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Sugar Zhang 7ddb8b2d97 clk: rockchip: rk3568: Allow config i2s mclk as out/in

This patch exports I2Sx_IOE to allow user to config mclk
direction from DT.

e.g.

i2s2 mclk as output:

&ext_codec {
	clocks = <&cru I2S2_MCLKOUT>;
	clock-names = "mclk";
	assigned-clocks = <&cru I2S2_MCLK_IOE>, <&cru I2S2_MCLKOUT>;
	assigned-clock-rates = <0>, <12288000>;
	assigned-clock-parents = <&cru I2S2_MCLKOUT>;
};

clk summary:

gpll                           6        9        0  1188000000
  clk_i2s2_2ch_src             0        0        0   594000000
    clk_i2s2_2ch_frac          0        0        0    12288000
      clk_i2s2_2ch             0        0        0    12288000
        mclk_i2s2_2ch          0        0        0    12288000
          i2s2_mclkout         0        0        0    12288000
            i2s2_mclk_ioe      0        0        0    12288000

i2s2 mclk as input:

&ext_codec {
	clocks = <&i2s2_mclkin>;
	clock-names = "mclk";
	assigned-clocks = <&cru I2S2_MCLK_IOE>, <&cru CLK_I2S2_2CH>;
	assigned-clock-parents = <&i2s2_mclkin>, <&i2s2_mclkin>;
};

clk summary:

i2s2_mclkin                    0        0        0    12288000
  clk_i2s2_2ch                 0        0        0    12288000
    mclk_i2s2_2ch              0        0        0    12288000
  i2s2_mclk_ioe                0        0        0    12288000

Change-Id: I57d10ea02b65bf14d2c2f9ff403f06ec4c33c610
Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
Signed-off-by: Sugar Zhang <sugar.zhang@rock-chips.com>

2021-03-11 12:08:29 +08:00