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arm64: dts: imx8-apalis: add clock configuration for 44.1 kHz hdmi audio

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Currently, HDMI audio cannot play sound at a 44.1 kHz sample rate due to
a clock frequency mismatch. This update resolves the issue by allowing
the sai driver to change the clock parent to AUDIO_PLL_1 when the sample
rate is 44.1 kHz. It also ensures that AUDIO_PLL_1 operates at the
correct frequency for this configuration.

Signed-off-by: Stefan Eichenberger <stefan.eichenberger@toradex.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
This commit is contained in:
Stefan Eichenberger 2025-01-20 10:45:22 +01:00 committed by Shawn Guo
parent 3a3eefecbf
commit 2e662a2c37
1 changed files with 16 additions and 0 deletions
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16
arch/arm64/boot/dts/freescale/imx8-apalis-v1.1.dtsi
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@ -790,6 +790,22 @@ &sai1 {
status = "okay";
};
/* Apalis HDMI Audio */
&sai5 {
assigned-clocks = <&acm IMX_ADMA_ACM_SAI5_MCLK_SEL>,
<&acm IMX_ADMA_ACM_AUD_CLK1_SEL>,
<&clk IMX_SC_R_AUDIO_PLL_0 IMX_SC_PM_CLK_PLL>,
<&clk IMX_SC_R_AUDIO_PLL_0 IMX_SC_PM_CLK_SLV_BUS>,
<&clk IMX_SC_R_AUDIO_PLL_0 IMX_SC_PM_CLK_MST_BUS>,
<&clk IMX_SC_R_AUDIO_PLL_1 IMX_SC_PM_CLK_PLL>,
<&clk IMX_SC_R_AUDIO_PLL_1 IMX_SC_PM_CLK_SLV_BUS>,
<&clk IMX_SC_R_AUDIO_PLL_1 IMX_SC_PM_CLK_MST_BUS>,
<&sai5_lpcg 0>;
assigned-clock-parents = <&aud_pll_div0_lpcg 0>, <&aud_rec1_lpcg 0>;
assigned-clock-rates = <0>, <0>, <786432000>, <49152000>, <12288000>,
<722534400>, <45158400>, <11289600>, <49152000>;
};
/* TODO: Apalis SATA1 */
/* Apalis SPDIF1 */