio subsystem internal
|
|
|
+ clock controller. The clock names for i2s0 should be "iis", "i2s_opclk0" and
|
|
|
+ "i2s_opclk1" as shown in the example below.
|
|
|
+ i2s1 and i2s2 uses clocks from CMU. The clock names for i2s1 and i2s2 should
|
|
|
+ be "iis" and "i2s_opclk0".
|
|
|
+ "iis" is the i2s bus clock and i2s_opclk0, i2s_opclk1 are sources of the root
|
|
|
+ clk. i2s0 has internal mux to select the source of root clk and i2s1 and i2s2
|
|
|
+ doesn't have any such mux.
|
|
|
|
|
|
Optional SoC Specific Properties:
|
|
|
|
|
@@ -20,44 +30,26 @@ Optional SoC Specific Properties:
|
|
|
then this flag is enabled.
|
|
|
- samsung,idma-addr: Internal DMA register base address of the audio
|
|
|
sub system(used in secondary sound source).
|
|
|
-
|
|
|
-Required Board Specific Properties:
|
|
|
-
|
|
|
-- gpios: The gpio specifier for data out,data in, LRCLK, CDCLK and SCLK
|
|
|
- interface lines. The format of the gpio specifier depends on the gpio
|
|
|
- controller.
|
|
|
- The syntax of samsung gpio specifier is
|
|
|
- <[phandle of the gpio controller node]
|
|
|
- [pin number within the gpio controller]
|
|
|
- [mux function]
|
|
|
- [flags and pull up/down]
|
|
|
- [drive strength]>
|
|
|
+- pinctrl-0: Should specify pin control groups used for this controller.
|
|
|
+- pinctrl-names: Should contain only one value - "default".
|
|
|
|
|
|
Example:
|
|
|
|
|
|
-- SoC Specific Portion:
|
|
|
-
|
|
|
-i2s@03830000 {
|
|
|
+i2s0: i2s@03830000 {
|
|
|
compatible = "samsung,i2s-v5";
|
|
|
reg = <0x03830000 0x100>;
|
|
|
dmas = <&pdma0 10
|
|
|
&pdma0 9
|
|
|
&pdma0 8>;
|
|
|
dma-names = "tx", "rx", "tx-sec";
|
|
|
+ clocks = <&clock_audss EXYNOS_I2S_BUS>,
|
|
|
+ <&clock_audss EXYNOS_I2S_BUS>,
|
|
|
+ <&clock_audss EXYNOS_SCLK_I2S>;
|
|
|
+ clock-names = "iis", "i2s_opclk0", "i2s_opclk1";
|
|
|
samsung,supports-6ch;
|
|
|
samsung,supports-rstclr;
|
|
|
samsung,supports-secdai;
|
|
|
samsung,idma-addr = <0x03000000>;
|
|
|
-};
|
|
|
-
|
|
|
-- Board Specific Portion:
|
|
|
-
|
|
|
-i2s@03830000 {
|
|
|
- gpios = <&gpz 0 2 0 0>, /* I2S_0_SCLK */
|
|
|
- <&gpz 1 2 0 0>, /* I2S_0_CDCLK */
|
|
|
- <&gpz 2 2 0 0>, /* I2S_0_LRCK */
|
|
|
- <&gpz 3 2 0 0>, /* I2S_0_SDI */
|
|
|
- <&gpz 4 2 0 0>, /* I2S_0_SDO[1] */
|
|
|
- <&gpz 5 2 0 0>, /* I2S_0_SDO[2] */
|
|
|
- <&gpz 6 2 0 0>; /* I2S_0_SDO[3] */
|
|
|
+ pinctrl-names = "default";
|
|
|
+ pinctrl-0 = <&i2s0_bus>;
|
|
|
};
|