RK3368 es8316和hdmiin共用IIS

最新推荐文章于 2025-07-22 08:00:00 发布

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最新推荐文章于 2025-07-22 08:00:00 发布 · 1.7k 阅读

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CC 4.0 BY-SA版权

1.es8316与hdmiin共用iis的时候，播放声音会杂音，因此当8316使用的时候，需要disable hdmiin功能，可以通过pwdn脚禁止hdmiin芯片

2.当hdmiin使用的时候，需要关闭iis，这个时候就需要禁止主控的mclk和iis功能

以下是3368 8.1的补丁，仅供参考：

close i2s & mclk when hdmiin open

Change-Id: I6321157b65cd9d524877f0db78e621ca7c2bd308

diff --git a/arch/arm64/boot/dts/rockchip/rk3368.dtsi b/arch/arm64/boot/dts/rockchip/rk3368.dtsi
index 5affdd5..8bf488f 100755
--- a/arch/arm64/boot/dts/rockchip/rk3368.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3368.dtsi
@@ -1294,8 +1294,9 @@
        dma-names = "tx", "rx";
        clock-names = "i2s_clk", "i2s_hclk";
        clocks = <&cru SCLK_I2S_8CH>, <&cru HCLK_I2S_8CH>;
-       pinctrl-names = "default";
+       pinctrl-names = "default","sleep";
        pinctrl-0 = <&i2s_8ch_bus>;
+       pinctrl-1 = <&i2s_8ch_gpio>;
        status = "disabled";
    };

@@ -2008,7 +2009,17 @@
                        <2 18 RK_FUNC_1 &pcfg_pull_none>,
                        <2 19 RK_FUNC_1 &pcfg_pull_none>;
            };
-
+
+           i2s_8ch_gpio: i2s-8ch-gpio {
+               rockchip,pins =<2 12 RK_FUNC_GPIO &pcfg_pull_none>,
+                       <2 13 RK_FUNC_GPIO &pcfg_pull_none>,
+                       <2 14 RK_FUNC_GPIO &pcfg_pull_none>,
+                       <2 15 RK_FUNC_GPIO &pcfg_pull_none>,
+                       <2 16 RK_FUNC_GPIO &pcfg_pull_none>,
+                       <2 17 RK_FUNC_GPIO &pcfg_pull_none>,